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HCS500_11 Datasheet, PDF (27/40 Pages) Microchip Technology – KEELOQ® Code Hopping Decoder encoders to implement a unidirectional | |||
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HCS500
9.1.4 ACTIVATE LEARN COMMAND IN MICRO MODE
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C â¤TA â¤+70 °C
Industrial (I):
-40°C â¤TA â¤+85°C
Symbol
Parameters
Min
Typ
Max
Units
TLRN Learn command activation time
20
TACK Decoder acknowledge time
â
TRESP
Microcontroller acknowledge
response time
20
TACK2 Decoder data line low
â
* These parameters are characterized but not tested.
â
1000
μs
â
20
μs
â
1000
μs
â
10
μs
9.1.5 ACTIVATE LEARN COMMAND IN STAND-ALONE MODE
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C â¤TA â¤+70°C
Industrial (I):
-40°C â¤TA â¤+85°C
Symbol
Parameters
Min
Typ
Max
Units
TPP1 Command request time
â
TPP2 Learn command activation time
â
TPP3 Erase-all command activation time
â
* These parameters are characterized but not tested.
â
100
ms
â
2
s
â
6
s
9.1.6 LEARN STATUS STRING
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C â¤TA â¤+70°C
Industrial (I):
-40°C ð TA â¤+85°C
Symbol
Parameters
Min
Typ
Max
Units
TDHI Command request time
â
â
500
ms
TCLA
Microcontroller command
request time
0.005
â
500
ms
TCA
Decoder request
acknowledge time
â
â
10
μs
TCLH Clock high hold time
1.2
ms
TCLL Clock low hold time
0.020
â
1.2
ms
TCLKH Clock high time
20
â
1000
μs
TCLKL Clock low time
20
â
1000
μs
FCLK Clock frequency
500
â
25000
Hz
TDS Data hold time
â
â
5
μs
* These parameters are characterized but not tested.
© 2011 Microchip Technology Inc.
DS40153D-page 27
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