HCS360_11 Datasheet, PDF (28/40 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder outline and low cost,

HCS360
TABLE 9-3: CODE WORD TRANSMISSION TIMING PARAMETERS—PWM MODE
VDD = +2.0V to 6.6V
Commercial (C):Tamb = 0° C to +70° C
Industrial (I):Tamb = -40° C to +85° C
Code Words Transmitted
BSEL1 = 0
BSEL0 = 0
BSEL1 = 0
BSEL0 = 1
Symbol
Characteristic
Min. Typ. Max. Min.
TE
Basic pulse element
260
400
620
130
TBP
PWM bit pulse width
3
TP
Preamble duration
31
TH
Header duration
10
THOP
Hopping code duration
96
TFIX
Fixed code duration
105
TG
Guard Time (LNGRD = 0)
17
—
Total transmit time
259
—
Total transmit time
67.3 103.6 160.6 35.8
—
PWM data rate
1282 833
538
2564
Note: The timing parameters are not tested but derived from the oscillator clock.
Typ.
200
3
31
10
96
105
33
275
55.0
1667
Max.
310
85.3
1075
Units
μs
TE
TE
TE
TE
TE
TE
TE
ms
bps
TABLE 9-4: CODE WORD TRANSMISSION TIMING PARAMETERS—PWM MODE
VDD = +2.0V to 6.6V
Commercial (C):Tamb = 0° C to +70° C
Industrial (I):Tamb = -40° C to +85° C
Code Words Transmitted
BSEL1 = 1,
BSEL0 = 0
BSEL1 = 1,
BSEL0 = 1
Symbol
Characteristic
Min.
Typ.
Max. Min.
TE
Basic pulse element
130
200
310
65
TBP PWM bit pulse width
3
TP Preamble duration
31
TH Header duration
10
THOP Hopping code duration
96
TFIX Fixed code duration
105
TG Guard Time (LNGRD = 0)
33
—
Total transmit time
275
—
Total transmit time
35.8
55.0
85.3
20.0
—
PWM data rate
2564 1667 1075 5128
Note: The timing parameters are not tested but derived from the oscillator clock.
Typ.
100
3
31
10
96
105
65
307
30.7
3333
Max.
155
47.6
2151
Units
μs
TE
TE
TE
TE
TE
TE
TE
ms
bps
DS40152F-page 28
© 2011 Microchip Technology Inc.