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ELECTRIC
MITSUBISHI
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
MITSUBISHI<Dig.Ana.INTERFACE>
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
DESCRIPTION
The M62001~8 are semiconductor integrated circuits whose
optimum use is for the detection of the rise and fall in the
power supply to a microcomputer system in order to reset or
release the microcomputer system.
The M62001~8 carry out voltage detection in 2 steps and
have 2 output pins.As Bi-CMOS process and low power
dissipating circuits are employed,they output optimum signals
through each output pin to a system that requires RAM
backup, As output signals,interruption(INT) and compulsive
reset(RESET) signals are available.The interruption
signal(INT) is used to alter the microcomputer from normal
mode to backup mode and vice versa. these output signals are
classified into pulse type(M62001~M62004) and hold type
(M62005~M62008).
FEATURES
•
Circuit current
Icc=5µA(Typ.,normal mode,Vcc=5.0V)
Icc=1µA(Typ.,backup mode,Vcc=2.5V)
•Two-step detection of supply voltage
Detection voltage in normal mode (2 types)
Vs=4.45V/4.25V(Typ.)
Detection voltage in backup mode
VBATT=2.15V(Typ.)
•Two outputs
Reset output (RESET):Output of compulsive reset signal
Interruption output(INT):Output of interruption signal
•Two types of output forms:CMOS and open drain
•Two types of interruption output (INT) signals
Pulse type (M62001~M62004)
Hold type (M62005~M62008)
•Two types of outline packages
5-pin plastic SIP (single in-line package)
8-pin plastic SOP (mini flat package)
•Output based on RAM backup mode (See the timing chart.)
BLOCK DIAGRAM
APPLICATION
Prevention of malfunction of microcomputer systems in
electronic,equipment such as OA equipment, industrial
equipment,and home-use electronic appliances.
1
PIN CONFIGURATION (TOP VIEW)
8
5
6
7
1
4
3
2
4
1
2
3
5
Outline 5P5T(M62001L~8L)
Outline 8P2S-A(M62001FP~8FP)
NC:NO CONNECTION
+
-
+
-
5
INTERRUPTION SIGNAL
GENERATION BLOCK
RESET SIGNAL
GENERATION BLOCK
2
3
4
1
GND(GROUND PIN) Cd(PIN TO DELAY CAPACITANCE)
RESET
INT
Vcc
NOTE:This is an example showing pin Nos.of M62001L~8L.(See PIN CONFIGURATION.)
Vcc
Cd
RESET
INT
GND
INT
GND
NC
NC
RESET
Cd
Vcc
NC
Bi-CMOS process realizes a configuration of low current
dissipating circuits.
M62001L
M62001FP
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M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
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LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
2
V
mW/°C
ELECTRICAL CHARACTERISTICS
(Ta=25°C, unless otherwise noted,These ratings commonly apply to the M62001L/8L.)
Symbol Test conditions Limits Unit
Parameter Min. Typ. Max.
4.45
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C, unless otherwise noted,These ratings commonly apply to the M62001L/FP~M62008L/FP.)
Symbol Ratings Unit
Supply voltage 8
Pd
Topr
Power dissipation
-40 ~ +125
V
Output sink current
Operating temperature
Vcc
Tstg Storage temperature -20 ~ +75
5
4.4
VBATT Battery voltage
4.30
Supply voltage
2.00
4.60
Reset level at backup
Parameter
°C
°C
Conditions
ISINK
KThermal derating (Ta≥25°C) 440 mA
mW
mV100
0.4
µA
ICC Circuit current
Vsat1 Sink ability 0.2
1.0
5.0 20
4
Vcc=5.0V:In normal mode
Vcc=4V,Io=4mA
(Output saturation voltage of N-ch transistor)
Vs Interruption level
during Vcc drop
(Equivalent to VSL)
(M62001,M62002,
M62005,M62006)
(M62003,M62004,
M62007,M62008) 4.25
4.05 4.45
2.15 2.30 V
∆Vs Hysteresis voltage ∆Vs=VSH-VSL
Vcc=2.5V:In backup mode
Vsat2 Source ability Vcc=4V,Io=1mA
(Output saturation voltage of P-ch transistor:
[CMOS output] M62001,M62003,
M62005,M62007) 0.40.2
V
V
td Delay time Output pulse width (M62001,M62002,
M62003,M62004)
50 ms
tpw
tRESET
tINT
Pulse width
Reset output response time
Interruption output reset time
External capacitance Cd=0.33µF
Time between Vcc(when falling)=VBATT and
output of RESET signal
Time between Vcc(when falling)=VS and
output of INT signal
7
30
100
µS
µS
µS
SUMMARY OF M62001L/FP~M62008L/FP
Type Output form Interruption signal output mode
CMOS
Open drain
Supply voltage detection level Vs(V) Battery voltage detection level VBATT(V)
M62001
M62002
M62003
M62004
M62005
M62006
M62007
M62008
4.45
4.25
4.45
4.25
2.15
CMOS
Open drain
CMOS
Open drain
CMOS
Open drain
Pulse output
Hold output
10
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LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
3
CIRCUIT CURRENT vs.
SUPPLY VOLTAGE
0
2
4
6
8
0 2 4 6 8 10
SUPPLY VOLTAGE Vcc(V)
TYPICAL CHARACTERISTICS
10
THERMAL DERATING
(MAXIMUM RATING)
0
200
400
600
800
025 50 75 100 125
AMBIENT TEMPERATURE Ta(°C)
1000
RESET OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
0
1
2
3
4
0 1 2 3 4 5
SUPPLY VOLTAGE Vcc(V)
5
INTERRUPTION OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
0
1
2
3
4
01 2 3 4
SUPPLY VOLTAGE Vcc(V)
5
DELAY CAPACITANCE vs. DELAY TIME
0.01
0.1
1.0
110 100 1000
DELAY TIME td(msec)
10
LIMIT OPERATING VOLTAGE
(OPEN DRAIN TYPE)
0
0.5
1.0
1.5
00.5 1.0 1.5 2.0
SUPPLY VOLTAGE Vcc(V)
2.0
5
VBATT
VSH
VSH
VSL
RL=10kΩ
RL=100kΩ
RL=1MΩ
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LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
4
CIRCUIT CURRENT vs.
AMBIENT TEMPERATURE
0
1
2
3
4
-40 -20 020
AMBIENT TEMPERATURE Ta(°C)
5
DETECTION VOLTAGE vs.
AMBIENT TEMPERATURE
2.05
2.10
AMBIENT TEMPERATURE Ta(°C)
AMBIENT TEMPERATURE Ta(°C)
INTERRUPTION OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
0
1
2
3
4
01 2 3 4
SUPPLY VOLTAGE Vcc(V)
5
5
Nch OUTPUT SATURATION VOLTAGE vs.
OUTPUT SINK CURRENT
0
0.1
0.2
0.3
0.4
0123 4
OUTPUT SINK CURRENT Isink(mA)
0.5
5
Pch OUTPUT SATURATION VOLTAGE vs.
OUTPUT SOURCE CURRENT
001 2 3 4
OUTPUT SOURCE CURRENT Isource(mA)
5
40 60 80 100
6
7
-40 -20 020 40 60 80 100
2.15
2.20
DETECTION VOLTAGE vs.
AMBIENT TEMPERATURE
(DETECTION AT 4.45V TYPE)
4.35
4.40
-40 -20 020 40 60 80 100
4.45
4.50
0.1
0.2
0.3
0.4
0.5
Vcc=5V
Vcc=2V
Vcc=3V
Vcc=5 4V
Vcc
RES
GND
V
Vsat
Isource
Vcc=4V
Vcc
GND
V
Vsat
Isink
INT
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ELECTRIC
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M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
MITSUBISHI<Dig.Ana.INTERFACE>
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
5
OPERATION PRINCIPLE
DESCRIPTION
In general,the memory backup function of
a microcomputer,as shown in figure,uses two diodes to switch
between main power supply and backup power supply.The
M62001~M62008 are ICs that,in such memory backup
operation,monitor in 2 steps each voltage on the VDD line.
VDD
INT
RESET
INT
RESET
MAIN POWER
SUPPLY BACKUP
POWER
SUPPLY M62001
Vcc
MICROCOMPUTER
SYSTEM
The ICs have an intelligent sequence such as substantial
hysteresis action of RESET toward normal state at restoration of
supply voltage,as well as 2-step detection in low power
dissipation mode.
OPERATION IN DETAIL
1.Two Step Detection
The ICs perform 2-step detection of supply voltage and have 2
output pins (INT and RESET).Although they have 2 comparators
for 2-step detection,they differ significantly from such that are
simply provided with independent detectors,because the RESET
output signal is dependent at power-up and the like upon the
INT output signal.
2.INT output (Detection of 4.45V and 4.25V)
The INT output at the power-up of supply voltage detects VSH
(4.45V/4.25V)to inform the microcomputer system of the fact
that the supply voltage has reached its normal level.When the
supply voltage drops from its normal level to
VSL(4.45V/4.25V)an interruption signal is output to alter the
microcomputer system into RAM backup mode. The
microcomputer at this point enters sleep state and secures
memory by a stop command issued by the interruption
signal.These detection voltage ,VSH the rise,and VSL the fall,of
supply voltage,have a 100-mV hysteresis voltage between
themselves. VSH-VSL=100(mV)
..
INT OUTPUT VOLTAGE VS.
SUPPLY VOLTAGE
SUPPLY VOLTAGE Vcc(V)
0
1
2
3
4
5
4.0 4.2 4.4 4.6 4.8 5.0
VSL VSH
3.RESET Output (Detection of 2.15V)
The RESET outputs a signal to prevent the microcomputer from
malfunctioning due to a drop in supply voltage.
When powering up,RESET is kept at low level until the supply
voltage reaches VSH.If the supply voltage rises to VSH,RESET
is set to high level.By inserting a capacitor between the Cd pin
and GND,it is possible to produce a desired delay time (td).To
set a delay time,equation below is used.
td=1.52X10 XCd(sec)
..
5
Once the supply voltage has exceeded VSH and the RESET
output is set to high level,RESET maintains the high level until
the supply voltage drops to VBATT.When the supply voltage
drops to VBATT,RESET goes low thereby resetting and
initializing the microcomputer.
The RESET output has a large hysteresis voltage of
approximately 2V between the rise in supply voltage at power-
up and its fall.
0
1
2
3
4
5
2345
VSH
VBATT
SUPPLY VOLTAGE Vcc
RESET OUTPUT VOLTAGE VS.
SUPPLY VOLTAGE
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MITSUBISHI<Dig.Ana.INTERFACE>
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
6
OPERATION DESCRIPTION
1 If Vcc rises to VSH(4.55V/4.35V),the INT output it set to
high level.
*1.A pulse is output if INT is of pulse output type.
2 RESET goes high td(s) after VSH
*td=1.52X105XC(sec)
3 If Vcc drops to VSH(4.55V/4.25V),INT goes low.
*1.A pulse is output if INT is of pulse output type.
*2.The RESET output continues to be held high.
4 If Vcc returns to VSH
,the INT output is set to high level.
APPLICATION EXAMPLE
5 Same as 3 .
6 If Vcc becomes lower than VBATT
(2.15V),the RESET
output is set to low thereby resetting the microcomputer
and initializing system.
7 Same as 1 .
8 Same as 2 .
9 Same as 3 and 5 .
POWER SUPPLY
Vcc(+5V)
BACKUP POWER
SUPPLY
VBATT(+3V)
Vcc
MICROCOMPUTER
SYSTEM RESET IC
+
-
+
-
INT
INTERRUPTION INPUT
RESET
RESET INPUT
INT
RESET
+
SMOOTHING
CAPACITOR 100µF
DELAY CAPACITOR Cd
0.33µF
OSCILLATOR
(COMPULSIVE
RESET SIGNAL)
(INTERRUPTION
RESET SIGNAL)
INT
RESET
M6200X
VDD
POWER SUPPLY PIN
CLOCK OUTPUT
MICROCOMPUTER
SYSTEM
GND
GND
GND
GND
VSH
VSL
VSH VSL VSH VSL VBATT VSH VSL VBATT
Vcc
INT
(HOLD OUTPUT TYPE)
INT
(PULSE OUTPUT TYPE)
RESET td
PULSE WIDTH
7µsec
td
UNCERTAIN AREA
UNCERTAIN AREA
UNCERTAIN AREA
12345 6
7
8910
10 Same as 6 .