C508_01 Datasheet, PDF (83/267 Pages) Infineon Technologies AG – 8-Bit CMOS Microcontroller

C508
On-Chip Peripheral Components
Special Function Register TCON (Address 88_H)
Special Function Register IEN0 (Address A8_H)
Reset Value: 00_H
Reset Value: 00_H
Bit No. MSB
LSB
7
6
5
4
3
2
1
0
8F_H 8E_H 8D_H 8C_H 8B_H 8A_H 89_H 88_H
88_H TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 TCON
AF_H AE_H AD_H AC_H AB_H AA_H A9_H A8_H
A8_H
EA WDT ET2 ES0 ET1 EX1 ET0 EX0 IEN0
The shaded bits are not used for controlling timer/counter 0 and 1.
Bit
Function
TF1
Timer 1 overflow flag
Set by hardware on timer/counter overflow.
Cleared by hardware when processor vectors to interrupt routine.
TR1
Timer 1 run control bit
Set/cleared by software to turn timer/counter 1 ON/OFF.
TF0
Timer 0 overflow flag
Set by hardware on timer/counter overflow.
Cleared by hardware when processor vectors to interrupt routine.
TR0
Timer 0 run control bit
Set/cleared by software to turn timer/counter 0 ON/OFF.
ET1
Timer 1 overflow interrupt enable
If ET1 = 0, the timer 1 interrupt is disabled.
ET0
Timer 0 overflow interrupt enable
If ET0 = 0, the timer 0 interrupt is disabled.
User’s Manual
6-18
2001-05