PIC24FV16KM204 Datasheet, PDF (141/336 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontroller with XLP Technology Data Sheet

PIC24FV16KM204 FAMILY
12.0 TIMER1
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information on timers,
refer to the “PIC24F Family Reference
Manual”, Section 14. “Timers” (DS39704).
The Timer1 module is a 16-bit timer which can serve as
the time counter for the Real-Time Clock (RTC) or
operate as a free-running, interval timer/counter. Timer1
can operate in three modes:
• 16-Bit Timer
• 16-Bit Synchronous Counter
• 16-Bit Asynchronous Counter
Timer1 also supports these features:
• Timer Gate Operation
• Selectable Prescaler Settings
• Timer Operation During CPU Idle and Sleep
modes
• Interrupt on 16-Bit Period Register Match or
Falling Edge of External Gate Signal
Figure 12-1 illustrates a block diagram of the 16-bit
Timer1 module.
To configure Timer1 for operation:
1. Set the TON bit (= 1).
2. Select the timer prescaler ratio using the
TCKPS<1:0> bits.
3. Set the Clock and Gating modes using the TCS
and TGATE bits.
4. Set or clear the TSYNC bit to configure
synchronous or asynchronous operation.
5. Load the timer period value into the PR1
register.
6. If interrupts are required, set the Timer1 Interrupt
Enable bit, T1IE. Use the Timer1 Interrupt Priority
bits, T1IP<2:0>, to set the interrupt priority.
FIGURE 12-1:
SOSCO
SOSCI
T1CK
16-BIT TIMER1 MODULE BLOCK DIAGRAM
TECS<1:0>
LPRC
SOSCEN
TGATE
Gate
Sync
FOSC/2
TON
TCKPS<1:0>
2
Prescaler
1, 8, 64, 256
TGATE
TCS
Set T1IF
Reset
QD
Q CK
TMR1
Equal
Comparator
PR1
TSYNC
Sync
 2013 Microchip Technology Inc.
Advance Information
DS33030A-page 141