Техническая Спецификация для Microchip Technology AC244045

© 2009 Microchip Technology Inc.

DS41341E-page 115

The Timer1 module is a 16-bit timer/counter with the
following features:

• 16-bit timer/counter register pair (TMR1H:TMR1L)

• Programmable internal or external clock source

• 3-bit prescaler

• Dedicated LP oscillator circuit

• Synchronous or asynchronous operation

• Multiple Timer1 gate (count enable) sources

• Interrupt on overflow

• Wake-up on overflow (external clock, 

Asynchronous mode only)

• Time base for the Capture/Compare function

• Special Event Trigger (with CCP)

• Selectable Gate Source Polarity

• Gate Toggle Mode

• Gate Single-pulse Mode

• Gate Value Status

• Gate Event Interrupt

Figure 12-1 is a block diagram of the Timer1 module.

TMR1H

TMR1L

T1SYNC

T1CKPS<1:0>

Prescaler

1, 2, 4, 8

0

1

Synchronized

clock input

2

Set flag bit
TMR1IF on
Overflow

TMR1

TMR1ON

Note 1: ST Buffer is high speed type when using T1CKI.

2: Timer1 register increments on rising edge.
3: Synchronize does not operate while in Sleep.

T1G

T1OSC

F

OSC

/4

Internal

Clock

T1OSO/T1CKI

T1OSI

T1OSCEN

1

0

T1CKI

TMR1CS<1:0>

Synchronize

det

Sleep input

TMR1GE

0

1

00

01

10

11

From Timer0 

From Timer2

T1GPOL

D

Q

CK

Q

0

1

T1GVAL

T1GTM

Single Pulse

Acq. Control

T1GSPM

T1GGO/DONE

T1GSS<1:0>

EN

OUT

10

11

00

01

F

OSC

Internal

Clock

Cap. Sensing

From WDT
Overflow

Match PR2

Overflow

R

D

EN

Q

Q1

RD

T1GCON

Data Bus

det

Interrupt

TMR1GIF

Set

T1CLK

F

OSC

/2

Internal

Clock

D

EN

Q

T1G_IN

TMR1ON

Oscillator