Datasheet

 2009-2012 Microchip Technology Inc. DS70591E-page 235
dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
REGISTER 16-2: PTCON2: PWM CLOCK DIVIDER SELECT REGISTER 2
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
bit 15 bit 8
U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0
— — — — — PCLKDIV<2:0>
(1)
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15-3 Unimplemented: Read as ‘0’
bit 2-0 PCLKDIV<2:0>: PWM Input Clock Prescaler (Divider) Select bits
(1)
111 = Reserved
110 = Divide-by-64, maximum PWM timing resolution
101 = Divide-by-32, maximum PWM timing resolution
100 = Divide-by-16, maximum PWM timing resolution
011 = Divide-by-8, maximum PWM timing resolution
010 = Divide-by-4, maximum PWM timing resolution
001 = Divide-by-2, maximum PWM timing resolution
000 = Divide-by-1, maximum PWM timing resolution (power-on default)
Note 1: These bits should be changed only when PTEN = 0. Changing the clock selection during operation will
yield unpredictable results.
REGISTER 16-3: PTPER: PRIMARY MASTER TIME BASE PERIOD REGISTER
(1,2)
R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1
PTPER<15:8>
bit 15 bit 8
R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-0 R/W-0 R/W-0
PTPER<7:0>
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15-0 PTPER<15:0>: Primary Master Time Base (PMTMR) Period Value bits
Note 1: The PWM time base has a minimum value of 0x0010 and a maximum value of 0xFFF8.
2: Any period value that is less than 0x0028 must have the Least Significant 3 bits set to ‘0’, thus yielding a
period resolution at 8.32 ns (at fastest auxiliary clock rate).