PIC32MX795F512LT-80ISLASHPF datasheet(137/256 Pages) MICROCHIP

137 / 256 page

DS61156G-page 137

PIC32MX5XX/6XX/7XX

14.0 TIMER2/3, TIMER4/5

This family of PIC32 devices features four synchronous

16-bit timers (default) that can operate as a free-

running interval timer for various timing applications

and counting external events. The following modes are

supported:

• Synchronous internal 16-bit timer

• Synchronous internal 16-bit gated timer

• Synchronous external 16-bit timer

Two 32-bit synchronous timers are available by

combining Timer2 with Timer3 and Timer4 with Timer5.

The 32-bit timers can operate in three modes:

• Synchronous internal 32-bit timer

• Synchronous internal 32-bit gated timer

• Synchronous external 32-bit timer

14.1

Additional Supported Features

• Selectable clock prescaler

• Timers operational during CPU idle

• Time base for Input Capture and Output Compare

modules (Timer2 and Timer3 only)

• ADC event trigger (Timer3 only)

• Fast bit manipulation using CLR, SET and INV

registers

FIGURE 14-1:

TIMER2/3, 4/5 BLOCK DIAGRAM (16-BIT)

Note 1:

This data sheet summarizes the features

of the PIC32MX5XX/6XX/7XX family of

devices. It is not intended to be a

comprehensive reference source. To

complement the information in this data

sheet, refer to Section 14. “Timers”

(DS61105)

the

“PIC32

Family

Reference Manual”

, which is available

from

the

Microchip

web

site

(www.microchip.com/PIC32).

Some registers and associated bits

described in this section may not be

available on all devices. Refer to

Section 4.0 “Memory Organization”

this data sheet for device-specific register

and bit information.

Note:

In this chapter, references to registers,

TxCON, TMRx and PRx, use ‘x’ to repre-

sent Timer2 through 5 in 16-bit modes. In

32-bit modes, ‘x’ represents Timer2 or 4;

‘y’ represents Timer3 or 5.

Sync

PRx

TxIF

Equal

Comparator x 16

TMRx

Reset

Event Flag

TGATE (TxCON<7>)

Gate

TxCK(2)

Sync

ON (TxCON<15>)

TGATE (TxCON<7>)

TCS (TxCON<1>)

TCKPS (TxCON<6:4>)

Prescaler

1, 2, 4, 8, 16,

32, 64, 256

x 1

1 0

0 0

PBCLK

Trigger(1)

ADC Event

Note 1: ADC event trigger is available on Timer3 only.

2: TxCK pins are not available on 64-pin devices.

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