參數(shù)資料
型號: HD404458
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計算機(jī))
中文描述: 4位HMCS400系列微機(jī)(4位單片微計算機(jī))
文件頁數(shù): 52/120頁
文件大小: 692K
代理商: HD404458
HD404459 Series
52
Pins R3
3
and R4
0
are multiplexed with peripheral pins
EVNB
and EVND, respectively. The peripheral
function modes of these pins are selected by bits 0 and 1 (PMRC0, PMRC1) of port mode register C
(PMRC: $025) (figure 35).
Bit
Initial value
Read/Write
Bit name
3
Not used
2
0
W
PMRC2
*
0
0
W
PMRC0
1
0
W
PMRC1
Port mode register C (PMRC: $025)
PMRC0
0
1
R3
3
PMRC1
0
1
R4
0
/EVND mode selection
R4
0
EVND
R3
3
/
EVNB
mode selection
EVNB
PMRC2
0
1
D
11
STOPC
D
11
/
STOPC
mode selection
Note:
*
PMRC2 is reset to 0 only by RESET input. When
STOPC
is input in stop mode,
PMRC2 is not reset but retains its value.
Figure 35 Port Mode Register C (PMRC)
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