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參數(shù)資料
| 型號： | EM73492 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | 4-Bit Micro-Controller for Telecom Product(用于通訊產(chǎn)品和家用電器，工作電壓為2.2V-5.5V的4位微控制器) |
| 中文描述： | 4位微控制器的電信產(chǎn)品（用于通訊產(chǎn)品和家用電器，工作電壓為2.2伏至5.5V的4位微控制器） |
| 文件頁數(shù)： | 18/44頁 |
| 文件大小： | 231K |
| 代理商： | EM73492 |
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EM73492
4-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
* This specification are subject to be changed without notice.
7.17.1998
Priority checker: Check interrupt priority when multiple interrupts happened.
INTERRUPT FUNCTION
The procedure of interrupt operation:
1. Push PC and all flags to stack.
2. Set interrupt entry address into PC.
3. Set SF= 1.
4. Clear EI to inhibit other interrupts happened.
5. Clear the IL for which interrupt source has already be accepted.
6. To excute interrupt subroutine from the interrupt entry address.
7. CPU accept RTI, restore PC and flags from stack . Set EI to accept other interrupt requests.
PROGRAM EXAMPLE: To enable interrupt of "INT0, SIOI, TRGA"
LDIA #1100B;
EXAE; set mask register "1100B"
EICIL 111111B ; enable interrupt F.F.
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 P14.0/
WAKEUPE.
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.
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 mode
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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相關(guān)代理商/技術(shù)參數(shù) |
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| EM73866 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
| EM73880 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT |
| EM73962A | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICROCONTROLLER |
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| EM73982 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICROCONTROLLER |
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