w83c43 Winbond Electronics Corp America, w83c43 Datasheet - Page 4

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

Pin Description, continued
* Internal pull-up resistor
(40-pin
DIP)
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PIN NO.
(44-pin
PLCC)
30
31
32
33
35
36
37
38
39
40
41
42
43
44
I/O
I/O
PU*
I/O
PU*
I/O
I/O
PU*
PU*
PU*
PU*
O
O
O
O
I
I
I
I
I
-
NAME
P10
P11
P12
P13
P14
P15
P16
P17
P24
P25
P26
P27
Vcc
T1
Bit 0 of Port1
(User-defined I/O)
Bit 1 of Port1
(User-defined I/O)
Bit 2 of Port2
(User-defined I/O)
Bit 3 of Port1
(User-defined I/O)
Bit 4 of Port1
(RAM: RAM Jumper
Select)
Bit 5 of Port1
(JUMP: Jumper)
Bit 6 of Port1
(DISP: Display Select)
Bit 7 of Port1
(KINH: K/B Inhibit Switch)
Bit 4 of Port2
(KINT: K/B OBF O/P
Interrupt)
Bit 5 of Port2
(IEMP: I/P Buffer Empty)
Bit 6 of Port2
(KCLK: K/B Clock Output)
Bit 7 of Port2
(KDAT: K/B Data Output)
K/B Data Input
+5V Power Supply
- 4 -
AT MODE
FUNCTION
Bit 0 of Port1
(K/B Data Input)
Bit 1 of Port1
(Mouse Data Input)
Bit 2 of Port2
(User-defined I/O)
Bit 3 of Port1
(User-defined I/O)
Bit 4 of Port1
(RAM: RAM Jumper
Select)
Bit 5 of Port1
(JUMP: Jumper)
Bit 6 of Port1
(DISP: Display Select)
Bit 7 of Port1
(KINH: K/B Inhibit Switch)
Bit 4 of Port2
(KINT: K/B OBF O/P
Interrupt)
Bit 5 of Port2
(MINT: Mouse OBF O/P
Interrupt)
Bit 6 of Port2
(KCLK: K/B Clock Output)
Bit 7 of Port2
(KDAT: K/B Data Output)
Mouse Clock Input
+5V Power Supply
PS/2 MODE
W83C43