Modular Input/Output Subsystem (MIOS14)
MPC561/MPC563 Reference Manual, Rev. 1.2
17-52
Freescale Semiconductor
17.10.3.6 Pulse/Frequency Range Table
summarizes the frequency and minimum pulse width values that can be obtained respectively
with divide-by-1 and divide-by-256 MPWMSM clock prescaler options, while using a MIOS14 CLOCK
frequency of 40 MHz, and for each MCPSM clock divide ratios.
Table 17-24. PWM Pulse/Frequency Ranges (in Hz) Using /1 or /256 Option (40 MHz)
Minimum
Pulse
Width
Bits of Resolution
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
With /1 Option
50 ns/2
305
610
1220
2441
4882
9765
19.5
K
39K
78K
156K 312K 625K
1250
K
2500
K
5000
K
10000
K
75 ns/3
203
407
814
1628
3255
6510
13K
26K
52K
104K 208K 416K 833 K
1666
K
3333
K
6666K
100 ns/4
152
305
610
1220
2441
4882
9765
19.5
K
39K
78K
156K 312K 625 K
1250
K
2500
K
5000K
125 ns/5
122
244
488
976
1953
3906
7812
15.6
K
31.3
K
62.5K 125K 250K 500 K
1000
K
2000
K
4000K
150 ns/6
101
203
407
814
1628
3255
6510
13K
26K
52K
104K 208K 416 K
833K
1666
K
3333K
175 ns/7
87.2
174
348
697
1395
2790
5580
11.1
K
22.3
K
44.6K 89.3
K
178K
357K
714K
1428
K
2857K
200 ns/8
76.3
152
305
610
1220
2441
4882
9765
19.5
K
39K
78K
156
K
312 K
625K
1250
K
2500K
225 ns/9
67.8
135
271
542
1085
2170
4340
8680
17.3
K
34.7K 69.4
K
138K
277K
555K
1111
K
2222K
250 ns/10
61
122
244
488
976
1953
3906
7812
15.K 31.3K 62.5
K
125K 250 K 500 K 1000
K
2000K
275 ns/11
55.5
111
222
443
887
1775
3551
7102
14.2
K
28.4K 56.8
K
113K 227 K
454K 909 K 1818 K
300 ns/12
50.8
101
203
407
814
1628
3255
6510
13K
26K
52K
104K 208 K
416K 833 K 1666 K
325 ns/13
46.9
93.9
187
375
751
1502
3004
6009
12K
24K
48K
96.1
K
192 K
384K 769 K 1538 K
350 ns/14
43.6
87.2
174
348
697
1395
2790
5580
11.1
K
22.3
K
44.6
K
89.3
K
178 K
357K 714 K 1428K
375 ns/15
40.7
81.4
162
325
651
1302
2604
5208
10.4
K
20.8
K
41.6
K
83.3
K
166 K
333K 666 K 1333 K
400 ns/16
38.1
76.3
152
305
610
1220
2441
4882
9765 19.5K
39K
78K
156K
312K
625K
1250K
With /256 Option
12.8
µ
s/512 1.192 2.384 4.768 9.536 19.07 38.14 76.29 152.5 305.1 610.3 1220 2441
4882
9765 19.5K
39K
19.2
µ
s/768 0.794 1.589 3.178 6.357 12.71 25.43 50.86 101.7 203.4 406.9
813.
8
1627
3255
6510
13 K
26K
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...