參數(shù)資料
型號: HD404638R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機)
中文描述: 4位單片機(4位單片微計算機)
文件頁數(shù): 56/133頁
文件大?。?/td> 803K
代理商: HD404638R
HD404639R Series
56
Bit
Initial value
Read/Write
Bit name
3
0
W
CER3
2
0
W
CER2
0
0
W
CER0
1
0
W
CER1
Compare enable register (CER: $018)
CER1
0
0
1
1
Analog input pin selection
COMP
COMP
COMP
COMP
CER3
Digital input mode:
RD /COMP –RD /COMP
operate as an R port.
Digital/Analog selection
Analog input mode:
RD /COMP –RD /COMP
operate as analog input.
0
1
CER0
0
1
0
1
CER2
0
1
Reference voltage selection
External input voltage
Internal voltage
0
1
2
3
Figure 37 Compare Enable Register (CER)
Bit
Initial value
Read/Write
Bit name
3
0
W
MIS3
2
0
W
MIS2
0
0
W
MIS0
1
0
W
MIS1
MIS2
PMOS transistor
on/off selection
for pin R4
3
/SO
1
On
Miscellaneous register (MIS: $00C)
0
1
Off
Refer to figure 18 in the
operation modes section.
t
RC
selection.
MIS3
0
1
Pull-up and
pull-down MOS
on/off selection
Off
On
MIS1
MIS0
Figure 38 Miscellaneous Register (MIS)
相關(guān)PDF資料
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HD40A4638R 4-Bit Single-Chip Microcomputer(4位單片微計算機)
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