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參數(shù)資料
| 型號(hào)： | UPD78218A |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| 中文描述： | 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存 |
| 文件頁數(shù)： | 34/66頁 |
| 文件大?。?/td> | 510K |
| 代理商： | UPD78218A |
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34
μ
PD78217A, 78218A
4.3
STANDBY
This is a function to reduce the power consumption of the chip. The following modes are available.
HALT mode : Stops the operation clock of the CPU. The average power consumption is reduced by switching
from normal mode to HALT mode and vice-versa.
STOP mode : Stops the oscillator. This stops all operation in the chip and enables minute power consumption
consisting only of leakage current.
These modes are programmable.
The macro service is started from the HALT mode.
Fig. 4-5 Standby Status Flow
Notes 1.
In case a vectored interrupt request is a low-priority level (status to disable interrupt of a low-priority
sequence under the HALT setting).
2.
In case a vectored interrupt request is a high-priority level or in case of the status to enable interrupt of
a low-priority sequence under the HALT setting.
3.
In case a macro service is a high-priority level (status to disable interrupt of a low-priority sequence under
the HALT setting).
4.
In case a macro service is a high-priority level or in case of the status to enable interrupt of a low-priority
sequence under the HALT setting.
H
R
V
R
Program
Operation
HALT
(Standby)
STOP
(Standby)
Macro
Service
STOPSet
NM nput
RESETInput
MacroServceRequest
Termnaton
1ByteTransfer
DataTransfer
Interrupt Request
at Interrupt Disable
MacroServceRequest
Termnaton
DataTransfer
Vectored Interrupt Request
N
Note3
Note4
Note 1
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