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Interrupt enable register (IE)
NAME
ADDRESS
IE
0A8H
BIT LOCATION
FLAG
IE.0
EX0
IE.1
ET0
IE.2
EX1
IE.3
ET1
IE.4
ES
IE.5
ET2
IE.6
—
IE.7
EA
MSB
7
6
5
EA
—
ET2
Interrupt control bit for external interrupt 0.
Interrupt disabled when bit is "0".
Interrupt enabled when bit is "1".
Interrupt control bit for timer interrupt 0.
Interrupt disabled when bit is "0".
Interrupt enabled when bit is "1".
Interrupt control bit for external interrupt 1.
Interrupt disabled when bit is "0".
Interrupt enabled when bit is "1".
Interrupt control bit for timer interrupt 1.
Interrupt disabled when bit is "0".
Interrupt enabled when bit is "1".
Interrupt control bit for serial port.
Interrupt disabled when bit is "0".
Interrupt enabled when bit is "1".
Interrupt control bit for timer interrupt 2.
Interrupt disabled when bit is "0".
Interrupt enabled when bit is "1".
Reserved bit. The output data is "1" if the bit is read.
Overall interrupt control bit.
All interrupts are disabled when bit is "0".
All interrupts are controlled by IE.0 thru IE.5 when bit is "1".
MSM80C154S/83C154S
4
3
2
ES
ET1
EX1
FUNCTION
LSB
1
0
ET0
EX0
273
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