PIC16F882 datasheet(84/338 Pages) MICROCHIP

84 / 338 page

PIC16F882/883/884/886/887

DS41291G-page 84

 2006-2012 Microchip Technology Inc.

6.12

Timer1 Control Register

The Timer1 Control register (T1CON), shown in

various features of the Timer1 module.

T1CON: TIMER1 CONTROL REGISTER

R/W-0

T1GINV(1)

TMR1GE(2)

T1CKPS1

T1CKPS0

T1OSCEN

T1SYNC

TMR1CS

TMR1ON

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

T1GINV: Timer1 Gate Invert bit(1)

1 = Timer1 gate is active-high (Timer1 counts when gate is high)

0 = Timer1 gate is active-low (Timer1 counts when gate is low)

bit 6

TMR1GE: Timer1 Gate Enable bit(2)

If TMR1ON = 0:

This bit is ignored

If TMR1ON = 1:

1 = Timer1 counting is controlled by the Timer1 Gate function

0 = Timer1 is always counting

bit 5-4

T1CKPS<1:0>: Timer1 Input Clock Prescale Select bits

11 = 1:8 Prescale Value

10 = 1:4 Prescale Value

01 = 1:2 Prescale Value

00 = 1:1 Prescale Value

bit 3

T1OSCEN: LP Oscillator Enable Control bit

1 = LP oscillator is enabled for Timer1 clock

0 = LP oscillator is off

bit 2

T1SYNC: Timer1 External Clock Input Synchronization Control bit

TMR1CS = 1:

1 = Do not synchronize external clock input

0 = Synchronize external clock input

TMR1CS = 0:

This bit is ignored. Timer1 uses the internal clock

bit 1

TMR1CS: Timer1 Clock Source Select bit

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

0 = Internal clock (FOSC/4)

bit 0

TMR1ON: Timer1 On bit

1 = Enables Timer1

0 = 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 CM2CON1

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