PIC16F688-I/SL Microchip Technology, PIC16F688-I/SL Datasheet - Page 51

• Manufacturer Part Number: PIC16F688-I/SL
• Description: IC PIC MCU FLASH 4KX14 14SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F688-I/SL

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 12
• 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
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SCI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT14SO-1 - SOCKET TRANSITION 14SOIC 150/208AC162061 - HEADER INTRFC MPLAB ICD2 20PINAC162056 - HEADER INTERFACE ICD2 16F688
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.0
The PIC16F688 has a 16-bit timer. Figure 5-1 shows
the basic block diagram of the Timer1 module. Timer1
has the following features:
• 16-bit timer/counter (TMR1H:TMR1L)
• Readable and writable
• Internal or external clock selection
• Synchronous or asynchronous operation
• Interrupt-on-overflow from FFFFh to 0000h
• Wake-up upon overflow (Asynchronous mode)
• Optional external enable input
• Optional LP oscillator
FIGURE 6-1:
 2004 Microchip Technology Inc.
- Selectable gate source: T1G or C2 output
- Selectable gate polarity (T1GINV)
Note 1: Timer1 increments on the rising edge.
OSC1/T1CKI
(T1GSS)
INTOSC
T1OSCEN
without CLKOUT
OSC2/T1G
2: ST Buffer is low power type when using LP oscillator or high-speed type when using
TIMER1 MODULE WITH GATE
CONTROL
T1CKI.
Set Flag bit
TMR1IF on
Overflow
TIMER1 ON THE PIC16F688 BLOCK DIAGRAM
TMR1H
Oscillator
TMR1
(1)
TMR1L
(2)
Preliminary
Internal
Clock
F
OSC
/4
TMR1CS
1
0
The Timer1 Control register (T1CON), shown in
Register 6-1, is used to enable/disable Timer1 and
select the various features of the Timer1 module.
To C2 Comparator Module
TMR1 Clock
Note:
T1CKPS<1:0>
T1SYNC
Prescaler
1, 2, 4, 8
Additional information on timer modules is
available in the “PICmicro
MCU
(DS33023).
0
1
2
C2OUT
TMR1ON
TMR1GE
TMR1ON
TMR1GE
Family
Synchronized
Clock Input
T1GSS
PIC16F688
Sleep Input
Synchronize
1
0
Reference
det
DS41203B-page 49
T1GINV
®
Mid-Range
Manual”