參數(shù)資料
型號(hào): W83C45P
英文描述: Keyboard Controller
中文描述: 鍵盤控制器
文件頁(yè)數(shù): 4/15頁(yè)
文件大小: 89K
代理商: W83C45P
W83C42
- 4 -
Pin Description, continued
PIN NO.
(
40-pin DIP)
PIN NO.
(
44-pin PLCC)
I/O
NAME
FUNCTION
35
39
O
P24
Bit 4 of Port 2 (OBF O/P Interrupt)
36
40
O
P25
Bit 5 of Port 2 (I/P Buffer Empty)
37
41
O
P26
Bit 6 of Port 2 (K/B Clock O/P)
38
42
O
P27
Bit 7 of Port 2 (K/B Data O/P)
39
43
I
T1
K/B Data Input
40
44
-
V
DD
+5V Power Supply
BLOCK DIAGRAM
RECEIVE
CONTROL
HARDWIRE
CONTROL &
SELECT
LOGIC
DATA
BUFFER
REGISTER
REGISTER
STATUS
REGISTER
PORT
INTERFACE
STATUS
BUFFER
REGISTER
INPUT
BUFFER
REGISTER
T0
T1
XOUT
XIN
WR
RD
CS
A2
RESET
D0- D7
R64
SCAN
CODE
ROM
P10
P11
P12
P13
P14 (RAM Select)
P15 (Manufacture Mode)
P16 (Display)
P17 (KBNH)
P20 (RC)
P21 (Gate A20)
P22
P23
P24
P25
P26 (Keyboard Clock)
P27
(Keyboard Data)
OUTPUT
BUFFER
REGISTER
W60
R60
INPUT &
OUTPUT
PORT
INTERFACE
OUTPUT
CONTROL
TRANSMIT
TRANSMIT
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