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Part Name
Description
KBD43W13 View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
Manufacturer
KBD43W13
Keyboard and PS/2 Mouse Controller
SMSC -> Microchip
KBD43W13 Datasheet PDF : 22 Pages
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PIN NO.
(40 Pin
(44 Pin
DIP)
PLCC)
31
35
32
36
33
37
34
38
35
39
36
40
37
41
38
42
39
43
40
44
* Internal pull-up resistor
I/O
I PU*
I PU*
I PU*
I
PU*
O
O
O
O
I
-
NAME
P14
P15
P16
P17
P24
P25
P26
P27
T1
Vcc
FUNCTION
AT MODE
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
PS/2 MODE
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
5
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