2011-2012 Microchip Technology Inc.
Preliminary
DS61168D-page 155
PIC32MX1XX/2XX
13.0 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
13.1
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 13-1:
TIMER2, 3, 4, 5 BLOCK DIAGRAM (16-BIT)
Note 1: This data sheet summarizes the features
of the PIC32MX1XX/2XX 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)
of
the
“PIC32
Family
Reference Manual”, which is available
from
the
Microchip
web
site
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
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
Q
D
TGATE
1
0
Gate
TxCK
Sync
ON
TGATE
TCS
TCKPS
Prescaler
3
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.
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