參數(shù)資料
型號(hào): HD404448
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位HMCS400系列微機(jī)(4位單片微計(jì)算機(jī))
文件頁數(shù): 92/123頁
文件大?。?/td> 726K
代理商: HD404448
HD404449 Series
92
Port Mode Register A (PMRA: $004):
This register has the following functions (figure 75).
R4
2
/SI
1
pin function selection
R4
3
/SO
1
pin function selection
R5
2
/SI
2
pin function selection
R5
3
/SO
2
pin function selection
Port mode register A (PMRA: $004) is a 4-bit write-only register, and is reset to $0 by MCU reset.
Bit
Initial value
Read/Write
Bit name
3
0
W
PMRA3
2
0
W
PMRA2
0
0
W
PMRA0
1
0
W
PMRA1
Port mode register A (PMRA: $004)
PMRA2
0
1
R5
3
/SO
2
mode selection
R5
3
SO
2
PMRA3
0
1
R5
2
/SI
2
mode selection
R5
2
SI
2
PMRA0
0
1
R4
3
/SO
1
mode selection
R4
3
SO
1
PMRA1
0
1
R4
2
/SI
1
mode selection
R4
2
SI
1
Figure 75 Port Mode Register A (PMRA)
相關(guān)PDF資料
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