參數(shù)資料
型號: HD4074459
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): 28/120頁
文件大?。?/td> 692K
代理商: HD4074459
HD404459 Series
28
Table 20
Operations in Low-Power Dissipation Modes
Function
Stop Mode
Watch Mode
Standby Mode
Subactive Mode
*
2
CPU
Reset
Retained
Retained
OP
RAM
Retained
Retained
Retained
OP
Timer A
Reset
OP
OP
OP
Timer B
Reset
Stopped
OP
OP
Timer C
Reset
Stopped
OP
OP
Timer D
Reset
Stopped
OP
OP
SCI
Reset
Stopped
*
3
OP
OP
Comparator
Reset
Stopped
OP
Stopped
I/O
Note:
Reset
*
1
Retained
Retained
OP
OP implies in operation
1. Output pins are at high impedance.
2. Subactive mode is an optional function to be specified on the function option list.
3. Transmission/reception is activated if a clock is input in external clock mode. However, all
interrupts stop.
Table 21
I/O Status in Low-Power Dissipation Modes
Output
Input
Standby Mode,
Watch Mode
Stop Mode
Active Mode,
Subactive Mode
D
0
–D
9
D
10
–D
11
R0–R8
R9
0
, R9
1
, R9
2
R9
3
, RA
Retained
High impedance
Input enabled
Input enabled
Retained or output of
peripheral functions
High impedance
Input enabled
Input enabled
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