C515A_9708 Datasheet, PDF (67/182 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C515A
Special Function Register TCON (Address 88H)
Reset Value : 00H
Bit No. MSB
LSB
7
6
5
4
3
2
1
0
8FH 8EH 8DH 8CH 8BH 8AH 89H 88H
88H TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 TCON
The shaded bits are not used in controlling timer/counter 0 and 1.
Bit
Function
TR0
Timer 0 run control bit
Set/cleared by software to turn timer/counter 0 ON/OFF.
TF0
Timer 0 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.
TF1
Timer 1 overflow flag
Set by hardware on timer/counter overflow.
Cleared by hardware when processor vectors to interrupt routine.
Semiconductor Group
6-16
1997-08-01