HCS360_01 Datasheet, PDF (22/28 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder

HCS360
TABLE 8-5: 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
FAST1 = 0,
FAST0 = 0
FAST1 = 0,
FAST0 = 1
Symbol
Characteristic
Number
of TE
Min.
Typ.
Max.
Number
of Te
Min.
Typ. Max. Units
TE Basic pulse element
1
520 800 1240
1
260 400 620 µs
TP Preamble duration
32
16.6 25.6 39.7
32
8.3 12.8 19.8 ms
TH Header duration
4
2.1 3.2 5.0
4
1.0 1.6 2.5 ms
TSTART Start bit
2
1.0 1.6 2.5
2
0.5 0.8 1.2 ms
THOP Hopping code duration
64
33.3 51.2 79.4
64
16.6 25.6 39.7 ms
TFIX Fixed code duration
70
36.4 56.0 86.8
70
18.2 28.0 43.4 ms
TSTOP Stop bit
2
1.0 1.6 2.5
2
0.5 0.8 1.2 ms
TG Guard Time (LNGRD = 0) 8
4.2 6.4 9.9
16
4.2 6.4 9.9 ms
— Total transmit time
182 94.6 145.6 223.7 190 49.4 76.0 117.8 ms
— Manchester data rate
— 1923 1250 806
— 3846.2 2500 1612.9 bps
Note: The timing parameters are not tested but derived from the oscillator clock.
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
FAST1 = 1,
FAST0 = 0
FAST1 = 1.
FAST0 = 1
Symbol
Characteristic
Number
of TE
Min.
Typ.
Max.
Number
of Te
Min.
Typ.
Max. Units
TE Basic pulse element
1
260 400 620
1
130 200 310 µs
TP Preamble duration
32
8.3 12.8 19.8
32
4.2 6.4 9.9 ms
TH Header duration
4
1.0 1.6 2.5
4
0.5 0.8 1.2 ms
TSTART Start bit
2
0.5 0.8 1.2
2
0.3 0.4 0.6 ms
THOP Hopping code duration
64
16.6 25.6 39.7
64
8.3 12.8 19.8 ms
TFIX Fixed code duration
70
18.2 28.0 43.4
70
9.1 14.0 21.7 ms
TSTOP Stop bit
2
0.5 0.8 1.2
2
0.3 0.4 0.6 ms
TG Guard Time (LNGRD = 0) 16
4.2 6.4 9.9
32
4.2 6.4 9.9 ms
— Total transmit time
190 49.4 76.0 117.8 206 26.8 41.2 63.4 ms
— Manchester data rate
— 3846.2 2500.0 1612.9 — 7692.3 5000.0 3225.8 bps
Note: The timing parameters are not tested but derived from the oscillator clock.
DS40152D-page 22
 2001 Microchip Technology Inc.