Datasheet

PIC18F2455/2550/4455/4550
DS39632E-page 136 © 2009 Microchip Technology Inc.
TABLE 12-2: REGISTERS ASSOCIATED WITH TIMER1 AS A TIMER/COUNTER
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset
Values
on page
INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 53
PIR1
SPPIF
(1)
ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 56
PIE1 SPPIE
(1)
ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 56
IPR1 SPPIP
(1)
ADIP RCIP TXIP SSPIP CCP1IP TMR2IP TMR1IP 56
TMR1L Timer1 Register Low Byte 54
TMR1H TImer1 Register High Byte 54
T1CON RD16 T1RUN T1CKPS1 T1CKPS0 T1OSCEN T1SYNC
TMR1CS TMR1ON 54
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the Timer1 module.
Note 1: These bits are unimplemented on 28-pin devices; always maintain these bits clear.