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Part Name
Description
COM81C17 View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
View to exact match
COM81C17
Twenty Pin UART (TPUART)
SMSC -> Microchip
COM81C17 Datasheet PDF : 18 Pages
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PIN CONFIGURATION
nCP
2
Vcc
D
0
D
1
nCS
18 17 16 15 14
19
13
20
12
1
11
2
10
3
9
45 678
CLOCK
D
7
D
6
GND
D
5
D
0
1
D
1
2
nCS 3
nRD 4
D
2
5
D
3
6
D
4
7
nWR
8
D
5
9
GND
10
20
Vcc
19 CP
2
18 CP
1
17 TX
16
RX
15 RS
14 nINT
13 CLOCK
12
D
7
11
D
6
Package: 20 Pin PLCC
Package 20 Pin DIP
DATA BUS
ADDRESS
BUS
nWRITE
nREAD
INTERRUPT
REQUEST
DECODE
D0-D7
nCP1
nCS
RS
nWR
nRD
nCP2
COM81C17
TWENTY
PIN
TX
UART
nINT
RX
5.
F
06
IG
88
U
M
R
H
E
Z
1 – TYPICAL TPUART INTERFACE
OSCILLATOR
OR
TTL CLOCK
FIGURE 1 – TYPICAL TPUART INTERFACE
3
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