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EM78P447N
8-Bit Microcontroller with OTP ROM
14 •
Product Specification (V1.1) 03.30.2005
(This specification is subject to change without further notice)
Bit 0 (/WUE) Control bit is used to enable the wake-up function of P74 and P75.
0: Enable the wake-up function.
1: Disable the wake-up function.
The /WUE bit can be read and written.
Bits 1~2, and 7 Not used.
4.2.6 IOCF (Interrupt Mask Register)
7 6 5 4 3 2 1 0
- - - - EXIE - - TCIE
Bit 3 (EXIE) EXIF interrupt enable bit.
0: disable EXIF interrupt
1: enable EXIF interrupt
Bit 0 (TCIE) TCIF interrupt enable bit.
0: disable TCIF interrupt
1: enable TCIF interrupt
Bits 1, 2 and 4~7 Not used.
Individual interrupt is enabled by setting its associated control bit in the IOCF to "1".
Global interrupt is enabled by the ENI instruction and is disabled by the DISI instruction
(refer to Fig. 9).
IOCF Register is Both Readable and Writable.
Oscillator
Enable Disable
Reset
QD
Q
CLK
PR
CL
Clear
from S/W
Set
2
/WUE0
/WUE1
/WUE7
VCC
P60~P67
VCC
/WUE
P74~P75
/PHEN
8
Fig. 5 Sleep Mode and Wake-Up Circuits on I/O Ports Block Diagram