SAB-C509-LM SIEMENS [Siemens Semiconductor Group], SAB-C509-LM Datasheet - Page 45

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

C509-L
Compare Timer Operation
The compare timers receive its input clock from a programmable prescaler which provides input
frequencies, ranging from
f
up to
f
/256. The compare timers are, once started, free-running
OSC
OSC
16-bit timers, which on overflow are automatically reloaded by the contents of the 16-bit reload
registers. The compare timers have - as any other timer in the C509-L - their own interrupt request
flags CTF and CT1F. These flags are set when the timer count rolls over from all ones to the reload
value. Figure 20 shows the block diagram of compare timer and compare timer 1.
Figure 20
Compare Timer and Compare Timer 1 Block Diagram
Semiconductor Group
44