w83c43 Winbond Electronics Corp America, w83c43 Datasheet - Page 3

• Manufacturer Part Number: w83c43
• Description: Keyboard Controller
• Manufacturer: Winbond Electronics Corp America

PIN DESCRIPTION
12, 13, 14,
15, 16, 17,
18, 19
11, 26
(40-pin
DIP)
10
20
21
22
23
24
25
1
2
3
4
5
6
7
8
9
PIN NO.
1, 12, 13,
23, 29, 34
14, 15, 16,
17, 18, 19,
20, 21
(44-pin
PLCC)
10
11
22
24
25
26
27
28
2
3
4
5
6
7
8
9
I/O
I/O
I/O
I/O
O
O
I
I
I
I
-
I
-
I
I
I
-
-
-
RESET
D0 D7
NAME
GND
GND
V
V
P20
P21
P22
P23
WR
RD
NC
CS
T0
X1
X2
A2
CC
CC
K/B Clock Input
Crystal Clock I/P
Crystal Clock I/P
Chip Reset
Optional +5V Power
Supply
Chip Select
Optional Ground Power
I/O Read
Connect to Address A2
I/O Write
Reserved
Data Bus D0 D7
Ground Power Supply
Bit 0 of Port2
( RC : System Reset)
Bit 1 of Port2
( GA20 : GATE A20)
Bit 2 of Port2
(NC: User-defined I/O)
Bit 3 of Port2
(NC: User-defined I/O)
Optional +5V Power
Supply
- 3 -
AT MODE
Publication Release Date: January 1996
FUNCTION
K/B Clock Input
Crystal Clock I/P
Crystal Clock I/P
Chip Reset
Optional + 5V Power
Supply
Chip Select
Optional Ground Power
I/O Read
Connect to Address A2
I/O Write
Reserved
Data Bus D0 D7
Ground Power Supply
Bit 0 of Port2
( RC : System Reset)
Bit 1 of Port2
( GA20 : GATE A20)
Bit 2 of Port2
(MDAT: Mouse Data
Output)
Bit 3 of Port2
(MCLK: Mouse Clock
Output)
Optional + 5V Power
Supply
PS/2 MODE
W83C43
Revision A2