RFHCS362F datasheet(46/54 Pages) MICROCHIP

No. de pieza	RFHCS362F

Descripción Electrónicos	KEELOQ짰 Code Hopping Encoder with UHF ASK/FSK Transmitter

PDF	54 Pages

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Fabricante Electrónico	MICROCHIP [Microchip Technology]

Página de inicio	http://www.microchip.com

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rfHCS362G/362F

DS41189B-page 46

FIGURE 10-5:

MANCHESTER FORMAT SUMMARY (MOD=1)

FIGURE 10-6:

MANCHESTER PREAMBLE/HEADER FORMAT (MOD=1)

TABLE 10-5:

CODE WORD TRANSMISSION TIMING PARAMETERS—MANCHESTER 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(3)

800

400

200

100

μs

TBP

Bit width

222

Preamble duration

Header duration

Data duration

138

Guard time(2)

26.8

26.4

25.8

—

Total transmit time

166

—

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

Guard

Preamble

Header

Encrypted

Fixed Code

1 2

START bit

STOP bit

Time

Portion

bit 0 bit 1 bit 2

LOGIC "0"

LOGIC "1"

TE TE

TBP

Preamble

Header

31 x TE

4 x TE

Bit 0

Bit 1

Data Word

Transmission

P16

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