C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 120

• Manufacturer Part Number: C509-L_97
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

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
up to
f
/256. This configuration allows a very high flexibility
OSC
OSC
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