W83C43 Datasheet, PDF (18/21 Pages) Winbond – KEYBOARD CONTROLLER

Application for PS/2 Mode
W83C43
RESETB
SA2
8042CS#
IORD#
IOWR#
D[0..7]
2
X1
3
X2
4
RESET
1
T0
39
T1
9
A2
6
CS
5
Vcc
8
RD
10
WR
12
D0
13
D1
14
D2
15
D3
16
D4
17
D5
18
D6
19
D7
7
GND
20
GND
Vcc
40
Vcc
25
P10
27
P11
28
P12
29
P13
30
P14
31
P15
32
P16
33
P17
34
P20
21
P21
22
P22
23
P23
24
P24/OB
35
P25
36
P26/KCLK
37
P27/KDAT
38
NC
11
NC
26
KB8042-DIP
KEYBOARD INTERRUPT
PS/2 MOUSE INTERRUPT
RAM SELECT JUMPER
MANUFACTURING MODE JUMPER
RCB
GATE20
Vcc
7406
1
2
7406
1
2
PS/2 MOUSE DATA
PS/2 MOUSE CLOCK
Vcc
1
2 7406
1
2 ⁷⁴⁰⁶
KEYBOARD CLOCK
KEYBOARD DATA
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