HCS201 datasheet(23/36 Pages) MICROCHIP

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DS41098D-page 23

HCS201

FIGURE 9-1:

POWER-UP AND TRANSMIT TIMING

TABLE 9-3:

POWER-UP AND TRANSMIT TIMING(2)

FIGURE 9-2:

CODE WORD FORMAT

Standard Operating Conditions (unless otherwise specified):

Commercial(C): Tamb = 0°C to +70°C

Industrial(I): Tamb = -40°C to +85°C

Symbol

Parameter

Min.

Typ.

Max.

Unit

Conditions

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

START Pulse Delay

4.5

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

(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

DATA

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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