64GA106 datasheet(169/330 Pages) MICROCHIP

169 / 330 page

 2010 Microchip Technology Inc.

DS39905E-page 169

PIC24FJ256GA110 FAMILY

For 32-bit cascaded operation, these steps are also

necessary:

Set

the

OC32

bits

for

both

registers

(OCyCON2<8> and (OCxCON2<8>). Enable

the even-numbered module first to ensure the

modules will start functioning in unison.

Clear the OCTRIG bit of the even module

(OCyCON2<7>), so the module will run in

Synchronous mode.

Configure the desired output and Fault settings

for OCyCON2.

Force the output pin for OCx to the output state

by clearing the OCTRIS bit.

If Trigger mode operation is required, configure

the trigger options in OCx by using the OCTRIG

(OCxCON2<7>), TRIGSTAT (OCxCON2<6>)

and SYNCSEL (OCxCON2<4:0>) bits.

Configure the desired Compare or PWM mode

of operation (OCM<2:0>) for OCyCON1 first,

then for OCxCON1.

Depending on the output mode selected, the module

holds the OCx pin in its default state and forces a tran-

sition to the opposite state when OCxR matches the

timer. In Double Compare modes, OCx is forced back

to its default state when a match with OCxRS occurs.

The OCxIF interrupt flag is set after an OCxR match in

Single Compare modes, and after each OCxRS match

in Double Compare modes.

Single-shot pulse events only occur once, but may be

repeated by simply rewriting the value of the

OCxCON1 register. Continuous pulse events continue

indefinitely until terminated.

14.3

Pulse-Width Modulation (PWM)

Mode

In PWM mode, the enhanced output compare module

can be configured for edge-aligned or center-aligned

pulse waveform generation. All PWM operations are

double-buffered (buffer registers are internal to the

module and are not mapped into SFR space).

To set up the module for PWM operations:

Configure the OCx output for one of the

available Peripheral Pin Select pins.

Calculate the desired duty cycles and load them

into the OCxR register.

Calculate the desired period and load it into the

OCxRS register.

Select the current OCx as the synchronization

source by writing 0x1F to SYNCSEL<4:0>

(OCxCON2<4:0>)

and

clearing

OCTRIG

(OCxCON2<7>).

Select a clock source by writing to the

OCTSEL2<2:0> (OCxCON<12:10>) bits.

Enable interrupts, if required, for the timer and

output compare modules. The output compare

interrupt is required for PWM Fault pin utilization.

Select the desired PWM mode in the OCM<2:0>

(OCxCON1<2:0>) bits.

If a timer is selected as a clock source, set the

TMRy prescale value and enable the time base

by setting the TON (TxCON<15>) bit.

Note:

This peripheral contains input and output

functions that may need to be configured

by the Peripheral Pin Select. See

Section 10.4 “Peripheral Pin Select”

for

more information.

64GA106 датащи(PDF) 169 Page - Microchip Technology

64GA106 датащи(HTML) 169 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL