PIC18F25J11-I/PT MICROCHIP [Microchip Technology], PIC18F25J11-I/PT Datasheet - Page 208

• Manufacturer Part Number: PIC18F25J11-I/PT
• Description: 28/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F46J11 FAMILY
13.2
Timer2 can also generate an optional device interrupt.
The Timer2 output signal (TMR2 to PR2 match) pro-
vides the input for the 4-bit output counter/postscaler.
This counter generates the TMR2 Match Interrupt Flag,
which is latched in TMR2IF (PIR1<1>). The interrupt is
enabled by setting the TMR2 Match Interrupt Enable
bit, TMR2IE (PIE1<1>).
A range of 16 postscaler options (from 1:1 through 1:16
inclusive) can be selected with the postscaler control
bits, T2OUTPS<3:0> (T2CON<6:3>).
FIGURE 13-1:
TABLE 13-1:
DS39932C-page 208
INTCON GIE/GIEH PEIE/GIEL
PIR1
PIE1
IPR1
TMR2
T2CON
PR2
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the Timer2 module.
Note 1:
Name
T2OUTPS<3:0>
T2CKPS<1:0>
F
OSC
/4
Timer2 Interrupt
Timer2 Register
Timer2 Period Register
These bits are only available in 44-pin devices.
PMPIE
PMPIP
PMPIF
Bit 7
—
REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER
(1)
(1)
(1)
T2OUTPS3 T2OUTPS2 T2OUTPS1 T2OUTPS0 TMR2ON T2CKPS1 T2CKPS0
TIMER2 BLOCK DIAGRAM
ADIF
ADIE
ADIP
Bit 6
Internal Data Bus
1:1, 1:4, 1:16
2
Prescaler
TMR0IE
RC1IE
RC1IP
RC1IF
Bit 5
4
TMR2
INT0IE
TX1IE
TX1IP
TX1IF
Bit 4
Reset
8
SSP1IE
SSP1IP
SSP1IF
RBIE
Bit 3
13.3
The unscaled output of TMR2 is available primarily to
the ECCP modules, where it is used as a time base for
operations in PWM mode.
Timer2 can be optionally used as the shift clock source
for the MSSP modules operating in SPI mode.
Additional information is provided in Section 18.0
“Master Synchronous Serial Port (MSSP) Module”.
Comparator
1:1 to 1:16
Postscaler
8
TMR2/PR2
Match
Timer2 Output
TMR0IF
CCP1IE
CCP1IP
CCP1IF
Bit 2
TMR2IF
TMR2IE
TMR2IP
INT0IF
© 2009 Microchip Technology Inc.
Bit 1
PR2
8
Set TMR2IF
TMR2 Output
(to PWM or MSSPx)
TMR1IE
TMR1IP
TMR1IF
Bit 0
RBIF
on Page:
Values
Reset
83
85
85
85
84
84
84