DSPIC30F4012 datasheet(85/238 Pages) MICROCHIP

85 / 238 page

DS70135G-page 85

dsPIC30F4011/4012

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

operational modes, such as:

• Generation of Variable Width Output Pulses

• Power Factor Correction

Figure 13-1 illustrates 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, ... N). The dsPIC30F4011/4012 devices have

4/2 compare channels, respectively.

OCxRS and OCxR in the figure 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,

descriptions

and

general device functionality, refer to the

dsPIC30F

Family

Reference

Manual

(DS70046). For more information on the

device instruction set and programming,

refer to the “16-bit MCU and DSC

Reference Manual” (DS70157).

OCxR

Comparator

Output

Logic

OCM<2:0>

Output Enable

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 Timer Module

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

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