HCS361_11 Datasheet, PDF (31/42 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder incorporates high security,

HCS361
TABLE 9-6: TIMING PARAMETERS: VPWM MODE (BSEL=0)
VDD = +2.0 to 6.6V
Commercial (C): Tamb = 0° C to +70° C
Industrial
(I): Tamb = -40° C to +85° C
Code Words Transmitted
Shortest
Longest
Symbol
Characteristic
Min
Typ. Max. Min.
Typ.
TE
Basic pulse element
260
400
620
260
TP
Preamble duration
28
TS
Sync Pulse duration
10
TH
Header duration
10
THOP
Hopping code duration
32
TFIX
Fixed code duration
35
TG
Guard Time
114
⎯
Total Transmit Time
229
⎯
Total Transmit Time
59.5 91.6 141.9 76.9
⎯
VPWM data rate
3846 2500 1613 3846
Note: The timing parameters are not tested but derived from the oscillator clock.
400
28
10
10
64
70
114
296
118.4
2500
Max.
620
183.5
1613
Units
μs
TE
TE
TE
TE
TE
TE
TE
ms
bps
TABLE 9-7: TIMING PARAMETERS: VPWM MODE (BSEL=1)
VDD = +2.0 to 6.6V
Commercial (C): Tamb = 0° C to +70° C
Industrial
(I): Tamb = -40° C to +85° C
Code Words Transmitted
Shortest
Longest
Symbol
Characteristic
Min
Typ. Max. Min.
TE
Basic pulse element
130
200
310
130
TP
Preamble duration
28
TS
Sync Pulse duration
10
TH
Header duration
10
THOP
Hopping code duration
32
TFIX
Fixed code duration
35
TG
Guard Time
226
⎯
Total Transmit Time
341
⎯
Total Transmit Time
44.3
68.2 105.7 53.0
⎯
VPWM data rate
7692 5000 3226 7692
Note: The timing parameters are not tested but derived from the oscillator clock.
Typ.
200
28
10
10
64
70
226
408
81.6
5000
Max.
310
126.4
3226
Units
μs
TE
TE
TE
TE
TE
TE
TE
ms
bps
© 2011 Microchip Technology Inc.
DS40146F-page 31