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MPC82x52AS Datasheet(PDF) 59 Page - Megawin Technology Co., Ltd

Part # MPC82x52AS
Description  8-bit micro-controller
PDF  72 Pages
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Manufacturer  MEGAWIN [Megawin Technology Co., Ltd]
Direct Link  http://www.megawin.com.tw/megawin_EN/Index.asp
Logo MEGAWIN - Megawin Technology Co., Ltd

MPC82x52AS Datasheet(HTML) 59 Page - Megawin Technology Co., Ltd

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MEGAWIN
MPC82x52A Data Sheet
59
Reset and Boot Entrance
There could be five conditions will cause the device to be reset.
Power-Up
RST pin press
Watch Dog Timer overflows
Power supply drops (option reset)
Software invokes
On the power-up moment, the device will load the NVM bit HWBS (OR0.3) into a bit
named SWBS in SFR ISPCR (explained later), and then determine the boot entrance
according to SWBS.
If a reset is caused exclusive Power-Up, the boot entrance is determined only by SWBS
while no preloading happens from HWBS to SWBS.
The RST pin is used to reset this device. It is connected into the device to a Schmitt
Trigger buffer to get excellent noise immunity.
Any positive pulse from RST pin must be kept at least 10us plus 36 oscillation cycles, or
the device cannot be reset.



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