參數(shù)資料
型號(hào): HD404654H
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer
中文描述: 4位單片機(jī)
文件頁數(shù): 37/109頁
文件大?。?/td> 430K
代理商: HD404654H
HD404654 Series
37
Table 20-1 Circuit Configurations of I/O Pins
I/O Pin Type
Circuit
Pins
Input/output
pins
V
CC
V
CC
Pull-up control signal
Buffer control
signal
Output data
Input data
HLT
MIS3
DCD, DCR
PDR
Input control signal
D
4
–D
, R0
,
R1
0
–R1
3
, R2
0
–R2
3
R3
0
–R3
3,
R4
0
–R4
2
V
CC
DCD
PDR
Pull-down control
signal
Buffer control signal
Output data
MIS3
HLT
Input control signal
Input data
D
0
–D
3
V
CC
V
CC
Pull-up control signal
Buffer control
signal
Output data
Input data
HLT
MIS3
DCR
MIS2
PDR
Input control signal
R4
3
Input pins
Input data
Input control signal
D
12
, D
RD
0
, RD
1
, RE
0
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