PIC18F23K22 Datasheet, PDF (173/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

13.0 TIMER2/4/6 MODULE
There are three identical 8-bit Timer2-type modules
available. To maintain pre-existing naming conventions,
the Timers are called Timer2, Timer4 and Timer6 (also
Timer2/4/6).
Note:
The ‘x’ variable used in this section is used
to designate Timer2, Timer4, or Timer6.
For example, TxCON references T2CON,
T4CON, or T6CON. PRx references PR2,
PR4, or PR6.
The Timer2/4/6 module incorporates the following
features:
• 8-bit Timer and Period registers (TMRx and PRx,
respectively)
• Readable and writable (both registers)
• Software programmable prescaler (1:1, 1:4, 1:16)
• Software programmable postscaler (1:1 to 1:16)
• Interrupt on TMRx match with PRx, respectively
• Optional use as the shift clock for the MSSPx
modules (Timer2 only)
See Figure 13-1 for a block diagram of Timer2/4/6.
FIGURE 13-1:
TIMER2/4/6 BLOCK DIAGRAM
PIC18(L)F2X/4XK22
TMRx
Output
Sets Flag
bit TMRxIF
FOSC/4
Prescaler
1:1, 1:4, 1:16, 1:64
2
TxCKPS<1:0>
TMRx
Reset
Comparator
Postscaler
EQ ^{1:1 to 1:16}
PRx
4
TxOUTPS<3:0>
 2010 Microchip Technology Inc.
Preliminary
DS41412B-page 173