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EM78P257AP датащи(PDF) 34 Page - ELAN Microelectronics Corp

номер детали EM78P257AP
подробное описание детали  8-BIT MICROCONTROLLER
PDF  91 Pages
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производитель  EMC [ELAN Microelectronics Corp]
домашняя страница  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P257AP датащи(HTML) 34 Page - ELAN Microelectronics Corp

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EM78P257
OTP ROM
This specification is subject to change without prior notice.
07.27.2004 (V1.4)
34
In a similar way, if the Comparator Status Changed Interrupt is used to wake-up the EM78P257A/B , the following
instructions must be executed before SLEP:
MOV A, @0bxx000110
; Select internal TCC clock
CONTW
CLR R1
; Clear TCC and prescaler
MOV A, @0bxxxx1110
; Select WDT prescaler
CONTW
WDTC
; Clear WDT and prescaler
MOV A, @0b0xxxxxxx
; Disable WDT
IOW RE
MOV A, @0b1111xxxx
; Enable comparator high interrupt
IOW RF
ENI (or DISI)
; Enable (or disable) global interrupt
SLEP
; Sleep
NOP
One problem user must be aware of, is that after waking up from the sleep mode, WDT will enable automatically.
The WDT operation (being enabled or disabled) should be handled appropriately by software after waking up from
the sleep mode.
Table 6 Summary of the Initialized Values for Registers
Address
Name
Reset Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit Name
C57
C76
C55
C54
C53
C52
C51
C50
Power-On
1
1
1
1
1
1
1
1
/RESET and WDT
1
1
1
1
1
1
1
1
N/A
IOC50
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
C67
C66
C65
C64
C63
C62
C61
C60
Power-On
1
1
1
1
1
1
1
1
/RESET and WDT
1
1
1
1
1
1
1
1
N/A
IOC60
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
X
X
X
X
X
X
C71
C70
Power-On
1
1
1
1
1
1
1
1
/RESET and WDT
1
1
1
1
1
1
1
1
N/A
IOC70
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
TCC2E TCC4E TCC6E TCCBE
X
X
X
X
Power-On
0
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
0
N/A
IOC80
(TCCCR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
COIE4
COIE3
COIE2
COIE1
CE4
CE3
CE2
CE1
Power-On
0
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
0
N/A
IOC90
(CMPCR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
X
X
X
X
CI3
CI2
CI1
CI0
Power-On
1
1
1
1
0
0
0
0
N/A
IOCA0
(COICS)
/RESET and WDT
1
1
1
1
0
0
0
0



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