PIC24F16KL402 Datasheet, PDF (117/260 Pages) Microchip Technology – Low-Power, Low-Cost, General Purpose 16-Bit Flash Microcontrollers with nanoWatt XLP Technology

PIC24F16KL402 FAMILY
13.0 TIMER2 MODULE
Note:
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive refer-
ence source. For more information on
Timers, refer to the “PIC24F Family Refer-
ence Manual”, Section 14. “Timers”
(DS39704).
The Timer2 module incorporates the following features:
• 8-bit Timer and Period registers (TMR2 and PR2,
respectively)
• Readable and writable (both registers)
• Software programmable prescaler (1:1, 1:4 and
1:16)
• Software programmable postscaler (1:1 through
1:16)
• Interrupt on TMR2 to PR2 match
• Optional Timer3 gate on TMR2 to PR2 match
• Optional use as the shift clock for the MSSP
modules
FIGURE 13-1:
TIMER2 BLOCK DIAGRAM
This module is controlled through the T2CON register
(Register 13-1), which enables or disables the timer
and configures the prescaler and postscaler. Timer2
can be shut off by clearing control bit, TMR2ON
(T2CON<2>), to minimize power consumption.
The prescaler and postscaler counters are cleared
when any of the following occurs:
• A write to the TMR2 register
• A write to the T2CON register
• Any device Reset (POR, BOR, MCLR, or
WDT Reset)
TMR2 is not cleared when T2CON is written.
A simplified block diagram of the module is shown in
Figure 13-1.
T2OUTPS<3:0>
T2CKPS<1:0>
FOSC/2
4
2
1:1, 1:4, 1:16
Prescaler
Internal Data Bus
Reset
TMR2
8
1:1 to 1:16
Postscaler
TMR2/PR2
Match
Comparator
8
Set T2IF
TMR2 Output
(to PWM or MSSPx)
PR2
8
 2011 Microchip Technology Inc.
DS31037B-page 117