PIC16F72SLASHML datasheet(36/136 Pages) MICROCHIP

36 / 136 page

PIC16F72

DS39597B-page 34

 2002 Microchip Technology Inc.

6.9

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.

6.10

Timer1 Prescaler

The prescaler counter is cleared on writes to the

TMR1H or TMR1L registers.

TABLE 6-2:

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:

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

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