RFHCS362F datasheet(45/54 Pages) MICROCHIP

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DS41189B-page 45

rfHCS362G/362F

FIGURE 10-3:

PWM FORMAT SUMMARY (MOD=0)

FIGURE 10-4:

PWM PREAMBLE/HEADER FORMAT (MOD=0)

TABLE 10-4:

CODE WORD TRANSMISSION TIMING PARAMETERS – PWM MODE(1,3)

VDD = +2.0V to 6.3V

Industrial

(I): TAMB = -40 °C to +85 °C

BSEL Value

Symbol

Characteristic

Typical

Units

Basic pulse element

800

400

200

100

μs

TBP

Bit width

333

Preamble duration

Header duration(4)

Data duration

207

Guard time(2)

27.2

26.4

25.8

—

Total transmit time

220

122

—

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 +/- 10% tolerance on the encoder internal oscillator after calibration.

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

LOGIC "1"

Guard

Time

31 TE

Encrypted

Portion

Fixed Code

Portion

LOGIC "0"

Preamble

3/10

Header

TBP

50% Duty Cycle Preamble

P16

31xTE

3 or 10xTE Header

Data Bits

Bit 0 Bit 1

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