Microchip Technology DM164130-7 Data Sheet

 2010-2012 Microchip Technology Inc.

DS41414D-page 199

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
• 2-bit prescaler
• Dedicated 32 kHz oscillator circuit
• Optionally synchronized comparator out
• 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/ECCP)
• Selectable Gate Source Polarity

• Gate Toggle mode
• Gate Single-Pulse mode
• Gate Value Status
• Gate Event Interrupt

 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

T1OSI

T1OSCEN

1

0

T1CKI

TMR1CS<1:0>

Synchronize

det

Sleep input

TMR1GE

0

1

00

01

10

11

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

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

From Timer0 

Overflow

sync_C2OUT

sync_C1OUT

To Comparator Module

To LCD and Clock Switching Modules