PIC16F720-ESLASHML datasheet(105/244 Pages) MICROCHIP

105 / 244 page

 2010 Microchip Technology Inc.

DS41430A-page 105

PIC16F/LF720/721

13.11 Timer1 Gate Control Register

The Timer1 Gate Control register (T1GCON), shown in

T1GCON: TIMER1 GATE CONTROL REGISTER

R/W-0

R-x

R/W-0

TMR1GE

T1GPOL

T1GTM

T1GSPM

T1GGO/

DONE

T1GVAL

T1GSS1

T1GSS0

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

TMR1GE: Timer1 Gate Enable bit

If TMR1ON = 0:

This bit is ignored

If TMR1ON = 1:

= Timer1 counting is controlled by the Timer1 gate function

= Timer1 counts regardless of Timer1 gate function

bit 6

T1GPOL: Timer1 Gate Polarity bit

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

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

bit 5

T1GTM: Timer1 Gate Toggle mode bit

= Timer1 Gate Toggle mode is enabled.

= Timer1 Gate Toggle mode is disabled and toggle flip-flop is cleared

Timer1 gate flip-flop toggles on every rising edge.

bit 4

T1GSPM: Timer1 Gate Single Pulse mode bit

= Timer1 Gate Single-Pulse mode is enabled and is controlling Timer1 gate

= Timer1 Gate Single-Pulse mode is disabled

bit 3

T1GGO/DONE: Timer1 Gate Single-Pulse Acquisition Status bit

= Timer1 gate single-pulse acquisition is ready, waiting for an edge

= Timer1 gate single-pulse acquisition has completed or has not been started

This bit is automatically cleared when T1GSPM is cleared.

bit 2

T1GVAL: Timer1 Gate Current State bit

Indicates the current state of the Timer1 gate that could be provided to TMR1H:TMR1L.

Unaffected by Timer1 Gate Enable (TMR1GE).

bit 1-0

T1GSS<1:0>: Timer1 Gate Source Select bits

= Timer1 gate pin

= Timer0 overflow output

= TMR2 match PR2 output

= Watchdog Timer scaler overflow

Watchdog Timer oscillator is turned on if TMR1GE = 1, regardless of the state of TMR1ON

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