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HCS500 Просмотр технического описания (PDF) - Microchip Technology
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Компоненты Описание
производитель
HCS500
KEELOQ Code Hopping Decoder
Microchip Technology
HCS500 Datasheet PDF : 24 Pages
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HCS500
FIGURE 4-9: ERASE ALL
T
ERA
CLK
µ
C DATA
LSB
MSB LSB
MSB LSB
MSB
Decoder DATA
Start Command
A
B
Command Byte
Subcommand Byte
Dummy Byte
C
D
E
FIGURE 4-10: STAND-ALONE MODE LEARN/ERASE-ALL TIMING
T
PP
1
T
PP
2
T
PP
3
T
ACK
T
RESP
T
ACK
2
Acknowledge
F
T
PP
4
CLK
DATA
A
Learn Activation
B
C
Erase-All Activation
FIGURE 4-11: TYPICAL STAND-ALONE APPLICATION CIRCUIT
V
CC
RF
Receiver
U2
XXX1234
A0
A1
A2
V
SS
V
CC
WP
SCL
SDA
8
7
6
5
24LC02B
1K
1
2
3
4
U1
V
DD
EECLK
EEDAT
MCLR
V
SS
RFIN
SCLK
SDAT
8
7
6
5
HCS500
22
µ
F
V
CC
U3
POWER SUPPLY
SUPERVISOR 4.5V
VI
G
VO
N
D
Vcc
S1
LEARN
R1
10K
R3
R2
10K
10K
D1
LED
Successful
D
E
OUTPUT
Vcc
K1
RELAY SPST
Q1
NPN
In-circuit
Programming
Probe Pads
Note:
Because each HCS500 is individually matched to its EEPROM, in-circuit programming is
strongly recommended.
©
1997 Microchip Technology Inc.
Preliminary
DS40153B-page 13
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