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參數(shù)資料
| 型號： | EM73290 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | 4-Bit Micro-Controller for General-Purpose Product(用于家用電器，消費類產(chǎn)品和玩具控制器，工作電壓4.5V-5.5V的單片4位微控制器) |
| 中文描述： | 4位微控制器一般通用產(chǎn)品（用于家用電器，消費類產(chǎn)品和玩具控制器，工作電壓4.5V時至5.5V的單片4位微控制器） |
| 文件頁數(shù)： | 18/32頁 |
| 文件大?。?/td> | 165K |
| 代理商： | EM73290 |
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* This specification are subject to be changed without notice.
7.17.1998
EM73290
4-BIT MICRO-CONTROLLER FOR GENERAL PURPOSE PRODUCT
POWER SAVING FUNCTION ( Sleep / Hold functlon )
During sleep and hold condition, CPU holds the system’s internal status with a low power consumption, for
the sleep mode, the system clock will be stoped in the sleep condition and system need a warm up time for
the stability of system clock running after wakeup . In the other way, for the hold mode, the system clock
does not stop at all and it does not need a warm-up time any way.
The sleep and hold mode is controlled by Port 16 and released by P0(0..3)/WAKEUP0-3 or WAKEUP.
Sleep and hold condition:
1. Osc stop ( sleep only ) and CPU internal status held .
2. Internal time base clear to "0".
3. CPU internal memory ,flags, register, I/O held original states.
4. Program counter hold the executed address after sleep release.
Release condition:
1. Osc start to oscillating.(sleep only).
2. Warm-up time passing ( sleep only ).
3. According PC to execute the following program.
There is one kind of sleep/hold release mode .
1. Edge release mode:
Release sleep/hold condition by the falling edge of any one of P0(0..3)/WAKEUP0..3 or by the rising
edge of WAKEUP.
Note :There are 4 independent mask options for wakeup function in EM73290. So, the wakeup function
of P0(0..3)/WAKEUP0..3 are enabled or disabled independently.
P16 3 2 1 0
initial value :0000
SWWT Set wake-up warm-up time
2 /XIN
2 /XIN
2 /XIN
Hold mode
1 1
SE Enable sleep/hold
0 Reserved
1 Enable sleep / hold rnode
0
1
Wake-up in edge release mode
Wake-up in level release mode
0 0
0 1
1 0
WM SE SWWT
WM Set wake-up release mode
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