HCS200
FIGURE 8-5: DATA WORD FORMAT
Serial Number
Button Code
Status
LSB
MSB LSB
MSB S3
S0 S1 S2 VLOW RPT
Bit 0 Bit 1
Bit 30 Bit 31 Bit 32 Bit 33 Bit 58 Bit 59 Bit 60
Bit 62 Bit 63 Bit 64 Bit 65
Bit 61
Guard
Time
Fixed Code Word
Header
Hopping Code Word
TABLE 8-4:
CODE WORD TRANSMISSION TIMING REQUIREMENTS
VDD = +3.5 to 13.0V
Commercial (C): Tamb = 0°C to +70°C
Code Words Transmitted
1 out of 2
All
Industrial
(I): Tamb = -40°C to +85°C
Number
of TE
Symbol
Characteristic
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
TE
TBP
TP
Basic pulse element
PWM bit pulse width
Preamble duration
Header duration
1
3
280
840
6.4
400
1200
9.2
620
1860
14.3
6.2
140
420
3.2
200
600
4.6
310
930
7.1
µs
µs
23
10
96
102
39
270
—
ms
ms
ms
ms
ms
ms
bps
TH
2.8
4.0
1.4
2.0
3.1
THOP
TFIX
TG
Hopping code duration
Fixed code duration
Guard Time
26.9
28.6
10.9
75.6
1190
38.4
40.8
15.6
59.5
63.2
24.2
13.4
14.3
5.5
19.2
20.4
7.8
29.8
31.6
12.1
83.7
1075
—
Total Transmit Time
PWM data rate
108.0 167.4
833 538
37.8
2381
54.0
1667
—
Note:
The timing parameters are not tested but derived from the oscillator clock.
FIGURE 8-6: HCS200 TE VS.TEMP (BY CHARACTERIZATION)
1.7
1.6
1.5
TE Max.
VDD = 3.5V
1.4
1.3
1.2
TE
1.1
VDD = 5.0V
Typical
1.0
0.9
0.8
0.7
0.6
VDD ≥ 5.0V
TE Min.
-50 -40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
TEMPERATURE °C
1996 Microchip Technology Inc.
Preliminary
DS40138A-page 15
MICROCHIP [ MICROCHIP ]
