PIC12F1822 MICROCHIP [Microchip Technology], PIC12F1822 Datasheet - Page 172

• Manufacturer Part Number: PIC12F1822
• Description: 8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC12F/LF1822/16F/LF1823
20.0
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,
• Time base for the Capture/Compare function
• Special Event Trigger (with CCP/ECCP)
• Selectable Gate Source Polarity
FIGURE 20-1:
DS41413A-page 172
Asynchronous mode only)
Comparator 1
SYNCC1OUT
SYNCC2OUT
Comparator 2
From Timer0
T1G
Overflow
T1GSS<1:0>
Note 1: ST Buffer is high speed type when using T1CKI.
TIMER1 MODULE WITH GATE
CONTROL
2: Timer1 register increments on rising edge.
3: Synchronize does not operate while in Sleep.
T1OSCEN
T1OSO
T1GPOL
T1CKI
T1OSI
Set flag bit
TMR1IF on
Overflow
00
10
11
TIMER1 BLOCK DIAGRAM
01
TMR1ON
T1GTM
TMR1H
T1OSC
EN
OUT
TMR1
(1)
T1G_IN
(2)
R
D
CK
TMR1L
Q
Q
1
0
Preliminary
TMR1CS<1:0>
Cap. Sensing
0
1
Oscillator
T1GGO/DONE
Q
Internal
Internal
F
OSC
Clock
Clock
F
OSC
EN
/4
D
• Gate Toggle Mode
• Gate Single-pulse Mode
• Gate Value Status
• Gate Event Interrupt
Figure 20-1 is a block diagram of the Timer1 module.
Single Pulse
Acq. Control
T1CLK
11
10
01
00
T1GSPM
T1CKPS<1:0>
T1SYNC
Prescaler
1, 2, 4, 8
TMR1ON
0
1
To Clock Switching Modules
2
0
1
Internal
F
Clock
OSC
T1GVAL
TMR1GE
/2
Q1
 2010 Microchip Technology Inc.
Synchronized
Synchronize
Interrupt
clock input
D
EN
det
det
Sleep input
Q
(3)
To Comparator Module
Set
TMR1GIF
T1GCON
Data Bus
RD