PIC18F23K22-ESLASHML datasheet(170/496 Pages) MICROCHIP

170 / 496 page

PIC18(L)F2X/4XK22

DS41412C-page 170

Preliminary

 2010 Microchip Technology Inc.

12.13 Timer1/3/5 Control Register

The Timer1/3/5 Control register (TxCON), shown in

the various features of the Timer1/3/5 module.

TXCON: TIMER1/3/5 CONTROL REGISTER

R/W-0/u

R/W-0/0

R/W-0/u

TMRxCS<1:0>

TxCKPS<1:0>

TxSOSCEN

TxSYNC

TxRD16

TMRxON

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

TMRxCS<1:0>: Timer1/3/5 Clock Source Select bits

11 = Reserved. Do not use.

10 = Timer1/3/5 clock source is pin or oscillator:

If TxSOSCEN = 0:

External clock from TxCKI pin (on the rising edge)

If TxSOSCEN = 1:

Crystal oscillator on SOSCI/SOSCO pins

01 = Timer1/3/5 clock source is system clock (FOSC)

00 = Timer1/3/5 clock source is instruction clock (FOSC/4)

bit 5-4

TxCKPS<1:0>: Timer1/3/5 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

TxSOSCEN: Secondary Oscillator Enable Control bit

1 = Dedicated Secondary oscillator circuit enabled

0 = Dedicated Secondary oscillator circuit disabled

bit 2

TxSYNC: Timer1/3/5 External Clock Input Synchronization Control bit

TMRxCS<1:0> = 1X

1 = Do not synchronize external clock input

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

TMRxCS<1:0> = 0X

This bit is ignored. Timer1/3/5 uses the internal clock when TMRxCS<1:0> = 1X.

bit 1

TxRD16: 16-Bit Read/Write Mode Enable bit

1 = Enables register read/write of Timer1/3/5 in one 16-bit operation

0 = Enables register read/write of Timer1/3/5 in two 8-bit operation

bit 0

TMRxON: Timer1/3/5 On bit

1 = Enables Timer1/3/5

0 = Stops Timer1/3/5

Clears Timer1/3/5 Gate flip-flop

PIC18F23K22-E/ML датащи(PDF) 170 Page - Microchip Technology

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