C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 118

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

Bit
CTP
CLK2
CLK1
CLK0
CT1P
CLK12
CLK11
CLK10
CT1F
Semiconductor Group
Function
Compare timer input clock selection.
Based on
timer input clock according to the following table
Compare timer 1 input clock selection.
Based on
timer 1 input clock according to the following table
Compare timer 1 overflow flag
CT1F is set when the compare timer 1 count rolls over from all ones to
the reload value. When CT1F is set, a compare timer 1 interrupt can be
generated (if enabled). CT1F is cleared by hardware when the compare
timer 1 value is no more equal its reload value.
CLK2
0
0
0
0
1
1
1
1
CLK12 CLK11 CLK10
0
0
0
0
1
1
1
1
f
f
OSC
OSC
CLK1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
these bits define the prescaler divider ratio of the compare
these bits define the prescaler divider ratio of the compare
CLK0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
6-40
On-Chip Peripheral Components
Compare Timer
Input Clock
CTP = 0
f
f
f
f
f
f
f
f
Compare Timer 1
Input Clock
CT1P = 0
f
f
f
f
f
f
f
f
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
2
4
8
16
32
64
128
2
4
8
16
32
64
128
Compare Timer
Input Clock
CTP = 1
(default after reset)
f
f
f
f
f
f
f
f
Compare Timer 1
Input Clock
CT1P = 1
f
f
f
f
f
f
f
f
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
2
4
8
16
32
64
128
256
2
4
8
16
32
64
128
256
1997-10-01
C509-L