EM78451AP EMC [ELAN Microelectronics Corp], EM78451AP Datasheet - Page 17

• Manufacturer Part Number: EM78451AP
• Description: 8-Bit Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.2) 05.27.2004
(This specification is subject to change without further notice)
Bit 5 (WDTE) Control bit used to enable Watchdog timer.
Bit 6 (ODE) Open-drain control bit.
Bits 1~2, and 7 Not used.
4.2.7
Bit 0 (TCIE) TCIF interrupt enable bit.
Bit 1 (EXIE) EXIF interrupt enable bit.
Bit 2 (SPIIE) SPI interrupt enable bit.
7
-
IOCF (Interrupt Mask Register)
always activated by wake-up from sleep mode whether the Code Option
bit ENWDT is "0" or not. After waking up, the WDT is enabled if Code
Option ENWDT is "1". The block diagram of SLEEP2 mode and wake-up
caused by input triggered is depicted in Fig. 5. The SLPC bit can be read
and written.
The WDTE bit can be used only if ENWDT, the CODE Option bit, is "1". If
the ENWDT bit is "1", then WDT can be disabled/enabled by the WDTE
bit.
0: Disable WDT.
1: Enable WDT.
The WDTE bit is not used if ENWDT, the CODE Option bit ENWDT, is "0".
That is, if the ENWDT bit is "0", WDT is always disabled regardless of
what the WDTE bit is.
The WDTE bit can be read and written.
0: Both P76 and P77 are normally I/O pins.
1: Both P76 and P77 pins have the open-drain function inside.
The ODE bit can be read and written.
0: disable TCIF interrupt
1: enable TCIF interrupt
0: disable EXIF interrupt
1: enable EXIF interrupt
0: disable SPI interrupt
1: enable SPI interrupt
6
-
5
-
4
-
TM1IE
3
SPIIE
2
8-Bit Microcontroller
EXIE
1
EM78451
TCIE
0
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