Datasheet

PIC16F72

5.9 Resetting Timer1 Register Pair

(TMR1H, TMR1L)

TMR1H and TMR1L registers are not reset to 00h on a

POR, or any other RESET, except by the CCP1 special

event triggers.

T1CON register is reset to 00h on a Power-on Reset or

a Brown-out Reset, which shuts off the timer and

leaves a 1:1 prescale. In all other RESETS, the register

is unaffected.

5.10 Timer1 Prescaler

The prescaler counter is cleared on writes to the

TMR1H or TMR1L registers.

TABLE 5-2: REGISTERS ASSOCIATED WITH TIMER1 AS A TIMER/COUNTER

Address 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

0Bh,8Bh,

10Bh,18Bh

INTCON GIE PEIE

TMR0IE INTE RBIE TMR0IF INTF RBIF 0000 000x 0000 000u

0Ch PIR1

— ADIF — — SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000

8Ch PIE1

— ADIE — — SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000

0Eh TMR1L Holding register for the Least Significant Byte of the 16-bit TMR1 Register xxxx xxxx uuuu uuuu

0Fh TMR1H Holding register for the Most Significant Byte of the 16-bit TMR1 Register xxxx xxxx uuuu uuuu

10h T1CON

— — T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON --00 0000 --uu uuuu

Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the Timer1 module.