HCS500-IP Microchip Technology, HCS500-IP Datasheet - Page 13

• Manufacturer Part Number: HCS500-IP
• Description: KEELOQ CODE HOPPING ENCODER
• Manufacturer: Microchip Technology

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