PIC18LF44J50-I/SP301 查看數據表（PDF） - Microchip Technology

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PIC18LF44J50-I/SP301

28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC18F46J50 FAMILY

13.1 Timer1 Gate Control Register

The Timer1 Gate Control register (T1GCON),

displayed in Register 13-2, is used to control the

Timer1 gate.

REGISTER 13-2: T1GCON: TIMER1 GATE CONTROL REGISTER (ACCESS F9Ah)(1)

R/W-0

TMR1GE

bit 7

R/W-0

T1GPOL

R/W-0

T1GTM

R/W-0

R/W-0

T1GSPM T1GGO/T1DONE

R-x

T1GVAL

R/W-0

T1GSS1

R/W-0

T1GSS0

bit 0

Legend:

R = Readable bit

-n = Value at POR

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1-0

TMR1GE: Timer1 Gate Enable bit

If TMR1ON = 0:

This bit is ignored.

If TMR1ON = 1:

1 = Timer1 counting is controlled by the Timer1 gate function

0 = Timer1 counts regardless of the Timer1 gate function

T1GPOL: Timer1 Gate Polarity bit

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

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

T1GTM: Timer1 Gate Toggle Mode bit

1 = Timer1 Gate Toggle mode is enabled

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

Timer1 gate flip-flop toggles on every rising edge.

T1GSPM: Timer1 Gate Single Pulse Mode bit

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

0 = Timer1 Gate Single Pulse mode is disabled

T1GGO/T1DONE: Timer1 Gate Single Pulse Acquisition Status bit

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

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

This bit is automatically cleared when T1GSPM is cleared.

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.

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

00 = Timer1 gate pin

01 = Timer0 overflow output

10 = TMR2 to match PR2 output

Note 1: Programming the T1GCON prior to T1CON is recommended.

 2011 Microchip Technology Inc.

DS39931D-page 201

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