ST10F276E datasheet(84/235 Pages) STMICROELECTRONICS

84 / 235 page

Capture / compare (CAPCOM) units

ST10F276E

84/235

Doc ID 12303 Rev 3

Mode 3

Pin set ‘1’ on match; pin reset ‘0’ on compare time overflow; only one compare event per timer

period is generated

Double Register

Mode

Two registers operate on one pin; pin toggles on each compare match; several compare events

per timer period are possible.

Table 44.

CAPCOM timer input frequencies, resolutions and periods at 40 MHz

fCPU = 40 MHz

Timer input selection TxI

000b

001b

010b

011b

100b

101b

110b

111b

Prescaler for fCPU

128

256

512

1024

Input frequency

5 MHz

2.5 MHz 1.25 MHz

625 kHz

312.5 kHz

156.25 kHz

78.125 kHz

39.1 kHz

Resolution

200ns

400ns

0.8µs

1.6µs

3.2µs

6.4µs

12.8µs

25.6µs

Period

13.1ms

26.2ms

52.4ms

104.8 ms

209.7ms

419.4ms

838.9ms

1.678s

Table 45.

CAPCOM timer input frequencies, resolutions and periods at 64 MHz

fCPU = 64 MHz

Timer input selection TxI

000b

001b

010b

011b

100b

101b

110b

111b

Prescaler for fCPU

128

256

512

1024

Input frequency

8 MHz

4 MHz

2 MHz

1 kHz

500 kHz

250 kHz

128 kHz

64 kHz

Resolution

125ns

250ns

0.5µs

1.0µs

2.0µs

4.0µs

8.0µs

16.0µs

Period

8.2ms

16.4ms

32.8ms

65.5ms

131.1ms

262.1ms

524.3ms

1.049s

Table 43.

Compare modes (continued)

Compare modes

Function

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