Rainbow Electronics AT89LP214 - Manual (Page 30)

30
3538A–MICRO–7/06
AT89LP213/214 [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.