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HCS301-I/P 数据表(PDF) 21 Page - Microchip Technology

部件名 HCS301-I/P
功能描述  KEELOQ CODE HOPPING ENCODER
PDF  30 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

HCS301-I/P 数据表(HTML) 21 Page - Microchip Technology

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© 2001 Microchip Technology Inc.
DS21143B-page 21
HCS301
FIGURE 8-4:
CODE WORD FORMAT: PREAMBLE/HEADER PORTION
FIGURE 8-5:
CODE WORD FORMAT: DATA PORTION
TABLE 8-4:
CODE WORD TRANSMISSION TIMING REQUIREMENTS
VDD = +2.0 to 6.0V
Commercial(C):Tamb = 0 °C to +70 °C
Industrial(I):Tamb = -40 °C to +85 °C
Code Words Transmitted
All
1 out of 2
1 out of 4
Symbol
Characteristic
Number
of TE
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max. Units
TE
Basic pulse element
1
260
400
660
130
200
330
65
100
165
µs
TBP
PWM bit pulse width
3
780
1200
1980
390
600
990
195
300
495
µs
TP
Preamble duration
23
6.0
9.2
15.2
3.0
4.6
7.6
1.5
2.3
3.8
ms
TH
Header duration
10
2.6
4.0
6.6
1.3
2.0
3.3
0.7
1.0
1.7
ms
THOP
Hopping code duration
96
25.0
38.4
63.4
12.5
19.2
31.7
6.2
9.6
15.8
ms
TFIX
Fixed code duration
102
26.5
40.8
67.3
13.3
20.4
33.7
6.6
10.2
16.8
ms
TG
Guard Time
39
10.1
15.6
25.7
5.1
7.8
12.9
2.5
3.9
6.4
ms
—
Total Transmit Time
270
70.2
108.0 178.2
35.1
54.0
89.1
17.6
27.0
44.6
ms
—
PWM data rate
—
1282
833
505
2564
1667
1010
5128
3333
2020
bps
Note:
The timing parameters are not tested but derived from the oscillator clock.
50% Duty Cycle Preamble
Header
P1
P12
23 TE
10 TE
Data Bits
Bit 0
Bit 1
Bit 0
Bit 1
Header
Bit 30 Bit 31 Bit 32 Bit 33 Bit 58 Bit 59
Fixed Portion
Encrypted Portion
Guard
LSB
LSB
MSB
MSB
S3
S0
S1
S2
VLOW RPT
Time
Serial Number
Button Code
Status
Bit 60 Bit 61 Bit 62 Bit 63 Bit 64 Bit 65



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