DSPIC33EP64GS708 datasheet(175/484 Pages) MICROCHIP

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DS70005258C-page 175

dsPIC33EPXXXGS70X/80X FAMILY

13.0 TIMER2/3 AND TIMER4/5

The Timer2/3 and Timer4/5 modules are 32-bit timers,

which can also be configured as four independent

16-bit timers with selectable operating modes.

As 32-bit timers, Timer2/3 and Timer4/5 operate in

three modes:

• Two Independent 16-Bit Timers (e.g., Timer2 and

Timer3) with all 16-Bit Operating modes (except

Asynchronous Counter mode)

• Single 32-Bit Timer

• Single 32-Bit Synchronous Counter

They also support these features:

• Timer Gate Operation

• Selectable Prescaler Settings

• Timer Operation during Idle and Sleep modes

• Interrupt on a 32-Bit Period Register Match

• Time Base for Input Capture and Output Compare

modules (Timer2 and Timer3 only)

Individually, all four of the 16-bit timers can function as

synchronous timers or counters. They also offer the

features listed previously, except for the event trigger;

this is implemented only with Timer2/3. The operating

modes and enabled features are determined by setting

the appropriate bit(s) in the T2CON, T3CON, T4CON

and T5CON registers. T2CON and T4CON are shown

in generic form in Register 13-1. T3CON and T5CON

are shown in Register 13-2.

For 32-bit timer/counter operation, Timer2 and Timer4

are the least significant word (lsw); Timer3 and Timer5

are the most significant word (msw) of the 32-bit timers.

A block diagram for an example 32-bit timer pair

(Timer2/3 and Timer4/5) is shown in Figure 13-2.

13.1

Timer Resources

Many useful resources are provided on the main prod-

uct page of the Microchip website for the devices listed

in this data sheet. This product page contains the latest

updates and additional information.

13.1.1

KEY RESOURCES

• “Timers” (DS70362) in the “dsPIC33/PIC24

Family Reference Manual”

• Code Samples

• Application Notes

• Software Libraries

• Webinars

• All Related “dsPIC33/PIC24 Family Reference

Manual” Sections

• Development Tools

Note 1: This data sheet summarizes the features of

the dsPIC33EPXXXGS70X/80X family of

devices. It is not intended to be a

comprehensive reference source. To com-

plement the information in this data sheet,

refer to “Timers” (DS70362) in the

“dsPIC33/PIC24 Family Reference Man-

ual”, which is available from the Microchip

website (www.microchip.com).

2: Some registers and associated bits

described in this section may not be

available on all devices. Refer to

Section 4.0 “Memory Organization” in

this data sheet for device-specific register

and bit information.

Note:

For 32-bit operation, T3CON and T5CON

control bits are ignored. Only T2CON and

T4CON control bits are used for setup and

control. Timer2 and Timer4 clock and gate

inputs are utilized for the 32-bit timer

modules, but an interrupt is generated

with the Timer3 and Timer5 interrupt flags.

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