參數(shù)資料
型號: HMS81C2020AQ
廠商: Electronic Theatre Controls, Inc.
英文描述: CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
中文描述: CMOS單芯片8位微控制器與A / D轉(zhuǎn)換器
文件頁數(shù): 79/107頁
文件大小: 1482K
代理商: HMS81C2020AQ
HMS81C2012A/2020A
SEP. 2004 Ver 2.00
75
17. Power Saving Mode
For applications where power consumption is a critical
factor, device provides four kinds of power saving func-
tions, STOP mode, Sub-active mode and Wake-up Timer
mode (Stand-by mode, Watch mode). Table 17-1 shows
the status of each Power Saving Mode.
The power saving function is activated by execution of
STOP instruction and by execution of STOP instruction af-
ter setting the corresponding status (WAKEUP) of
CKCTLR. We shows the release sources from each Power
Saving Mode
Peripheral
STOP Mode
Sub-active Mode
Wake-up Timer Mode
Stand-by Mode
Watch Mode
RAM
Retain
Retain
Retain
Retain
Control Registers
Retain
Retain
Retain
Retain
I/O Ports
Retain
Retain
Retain
Retain
CPU
Stop
Operation
Stop
Stop
Timer0
Stop
Operation
Operation
Operation
Oscillation
Stop
Stop
Oscillation
Stop
Sub Oscillation
Stop
Oscillation
Stop
Oscillation
Prescaler
Stop
Operation
÷
2048 only
÷
2048 only
Entering Condition
[WAKEUP]
0
0
1
1
Table 17-1 Power Saving Mode
Release Source
STOP Mode
Sub-active
Mode
Wake-up Timer Mode
Stand-by Mode
Watch Mode
RESET
O
O
O
O
RCWDT
O
O
O
O
EXT.INT0
O
O
O
O
EXT.INT1
Timer0
X
X
O
O
Table 17-2 Release Sources from Power Saving Mode
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