Rainbow Electronics AT89LP216 User Manual
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3621A–MICRO–6/06
AT89LP216 [Preliminary]
.
Table 14-1.
TCON
– Timer/Counter Control Register
TCON = 88H
Reset Value = 0000 0000B
Bit Addressable
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
Bit
7
6
5
4
3
2
1
0
Symbol
Function
TF1
Timer 1 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when the processor vectors
to interrupt routine.
TR1
Timer 1 run control bit. Set/cleared by software to turn Timer/Counter on/off.
TF0
Timer 0 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when the processor vectors
to interrupt routine.
TR0
Timer 0 run control bit. Set/cleared by software to turn Timer/Counter on/off.
IE1
Interrupt 1 edge flag. Set by hardware when external interrupt edge detected. Cleared when interrupt processed.
IT1
Interrupt 1 type control bit. Set/cleared by software to specify falling edge/low level triggered external interrupts.
IE0
Interrupt 0 edge flag. Set by hardware when external interrupt edge detected. Cleared when interrupt processed.
IT0
Interrupt 0 type control bit. Set/cleared by software to specify falling edge/low level triggered external interrupts.