HCS361_11 Datasheet, PDF (26/42 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder incorporates high security,

HCS361
FIGURE 9-1:
POWER-UP AND TRANSMIT TIMING
Button Press
Detect
TBP
Multiple Code Word Transmission
TTD
TDB
PWM
Output
Code
Word
1
Code
Word
2
Code
Word
3
Code
Word
4
Code
Word
n
TTO
Button
Input
Sn
TABLE 9-3: POWER-UP AND TRANSMIT TIMING REQUIREMENTS
VDD = +2.0 to 6.6V
Commercial (C): Tamb = 0° C to +70° C
Industrial
(I): Tamb = -40° C to +85° C
Parameter
Symbol
Min
Max
Unit
Remarks
Time to second button press
TBP
10 + Code 26 + Code
ms
Word Time Word Time
(Note 1)
Transmit delay from button detect
TTD
4.5
26
ms
(Note 2)
Debounce delay
TDB
4
13
ms
Auto-shutoff time-out period
TTO
15
35
s
(Note 3)
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: Transmit delay maximum value if the previous transmission was successfully transmitted.
3: The Auto-shutoff time-out period is not tested.
DS40146F-page 26
© 2011 Microchip Technology Inc.