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EM78F651NAMS/NAMJ データシート(PDF) 27 Page - ELAN Microelectronics Corp

部品番号 EM78F651NAMS/NAMJ
部品情報  8-Bit Microcontroller
PDF  58 Pages
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メーカー  EMC [ELAN Microelectronics Corp]
ホームページ  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78F651NAMS/NAMJ データシート(HTML) 27 Page - ELAN Microelectronics Corp

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EM78F651N
8-Bit Microcontroller
Product Specification (V1.1) 10.20.2006
• 23
(This specification is subject to change without further notice)
[b] If WDT is enabled before SLEP, Port 6 Input Status Change wake-up and External
interrupt (/INT) must be disabled. Hence, the EM78F651N, can be awakened only
by Case 1 or 2. Refer to the section on Interrupt.
If Port 6 Input Status Change Interrupt is used to wake-up the EM78F651N, (Case [a]
above), the following instructions must be executed before SLEP:
MOV A, @xx000110b ; Select internal TCC clock
CONTW
CLR R1
; Clear TCC and prescaler
WDTC
; Clear WDT and prescaler
MOV A, @0xxx1110b ; Select WDT prescaler & disable WDT
IOW RA
MOV R6, R6
; Read Port 6
MOV A, @00000x1xb ; Enable Port 6 input change interrupt
IOW RF
ENI (or DISI)
; Enable (or disable) global interrupt
SLEP
; Sleep
NOP
One problem user should be aware of, is that after waking up from sleep mode, WDT
would be enabled automatically. The WDT operation (being enabled or disabled)
should be handled appropriately by software after waking up from sleep mode.



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