PIC16F1946 datasheet(207/478 Pages) MICROCHIP

207 / 478 page

 2010-2012 Microchip Technology Inc.

DS41414D-page 207

PIC16(L)F1946/47

21.11 Register Definitions: Timer1 Control

T1CON: TIMER1 CONTROL REGISTER

R/W-0/u

U-0

R/W-0/u

TMR1CS<1:0>

T1CKPS<1:0>

T1OSCEN

T1SYNC

—TMR1ON

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7-6

TMR1CS<1:0>:

Timer1 Clock Source Select bits

11 = Timer1 clock source is Capacitive Sensing Oscillator (CAPOSC)

10 = Timer1 clock source is pin or oscillator:

If T1OSCEN = 0:

External clock from T1CKI pin (on the rising edge)

If T1OSCEN = 1:

Crystal oscillator on T1OSI/T1OSO pins

01 = Timer1 clock source is system clock (FOSC)

00 = Timer1 clock source is instruction clock (FOSC/4)

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 = Dedicated Timer1 oscillator circuit enabled

0 = Dedicated Timer1 oscillator circuit disabled

bit 2

T1SYNC:

Timer1 Synchronization Control bit

1 = Do not synchronize asynchronous clock input

0 = Synchronize asynchronous clock input with system clock (FOSC)

bit 1

Unimplemented:

Read as ‘0’

bit 0

TMR1ON:

Timer1 On bit

1 = Enables Timer1

0 = Stops Timer1 and clears Timer1 gate flip-flop

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