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| ST10F271 Datasheet, PDF (57/173 Pages) STMicroelectronics – 16-bit MCU with 128 Kbyte Flash memory and 12 Kbyte RAM | |||
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ST10F271
Capture / compare (CAPCOM) units
Table 31. Compare modes
Compare
Modes
Function
Mode 0
Interrupt-only compare mode; several compare interrupts per timer period are
possible
Mode 1
Mode 2
Pin toggles on each compare match; several compare events per timer period are
possible
Interrupt-only compare mode; only one compare interrupt per timer period is
generated
Mode 3
Pin set â1â on match; pin reset â0â on compare time overflow; only one compare
event per timer period is generated
Double Register Two registers operate on one pin; pin toggles on each compare match; several
Mode
compare events per timer period are possible.
Table 32. CAPCOM timer input frequencies, resolutions and periods at 40 MHz
fCPU = 40 MHz
000b
001b
Timer Input Selection TxI
010b 011b 100b 101b
110b
111b
Pre-scaler for
fCPU
Input Frequency
8
5MHz
16
32
64
2.5MHz 1.25MHz 625 kHz
128
312.5
kHz
256
512
156.25 78.125
kHz
kHz
1024
39.1
kHz
Resolution
Period
200ns 400ns 0.8µs
13.1ms 26.2ms 52.4ms
1.6µs
104.8
ms
3.2µs 6.4µs 12.8µs 25.6µs
209.7ms 419.4ms 838.9ms 1.678s
Table 33. CAPCOM timer input frequencies, resolutions and periods at 64 MHz
fCPU = 64 MHz
000b
001b
Timer Input Selection TxI
010b 011b 100b 101b
110b
111b
Pre-scaler for
fCPU
Input Frequency
Resolution
Period
8
16
32
64
128
256
512
8MHz 4MHz 2MHz 1 kHz 500 kHz 250 kHz 128 kHz
125ns 250ns 0.5µs 1.0µs 2.0µs 4.0µs 8.0µs
8.2ms 16.4ms 32.8ms 65.5ms 131.1ms 262.1ms 524.3ms
1024
64 kHz
16.0µs
1.049s
57/173
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