ATMEGA328P-15AZ【PDF 22/83 页】MCU AVR 32K FLASH 15MHZ 32-TQFP

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Sheet目录1905

18页 19页 20页 21页 [22页]23页 24页 25页 26页

PIC12(L)F1822/PIC16(L)F1823

DS41413C-page 188

2010-2012 Microchip Technology Inc.

21.12 Timer1 Gate Control Register

The Timer1 Gate Control register (T1GCON), shown in

REGISTER 21-2:

T1GCON: TIMER1 GATE CONTROL REGISTER

R/W-0/u

R/W/HC-0/u

R-x/x

R/W-0/u

TMR1GE

T1GPOL

T1GTM

T1GSPM

T1GGO/

DONE

T1GVAL

T1GSS<1:0>

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

HC = Bit is cleared by hardware

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

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

= Comparator 1 optionally synchronized output (SYNCC1OUT)

= Comparator 2 optionally synchronized output (SYNCC2OUT)

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