HCS201_11 datasheet(24/36 Pages) MICROCHIP

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HCS201

DS41098D-page 24

FIGURE 9-3:

CODE WORD FORMAT: PREAMBLE/HEADER PORTION

FIGURE 9-4:

CODE WORD FORMAT: DATA PORTION (XSER=0)

TABLE 9-4:

CODE WORD TRANSMISSION TIMING REQUIREMENTS

VDD = +3.5 to 6.0V

Commercial (C): Tamb = 0

° C to +70° C

Industrial

(I): Tamb = -40

° C to +85° C

Code Words Transmitted

All

1 out of 2

Symbol

Characteristic

Number

of TE

Min.

Typ.

Max.

Min.

Typ.

Max.

Units

Basic pulse element

360

400

440

180

200

220

μs

TBP

PWM bit pulse width

1.08

1.2

1.32

0.54

0.6

0.66

Preamble duration

8.64

9.2

10.56

4.32

4.6

5.28

Header duration

3.6

4.0

4.4

1.8

2.0

2.2

THOP

Hopping code duration

34.56

38.4

42.24

17.28

19.2

21.12

TFIX

Fixed code duration

102

36.72

40.8

44.88

18.36

20.4

22.44

Guard Time

14.04

15.6

17.16

7.02

7.8

8.58

⎯

Total Transmit Time

271

97.56

108.4

119.24

48.78

54.2

59.62

⎯

PWM data rate

⎯

925

833

757

1851

1667

1515

bps

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

50% Duty Cycle Preamble

Header

P12

23 TE

10 TE

Data Bits

Bit 0 Bit 1

Header

Bit 30 Bit 31 Bit 32 Bit 33 Bit 58 Bit 59

Fixed Portion

Encrypted Portion

Guard

LSB

MSB

MSB S3

VLOW RPT

Time

Serial Number

Button Code

Status

Bit 60 Bit 61 Bit 62 Bit 63 Bit 64 Bit 65

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