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HCS515-I Datasheet, PDF (22/32 Pages) Microchip Technology – KEELOQ Code Hopping Decoder | |||
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HCS515
8.1.4 WRITE TO USER EEPROM COMMAND
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C ⤠TA ⤠+70°C
Industrial (I):
-40°C ⤠TA ⤠+85°C
Symbol
Parameters
Min.
Typ.
Max.
Units
TWR Write command activation time
20
â
1000
µs
TACK EEPROM write acknowledge time
â
â
10
ms
TRESP
Microcontroller acknowledge
response time
20
â
1000
µs
TACK2
Decoder response
acknowledge time
â
â
10
µs
Note: These parameters are characterized but not tested.
8.1.5 ERASE ALL COMMAND
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C ⤠TA ⤠+70°C
Industrial (I):
-40°C ⤠TA ⤠+85°C
Symbol
Parameters
Min.
Typ.
Max.
Units
TERA Learn command activation time
20
TACK Decoder acknowledge time
20
TRESP
Microcontroller acknowledge
response time
20
TACK2 Decoder data line low
â
Note: These parameters are characterized but not tested.
â
1000
µs
â
210
ms
â
1000
µs
â
10
µs
8.1.6 ACTIVATE LEARN COMMAND IN MICRO MODE
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C ⤠TA ⤠+70 °C
Industrial (I):
-40°C ⤠TA ⤠+85°C
Symbol
Parameters
Min.
Typ.
Max.
Units
TLRN Learn command activation time
20
TACK Decoder acknowledge time
â
â
1000
µs
â
20
µs
TRESP
Microcontroller acknowledge
response time
20
â
1000
µs
TACK2 Decoder data line low
â
â
10
µs
Note: These parameters are characterized but not tested.
8.1.7 ACTIVATE LEARN COMMAND IN STAND-ALONE MODE
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C ⤠TA ⤠+70°C
Industrial (I):
-40°C ⤠TA ⤠+85°C
Symbol
Parameters
Min.
Typ.
Max.
Units
TREQ Command request time
â
â
100
ms
TLRN Learn command activation time
â
â
2
s
TERA Erase-all command activation time
â
â
6
s
Note: These parameters are characterized but not tested.
DS40183D-page 22
© 2002 Microchip Technology Inc.
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