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PIC18F6X2X Datasheet(PDF) 152 Page - Microchip Technology

Part # PIC18F6X2X
Description  64/80-Pin High Performance, 64-Kbyte Enhanced FLASH Microcontrollers with A/D
PDF  386 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F6X2X Datasheet(HTML) 152 Page - Microchip Technology

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PIC18F6X2X/8X2X
DS39612A-page 150
Advance Information
 2003 Microchip Technology Inc.
15.2
Timer4 Interrupt
The Timer4 module has an 8-bit period register, PR4,
which is both readable and writable. Timer4 increments
from 00h until it matches PR4 and then resets to 00h on
the next increment cycle. The PR4 register is initialized
to FFh upon RESET.
15.3
Output of TMR4
The output of TMR4 (before the postscaler) is used
only as a PWM time base for the CCP modules. It is not
used as a baud rate clock for the MSSP, as is the
Timer2 output.
FIGURE 15-1:
TIMER4 BLOCK DIAGRAM
TABLE 15-1:
REGISTERS ASSOCIATED WITH TIMER4 AS A TIMER/COUNTER
Comparator
TMR4
Sets Flag
TMR4
Output(1)
RESET
Postscaler
Prescaler
PR4
2
FOSC/4
1:1 to 1:16
1:1, 1:4, 1:16
EQ
4
bit TMR4IF
T4OUTPS3:T4OUTPS0
T4CKPS1:T4CKPS0
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
RESETS
INTCON GIE/GIEH PEIE/GIEL
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
0000 0000 0000 0000
IPR3
—
—
RC2IP
TX2IP
TMR4IP
CCP5IP
CCP4IP
CCP3IP
--11 1111 --00 0000
PIR3
—
—
RC2IF
TX2IF
TMR4IF
CCP5IF
CCP4IF
CCP3IF
--00 0000 --00 0000
PIE3
—
—
RC2IE
TX2IE
TMR4IE
CCP5IE
CCP4IE
CCP3IE
--00 0000 --00 0000
TMR4
Timer4 Module Register
0000 0000 0000 0000
T4CON
—
T4OUTPS3 T4OUTPS2 T4OUTPS1 T4OUTPS0 TMR4ON T4CKPS1 T4CKPS0 -000 0000 -000 0000
PR4
Timer4 Period Register
1111 1111 1111 1111
Legend:
x
= unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the Timer4 module.



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