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EM78P451SWM Datasheet(PDF) 40 Page - ELAN Microelectronics Corp

Part # EM78P451SWM
Description  8-Bit Microcontroller with OTP ROM
PDF  54 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P451SWM Datasheet(HTML) 40 Page - ELAN Microelectronics Corp

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EM78P451S
8-Bit Microcontroller with OTP ROM
36
•
Product Specification (V1.0) 06.01.2004
(This specification is subject to change without further notice)
Address
Name
Reset Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
-
ODE
WTE
SLP
C
ROC
-
-
/WU
E
0x0E
IOCE
Power-On
U
0
1
1
0
U
U
1
/RESET and WDT
U
0
1
1
0
U
U
1
Wake-Up from Pin
Change
U
P
1
1
P
U
U
P
Bit Name
-
-
-
-
T1IE
SPII
E
EXIE
TCIE
0x0F
IOCF
Power-On
U
U
U
U
0
0
0
0
/RESET and WDT
U
U
U
U
0
0
0
0
Wake-Up from Pin
Change
U
U
U
U
P
P
P
P
Bit Name
-
-
-
-
-
-
-
-
0x10~0x3E
GPR
Power-On
U
U
U
U
U
U
U
U
/RESET and WDT
PPPPP
P
P
P
Wake-Up from Pin
Change
PPPPP
P
P
P
** To execute the next instruction after the ”SLPC” bit status of IOCE register being on
high-to-low transition.
X: NOTE
used. U: Unknown or don’t care. -: Not defined P: Previous value before reset.
t: Check Table 7
The Status of RST, T, and P of STATUS Register
A RESET condition is initiated by the following events:
1. A power-on condition,
2. Watchdog timer time-out.
The values of T and P, listed in Table 7 are used to check how the processor wakes up.
Table 8 shows the events that may affect the status of T and P.
Table 8 The Values of RST, T and P After RESET
Reset Type
T
P
Power on
1
1
WDT during Operating mode
0
P
WDT wake-up during SLEEP1 mode
0
0
WDT wake-up during SLEEP2 mode
0
P
Wake-Up on pin change during SLEEP2 mode
P
P
* P: Previous value before reset



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