隆 Semiconductor
Timer control register (TCON)
MSB
7
TF1
6
TR1
5
TF0
4
TR0
3
IE1
MSM80C154S/83C154S
NAME
TCON
BIT LOCATION
TCON.0
TCON.1
ADDRESS
88H
FLAG
IT0
IE0
LSB
2
IT1
1
IE0
0
IT0
FUNCTION
External interrupt 0 signal is used in level-detect mode when this bit is "0" and in
trigger detect mode when "1".
Interrupt request flag for external interrupt 0.
The bit is reset automatically when an interrupt is serviced.
The bit can be set and reset by software when IT0 = "1".
External interrupt 1 signal is used in level detect mode when this bit is "0", and in
trigger detect mode when "1".
Interrupt request flag for external interrupt 1.
The bit is reset automatically when an interrupt is serviced.
The bit can be set and reset by software when IT1 = "1".
Counting start and stop control bit for timer/counter 0.
Timer/counter 0 starts counting when this bit is "1", and stops counitng when "0".
Interrupt request flag for timer interrupt 0.
The bit is reset automatically when an interrupt is serviced.
The bit is set to "1" when a carry signal is generated from timer/counter 0.
Counting start and stop control bit for timer/counter 1.
The timer/counter 1 starts counting when this bit is "1", and stops counting when "0".
Interrupt request flag for timer interrupt 1.
The bit is reset automatically when interrupt is serviced.
The bit is set to "1" when carry signal is generated from timer/counter 1.
TCON.2
TCON.3
IT1
IE1
TCON.4
TCON.5
TR0
TF0
TCON.6
TCON.7
TR1
TF1
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