C167CR_00 Datasheet, PDF (218/464 Pages) Infineon Technologies AG – 16-Bi t Single-Chip Microcont roller

C167CR
Derivatives
The General Purpose Timer Units
The timer input frequencies, resolution and periods which result from the selected
prescaler option are listed in Table 10-2. This table also applies to the Gated Timer
Mode of T3 and to the auxiliary timers T2 and T4 in timer and gated timer mode. Note
that some numbers may be rounded to 3 significant digits.
Table 10-2 GPT1 Timer Input Frequencies, Resolution and Periods @ 20 MHz
f_CPU = 20 MHz
000_B
Prescaler factor 8
001_B
16
Timer Input Selection T2I/T3I/T4I
010_B 011_B 100_B 101_B 110_B
32
64
128 256 512
111_B
1024
Input
Frequency
2.5 1.25 625
MHz MHz kHz
312.5 156.25 78.125 39.06 19.53
kHz kHz kHz kHz kHz
Resolution
400 ns 800 ns 1.6 µs 3.2 µs 6.4 µs 12.8 µs 25.6 µs 51.2 µs
Period
26.2 ms 52.5 ms 105 ms 210 ms 420 ms 840 ms 1.68 s 3.36 s
Table 10-3 GPT1 Timer Input Frequencies, Resolution and Periods @ 25 MHz
f_CPU = 25 MHz
000_B
Prescaler factor 8
001_B
16
Timer Input Selection T2I/T3I/T4I
010_B 011_B 100_B 101_B 110_B
32
64
128 256 512
111_B
1024
Input
Frequency
3.125 1.56 781.25 390.62 195.3 97.65 48.83 24.42
MHz MHz kHz kHz kHz kHz kHz kHz
Resolution
320 ns 640 ns 1.28 µs 2.56 µs 5.12 µs 10.2 µs 20.5 µs 41.0 µs
Period
21.0 ms 41.9 ms 83.9 ms 168 ms 336 ms 671 ms 1.34 s 2.68 s
Table 10-4 GPT1 Timer Input Frequencies, Resolution and Periods @ 33 MHz
f_CPU = 33 MHz
000_B
Prescaler factor 8
001_B
16
Timer Input Selection T2I/T3I/T4I
010_B 011_B 100_B 101_B 110_B
32
64
128 256 512
111_B
1024
Input
Frequency
4.125 2.0625 1.031 515.62 257.81 128.91 64.45 32.23
MHz MHz MHz kHz kHz kHz kHz kHz
Resolution
242 ns 485 ns 970 ns 1.94 µs 3.88 µs 7.76 µs 15.5 µs 31.0 µs
Period
15.9 ms 31.8 ms 63.6 ms 127 ms 254 ms 508 ms 1.02 s 2.03 s
User’s Manual
10-6
V3.1, 2000-03