S-35190A
www.ablicinc.com 3-WIRE REAL-TIME CLOCK
© ABLIC Inc., 2004-2016 Rev.4.2_03
1
The S-35190A is a CMOS 3-wire real-time clock IC which operates with the very low current consumption in the wide range of
operation voltage. The operation voltage is 1.3 V to 5.5 V so that the S-35190A can be used for various power supplies from
main supply to backup battery. Due to the 0.25 A current consumption and wide range of power supply voltage at time
keeping, the S-35190A makes the battery life longer. In the system which operates with a backup battery, the included free
registers can be used as the function for user's backup memory. Users always can take back the information in the registers
which is stored before power-off the main power supply, after the voltage is restored.
The S-35190A has the function to correct advance / delay of the clock data speed, in the wide range, which is caused by the
crystal oscillation circuit's frequency deviation. Correcting according to the temperature change by combining this function and
a temperature sensor, it is possible to make a high precise clock function which is not affected by the ambient temperature.
Features
Low current consumption: 0.25 A typ. (VDD = 3.0 V, Ta = 25C)
Wide range of operating voltage: 1.3 V to 5.5 V
Built-in clock correction function
Built-in free user register
3-wire (MICROWIRE) CPU interface
Built-in alarm interrupter
Built-in flag generator during detection of low power voltage or at power-on
Auto calendar up to the year 2099, automatic leap year calculation function
Built-in constant-voltage circuit
Built-in 32.768 kHz crystal oscillator (built-in Cd, external Cg)
Lead-free, Sn 100%, halogen-free*1
*1. Refer to " Product Name Structure" for details.
Applications
Mobile game device
Mobile AV device
Digital still camera
Digital video camera
Electronic power meter
DVD recorder
TV, VCR
Mobile phone, PHS
Packages
8-Pin SOP (JEDEC)
8-Pin TSSOP
SNT-8A
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
2
Block Diagram
Hour
Minute
Year
Month
Day
Day of
the week
Second
INT
SIO
CS
VDD
INT controller 1
Divider,
Timing generator
Real-time data register
Status register 1
Oscillation
circuit
SCK
Low power supply
voltage detector
VSS
Comparator 1
Shift register Serial
interface
XIN
XOUT
Comparator
2
Clock correction register
INT controller 2
Constant-voltage
circuit
Status register 2
INT register 1
INT register 2
Power-on
detection circuit
Free register
Figure 1
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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Product Name Structure
1. Product name
1. 1 8-Pin SOP (JEDEC), 8-Pin TSSOP
S-35190A - xxxx x
Product name
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
Package name (abbreviation) and IC packing specification*1
J8T1: 8-Pin SOP (JEDEC), Tape
T8T1: 8-Pin TSSOP, Tape
*1. Refer to the tape drawing.
1. 2 SNT-8A
S-35190A - I8T1 U
Product name
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification*1
I8T1: SNT-8A, Tape
*1. Refer to the tape drawing.
2. Packages
Table 1 Package Drawing Codes
Package Name Dimension Tape Reel Land
8-Pin SOP (JEDEC) Environmental code = G FJ008-A-P-SD FJ008-D-C-SD FJ008-D-R-SD
Environmental code = U FJ008-A-P-SD FJ008-D-C-SD FJ008-D-R-S1
8-Pin TSSOP Environmental code = G FT008-A-P-SD FT008-E-C-SD FT008-E-R-SD
Environmental code = U FT008-A-P-SD FT008-E-C-SD FT008-E-R-S1
SNT-8A PH008-A-P-SD PH008-A-C-SD PH008-A-R-SD PH008-A-L-SD
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
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Pin Configurations
1. 8-Pin SOP (JEDEC)
7
6
5
8
2
3
4
1
Top view
Figure 2 S-35190A-J8T1x
2. 8-Pin TSSOP
7
6
5
8
2
3
4
1
Top view
Figure 3 S-35190A-T8T1x
3. SNT-8A
7
6
5
8
2
3
4
1
Top view
Figure 4 S-35190A-I8T1U
Table 2 List of Pins
Pin No Symbol Description I/O Configuration
1 INT
Output pin for
interrupt signal Output Nch open-drain output
(no protective diode at VDD)
2 XOUT
Connection
pins for crystal
oscillator
3 XIN
4 VSS GND pin
5 CS Input pin for
chip select Input
CMOS input
(built-in pull-down resistor.
no protective diode at VDD)
6 SCK
Input pin for
serial clock Input CMOS input
(no protective diode at VDD)
7 SIO I/O pin for
serial data Bi-directional
Nch open-drain output
(no protective diode at VDD)
CMOS input
8 VDD Pin for positive
power supply
Remark 1. x: G or U
2. Please select products of environmental code = U for Sn 100%, halogen-free products.
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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Pin Functions
1. CS (input for chip select) pin
This pin is to input chip select, has a pull-down resistor. Communication is available when this pin is in "H". If not using
communication, set this pin "L" or open.
2. SCK (input for serial clock) pin
This pin is to input a clock pulse for serial interface. When the CS pin is in "H", the SIO pin inputs / outputs data by
synchronizing with the clock pulse. When the CS pin is in "L" or open, the SCK pin does not accept inputting a clock
pulse.
3. SIO (I/O for serial data) pin
This is a data input / output pin of serial interface. When the CS pin is in "H", the SIO pin inputs / outputs data by
synchronizing with a clock pulse from the SCK pin. The status is in "High-Z" when the CS pin is in "L" or open, so that
the S-35190A does not transmit data. Setting the CS pin to "H" level from "L" or open, this SIO pin goes in the input
status so that it receives the command data. This pin has CMOS input and Nch open drain output.
4. XIN, XOUT (crystal oscillator connect) pins
Connect a crystal oscillator between XIN and XOUT.
5. INT (output for interrupt signal) pin
This pin outputs a signal of interrupt, or a clock pulse. By using the status register 2, users can select either of; alarm 1
interrupt, alarm 2 interrupt, output of user-set frequency, minute-periodical interrupt 1, minute-periodical interrupt 2, or
32.768 kHz output. This pin has Nch open drain output.
6. VDD (positive power supply) pin
Connect this VDD pin with a positive power supply. Regarding the values of voltage to be applied, refer to
" Recommended Operation Conditions".
7. VSS pin
Connect the VSS pin to GND.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
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Equivalent Circuits of Pins
SCK
Figure 5 SCK pin
SIO
Figure 6 SIO pin
CS
Figure 7 CS pin
INT
Figure 8 INT pin
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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Absolute Maximum Ratings
Table 3
Item Symbol Applied Pin Absolute Maximum Rating Unit
Power supply voltage VDD V
SS 0.3 to VSS 6.5 V
Input voltage VIN CS, SCK , SIO VSS 0.3 to VSS 6.5 V
Output voltage VOUT SIO, INT VSS 0.3 to VSS 6.5 V
Operating ambient
temperature*1 Topr 40 to 85 C
Storage temperature Tst
g
55 to 125 C
*1. Conditions with no condensation or frost. Condensation or frost causes short-circuiting between pins, resulting in a
malfunction.
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Recommended Operation Conditions
Table 4
(VSS = 0 V)
Item Symbol Condition Min. Typ. Max. Unit
Power supply voltage*1 VDD Ta = 40C to 85C 1.3 3.0 5.5 V
Time keeping power
supply voltage*2 VDDT Ta = 40C to 85C VDET 0.15 5.5 V
Crystal oscillator CL value CL 6 7 pF
*1. The power supply voltage that allows communication under the conditions shown in Table 9 of " AC Electrical
Characteristics".
*2. The power supply voltage that allows time keeping. For the relationship with VDET (low power supply voltage detection
voltage), refer to " Characteristics (Typical Data)".
Oscillation Characteristics
Table 5
(Ta =
25
C, V
DD
= 3.0 V, V
SS
= 0 V, VT-200 crystal oscillator (C
L
= 6 pF, 32.768 kHz) manufactured by Seiko Instruments Inc.)
Item Symbol Condition Min. Typ. Max. Unit
Oscillation start voltage VSTA Within 10 seconds 1.1 5.5 V
Oscillation start time tSTA 1 s
IC-to-IC frequency
deviation*1 IC 10 10 ppm
Frequency voltage
deviation V VDD = 1.3 V to 5.5 V 3 3 ppm/V
External capacitance C
g
Applied to XIN pin 9.1 pF
Internal oscillation
capacitance Cd Applied to XOUT pin 8 pF
*1. Reference value
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
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DC Electrical Characteristics
Table 6 DC Characteristics (VDD = 3.0 V)
(Ta =
40
C to
85
C, V
SS
= 0 V, VT-200 crystal oscillator (C
L
= 6 pF, 32.768 kHz, C
g
= 9.1 pF) manufactured by Seiko Instruments Inc.)
Item Symbol Applied Pin Condition Min. Typ. Max. Unit
Current
consumption 1 IDD1 Out of communication 0.25 0.93 A
Current
consumption 2 IDD2 During communication
(SCK = 100 kHz) 3.3 8
A
Input current
leakage 1 IIZH SCK , SIO VIN = VDD 0.5 0.5 A
Input current
leakage 2 IIZL SCK , SIO VIN = VSS 0.5 0.5 A
Input current 1 IIH1 CS VIN = VDD 2 6 16 A
Input current 2 IIH2 CS VIN = 0.4 V 40 100 300 A
Input current 3 IIH3 CS VIN = 1.0 V 215 A
Output current
leakage 1 IOZH SIO, INT VOUT = VDD 0.5 0.5 A
Output current
leakage 2 IOZL SIO, INT VOUT = VSS 0.5 0.5 A
Input voltage 1 VIH CS, SCK , SIO 0.8 VDD V
SS 5.5 V
Input voltage 2 VIL CS, SCK , SIO V
SS 0.3 0.2 VDD V
Output current 1 IOL1 INT VOUT = 0.4 V 3 5 mA
Output current 2 IOL2 SIO VOUT = 0.4 V 5 10 mA
Power supply
voltage detection
voltage
VDET 0.65 1 1.35 V
Table 7 DC Characteristics (VDD = 5.0 V)
(Ta =
40
C to
85
C, V
SS
= 0 V, VT-200 crystal oscillator (C
L
= 6 pF, 32.768 kHz, C
g
= 9.1 pF) manufactured by Seiko Instruments Inc.)
Item Symbol Applied Pin Condition Min. Typ. Max. Unit
Current
consumption 1 IDD1 Out of communication 0.3 1.1
A
Current
consumption 2 IDD2 During communication
(SCK = 100 kHz) 6 14
A
Input current
leakage 1 IIZH SCK , SIO VIN = VDD 0.5 0.5
A
Input current
leakage 2 IIZL SCK , SIO VIN = VSS 0.5 0.5
A
Input current 1 IIH1 CS VIN = VDD 8 16 50
A
Input current 2 IIH2 CS VIN = 0.4 V 40 150 350
A
Input current 3 IIH3 CS VIN = 2.0 V 610 A
Output current
leakage 1 IOZH SIO, INT VOUT = VDD 0.5 0.5
A
Output current
leakage 2 IOZL SIO, INT VOUT = VSS 0.5 0.5
A
Input voltage 1 VIH CS, SCK , SIO 0.8 VDD V
SS 5.5 V
Input voltage 2 VIL CS, SCK , SIO VSS 0.3 0.2 VDD V
Output current 1 IOL1 INT VOUT = 0.4 V 5 8 mA
Output current 2 IOL2 SIO VOUT = 0.4 V 6 13 mA
Power supply
voltage detection
voltage
VDET 0.65 1 1.35
V
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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AC Electrical Characteristics
Table 8 Measurement Conditions
SIO
C = 80 pF
V
DD
R = 10 k
Input pulse voltage VIH = 0.8 VDD, VIL = 0.2 VDD
Input pulse rise / fall time 20 ns
Output determination voltage VOH = 0.8 VDD, VOL = 0.2 VDD
Output load 80 pF pull-up resistor 10 k
Remark The power supplies of the IC
and load have the same
electrical potential.
Figure 9 Output Load Circuit
Table 9 AC Electrical Characteristics
(Ta = 40C to 85C)
Item Symbol VDD*2 1.3 V VDD*2 3.0 V Unit
Min. Typ. Max. Min. Typ. Max.
Clock pulse width tSCK 5 250000 1 250000 s
Setup time before CS rise tDS 1
0.2 s
Hold time after CS rise tCSH 1 0.2 s
Input data setup time tISU 1 0.2 s
Input data hold time tIHO 1 0.2 s
Output data definition time*1 tACC 3.5 1 s
Setup time before CS fall tCSS 1 0.2 s
Hold time after CS fall tDH 1 0.2 s
Input rise / fall time tR, tF 0.1 0.05 s
*1. Since the output format of the SIO pin is Nch open-drain output, output data definition time is determined by the values
of the load resistance (RL) and load capacity (CL) outside the IC. Therefore, use this value only as a reference value.
*2. Regarding the power supply voltage, refer to " Recommended Operation Conditions".
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
10
SIO
t
DS
t
CSH
t
DS
SCK
t
DH
t
CSS
t
DH
CS
Figure 10 Timing Diagram 1 during 3-wire Communication
Input data
80%
20%
t
F
t
R
t
ISU
t
IHO
20%20%
80%80%
80%
20%
SCK
Figure 11 Timing Diagram 2 during 3-wire Communication
Output data
80%
20%
50% 50% 50%
t
SCK
t
SCK
t
ACC
20%
80%
20%
SCK
Figure 12 Timing Diagram 3 during 3-wire Communication
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
11
Configuration of Data Communication
1. Data communication
After setting the CS pin "H", transmit the 4-bit fixed code "0110", after that, transmit a 3-bit command and 1-bit read / write
command. Next, data is output or input from B7. Regarding details, refer to " Serial Interface".
Command
0 1 1 0 C2 C1 C0 R / W
Fixed code
Read / write bit
B7 B6 B5 B4 B3 B2 B1 B0
1-byte data
Figure 13 Data Communication
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
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2. Configuration of command
8 types of command are available for the S-35190A. The S-35190A reads / writes the various registers by inputting these
fixed codes and commands. The S-35190A does not perform any operation with any codes and commands other than
those below. However, in case that the fixed codes or the commands are failed to be recognized in the 1st byte but are
successfully recognized in the 2nd and higher bytes, the commands are executed.
Table 10 List of Commands
Fixed
Code
Command
Data
C2 C1 C0
Description
B7 B6 B5 B4 B3 B2 B1 B0
0110
0 0 0
Status register 1 access
RESET
*1 24 / 12 SC0*2 SC1*2 INT1*3 INT2*3 BLD*4 POC*4
0 0 1
Status register 2 access
INT1FE INT1ME INT1AE
32kE SC2*2 SC3*2
INT2AE
TEST*5
0 1 0
Real-time data 1 access
(year data to)
Y1
M1
D1
W1
H1
m1
s1
Y2
M2
D2
W2
H2
m2
s2
Y4
M4
D4
W4
H4
m4
s4
Y8
M8
D8
*6
H8
m8
s8
Y10
M10
D10
*6
H10
m10
s10
Y20
*6
D20
*6
H20
m20
s20
Y40
*6
*6
*6
PM / AM
m40
s40
Y80
*6
*6
*6
*6
*6
*6
0 1 1
Real-time data 2 access
(hour data to)
H1
m1
s1
H2
m2
s2
H4
m4
s4
H8
m8
s8
H10
m10
s10
H20
m20
s20
PM / AM
m40
s40
*6
*6
*6
1 0 0
INT register 1 access
(alarm time 1: week / hour / minute)
(INT1AE = 1, INT1ME = 0,
INT1FE = 0)
W1
H1
m1
W2
H2
m2
W4
H4
m4
*6
H8
m8
*6
H10
m10
*6
H20
m20
*6
PM / AM
m40
A1WE
A1HE
A1mE
INT register 1 access
(output of user-set frequency)
(INT1ME = 0, INT1FE = 1)
1 Hz 2 Hz 4 Hz 8 Hz 16 Hz SC4 *2 SC5
*2 SC6 *2
1 0 1
INT register 2 access
(alarm time 2: week / hour / minute)
(INT2AE = 1)
W1
H1
m1
W2
H2
m2
W4
H4
m4
*6
H8
m8
*6
H10
m10
*6
H20
m20
*6
PM / AM
m40
A2WE
A2HE
A2mE
1 1 0
Clock correction register access
V0 V1 V2 V3 V4 V5 V6 V7
1 1 1
Free register access
F0 F1 F2 F3 F4 F5 F6 F7
*1. Write-only flag. The S-35190A initializes by writing "1" in this register.
*2. Scratch bit. This is a register which is available for read / write operations and can be used by users freely.
*3. Read-only flag. Valid only when using the alarm function. When the alarm time matches, this flag is set to "1", and it is
cleared to "0" when reading.
*4. Read-only flag. "POC" is set to "1" when power is applied. It is cleared to "0" when reading. Regarding "BLD", refer to
" Low Power Supply Voltage Detection Circuit".
*5. Test bit for ABLIC Inc. Be sure to set to "0" in use.
*6. No effect when writing. It is "0" when reading.
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
13
Configuration of Registers
1. Real-time data register
The real-time data register is a 7-byte register that stores the data of year, month, day, day of the week, hour, minute, and
second in the BCD code. To write / read real-time data 1 access, transmit / receive the data of year in B7, month, day, day
of the week, hour, minute, second in B0, in 7-byte. When you skip the procedure to access the data of year, month, day,
day of the week, read / write real-time data 2 accesses. In this case, transmit / receive the data of hour in B7, minute,
second in B0, in 3-byte.
The S-35190A transfers a set of data of time to the real-time data register when it recognizes a reading instruction.
Therefore, the S-35190A keeps precise time even if time-carry occurs during the reading operation of the real-time data
register.
Year data (00 to 99)
Month data (01 to 12)
Day data (01 to 31)
Hour data (00 to 23 or 00 to 11)
Minute data (00 to 59)
Second data (00 to 59)
Y80
Y40
Y4 Y8 Y10 Y20
Y2
Y1
B7 B0
M1 M2 M4 M8 M10 0 0 0
D1 D2 D4 D8 D10 D20 0 0
W1 W2 W4 0 0 0 0 0
H1 H4 H8 H10 H20
H2 0
m1
s2 s4 s8 s10 s20 s40 0
m8 m10 m20 m40 0
m4 m2
AM / PM
s1
Start bit of real-time data 2 data access
Start bit of real-time data 1 data access
Day of the week data (00 to 06)
B7 B0
B7 B0
B7 B0
B7 B0
B7 B0
B7 B0
Figure 14 Real-time Data Register
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
14
Year data (00 to 99): Y1, Y2, Y4, Y8, Y10, Y20, Y40, Y80
Sets the lower two digits of the Western calendar year (00 to 99) and links together with the auto calendar
function until 2099.
Example: 2053 (Y1, Y2, Y4, Y8, Y10, Y20, Y40, Y80) = (1, 1, 0, 0, 1, 0, 1, 0)
Month data (01 to 12): M1, M2, M4, M8, M10
Example: December (M1, M2, M4, M8, M10, 0, 0, 0) = (0, 1, 0, 0, 1, 0 ,0 ,0)
Day data (01 to 31): D1, D2, D4, D8, D10, D20
The count value is automatically changed by the auto calendar function.
1 to 31: Jan., Mar., May, July, Aug., Oct., Dec., 1 to 30: April, June, Sep., Nov.
1 to 29: Feb. (leap year), 1 to 28: Feb. (non-leap year)
Example: 29 (D1, D2, D4, D8, D10, D20, 0, 0) = (1, 0, 0, 1, 0, 1, 0, 0)
Day of the week data (00 to 06): W1, W2, W4
A septenary up counter. Day of the week is counted in the order of 00, 01, 02, …, 06, and 00. Set up day of the
week and the count value.
Hour data (00 to 23 or 00 to 11): H1, H2, H4, H8, H10, H20, AM / PM
In 12-hour mode, write 0; AM, 1; PM in the PM/AM bit. In 24-hour mode, users can write either 0 or 1. 0 is
read when the hour data is from 00 to 11, and 1 is read when from 12 to 23.
Example (12-hour mode): 11 p.m. (H1, H2, H4, H8, H10, H20, AM / PM, 0) = (1, 0, 0, 0, 1, 0, 1, 0)
Example (24-hour mode): 22 (H1, H2, H4, H8, H10, H20, AM / PM, 0) = (0, 1, 0, 0, 0, 1, 1, 0)
Minute data (00 to 59): m1, m2, m4, m8, m10, m20, m40
Example: 32 minutes (m1, m2, m4, m8, m10, m20, m40, 0) = (0, 1, 0, 0, 1, 1, 0, 0)
Example: 55 minutes (m1, m2, m4, m8, m10, m20, m40, 0) = (1, 0, 1, 0, 1, 0, 1, 0)
Second data (00 to 59): s1, s2, s4, s8, s10, s20, s40
Example: 19 seconds (s1, s2, s4, s8, s10, s20, s40, 0) = (1, 0, 0, 1, 1, 0, 0, 0)
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
15
2. Status register 1
Status register 1 is a 1-byte register that is used to display and set various modes. The bit configuration is shown below.
B7
RESET 12 / 24
R
R
R
R / W
SC1
B6 B5 B4 B3 B2 B1 B0
BLD INT2 POC INT1
SC0
R
R / W
W
R: Read
W: Write
R / W: Read / write
R / W
Figure 15 Status Register 1
B0: POC
This flag is used to confirm whether the power is on. The power-on detection circuit operates at power-on and B0 is
set to "1". This flag is read-only. Once it is read, it is automatically set to "0". When this flag is "1", be sure to initialize.
Regarding the operation after power-on, refer to " Power-on Detection Circuit and Register Status".
B1: BLD
This flag is set to "1" when the power supply voltage decreases to the level of detection voltage (VDET) or less. Users
can detect a drop in the power supply voltage. Once this flag is set to "1", it is not set to "0" again even if the power
supply increases to the level of detection voltage (VDET) or more. This flag is read-only. When this flag is "1", be sure to
initialize. Regarding the operation of the power supply voltage detection circuit, refer to " Low Power Supply
Voltage Detection Circuit".
B2: INT2, B3: INT1
This flag indicates the time set by alarm and when the time has reached it. This flag is set to "1" when the time that
users set by using the alarm interrupt function has come. The INT1 flag at alarm 1 interrupt mode and the INT2 flag at
alarm 2 interrupt mode are set to "1". Set "0" in INT1AE (B5 in the status register 2) or in INT2AE (B1 in the status
register 2) after reading "1" in the INT1 flag or in the INT2 flag. This flag is read-only. Once this flag is read, it is set to
"0" automatically.
B4: SC1, B5: SC0
These flags are SRAM type registers, they are 2 bits as a whole, can be freely set by users.
B6: 24 / 12
This flag is used to set 12-hour or 24-hour mode. Set the flag ahead of write operation of the real-time data register in
case of 24-hour mode.
0: 12-hour mode
1: 24-hour mode
B7: RESET
The internal IC is initialized by setting this bit to "1". This bit is write-only. It is always "0" when reading. When applying
the power supply voltage to the IC, be sure to write "1" to this bit to initialize the circuit. Regarding each status of
registers after initialization, refer to " Register Status After Initialization".
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
16
3. Status register 2
Status register 2 is a 1-byte register that is used to display and set various modes. The bit configuration is shown below.
B7
INT1FE INT1ME
R / W R / W
32kE
B6 B5 B4 B3 B2 B1 B0
SC3 SC2
INT1AE
R / W
R / W: Read / write
R / W R / W
R / W R / W R / W
INT2AE TEST
Figure 16 Status Register 2
B0: TEST
This is a test flag for ABLIC Inc. Be sure to set this flag to "0" in use. If this flag is set to "1", be sure to initialize to set
"0".
B1: INT2AE
This is an enable bit for alarm 2 interrupt. When this bit is "0", alarm 2 interrupt is disabled. When it is "1", it is enabled.
To use alarm 2 interrupt, access the INT register 2 after enabling this flag.
Caution Note that alarm 2 interrupt is output from the INT pin regardless of the settings in flags B4 to B7.
B2: SC3, B3: SC2
These are 2-bit SRAM type registers that can be freely set by users.
B4: 32kE, B5: INT1AE, B6: INT1ME, B7: INT1FE
These bits are used to select the output mode for the INT pin. Table 11 shows how to select the mode. To use alarm
1 interrupt, access the INT register 1 after setting the alarm 1 interrupt mode.
Table 11 Output Modes for INT Pin
32kE INT1AE INT1ME INT1FE INT Pin Output Mode
0 0 0 0 No interrupt
0 *1 0 1 Output of user-set frequency
0 *1 1 0 Per-minute edge interrupt
0 0 1 1 Minute-periodical interrupt 1 (50% duty)
0 1 0 0 Alarm 1 interrupt
0 1 1 1 Minute-periodical interrupt 2
1 *1 *1 *1 32.768 kHz output
*1. Don't care (both of 0 and 1 are acceptable).
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
17
4. INT register 1 and INT register 2
The INT register 1 is to set up the output of user-set frequency, or to set up alarm 1 interrupt. The INT register 2 is for
setting alarm 2 interrupt. Users are able to switch the output mode by using the status register 2. If selecting to use the
output mode for alarm interrupt by status register 2; this register works as the alarm-time data register. In the INT register
1, if selecting the output of user-set frequency by status register 2; this register works as the data register to set the
frequency for clock output. From the INT pin, a clock pulse and alarm interrupt are output, according to the or-condition
that these two registers have.
4. 1 Alarm interrupt
Users can set the alarm time (the data of day of the week, hour, minute) by using the INT register 1 and 2 which are
3-byte data registers. The configuration of register is as well as the data register of day of the week, hour, minute, in
the real-time data register; is expressed by the BCD code. Do not set a nonexistent day. Users are necessary to set
up the alarm-time data according to the 12 / 24 hour expression that they set by using the status register 1.
H8 H4 H2
H1
A1mE
m8
m4
m2
m1
H20
H10
m10 m20 m40
H8 H4
H2
H1
A2mE
m8
m4
m2
m1
H20
H10
m10 m20 m40
A1WE
0
0
W4
W2 W1
B7 B0
0 0
INT register 1
0
0
W4
W2
W1 0
0
INT register 2
A2WE
A1HE A2HE
B7 B0
B7 B0
B7 B0
B7 B0
B7 B0
AM /
PM AM /
PM
Figure 17 INT Register 1 and INT Register 2 (Alarm-Time Data)
The INT register 1 has A1WE, A1HE, A1mE at B0 in each byte. It is possible to make data valid; the data of day of the
week, hour, minute which are in the corresponding byte; by setting these bits to "1". This is as well in A2WE, A2HE,
A2mE in the INT register 2.
Setting example: alarm time "7:00 pm" in the INT register 1
(1) 12-hour mode (status register 1 B6 = 0)
set up 7:00 PM
Data written to INT register 1
Day of the week *1 *1 *1 *1 *1 *1 *1 0
Hour 1 1 1 0 0 0 1 1
Minute 0 0 0 0 0 0 0 1
B7 B0
*1. Don't care (both of 0 and 1 are acceptable).
(2) 24-hour mode (status register 1 B6 = 1)
set up 19:00 PM
Data written to INT register 1
Day of the week *1 *1 *1 *1 *1 *1 *1 0
Hour 1 0 0 1 1 0
1*2 1
Minute 0 0 0 0 0 0 0 1
B7 B0
*1. Don't care (both of 0 and 1 are acceptable).
*2. Set up PM/AM flag along with the time setting.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
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4. 2 Output of user-set frequency
The INT register 1 is a 1-byte data register to set up the output frequency. Setting each bit B7 to B3 in the register to
"1", the frequency which corresponds to the bit is output in the AND-form. SC4 to SC6 is 3-bit SRAM type registers
that can be freely set by users.
B7
R / W R / W
8 Hz
B6 B5 B4 B3 B2 B1 B0
SC4 16 Hz
4 Hz
R / W
R / W: Read / write
R / W R / W
R / W R / W R / W
SC5 SC6
2 Hz 1 Hz
Figure 18 INT Register 1 (Data Register for Output Frequency)
Example: B7 to B3 = 50h
16 Hz
8 Hz
4 Hz
2 Hz
INT pin output
Status register 2
• Set to INT1FE = 1
1 Hz
Figure 19 Example of Output from INT Register 1 (Data Register for Output Frequency)
1 Hz clock output is synchronized with second-counter of the S-35190A.
INT
pin output (1 Hz)
Second-counter n 1 n 2
n
Figure 20 1 Hz Clock Output and Second-counter
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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5. Clock correction register
The clock correction register is a 1-byte register that is used to correct advance / delay of the clock. When not using this
function, set this register to "00h". Regarding the register values, refer to " Function of Clock Correction".
B7
R / W R / W
V3
B6 B5 B4 B3 B2 B1 B0
V5 V4
V2
R / W
R / W: Read / write
R / W R / W
R / W R / W R / W
V6 V7
V1 V0
Figure 21 Clock Correction Register
6. Free register
The free register is a 1-byte SRAM type register that can be set freely by users.
B7
R / W R / W
F3
B6 B5 B4 B3 B2 B1 B0
F5 F4
F2
R / W
R / W: Read / write
R / W R / W
R / W R / W R / W
F6 F7
F1 F0
Figure 22 Free Register
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
20
Power-on Detection Circuit and Register Status
The power-on detection circuit operates by power-on the S-35190A, as a result each register is cleared; each register is set
as follows.
Real-time data register: 00 (Y), 01 (M), 01 (D), 0 (day of the week), 00 (H), 00 (M), 00 (S)
Status register 1: "01h"
Status register 2: "80h"
INT register 1: "80h"
INT register 2: "00h"
Clock correction register: "00h"
Free register: "00h"
"1" is set in the POC flag (B0 in the status register 1) to indicate that power has been applied. To correct the oscillation
frequency, the status register 2 goes in the mode the output of user-set frequency, so that 1 Hz clock pulse is output from
the INT pin. When "1" is set in the POC flag, be sure to initialize. The POC flag is set to "0" due to initialization so that the
output of user-set frequency mode is cleared. (Refer to " Register Status After Initialization".)
For the regular operation of power-on detection circuit, as seen in Figure 23, the period to power-up the S-35190A is that
the voltage reaches 1.3 V within 10 ms after setting the IC’s power supply voltage at 0 V. When the power-on detection
circuit is not working normally is; the POC flag (B0 in the status register 1) is not in "1", or 1 Hz is not output from the INT pin.
In this case, power-on the S-35190A once again because the internal data may be in the indefinite status.
Moreover, regarding the processing right after power-on, refer to " Flowchart of Initialization and Example of Real-time
Data Set-up".
Within 10 ms
1.3 V
0 V
*1
*1. 0 V indicates that there are no potential differences between the VDD
pin and VSS pin of the S-35190A.
Figure 23 How to Raise the Power Supply Voltage
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
21
Register Status After Initialization
The status of each register after initialization is as follows.
Real-time data register: 00 (Y), 01 (M), 01 (D), 0 (day of the week), 00 (H), 00 (M), 00 (S)
Status register 1: "0 B6 B5 B4 0 0 0 0 b"
(In B6, B5, B4, the data of B6, B5, B6 in the status register 1 at initialization is set.
Refer to Figure 24.)
Status register 2: "00h"
INT register 1: "00h"
INT register 2: "00h"
Clock correction register: "00h"
Free register: "00h"
CS
SCK
0000
1
0
1
0 0 0 1 1 0 X
SIO
Fixed code command
0 0 00 0 0 1 1 0 0 1
Fixed code command
0
0
0
0
1
00
0
Write to status register 1 Read from status register 1
B5: Not reset
B5 B7
Write "1" to reset flag and
SC0.
Figure 24 Status Register 1 Data at Initialization
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
22
Low Power Supply Voltage Detection Circuit
The S-35190A has a low power supply voltage detection circuit, so that users can monitor drops in the power supply
voltage by reading the BLD flag (B1 in the status register 1). There is a hysteresis width of approx. 0.15 V (typ.) between
detection voltage and release voltage (refer to " Characteristics (Typical Data)"). The low power supply voltage
detection circuit does the sampling operation only once in one sec for 15.6 ms.
If the power supply voltage decreases to the level of detection voltage (VDET) or less, "1" is set to the BLD flag so that
sampling operation stops. Once "1" is detected in the BLD flag, no sampling operation is performed even if the power
supply voltage increases to the level of release voltage or more, and "1" is held in the BLD flag.
Furthermore, the S-35190A does not initialize the internal circuit even if "1" is set to the BLD flag. If the BLD flag is "1" even
after the power supply voltage is recovered, the internal circuit may be in the indefinite status. In this case, be sure to
initialize the circuit. Without initializing, if the next BLD flag reading is done after sampling, the BLD flag gets reset to "0". In
this case, be sure to initialize although the BLD flag is in "0" because the internal circuit may be in the indefinite status.
V
DD
BLD flag
Stop Stop Stop
Sampling pulse
Hysteresis width
0.15 V approximatel
y
BLD flag reading
Detection voltage
Release
voltage
15.6 ms
1 s 1 s
Time keeping power
supply voltage (min.)
Figure 25 Timing of Low Power Supply Voltage Detection Circuit
Circuits Power-on and Low Power Supply Voltage Detection
Figure 26 shows the changes of the POC flag and BLD flag due to VDD fluctuation.
V
DD
BLD flag
Status register 1
readin
g
POC flag
V
SS
Low power supply voltage
detection voltage Low power supply voltage
detection voltage
Figure 26 POC Flag and BLD Flag
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
23
Correction of Nonexistent Data and End-of-Month
When users write the real-time data, the S-35190A checks it. In case that the data is invalid, the S-35190A does the
following procedures.
1. Processing of nonexistent data
Table 12 Processing of Nonexistent Data
Register Normal Data Nonexistent Data Result
Year data 00 to 99 XA to XF, AX to FX 00
Month data 01 to 12 00, 13 to 19, XA to XF 01
Day data 01 to 31 00, 32 to 39, XA to XF 01
Day of the week data 0 to 6 7 0
Hour data*1 24-hour 0 to 23 24 to 29, 3X, XA to XF 00
12-hour 0 to 11 12 to 20, XA to XF 00
Minute data 00 to 59 60 to 79, XA to XF 00
Second data*2 00 to 59 60 to 79, XA to XF 00
*1. In 12-hour mode, write the PM/AM flag (B1 in hour data in the real-time data register).
In 24-hour mode, the PM/AM flag in the real-time data register is omitted. However in the flag of reading, users are
able to read 0; 0 to 11, 1; 12 to 23.
*2. Processing of nonexistent data, regarding second data, is done by a carry pulse which is generated in 1 second, after
writing. At this point the carry pulse is sent to the minute-counter.
2. Correction of end-of-month
A nonexistent day, such as February 30 and April 31, is set to the first day of the next month.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
24
INT Pin Output Mode
These are selectable for the INT pin output mode;
Alarm 1 interrupt, alarm 2 interrupt, the output of user-set frequency, per-minute edge interrupt output, minute-periodical
interrupt output 1 and 2, 32.768 kHz output.
In alarm 1 interrupt / output of frequency; set data in the INT register 1. In alarm 2 interrupt, set data in the INT register 2. To
swith the output mode, use the status register 2. Refer to "3. Status register 2" in " Configuration of Registers".
When switching the output mode, be careful of the output status of the pin. Especially, when using alarm interrupt / output of
frequency, switch the output mode after setting "00h" in the INT register 1 or 2. Alarm 2 interrupt is dependent from other
modes. Regardless of other settings of mode if alarm 2 interrupt was generated, be careful that "L" is output from the INT
pin. In 32.768 kHz output / per-minute edge interrupt output / minute-periodical interrupt output, it is unnecessary to set data
in the INT register 1 or 2 for users.
Refer to the followings regarding each operation of output modes.
1. Alarm interrupt output
Alarm interrupt output is the function to output "L" from the INT pin, at the alarm time which is set by user has come. If
setting the pin output to "H", turn off the alarm function by setting "0" in INT1AE / INT2AE in the status register 2.
To set the alarm time, set the data of day of the week, hour, minute in the INT register 1 or 2, set the data of year, month,
day in the INT register 1 or 2. Refer to "4. INT register 1 and INT register 2" in " Configuration of Register".
1. 1 Alarm setting of "W (day of the week), H (hour), m (minute)"
INT register x alarm enable flag
AxHE = AxmE = AxWE = "1"
H h (m 1) m 59 s
Change by program Change by program
OFF
Alarm time matches
H h m m 00 s
01 s 59 s H h (m 1) m 00 s
Real-time data
*1
INT pin
INT1AE / INT2AE
Status register 2 setting
Alarm 1 interrupt
32kE
=
0, INT1ME
=
INT1FE = 0
Alarm 2 interrupt
None
mx Hx Wx
Comparator
INT register 1
INT register 2
A
larm interrupt
Real-time data
Minute
Hour
Second
Day YearMonth
Period when alarm time matches
W (day of the week)
Day of
the week
Change by program
*1. If users clear INT1AE / INT2AE once; "L" is not output from the INT pin by setting INT1AE / INT2AE enable again,
within a period when the alarm time matches real-time data.
Figure 27 Alarm Interrupt Output Timing
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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1. 2 Alarm setting of "H (hour)"
INT register x alarm enable flag
AxWE = AxmE = "0", AxHE = "1"
Comparator Alarm interrupt
Real-time data
(H
1) h 59 m 59 s
Change by program Change by program
OFF
Alarm time matches
H h 00 m 00 s 01 s 59 s H h 01 m 00 s
Change by program
Real-time data
Period when alarm time matches
*1
H h 59 m 59 s (H
1) h 00 m 00 s
OFF
Change by program
Alarm time
matches
*2
*1
INT register 1
INT register 2
INT1AE / INT2AE
INT pin
Status register 2 setting
Alarm 1 interrupt
32kE
= 0
, INT1ME
=
INT1FE = 0
Alarm 2 interrupt
None
mx Hx Wx Dx Mx Yx
Second Minute Hour
Day of
the week
Day Month Year
*1. If users clear INT1AE / INT2AE once; "L" is not output from the INT pin by setting INT1AE / INT2AE enable again,
within a period when the alarm time matches real-time data.
*2. If turning the alarm output on by changing the program, within the period when the alarm time matches real-time data,
"L" is output again from the INT pin when the minute is counted up.
Figure 28 Alarm Interrupt Output Timing
2. Output of user-set frequency
The output of user-set frequency is the function to output the frequency which is selected by using data, from the INT pin,
in the AND-form. Set up the data of frequency in the INT register 1.
Refer to "4. INT register 1 and INT register 2" in " Configuration of Register".
INT1FE
INT pin
OFF
Change by program
Status register 2 setting
32kE = 0, INT1AE = Don’t care (0 or 1), INT1ME = 0
Free-run output starts
Figure 29 Output Timing of User-set Frequency
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
26
3. Per-minute edge interrupt output
Per-minute edge interrupt output is the function to output "L" from the INT pin, when the first minute-carry processing is
done, after selecting the output mode. To set the pin output to "H", set "0" in INT1ME in the status register 2 to turn off the
output mode of per-minute edge interrupt.
INT1ME
INT pin
OFF
"L" is output again if this period is within 7.81 ms
*1
.
Change by program
Status register 2 setting
• 32kE = 0, INT1AE = Don’t care (0 or 1), INT1FE = 0
Minute-carry processing Minute-carry
processing
*1. Pin output is set to "H" by disabling the output mode within 7.81 ms, because the signal of this procedure is
maintained for 7.81 ms. Note that pin output is set to "L" by setting the output mode enable again.
Figure 30 Timing of Per-Minute Edge Interrupt Output
4. Minute-periodical interrupt output 1
The minute-periodical interrupt 1 is the function to output the one-minute clock pulse (Duty 50%) from the INT pin, when
the first minute-carry processing is done, after selecting the output mode.
INT1FE,
INT1ME
INT pin
"L" is output again if this period is within 7.81 ms
*1
.
Change by program (OFF)
Status register 2 setting
32kE = 0, INT1AE = 0
Minute-carry
processing
"H" is output again if this period is 7.81 ms or longer.
"L" is output at the next minute-carry processing.
30 s 30 s 30 s 30 s 30 s 30 s 30 s 30 s 30 s
Minute-carry
processing
Minute-carry
processing Minute-carry
processing
Minute-carry
processing
*1. Setting the output mode disable makes the pin output "H", while the output from the INT pin is in "L". Note that pin
output is set to "L" by setting the output mode enable again.
Figure 31 Timing of Minute-periodical Interrupt Output 1
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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5. Minute-periodical interrupt output 2
The output of minute-periodical interrupt 2 is the function to output "L", for 7.81 ms, from the INT pin, synchronizing with
the first minute-carry processing after selecting the output mode. However, during a reading operation in the real-time
data register, the procedure delays at 0.5 seconds max. thus output "L" from the INT pin also delays at 0.5 seconds max.
during writing in the real-time data register, some delay is made in the output period due to write timing and the
second-data of writing.
(1) During normal operation
7.81 ms 7.81 ms 7.81 ms
60 s 60 s
INT pin
Minute-carry processing Minute-carry processing Minute-carry processing
(2) During reading operation in the real-time data register
INT pin
7.81 ms
Serial
communication
7.81 ms 7.81 ms
0.5 s max.
60 s 60 s
Real-time data
read command
Real-time
data reading
Real-time data
read command
Real-time
data reading
Minute-carry processing Minute-carry processing Minute-carry processing
(Normal minute-
carry processing)
(3) During writing operation in the real-time data register
INT pin
7.81 ms
Real-time data
write timing
7.81 ms 7.81 ms
55 s 80 s
Minute-carry processing Minute-carry processing Minute-carry processing
45 s 10 s 30 s 50 s
The output period is shorter. The output period is longer.
Second data of writing: "50" s Second data of writing: "10" s
Figure 32 Timing of Minute-periodical Interrupt Output 2
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
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6. Operation of power-on detection circuit
When power is applied to the S-35190A, the power-on detection operates to set "1" in the POC flag (B0 in the status
register 1). A 1 Hz clock pulse is output from the INT pin.
Status register 2 setting
INT1FE
INT pin
OFF
0.5 s 0.5 s
Change by reset command32kE = 0, INT1AE = INT1ME = 0,
Figure 33 Output Timing of INT Pin during Operation of Power-on Detection Circuit
Function of Clock Correction
The function of clock correction is to correct advance / delay of the clock due to the deviation of oscillation frequency, in
order to make a high precise clock. For correction, the S-35190A adjusts the clock pulse by using a certain part of the
dividing circuit, not adjusting the frequency of the crystal oscillator. Correction is performed once every 20 seconds (or 60
seconds). The minimum resolution is approx. 3 ppm (or approx. 1 ppm) and the S-35190A corrects in the range of 195.3
ppm to 192.2 ppm (or of 65.1 ppm to 64.1 ppm) (Refer to Table 13). Users can set up this function by using the clock
correction register. Regarding how to calculate the setting data, refer to "1. How to calculate". When not using this
function, be sure to set "00h".
Table 13 Function of Clock Correction
Item B0 = 0 B0 = 1
Correction Every 20 seconds Every 60 seconds
Minimum resolution 3.052 ppm 1.017 ppm
Correction range 195.3 ppm to 192.2 ppm 65.1 ppm to 64.1 ppm
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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1. How to calculate
1. 1 If current oscillation frequency > target frequency (in case the clock is fast)
Correction value
*1
= 128 Integral value (Current oscillation frequency
actual measurement value
*2
) (Minimum resolution
*4
)
(Current oscillation frequency
actual measurement value
*2
) (Target oscillation frequency
*3
)
Caution The figure range which can be corrected is that the calculated value is from 0 to 64.
*1. Convert this value to be set in the clock correction register. For how to convert, refer to "(1) Calculation
example 1".
*2. Measurement value when 1 Hz clock pulse is output from the INT pin.
*3. Target value of average frequency when the clock correction function is used.
*4. Refer to "Table 13 Function of Clock Correction".
(1) Calculation example 1
In case of current oscillation frequency actual measurement value = 1.000070 [Hz], target oscillation frequency =
1.000000 [Hz], B0 = 0 (Minimum resolution = 3.052 ppm)
Correction value = 128 Integral value
()
1.000070 ()
1.000000
()
1.000070 ()
3.052 106
= 128
Integral value (22.93) = 128 22 = 106
Convert the correction value "106" to 7-bit binary and obtain "1101010b".
Reverse the correction value "1101010b" and set it to B7 to B1 of the clock correction register.
Thus, set the clock correction register:
(B7, B6, B5, B4, B3, B2, B1, B0) = (0, 1, 0, 1, 0, 1, 1, 0)
1. 2 If current oscillation frequency < target frequency (in case the clock is slow)
Correction value = Integral value (Current oscillation frequency
actual measurement value) (Minimum resolution)
(Current oscillation frequency
actual measurement value)
(Target oscillation frequency)
1
Caution The figure range which can be corrected is that the calculated value is from 0 to 62.
(1) Calculation example 2
In case of current oscillation frequency actual measurement value = 0.999920 [Hz], target oscillation frequency =
1.000000 [Hz]. B0 = 0 (Minimum resolution = 3.052 ppm)
Correction value = Integral value
()
1.000000 ()
0.999920
()
0.999920 ()
3.052 10-6 1
= Integral value (26.21) 1 = 26 1 = 27
Thus, set the clock correction register:
(B7, B6, B5, B4, B3, B2, B1, B0) = (1, 1, 0, 1, 1, 0, 0, 0)
(2) Calculation example 3
In case of current oscillation frequency actual measurement value = 0.999920 [Hz], target oscillation frequency =
1.000000 [Hz], B0 = 1 (Minimum resolution = 1.017 ppm)
Correction value = Integral value
()
1.000000 ()
0.999920
()
0.999920 ()
1.017 10-6 1
= Integral value (78.66) 1
This calculated value exceeds the correctable range 0 to 62.
B0 = "1" (minimum resolution = 1.017 ppm) indicates the correction is impossible.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
30
2. Setting values for registers and correction values
Table 14 Setting Values for Registers and Correction Values (Minimum Resolution: 3.052 ppm (B0 = 0))
B7 B6 B5 B4 B3 B2 B1 B0 Correction Value
[ppm]
Rate
[s / day]
1 1 1 1 1 1 0 0 192.3 16.61
0 1 1 1 1 1 0 0 189.2 16.35
1 0 1 1 1 1 0 0 186.2 16.09
0 1 0 0 0 0 0 0 6.1 0.53
1 0 0 0 0 0 0 0 3.1 0.26
0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 0 3.1 0.26
0 1 1 1 1 1 1 0 6.1 0.53
1 0 1 1 1 1 1 0 9.2 0.79
0 1 0 0 0 0 1 0 189.2 16.35
1 0 0 0 0 0 1 0 192.3 16.61
0 0 0 0 0 0 1 0 195.3 16.88
Table 15 Setting Values for Registers and Correction Values (Minimum Resolution: 1.017 ppm (B0 = 1))
B7 B6 B5 B4 B3 B2 B1 B0 Correction Value
[ppm]
Rate
[s / day]
1 1 1 1 1 1 0 1 64.1 5.54
0 1 1 1 1 1 0 1 63.1 5.45
1 0 1 1 1 1 0 1 62.0 5.36
0 1 0 0 0 0 0 1 2.0 0.18
1 0 0 0 0 0 0 1 1.0 0.09
0 0 0 0 0 0 0 1 0 0
1 1 1 1 1 1 1 1 1.0 0.09
0 1 1 1 1 1 1 1 2.0 0.18
1 0 1 1 1 1 1 1 3.0 0.26
0 1 0 0 0 0 1 1 63.1 5.45
1 0 0 0 0 0 1 1 64.1 5.54
0 0 0 0 0 0 1 1 65.1 5.62
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
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3. How to confirm a setting value for a register and the result of correction
The S-35190A does not adjust the frequency of the crystal oscillation by using the function of clock correction. Therefore
users cannot confirm if it is corrected or not by measuring output 32.768 kHz. When the function of clock correction is
being used, the cycle of 1 Hz clock pulse output from the INT pin changes once in 20 times or 60 times, as shown in
Figure 34.
INT pin
(1 Hz output)
a a a a
b
In case of B0 = 0: a = 19 times, b = Once
In case of B0 = 1: a = 59 times, b = Once
19 times or 59 times Once
Figure 34 Confirmation of the clock correction
Measure a and b by using the frequency counter*1. Calculate the average frequency (Tave) based on the measurement
results.
B0 = 0, Tave = (a 19 + b) 20
B0 = 1, Tave = (a 59 + b) 60
Calculate the error of the clock based on the average frequency (Tave). The following shows an example for confirmation.
Confirmation example: When B0 =0, 66h is set
Measurement results: a = 1.000080 Hz, b = 0.998493 Hz
Clock Correction Register Setting Value Average frequency [Hz] Per Day [s]
Before correction 00 h (Tave = a) 1.000080 86393
After correction 66 h (Tave = (a 19 + b) 20) 1.00000065 86399.9
Calculating the average frequency allows to confirm the result of correction.
*1. Use a high-accuracy frequency counter of 7 digits or more.
Caution Measure the oscillation frequency under the usage conditions.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
32
Serial Interface
The S-35190A receives various commands via 3-wire serial interface to read / write data. Regarding transmission is as
follows.
1. Data reading
When data is input from the SIO pin in synchronization with the falling of the SCK clock after setting the CS pin to "H", the
data is loaded internally in synchronization with the next rising of the SCK clock. When W / R bit = "1" is loaded at the
eighth rising of the SCK clock, the status of data reading is entered. Data corresponding to each command is then output
in synchronization with the falling of the subsequent SCK clock input. When the SCK clock is less than 8, the IC is in
the clock-wait status, and no processing is performed.
2. Data writing
When data is input from the SIO pin in synchronization with the falling of the SCK clock after setting the CS pin to "H", the
data is loaded internally in synchronization with the next rising of the SCK clock. When W / R bit = "0" is loaded at the
eighth rising of the SCK clock, the status of data writing is entered. In this status, the data, which is input in
synchronization with the falling of the subsequent SCK clock input, is written to registers according to each command. In
data writing, input a clock pulse which is equivalent to the byte of the register. As well as reading, when the SCK clock is
less than 8, the IC is in the clock-wait status, and no processing is performed.
3. Data access
3. 1 Real-time data 1 access
64
8
1
01 0 0 1 1 0 X
When reading: Output mode switching
CS
SCK
SIO
Year data Second data
B0B7
When reading:
Input mode switching
Fixed code
command
R / W
B0 B7
16 56
Figure 35 Real-Time Data 1 Access
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
33
3. 2 Real-time data 2 access
32
8
1
1 1 0 01 1 0 X
When reading: Output mode switching
CS
SCK
SIO
Hour data Second data
B0
B7
When reading:
Input mode switching
R / W
Minute data
B0
B7 B0
B7
Fixed code
command
16 24
Figure 36 Real-Time Data 2 Access
3. 3 Status register 1 access and status register 2 access
8
1
CS
SCK
*1
00011 0 X
When reading: Output mode switching
SIO
Status data When reading:
Input mode switching
B0
B7
R / W
16
Fixed code
command
*1. 0: Status register 1 selected
1: Status register 2 selected
Figure 37 Status Register 1 Access and Status Register 2 Access
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
34
3. 4 INT register 1 access and INT register 2 access
In read / write the INT register 1, data varies depending on the setting of the status register 2. Be sure to read / write
the INT register 1 after setting the status register 2. When setting the alarm by using the status register 2, these
registers work as 3-byte alarm time data registers, in other statuses, they work as 1-byte registers. When outputting
the user-set frequency, they are the data registers to set up the frequency.
Read / write the INT register 2 after setting INT2AE in the status register 2. When INT2AE is in "1", the INT register 2
works as for setting the 3-byte alarm time data. The INT register 2 does not have the function to output the user-set
frequency. Regarding details of each data, refer to "4. INT register 1 and INT register 2" in " Configuration of
Register".
Caution Users cannot use both functions of alarm 1 interrupt and the output of user-set frequency
simultaneously.
32
8 1
0 1 0 1 1 0X
When reading: Output mode switching
CS
SCK
SIO
Day of the
week data Minute data
B0
B7
When reading:
Input mode switching
*1
R / W
16 24
Hour data
B0
B7 B0
B7
Fixed code
command
*1. 0: INT register 1 selected
1: INT register 2 selected
Figure 38 INT Register 1 Access and INT Register 2 Access
8
1
CS
SCK
00101 1 0 X
When reading: Output mode switching
SIO
Frequency setting
data When reading:
Input mode switching
B0B7
R / W
16
Fixed code
command
Figure 39 INT Register 1 (Data Register for output frequency) Access
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
35
3. 5 Clock correction register access
8
1
CS
SCK
01101 1 0 X
When reading: Output mode switching
SIO
Clock correction
data When reading:
Input mode switching
B0
B7
R / W
16
Fixed code
command
Figure 40 Clock Correction Register Access
3. 6 Free register access
8
1
CS
SCK
11101 1 0 X
When reading: Output mode switching
SIO
Free register data When reading:
Input mode switching
B0B7
R / W
16
Fixed code
command
Figure 41 Free Register Access
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
36
Flowchart of Initialization and Example of Real-time Data Set-up
Figure 42 is a recommended flowchart when the master device shifts to a normal operation status and initiates
communication with the S-35190A. Regarding how to apply power, refer to " Power-on Detection Circuit and Register
Status". It is unnecessary for users to comply with this flowchart of real-time data strictly. And if using the default data at
initializing, it is also unnecessary to set up again.
Confirm data in status
register 1
OK
Set real-time data 1
Read real-time data 1*2
Wait for 0.5 s*1
Read status re
g
ister 1
POC = 0 NO
YES
BLD = 0
YES
OK
END
Read status re
g
ister 1
Read status re
g
ister 1
NO
NO
YES
START
POC = 1
Set 24-hour / 12-hour mode
to status register 1
Initialize
(status register 1 B7 = 1)
BLD = 0
YES
Read real-time data 1
NG
Confirm data in real-time
data 1
NG
NO
*1. Do not communicate for 0.5 seconds since the power-on detection circuit is in operation.
*2. Reading the real-time data 1 should be completed within 1 second after setting the real-time data 1.
Figure 42 Example of Initialization Flowchart
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
37
Examples of Application Circuits
VCC
XOUT
XIN
S-35190A
SIO
VSS
VDD
SCK
VSS
VCC
CPU
INT
CS
System power supply
Cg
10 k
10 k
Caution 1. Because the I/O pin has no protective diode on the VDD side, the relation of VCC VDD is possible.
But pay careful attention to the specifications.
2. Start communication under stable condition after power-on the power supply in the system.
Figure 43 Application Circuit 1
VSS
VCC
CPU
XOUT
XIN
S-35190A SIO
VSS
VDD
SCK
INT
CS
System power supply
Cg
10 k
10 k
Caution Start communication under stable condition after power-on the power supply in the system.
Figure 44 Application Circuit 2
Caution The above connection diagrams do not guarantee operation. Set the constants after performing
sufficient evaluation using the actual application.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
38
Adjustment of Oscillation Frequency
1. Configuration of crystal oscillation circuit
Since the crystal oscillation circuit is sensitive to external noise (the clock accuracy is affected), the following measures
are essential for optimizing the configuration.
Place the S-35190A, crystal oscillator, and external capacitor (Cg) as close to each other as possible.
Increase the insulation resistance between pins and the substrate wiring patterns of XIN and XOUT.
Do not place any signal or power lines close to the crystal oscillation circuit.
Locating the GND layer immediately below the crystal oscillation circuit is recommended.
Locate the bypass capacitor adjacent to the power supply pin of the S-35190A.
S-35190A
XOUT
XIN
R
f
=
100 M (typ.)
R
d
=
100 k (typ.)
C
d
=
8 pF (typ.)
C
g
C
d
R
d
R
f
Crystal oscillator: 32.768 kHz
C
L
= 6
pF
*1
C
g
= None
*2
to
9.1 pF
Parasitic capacitance
*3
Parasitic capacitance
*3
*1. When setting the value for the crystal oscillator's CL as 7 pF, connect Cd externally if necessary.
*2. The crystal oscillation circuit operates even when Cg is not connected. Note that the oscillation frequency is in the
direction that it advances.
*3. Design the board so that the parasitic capacitance is within 5 pF.
Figure 45 Connection Diagram 1
XIN
Crystal
oscillator
XOUT
VSS
C
g
8
7
6
5
1
2
3
4
S-35190A
Locate the GND layer in the
layer immediately below
Figure 46 Connection Diagram 2
Caution 1. When using the crystal oscillator with a CL exceeding the rated value (7 pF) (e.g: CL = 12.5 pF),
oscillation operation may become unstable. Use a crystal oscillator with a CL value of 6 pF or 7 pF.
2. Oscillation characteristics are subject to the variation of each component such as substrate parasitic
capacitance, parasitic resistance, crystal oscillator, and Cg. When configuring a crystal oscillation
circuit, pay sufficient attention for them.
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
39
2. Measurement of oscillation frequency
When the S-35190A is turned on, the internal power-on detection circuit operates and a signal of 1 Hz is output from the
INT pin to select the crystal oscillator and optimize the Cg value. Turn the power on and measure the signal with a
frequency counter following the circuit configuration shown in Figure 47.
If 1 Hz signal is not output, the power-on detection circuit does not operate normally. Turn off the power and then turn it on
again. For how to apply power, refer to " Power-on Detection Circuit and Register Status".
Remark If the error range is 1 ppm in relation to 1 Hz, the time is shifted by approximately 2.6 seconds per month
(calculated using the following expression).
10–6 (1 ppm) 60 seconds 60 minutes 24 hours 30 days = 2.592 seconds
INT
CS
SIO
SCK S-35190A
VDD
XOUT
XIN
VSS
C
g
10 kΩ
10 kΩ
10 kΩ
Open
Frequency
counter
Figure 47 Configuration of Oscillation Frequency Measurement Circuit
Caution 1. Use a high-accuracy frequency counter of 7 digits or more.
2. Measure the oscillation frequency under the usage conditions.
3. Since the 1 Hz signal continues to be output, initialization must be executed during normal
operation.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
40
3. Adjustment of oscillation frequency
3. 1 Adjustment by setting Cg
Matching of the crystal oscillator with the nominal frequency must be performed with the parasitic capacitance on the
board included. Select a crystal oscillator and optimize the Cg value in accordance with the flowchart below.
START
END
Set to center
of variable
capacitance
*3
Select a crystal
oscillator
*1
Variable
capacitance
Change C
g
Optimal
value
*2
Frequency
C
g
in
specification
Set C
g
Make fine adjustment
of frequency using
variable capacitance
YES
NO
YES
NO
NO
YES
Trimmer capacitor
Fixed capacitor
NO
YES
*1. Request a crystal manufacturer for a matching evaluation between the IC and the crystal oscillator. The
recommended crystal characteristic values are, CL value (load capacitance) = 6 pF, R1 value (equivalent serial
resistance) = 50 k max.
*2. The Cg value must be selected on the actual PCB since it is affected by parasitic capacitance. Select the external
Cg value in a range of 0 pF to 9.1 pF.
*3. Adjust the rotation angle of the variable capacitance so that the capacitance value is slightly smaller than the
center, and confirm the oscillation frequency and the center value of the variable capacitance. This is done in
order to make the capacitance of the center value smaller than one half of the actual capacitance value because a
smaller capacitance value increases the frequency variation.
Figure 48 Crystal Oscillator Setting Flow
Caution 1. The oscillation frequency varies depending on the ambient temperature and power supply
voltage. Refer to " Characteristics (Typical Data)".
2. The 32.768 kHz crystal oscillator operates more slowly at an operating temperature higher or
lower than20C to 25C. Therefore, it is recommended to set the oscillator to operate slightly
faster at normal temperature.
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
41
Precautions
Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement by products
including this IC of patents owned by a third party.
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
42
Characteristics (Typical Data)
1. Standby current vs. VDD characteristics 2. Current consumption when 32.768 kHz is
output vs. VDD characteristics
Ta = 25C, CL = 6 pF Ta = 25C, CL = 6 pF
0 5 6
1.0
0.8
0.6
0.4
0.2
0
V
DD
[V]
I
DD1
[A]
1 2 3 4
0 5 6
1.0
0.8
0.6
0.4
0.2
0
VDD [V]
IDD3
[A]
1 2 3 4
3. Current consumption during operation
vs. Input clock characteristics
4. Standby current
vs. Temperature characteristics
Ta = 25C, CL = 6 pF CL = 6 pF
0
30
25
20
15
10
5
0
I
DD2
[A]
200 400 600 800 1000
V
DD
= 5.0 V
V
DD
= 3.0 V
SCK frequency [kHz]
–40 75 85
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Ta [ C]
IDD1
[A]
–25 025 50
VDD = 5.0 V
VDD = 3.0 V
5. Standby current vs. C
g
characteristics 6. Oscillation frequency vs. C
g
characteristics
Ta 25C, CL = 6 pF Ta = 25C, CL = 6 pF
0 6 8 10
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
IDD1
[A]
VDD = 5.0 V
VDD = 3.0 V
2 4
Cg [pF]
100
80
60
40
20
0
–20
–40
–60
–80
–100
f/
f
[ppm]
024 6
Cg [pF]
8 10
VDD = 5.0 V
VDD = 3.0 V
3-WIRE REAL-TIME CLOCK
Rev.4.2_03 S-35190A
43
7. Oscillation frequency
vs. VDD characteristics
8. Oscillation frequency
vs. Temperature characteristics
Ta = 25C, Cg = 7.5 pF C
g
= 7.5 pF
50
40
30
20
10
0
10
20
30
40
50
f/f
[ppm]
0 5 6
V
DD
[V]
1 2 3 4
20
0
–20
–40
–60
–80
–100
–120
–140
f/f
[ppm]
–40 75 85
Ta [ C]
–25 0 25 50
V
DD
5.0 V
V
DD
3.0 V
9. Oscillation start time vs. Cg characteristics 10. Output current characteristics 1
(VOUT vs. IOL1)
Ta = 25C
INT
pin, Ta = 25C
0
500
450
400
350
300
250
200
150
100
50
0
t
STA
[ms]
2 810
4 6
C
g
[pF]
V
DD
= 5.0 V
V
DD
= 3.0 V
0
50
40
30
20
10
0
IOL1
[mA]
1 2 3 4
VOUT [V]
VDD = 5.0 V
VDD = 3.0 V
11. Output current characteristics 2
(VOUT vs. IOL2)
12. CS pin input current characteristics
SIO pin, Ta = 25C CS pin, Ta = 25C
0
50
40
30
20
10
0
I
OL2
[mA]
0.5 1 1.5 2
V
OUT
[V]
2.5
V
DD
= 5.0 V
V
DD
= 3.0 V
800
700
600
500
400
300
200
100
0
IIH
[A]
05 6
VIN [V]
123 4
VDD = 5.0 V
VDD = 3.0 V
3-WIRE REAL-TIME CLOCK
S-35190A Rev.4.2_03
44
13. BLD detection, release voltage, VDDT (min.)
vs. Temperature characteristics
CL = 6 pF
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
BLD
[V]
40 75 85
25 0 25 50
Ta [ C]
Release voltage
V
DDT
(min.)
Detection voltage
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
No. FJ008-A-P-SD-2.2
mm
SOP8J-D-PKG Dimensions
FJ008-A-P-SD-2.2
0.4±0.05
1.27
0.20±0.05
5.02±0.2
14
85
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
5
8
1
4
ø2.0±0.05
ø1.55±0.05 0.3±0.05
2.1±0.1
8.0±0.1
6.7±0.1
2.0±0.05
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
SOP8J-D-Carrier Tape
No. FJ008-D-C-SD-1.1
FJ008-D-C-SD-1.1
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
QTY. 2,000
2±0.5
13.5±0.5
60°
2±0.5
ø13±0.2
ø21±0.8
Enlarged drawing in the central part
SOP8J-D-Reel
No. FJ008-D-R-SD-1.1
FJ008-D-R-SD-1.1
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
QTY. 4,000
2±0.5
13.5±0.5
60°
2±0.5
ø13±0.2
ø21±0.8
Enlarged drawing in the central part
SOP8J-D-Reel
No. FJ008-D-R-S1-1.0
FJ008-D-R-S1-1.0
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
TSSOP8-E-PKG Dimensions
No. FT008-A-P-SD-1.2
FT008-A-P-SD-1.2
0.17±0.05
3.00 +0.3
-0.2
0.65
0.2±0.1
14
5
8
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
ø1.55±0.05
2.0±0.05
8.0±0.1 ø1.55 +0.1
-0.05
(4.4)
0.3±0.05
1
45
8
4.0±0.1
Feed direction
TSSOP8-E-Carrier Tape
No. FT008-E-C-SD-1.0
FT008-E-C-SD-1.0
+0.4
-0.2
6.6
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
Enlarged drawing in the central part
No. FT008-E-R-SD-1.0
2±0.5
ø13±0.5
ø21±0.8
13.4±1.0
17.5±1.0
3,000
QTY.
TSSOP8-E-Reel
FT008-E-R-SD-1.0
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
Enlarged drawing in the central part
2±0.5
ø13±0.5
ø21±0.8
13.4±1.0
17.5±1.0
4,000
QTY.
TSSOP8-E-Reel
FT008-E-R-S1-1.0
mm
No. FT008-E-R-S1-1.0
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
1.97±0.03
0.2±0.05
0.48±0.02
0.08
mm
SNT-8A-A-PKG Dimensions
PH008-A-P-SD-2.1
No. PH008-A-P-SD-2.1
0.5
+0.05
-0.02
123 4
56
78
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
PH008-A-C-SD-2.0
SNT-8A-A-Carrier Tape
No. PH008-A-C-SD-2.0
Feed direction
4.0±0.1
2.0±0.05
4.0±0.1
ø1.5 +0.1
-0
ø0.5±0.1
2.25±0.05
0.65±0.05
0.25±0.05
2134
7865
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
Enlarged drawing in the central part
QTY.
PH008-A-R-SD-1.0
mm
SNT-8A-A-Reel
No. PH008-A-R-SD-1.0
5,000
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
SNT-8A-A
-Land Recommendation
PH008-A-L-SD-4.1
0.3
0.2
0.52
2.01
0.52
No. PH008-A-L-SD-4.1
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1. (0.25 mm min. / 0.30 mm typ.)
2. (1.96 mm ~ 2.06 mm)
1.
2. 0.03 mm
3.
4. SNT
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package (1.96 mm to 2.06mm).
1
2
1.
2. (1.96 mm ~ 2.06 mm)
(0.25 mm min. / 0.30 mm typ.)
Disclaimers (Handling Precautions)
1. All the information described herein
(product data,
specifications,
figures,
tables,
programs,
algorithms and application
circuit examples,
etc.)
is current as of publishing date of this document and is subject to change without notice.
2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of
any specific mass-production design.
ABLIC Inc. is not responsible for damages caused by the reasons other than the products described herein
(hereinafter "the products") or infringement of third-party intellectual property right and any other right due to the use
of the information described herein.
3. ABLIC Inc. is not responsible for damages caused by the incorrect information described herein.
4. Be careful to use the products within their specified ranges. Pay special attention to the absolute maximum ratings,
operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not responsible for damages caused by failures and / or accidents, etc. that occur due to the use of the
products outside their specified ranges.
5. When using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.
6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related
laws, and follow the required procedures.
7. The products must not be used or provided (exported) for the purposes of the development of weapons of mass
destruction or military use. ABLIC Inc. is not responsible for any provision (export) to those whose purpose is to
develop, manufacture, use or store nuclear, biological or chemical weapons, missiles, or other military use.
8. The products are not designed to be used as part of any device or equipment that may affect the human body, human
life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control
systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses. Do
not apply the products to the above listed devices and equipments without prior written permission by ABLIC Inc.
Especially, the products cannot be used for life support devices, devices implanted in the human body and devices
that directly affect human life, etc.
Prior consultation with our sales office is required when considering the above uses.
ABLIC Inc. is not responsible for damages caused by unauthorized or unspecified use of our products.
9. Semiconductor products may fail or malfunction with some probability.
The user of the products should therefore take responsibility to give thorough consideration to safety design including
redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or
death, fires and social damage, etc. that may ensue from the products' failure or malfunction.
The entire system must be sufficiently evaluated and applied on customer's own responsibility.
10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the
product design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc.
The information described herein does not convey any license under any intellectual property rights or any other
rights belonging to ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any
part of this document described herein for the purpose of disclosing it to a third-party without the express permission
of ABLIC Inc. is strictly prohibited.
14. For more details on the information described herein, contact our sales office.
2.0-2018.01
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