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參數(shù)資料
| 型號： | EM785842M |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | 8-BIT MICRO-CONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 36/45頁 |
| 文件大?。?/td> | 461K |
| 代理商： | EM785842M |
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EM785840/5841/5842
8-bit Micro-controller
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* This specification is subject to change without notice.
2004/11/10 V1.2
Fig 15: The relative of IRC and ERIC mode’s normal and sleep mode
VII.12 Power on Considerations
Any micro-controller is not guaranteed to start to operate properly before the power supply stabilizes at
its steady states. EM785840 power on reset voltage range is 1.6V ~ 2.0V. Under customer application, VDD must
drop to below 1.6V and remains OFF for 10uS before power can be switched on again. This way, EM785840 will
reset and work normally. The extra external reset circuit will work well if VDD can rise at very fast speed (50mS
or less). However, under most cases where critical applications are involved, extra devices are required to assist in
solving the power-up problems.
VII.13 External Power on Reset circuit
By Setting code option “P71S” to 1, /RESET pin is selected. Next figure is an external RC to produce the reset
pulse. The pulse width should be kept long enough for VDD to reach minimum operation voltage. The diode D
acts as a short circuit at the moment of power down. The capacitor C will discharged rapidly and fully.
Fig 15: External power on reset circuit 1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM785842P | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-BIT MICRO-CONTROLLER |
| EM78611 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:USB & PS/2 Keyboard Encoder |
| EM78612 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:Universal Serial Bus Microcontroller |
| EM78701 | 制造商:TE Connectivity 功能描述: |
| EM78800 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-BIT MICRO-CONTROLLER |
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