HCS360_11 Datasheet, PDF (29/40 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder outline and low cost,

HCS360
TABLE 9-5: CODE WORD TRANSMISSION TIMING PARAMETERS—MANCHESTER 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
520
800
1240
260
TP Preamble duration
31
TH Header duration
4
TSTART START bit
2
THOP Hopping code duration
64
TFIX Fixed code duration
70
TSTOP STOP bit
2
TG Guard Time (LNGRD = 0)
9
— Total transmit time
182
— Total transmit time
94.6
145.6 223.7
49.4
— Manchester data rate
1923
1250
806 3846.2
Note: The timing parameters are not tested but derived from the oscillator clock.
Typ.
400
31
4
2
64
70
2
17
190
76.0
2500
Max.
620
117.8
1612.9
Units
μs
TE
TE
TE
TE
TE
TE
TE
TE
ms
bps
TABLE 9-6: CODE WORD TRANSMISSION TIMING PARAMETERS—MANCHESTER 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
260
400
620
130
TP Preamble duration
32
TH Header duration
4
TSTART START bit
2
THOP Hopping code duration
64
TFIX Fixed code duration
70
TSTOP STOP bit
2
TG Guard Time (LNGRD = 0)
16
— Total transmit time
190
— Total transmit time
49.4
76.0 117.8 26.8
— Manchester data rate
3846.2 2500.0 1612.9 7692.3
Note: The timing parameters are not tested but derived from the oscillator clock.
Typ.
200
32
4
2
64
70
2
32
206
41.2
5000.0
Max.
310
63.4
3225.8
Units
μs
TE
TE
TE
TE
TE
TE
TE
TE
ms
bps
© 2011 Microchip Technology Inc.
DS40152F-page 29