C509-L_97 Datasheet, PDF (120/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C509-L
6.3.2.2 Operating Modes of the Compare Timers
The compare timers receive its input clock from a programmable prescaler which provides nine
input frequencies, ranging from f_OSC up to f_OSC/256. This configuration allows a very high flexibility
concerning timer period length and input clock frequency. The prescaler ratios are selected each
by four bits in the special function registers CTCON and CT1CON. Figure 6-20 shows the block
diagram of the compare timer and compare timer 1.
Figure 6-20
Compare Timer and Compare Timer 1 Block Diagram
Semiconductor Group
6-42
1997-10-01