PIC16F688-I/STG Microchip Technology, PIC16F688-I/STG Datasheet - Page 50

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PIC16F688-I/STG

Manufacturer Part Number
PIC16F688-I/STG
Description
IC PIC MCU FLASH 4KX14 14TSSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr

Specifications of PIC16F688-I/STG

Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
12
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
14-TSSOP
For Use With
XLT14SS-1 - SOCKET TRANSITION 14DIP/14SSOPAC162061 - HEADER INTRFC MPLAB ICD2 20PINAC162056 - HEADER INTERFACE ICD2 16F688
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
PIC16F688
6.0
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
• 3-bit prescaler
• Optional LP oscillator
• Synchronous or asynchronous operation
• Timer1 gate (count enable) via comparator or
• Interrupt on overflow
• Wake-up on overflow (external clock,
Figure 6-1 is a block diagram of the Timer1 module.
FIGURE 6-1:
DS41203E-page 48
T1G pin
Asynchronous mode only)
Without CLKOUT
OSC1/T1CKI
OSC2/T1G
CONTROL
TIMER1 MODULE WITH GATE
T1OSCEN
INTOSC
Note 1:
Set flag bit
TMR1IF on
Overflow
2:
3:
TIMER1 BLOCK DIAGRAM
ST Buffer is low power type when using LP oscillator, or high speed type when using T1CKI.
Timer1 register increments on rising edge.
Synchronize does not operate while in Sleep.
Oscillator
TMR1H
TMR1
(2)
TMR1L
EN
(1)
Internal
F
OSC
Clock
/4
6.1
The Timer1 module is a 16-bit incrementing counter
which is accessed through the TMR1H:TMR1L register
pair. Writes to TMR1H or TMR1L directly update the
counter.
When used with an internal clock source, the module is
a timer. When used with an external clock source, the
module can be used as either a timer or counter.
6.2
The TMR1CS bit of the T1CON register is used to select
the clock source. When TMR1CS = 0, the clock source
is F
supplied externally.
TMR1CS
F
T1CKI pin
Clock Source
OSC
1
0
To C2 Comparator Module
Timer1 Clock
OSC
/4
/4. When TMR1CS = 1, the clock source is
Timer1 Operation
Clock Source Selection
T1CKPS<1:0>
T1SYNC
Prescaler
1, 2, 4, 8
TMR1ON
0
1
2
C2OUT
TMR1CS
© 2009 Microchip Technology Inc.
TMR1GE
0
1
Synchronized
Synchronize
clock input
T1GSS
1
0
det
F
T1CKI pin
Clock Source
OSC
(3)
/4
T1GINV

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