HCS362-I/ST - Microchip Technology

 2003 Microchip Technology Inc. DS80140C-page 1

HCS362

Clarifications/Corrections to the Data Sheet:

In the Device Data Sheet (DS40189D), the following

clarifications and corrections should be noted.

1. Module: Low Voltage Detector

In Section 2.1.3, Low Voltage Detector, page 6, typical

levels have been adjusted to more accurately reflect

actual device performance. MPLAB® 5.70.40 and

higher will match these modified typical values.

2.1.3 LOW VOLTAGE DETECTOR

A low battery voltage detector onboard the HCS362

can indicate when the operating voltage drops below a

predetermined value. There are eight options available

depending on the VLOW[0..2] configuration options.

The options provided are:

000 - 2.15V 100 - 4.20V

001 - 2.25V 101 - 4.40V

010 - 2.35V 110 - 4.60V

011 - 2.45V 111 - 4.80V

HCS362 Data Sheet Errata

HCS362

DS80140C-page 2  2003 Microchip Technology Inc.

TABLE 1: CONFIG_0

Bit Address Field Description Values

0OSC_0 Oscillator adjust 0000 - nominal

1000 - fastest

0111 - slowest

1OSC_1

2OSC_2

3OSC_3

4VLOW_0 VLOW select nominal values

000 - 2.15V

001 - 2.25V

010 - 2.35V

011 - 2.45V

100 - 4.20V

101 - 4.40V

110 - 4.60V

111 - 4.80V

5VLOW_1

6VLOW_2

7BSEL_0 Bitrate select 00 - TE = 100 µs

01 - TE = 200 µs

02 - TE = 400 µs

03 - TE = 800 µs

8BSEL_1

9MTX_0 Minimum number of code

words

00 - 1

01 - 2

10 - 4

11 - 8

10 MTX_1

11 GUARD_0 Guard time select 00 - 0 ms (1 TE)

01 - 6.4 ms + 2 TE

10 - 25.6 ms + 2 TE

11 - 76.8 ms + 2 TE

12 GUARD_1

13 TIMOUT_0 00 - No Timeout

01 - 0.8 s to 0.8 s + 1 code word

10 - 3.2 s to 3.2 s + 1 code word

11 - 25.6 s to 25.6 s + 1 code word

14 TIMOUT_1

15 CTSEL CTSEL 0 = TIME bits

1 = CRC bits

 2003 Microchip Technology Inc. DS80140C-page 3

HCS362

2. Module: Transmission Modulation

Format

Corrections to Figure 3-3 and 3-4, page 9. Clock

count should be 12 not 16, and 31 TE preamble

should be 23 TE preamble.

Corrections to Figure 3-5, page 11. The CTSEL bit

values should be changed as follows:

•XSER = 0, CTSEL = 0 to CTSEL = 1

•XSER = 1, CTSEL = 0 to CTSEL = 1

•XSER = 0, CTSEL = 1 to CTSEL = 0

•XSER = 1, CTSEL = 1 to CTSEL = 0

FIGURE 3-3: TRANSMISSION FORMAT (PWM)

FIGURE 3-4: TRANSMISSION FORMAT (MANCHESTER)

LOGIC "1"

Guard

Time

23 TEEncrypted

Portion

Fixed Code

Portion

LOGIC "0"

Preamble 3-10

Header

112

GuardPreamble Header Encrypted Fixed Code

START bit STOP bit

TimePortion Portion

bit 0

bit 1 bit 2

LOGIC "0"

LOGIC "1"

TETE

TBP

HCS362

DS80140C-page 4  2003 Microchip Technology Inc.

FIGURE 3-5: CODE WORD DATA FORMAT CONFIGURATION WORDS

Transmission Direction LSB First

Fixed Portion (32 bits)

QUE

2 bits

CRC

2 bits

VLOW

1-bit

SERIAL NUMBER

(32 bits)

Q1 Q0 C1 C0

BUT

4 bits

Counter

Overflow

2 bits

DISC

10 bits

Synchronization

16 bits

Counter

15 0

S2 S1 S0 S3 OVR1 OVR0

Encrypted Portion (32 bits)

With XSER = 1, CTSEL = 1

Status Information

(5 bits)

Fixed Portion (32 bits)

QUE

2 bits

TIME

2 bits

VLOW

1-bit

SERIAL NUMBER

(28 bits)

Q1 Q0 T1 T0 S2 S1 S0 S3

With XSER = 1, CTSEL = 0

Status Information

(5 bits)

BUT

4 bits

BUT

4 bits

Counter

Overflow

2 bits

DISC

10 bits

Synchronization

16 bits

Counter

15 0

S2 S1 S0 S3 OVR1 OVR0

Encrypted Portion (32 bits)

Fixed Code Portion (32 bits)

QUE

2 bits

CRC

2 bits

VLOW

1-bit

SERIAL NUMBER

(28 bits)

Q1 Q0 C1 C0 S2 S1 S0 S3

Status Information

(5 bits)

BUT

4 bits

BUT

4 bits

Counter

Overflow

2 bits

DISC

10 bits

Synchronization

16 bits

Counter

15 0

S2 S1 S0 S3 OVR1 OVR0

Encrypted Portion (32 bits)

With XSER = 0, CTSEL = 1

Fixed Portion (32 bits)

QUE

2 bits

TIME

2 bits

VLOW

1-bit

SERIAL NUMBER

(32 bits)

Q1 Q0 T1 T0

BUT

4 bits

Counter

Overflow

2 bits

DISC

10 bits

Synchronization

16 bits

Counter

15 0

S2 S1 S0 S3 OVR1 OVR0

Encrypted Portion (32 bits)

Status Information

(5 bits)

With XSER = 0, CTSEL = 0

 2003 Microchip Technology Inc. DS80140C-page 5

HCS362

3. Module: LED Output

Corrections to Figure 3-7, page 12. The duty cycle

TLEDON should be 100 ms not 25 ms and

TLEDOFF should be 400 ms not 500 ms.

Correction to Figure 3-8, page 12. Duty cycle TLEDOFF

should be 820 ms not 800 ms.

FIGURE 3-7: LED OPERATION (LED = 1)

FIGURE 3-8: LED OPERATION (LED = 0)

S[3210]

LED

VDD > VLOW

TLEDON = 100 ms

TLEDOFF

LED

VDD < VLOW

TLEDON

TLEDOFF = 400 ms

LED

VDD < VLOW

S[3210]

LED

VDD > VLOW TLEDON TLEDOFF

TLEDON = 200 ms TLEDOFF = 820 ms

HCS362

DS80140C-page 6  2003 Microchip Technology Inc.

4. Module: Configuration Words

Correction to Table 4-4, page 18. Bit 12 values should

be changed as shown below:

TABLE 4-4: SEED_3

Bit

Address Field Description Values

0SEED_48 Seed Most Significant word —

1SEED_49

2SEED_50

... ...

9SEED_57

10 SEED_58

11 SEED_59

12 LED LED output timing 0 = VBAT>VLOW

LED blink 200/820 ms

VBAT<VLOW

LED not blinking

1 = VBAT>VLOW

LED blink 100/400 ms

VBAT<VLOW

LED blink once

13 MOD Modulation Format 0 = PWM

1 = MANCHESTER

14 RFEN RF Enable/S3 multiplexing 0 - Enabled

(S3 only sensed 2 seconds after the last

button is released)

1 - Disabled

(S3 same as other S inputs)

15 HEADER Header Length 0 = short Header, TH = 3 x TE

1 = standard Header, TH = 10 x TE

 2003 Microchip Technology Inc. DS80140C-page 7

HCS362

5. Module: Electrical Characteristics

Corrections to Figure 7-2, 7-3, 7-5 and 7-6, page

27 and 28. Clock count should be 12 not 16, and

31 TE preamble should be 23 TE preamble.

Corrections to Table 7-4 and 7-5, page 29. TP

BSEL values should be 23 not 31.

FIGURE 7-2: PWM FORMAT SUMMARY (MOD=0)

FIGURE 7-3: PWM PREAMBLE/HEADER FORMAT (MOD=0)

FIGURE 7-5: MANCHESTER FORMAT SUMMARY (MOD=1)

LOGIC "1"

Guard

Time

23 TEEncrypted Portion Fixed Portion

LOGIC "0"

Preamble

Header

10xTE

112

of Transmission

Preamble

50% Duty Cycle

50% Duty Cycle Preamble

P1 P12

23 TE3 or 10xTE Header Data Bits

bit 0 bit 1

Guard

Preamble Header

Encrypted Portion Fixed Portion

START bit STOP bit

Time

bit 0

bit 1

bit 2

LOGIC "0"

LOGIC "1"

TETE

4XTE

23 TE

of Transmission of Transmission

Preamble

50% Duty Cycle

TPB

HCS362

DS80140C-page 8  2003 Microchip Technology Inc.

FIGURE 7-6: MANCHESTER PREAMBLE/HEADER FORMAT (MOD=1)

TABLE 7-4: CODE WORD TRANSMISSION TIMING PARAMETERS – PWM MODE(1,3)

TABLE 7-5: CODE WORD TRANSMISSION TIMING PARAMETERS—MANCHESTER MODE(1,3)

VDD = +2.0V to 6.3V

Commercial (C): TAMB = 0 °C to +70 °C

Industrial (I): TAMB = -40 °C to +85 °C

BSEL Value

11 10 01 00

Symbol Characteristic Typical Typical Typical Typical Units

TEBasic pulse element 800 400 200 100 µs

TBP Bit width 3333TE

TPPreamble duration 23 23 23 23 TE

THHeader duration(4) 10 10 10 10 TE

TCData duration 207 207 207 207 TE

TGGuard time(2) 27.2 26.4 26 25.8 ms

— Total transmit time 220 122 74 50 ms

— Data Rate 417 833 1667 3334 bps

Note 1: The timing parameters are not tested but derived from the oscillator clock.

2: Assuming GUARD = 10 option selected in CONFIG_0 Configuration Word.

3: Allow for a +/- 14% tolerance on the encoder internal oscillator after calibration.

4: Assuming HEADER = 1 option selected in SEED_3 Configuration Word.

VDD = +2.0V to 6.3V

Commercial (C): TAMB = 0 °C to +70 °C

Industrial (I): TAMB = -40 °C to +85 °C

BSEL Value

11 10 01 00

Symbol Characteristic Typical Typical Typical Typical Units

TEBasic pulse element(3) 800 400 200 100 µs

TBP Bit width 2222TE

TPPreamble duration 23 23 23 23 TE

THHeader duration 4 4 4 4 TE

TCData duration 138 138 138 138 TE

TGGuard time(2) 26.8 26.4 26 25.8 ms

— Total transmit time 166 96 61 43 ms

— Data Rate 625 1250 2500 5000 bps

Note 1: The timing parameters are not tested but derived from the oscillator clock.

2: Assuming GUARD = 10 option selected in CONFIG_0 Configuration Word.

3: Allow for a +/- 14% tolerance on the encoder internal oscillator after calibration.

Preamble

Header

23 TE

4 x TE

bit 0 bit 1

Data Word

Transmission

P1 P12

 2003 Microchip Technology Inc. DS80140C-page 9

HCS362

6. Module: Internal RC Oscillator

Corrections to text in Section 2.1.2 paragraph.

Change "±10%” to “±14%” and change “(once

calibrated over....3.5V - 6.3V)” to “once calibrated

over a voltage range of 2V - 6.3V.” The oscillator

frequency varies ± 10% (once calibrated over a

voltage range of 2.2V - 3.5V).

Corrections to Figure 2-3: HCS362 Normalized TE

vs. Temperature. Replace Figure 2-3 with the

figure below.

FIGURE 2-3: HCS362 TE VS. TEMPERATURE

HCS362 Tuned Oscillator Frequency vs. Temperature

355

360

365

370

375

380

385

390

395

400

405

410

415

420

425

430

435

440

8525

-40

Temperature (°C)

TE (µs)

2.0V

2.2V

2.5V

3.5V

5.5V

6.3V

HCS362

DS80140C-page 10  2003 Microchip Technology Inc.

REVISION HISTORY

Rev. A Document - 8/02

Item 1 - First revision of this document

Rev. B Document - 8/02

Item 2 - Added corrections to Figures 3-3, 3-4 & 3-5.

Item 3 - Added corrections to Figures 3-7 & 3-8.

Item 4 - Added corrections to Table 4-4.

Item 5 - Added corrections to Figures 7-2, 7-3, 7-5 &

7-6 and to Tables 7-4 & 7-5.

Rev. C Document - 2/03

Item 5 -Changed In Tables 7-4 and 7-5, +/- 10% to

+/- 14%.

Item 6 - Added corrections to Section 2.1.2, including

text change from +/- 10% to +/- 14% and new graph.

 2003 Microchip Technology Inc. DS80140C - page 11

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The Company’s quality system processes and

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Note the following details of the code protection feature on Microchip devices:

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• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the

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DS80140C-page 12  2003 Microchip Technology Inc.

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