DSPIC30F2010 datasheet(83/236 Pages) MICROCHIP

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DS70135E-page 81

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 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 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, register 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 “dsPIC30F/

33F Programmer’s 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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