參數(shù)資料
型號: HD40A4639R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機)
中文描述: 4位單片機(4位單片微計算機)
文件頁數(shù): 26/133頁
文件大?。?/td> 803K
代理商: HD40A4639R
HD404639R Series
26
Table 18 Operations in Low-Power Dissipation Modes
Function
Stop Mode
Watch Mode
Standby Mode
Subactive Mode
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
Serial interface 1, 2
Reset
Stopped
*
2
OP
OP
DTMF
Reset
Reset
OP
Reset
Comparator
Reset
Stopped
Stopped
OP
I/O
Notes: OP implies in operation
1. Output pins are at high impedance.
2. Transmission/reception is activated if a clock is input in external clock mode. However, all
interrupts stop.
Reset
*
1
Retained
Retained
OP
Table 19 I/O Status in Low-Power Dissipation Modes
Output
Input
Standby mode, watch
mode
Stop mode
Active mode, subactive
mode
D
0
–D
11
D
12
–D
13
,
RD
0
–RD
3
,
RE
0
R0
0
–RC
1
Retained
High impedance
Input enabled
Input enabled
Retained or output of
peripheral functions
High impedance
Input enabled
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