PIC16F753 datasheet(57/230 Pages) MICROCHIP

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DS40001709C-page 57

PIC16F753/HV753

7.0

TIMER1 MODULE WITH GATE

CONTROL

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

following features:

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

• Selectable internal or external clock sources

• 2-bit prescaler

• 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 7-1 is a block diagram of the Timer1 module.

FIGURE 7-1:

TIMER1 BLOCK DIAGRAM

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

2: Timer1 register increments on rising edge.

3: Synchronize does not operate while in Sleep .

T1G

T0_overflow

C1OUT_sync

C2OUT_sync

T1GSS<1:0>

T1GPOL

Single Pulse

Acq. Control

T1GSPM

TMR1ON

T1GTM

TMR1GE

TMR1ON

TMR1L

TMR1H

T1_overflow

set flag bit

TMR1IF

TMR1

(2)

Fosc

Internal Clock

Fosc/4

Internal Clock

LFINTOSC

TMR1CS<1:0>

Prescaler

1,2,4,8

T1SYNC

Sleep

Input

Fosc/2

Internal

Clock

T1CKPS<1:0>

Synchronized Clock Input

det

Synchronize

(3)

(1)

T1GGO/DONE

T1CLK

T1CKI

set bit

TMR1GIF

T1GVAL

det

Interrupt

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