PIC16F684 datasheet(53/192 Pages) MICROCHIP

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DS41202F-page 51

PIC16F684

TABLE 6-1:

SUMMARY OF REGISTERS ASSOCIATED WITH TIMER1

bit 2

T1SYNC: Timer1 External Clock Input Synchronization Control bit

TMR1CS = 1:

= Do not synchronize external clock input

= Synchronize external clock input

TMR1CS = 0:

This bit is ignored. Timer1 uses the internal clock

bit 1

TMR1CS: Timer1 Clock Source Select bit

= External clock from T1CKI pin (on the rising edge)

= Internal clock (FOSC/4)

bit 0

TMR1ON: Timer1 On bit

= Enables Timer1

= Stops Timer1

Note 1:

T1GINV bit inverts the Timer1 gate logic, regardless of source.

TMR1GE bit must be set to use either T1G pin or C2OUT, as selected by the T1GSS bit of the CMCON1

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

CMCON1

—

T1GSS

C2SYNC

---- --10

INTCON

GIE

PEIE

T0IE

INTE

RAIE

T0IF

INTF

RAIF

0000 0000

PIE1

EEIE

ADIE

CCP1IE

C2IE

C1IE

OSFIE

TMR2IE

TMR1IE

0000 0000

PIR1

EEIF

ADIF

CCP1IF

C2IF

C1IF

OSFIF

TMR2IF

TMR1IF

0000 0000

TMR1H

Holding Register for the Most Significant Byte of the 16-bit TMR1 Register

xxxx xxxx

uuuu uuuu

TMR1L

Holding Register for the Least Significant Byte of the 16-bit TMR1 Register

xxxx xxxx

uuuu uuuu

T1CON

T1GINV

TMR1GE

T1CKPS1

T1CKPS0

T1OSCEN

T1SYNC

TMR1CS

TMR1ON

0000 0000

uuuu uuuu

Legend:

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

T1CON: TIMER 1 CONTROL REGISTER (CONTINUED)

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