PIC32MX440F256H-80I Datasheet, PDF (383/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
TABLE 16-12: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS WITH PERIPHERAL BUS
CLOCK OF 10 MHZ (16-BIT MODE)
PWM Frequency
19.5 Hz 153 Hz 305 Hz 2.44 kHz 9.77 kHz 78.1 kHz 313 kHz
Timer Prescaler Ratio
8
1
1
1
1
1
1
Period Register Value (hex) 0xFA65 0xFF4E 0x8011 0x1001 0x03FE 0x007F
0x001E
Resolution (bits) (decimal)
16
16
15
12
10
7
5
TABLE 16-13: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS WITH PERIPHERAL BUS
CLOCK OF 30 MHZ (16-BIT MODE)
PWM Frequency
58 Hz 458 Hz 916 Hz 7.32 kHz 29.3 kHz 234 kHz 938 kHz
Timer Prescaler Ratio
8
1
1
1
1
1
1
Period Register Value (hex) 0xFC8E 0xFFDD 0x7FEE 0x1001 0x03FE 0x007F 0x001E
Resolution (bits) (decimal)
16
16
15
12
10
7
5
TABLE 16-14: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS WITH PERIPHERAL BUS
CLOCK OF 50 MHZ (16-BIT MODE)
PWM Frequency
58 Hz 458 Hz 916 Hz 7.32 kHz 29.3 kHz 234 kHz 938 kHz
Timer Prescaler Ratio
Period Register Value (hex)
Resolution (bits) (decimal)
64
0x349C
13.7
8
0x354D
13.7
1
0xD538
15.7
1
0x1AAD
12.7
1
0x06A9
10.7
1
0x00D4
7.7
1
0x0034
5.7
TABLE 16-15: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS WITH PERIPHERAL BUS
CLOCK OF 50 MHZ (16-BIT MODE)
PWM Frequency
100 Hz 200 Hz 500 Hz 1 kHz
2 kHz
5 kHz 10 kHz
Timer Prescaler Ratio
Period Register Value (hex)
Resolution (bits) (decimal)
8
0xF423
15.9
8
0x7A11
14.9
8
0x30D3
13.6
1
0xC34F
15.6
8
0x0C34
11.6
1
0x270F
13.3
1
0x1387
12.3
TABLE 16-16: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS WITH PERIPHERAL BUS
CLOCK OF 50 MHZ (16-BIT MODE)
PWM Frequency
100 Hz 200 Hz 500 Hz 1 kHz
2 kHz
5 kHz 10 kHz
Timer Prescaler Ratio
8
4
2
1
1
1
1
Period Register Value (hex) 0xF423 0xF423 0xC34F 0x0C34F 0x61A7 0x270F 0x1387
Resolution (bits) (decimal)
15.9
15.9
15.6
15.6
14.6
13.3
12.3
TABLE 16-17: EXAMPLE PWM FREQUENCIES AND RESOLUTIONS WITH PERIPHERAL BUS
CLOCK OF 50 MHZ (32-BIT MODE)
PWM
Frequency
100 Hz
200 Hz
500 Hz
1 kHz
2 kHz
5 kHz
10 kHz
Period Register
1
1
1
1
1
8
1
Value (hex)
Resolution (bits) 0x0007A11F 0x0003D08F 0x0001869F 0x0000C34F 0x000061A7 0x000004E1 0x00001387
(decimal)
Resolution (bits)
18.9
17.9
16.6
15.6
14.6
10.3
12.3
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 381