參數(shù)資料
型號: HD40A4639R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位單片機(jī)(4位單片微計(jì)算機(jī))
文件頁數(shù): 45/133頁
文件大?。?/td> 803K
代理商: HD40A4639R
HD404639R Series
45
Table 22 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
0
–R0
3
R1
0
–R1
3,
R2
0
–R2
3
R3
0
–R3
3,
R4
0
–R4
2
R5
0
–R5
2
R6
0
–R6
3
R7
0
–R7
3,
R8
0
–R8
3
R9
0
–R9
3,
RA
0
–RA
3
RB
0
–RB
3,
RC
0
DCD
PDR
Pull-down control
signal
Buffer control signal
Output data
MIS3
HLT
Input data
Input control signal
V
CC
D
0
–D
3
V
CC
V
CC
Pull-up control signal
Buffer control
signal
Output data
Input data
HLT
MIS3
DCR
MIS2, SM2B2
PDR
Input control signal
R4
3,
R5
3
Input pins
Input data
Input control signal
D
12
, D
RD
0
–RD
3
, RE
0
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