HCS500_15 Datasheet, PDF (28/42 Pages) Microchip Technology – KEELOQ® Code Hopping Decoder

HCS500
9.2.3 WRITE TO USER EEPROM COMMAND
TABLE 9-5: WRITE TO USER EEPROM COMMAND
Section 9.1 “Standard Operating Conditions”
Symbol
Parameters
Min.
Typ.
TWR
Write command activation time
20
—
TACK
EEPROM write acknowledge time
—
—
TRESP
Microcontroller acknowledge
response time
20
—
TACK2
Decoder response
acknowledge time
—
—
* These parameters are characterized but not tested.
9.2.4 ACTIVATE LEARN COMMAND IN MICRO MODE
TABLE 9-6: ACTIVATE LEARN COMMAND IN MICRO MODE
Section 9.1 “Standard Operating Conditions”
Symbol
Parameters
Min.
Typ.
TLRN
Learn command activation time
20
—
TACK
Decoder acknowledge time
—
—
TRESP
Microcontroller acknowledge
response time
20
—
TACK2
Decoder data line low
—
—
* These parameters are characterized but not tested.
9.2.5 ACTIVATE LEARN COMMAND IN STAND-ALONE MODE
TABLE 9-7: ACTIVATE LEARN COMMAND IN STAND-ALONE MODE
Section 9.1 “Standard Operating Conditions”
Symbol
Parameters
Min.
Typ.
TPP1
Command request time
—
—
TPP2
Learn command activation time
—
—
TPP3
Erase-all command activation time
—
—
* These parameters are characterized but not tested.
Max.
1000
10
1000
10
Max.
1000
20
1000
10
Max.
100
2
6
Units
s
ms
s
s
Units
s
s
s
s
Units
ms
s
s
DS40000153E-page 28
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