HCS300 datasheet(18/28 Pages) MICROCHIP

18 / 28 page

HCS300

DS21137F-page 18

FIGURE 8-1:

POWER-UP AND TRANSMIT TIMING

TABLE 8-3:

POWER-UP AND TRANSMIT TIMING(2)

FIGURE 8-2:

CODE WORD FORMAT

VDD = +3.5 to 13.0V

Commercial(C): Tamb = 0°C to +70°C

Industrial(I): Tamb = -40°C to +85°C

Symbol

Parameter

Min

Max

Unit

Remarks

TBP

Time to second button press

10 + Code

Word

26 + Code

Word

(Note 1)

TTD

Transmit delay from button detect

TDB

Debounce Delay

TTO

Auto-shutoff time-out period

120

Note 1: TBP is the time in which a second button can be pressed without completion of the first code word and the

intention was to press the combination of buttons.

2: Typical values - not tested in production.

Button Press

Detect

TDB

Output

TTD

Multiple Code Word Transmission

TTO

Code

Word

Code

Word

Code

Word

Code

Word

TBP

Code

Word

PWM

Input

Button

LOGIC ‘0’

LOGIC ‘1’

Bit Period

Preamble

Header

Encrypted Portion

of Transmission

Fixed Portion of

Transmission

Guard

Time

THOP

TFIX

50% Duty Cycle

TBP

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