Datasheet

PIC18F66K80 FAMILY
DS39977F-page 210  2010-2012 Microchip Technology Inc.
bit 1 RD16: 16-Bit Read/Write Mode Enable bit
1 = Enables register read/write of Timer1 in one 16-bit operation
0 = Enables register read/write of Timer1 in two 8-bit operations
bit 0
TMR1ON: Timer1 On bit
1 = Enables Timer1
0 =Stops Timer1
REGISTER 14-1: T1CON: TIMER1 CONTROL REGISTER (CONTINUED)
Note 1: The FOSC clock source should not be selected if the timer will be used with the ECCP capture/compare
features.