com81c17 Standard Microsystems Corp., com81c17 Datasheet - Page 3

• Manufacturer Part Number: com81c17
• Description: Twenty Pin Uart Tpuart Corporation
• Manufacturer: Standard Microsystems Corp.

nCP
INTERRUPT
REQUEST
ADDRESS
nCS
Vcc
DATA BUS
D
D
nWRITE
BUS
nREAD
2
0
1
Package: 20 Pin PLCC
19
20
2
3
1
18 17 16 15 14
4
5
5.0688 MHZ
OSCILLATOR
TTL CLOCK
6
FIGURE 1 – TYPICAL TPUART INTERFACE
FIGURE 1 – TYPICAL TPUART INTERFACE
OR
7
DECODE
13
12
11
10
8
9
PIN CONFIGURATION
CLOCK
D
D
GND
D
7
6
5
D0-D7
nCS
RS
nWR
nRD
nINT
3
nWR
GND
nRD
COM81C17
nCS
TWENTY
D
D
D
D
D
D
UART
PIN
0
1
2
3
4
5
Package 20 Pin DIP
10
9
1
2
3
4
5
6
7
8
nCP1
nCP2
RX
TX
11
12
20
19
18
17
16
15
14
13
Vcc
CP
TX
RX
RS
nINT
CLOCK
D
D
CP
7
6
2
1