Rainbow-electronics AT89LP214 Manual de usuario descargar pdf (Pagina 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

Bit76543210

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.

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Rainbow-electronics AT89LP214 Manual de usuario Pagina 30