DSPIC30F2011AT-30ESLASHPF datasheet(89/238 Pages) MICROCHIP

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Preliminary

DS70143C-page 87

dsPIC30F6011A/6012A/6013A/6014A

13.0

OUTPUT COMPARE MODULE

This section describes the output compare module and

associated operational modes. The features provided

by this module are useful in applications requiring oper-

ational modes, such as:

• Generation of Variable Width Output Pulses

• Power Factor Correction

Figure 13-1 depicts a block diagram of the output

compare module.

The key operational features of the output compare

module include:

• Timer2 and Timer3 Selection mode

• Simple Output Compare Match mode

• Dual Output Compare Match mode

• Simple PWM mode

• Output Compare During Sleep and Idle modes

• Interrupt on Output Compare/PWM Event

These Operating modes are determined by setting the

appropriate bits in the 16-bit OCxCON SFR (where

x = 1,2,3,...,N). The dsPIC DSC devices contain up to

8 compare channels (i.e., the maximum value of N is 8).

OCxRS and OCxR in Figure 13-1 represent the Dual

Compare registers. In the Dual Compare mode, the

OCxR register is used for the first compare and OCxRS

is used for the second compare.

FIGURE 13-1:

OUTPUT COMPARE MODE BLOCK DIAGRAM

Note: This data sheet summarizes features of this group

of dsPIC30F devices and is not intended to be a complete

reference source. For more information on the CPU,

peripherals, register descriptions and general device

functionality, refer to the “dsPIC30F Family Reference

Manual” (DS70046).

OCxR

Comparator

Output

Logic

OCM<2:0>

Output

OCx

Set Flag bit

OCxIF

OCxRS

Mode Select

Note:

Where ‘x’ is shown, reference is made to the registers associated with the respective output compare

channels 1 through N.

OCFA

OCTSEL

T2P2_MATCH

TMR2<15:0

TMR3<15:0>

T3P3_MATCH

From General Purpose

(for x = 1, 2, 3 or 4)

or OCFB

(for x = 5, 6, 7 or 8)

Timer Module

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