PIC16F684 datasheet(52/192 Pages) MICROCHIP

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PIC16F684

DS41202F-page 50

FIGURE 6-2:

TIMER1 INCREMENTING EDGE

6.12

Timer1 Control Register

The Timer1 Control register (T1CON), shown in

various features of the Timer1 module.

T1CKI = 1

when TMR1

Enabled

T1CKI = 0

when TMR1

Enabled

Note 1:

Arrows indicate counter increments.

In Counter mode, a falling edge must be registered by the counter prior to the first incrementing rising edge of the clock.

T1CON: TIMER 1 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)

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

= 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:

= Timer1 is on if Timer1 gate is not active

= Timer1 is on

bit 5-4

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

= 1:8 Prescale Value

= 1:4 Prescale Value

= 1:2 Prescale Value

= 1:1 Prescale Value

bit 3

T1OSCEN: LP Oscillator Enable Control bit

If INTOSC without CLKOUT oscillator is active:

= LP oscillator is enabled for Timer1 clock

= LP oscillator is off

Else:

This bit is ignored

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