PIC16F688-I/STG Microchip Technology, PIC16F688-I/STG Datasheet - Page 42

• 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
4.2.5.6
Figure 4-6 shows the diagram for this pin. The RA5 pin
is configurable to function as one of the following:
• a general purpose I/O
• a Timer1 clock input
• a crystal/resonator connection
• a clock input
DS41203E-page 40
RA5/T1CKI/OSC1/CLKIN
FIGURE 4-6:
Data Bus
PORTA
PORTA
WPUA
WPUA
TRISA
TRISA
IOCA
IOCA
WR
WR
WR
WR
RD
RD
RD
RD
Interrupt-on-
change
Note 1:
D
D
D
D
To Timer1 or CLKGEN
CK
CK
CK
CK
2: When using Timer1 with LP oscillator, the
Timer1 LP oscillator enabled.
Schmitt Trigger is bypassed.
Q
Q
Q
Q
Q
Q
Q
Q
BLOCK DIAGRAM OF RA5
INTOSC
© 2009 Microchip Technology Inc.
OSC2
Mode
INTOSC
RAPU
RD PORTA
Mode
Oscillator
Circuit
TMR1LPEN
Q
Q
EN
EN
D
D
V
(1)
DD
Weak
V
V
DD
Q3
SS
I/O pin
(2)