PIC12F508-I/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC12F508-I/SL

8/14-Pin, 8-Bit Flash Microcontrollers

Microchip Technology 

PIC12F508/509/16F505

TABLE 3-2: PIC12F508/509 PINOUT DESCRIPTION

Name

Function

Input

Type

Output

Type

Description

GP0/ICSPDAT

GP1/ICSPCLK

GP2/T0CKI

GP0

TTL

ICSPDAT ST

GP1

TTL

ICSPCLK ST

GP2

TTL

T0CKI ST

CMOS Bidirectional I/O pin. Can be software programmed for internal

weak pull-up and wake-up from Sleep on pin change.

CMOS In-Circuit Serial Programming™ data pin.

CMOS Bidirectional I/O pin. Can be software programmed for internal

weak pull-up and wake-up from Sleep on pin change.

CMOS In-Circuit Serial Programming clock pin.

CMOS Bidirectional I/O pin.

— Clock input to TMR0.

GP3/MCLR/VPP

GP3

TTL

— Input pin. Can be software programmed for internal weak

pull-up and wake-up from Sleep on pin change.

MCLR ST

— Master Clear (Reset). When configured as MCLR, this pin is

an active-low Reset to the device. Voltage on MCLR/VPP must

not exceed VDD during normal device operation or the device

will enter Programming mode. Weak pull-up always on if

configured as MCLR.

VPP

HV

— Programming voltage input.

GP4/OSC2

GP4

TTL CMOS Bidirectional I/O pin.

OSC2

— XTAL Oscillator crystal output. Connections to crystal or resonator in

Crystal Oscillator mode (XT and LP modes only, GPIO in other

modes).

GP5/OSC1/CLKIN

GP5

TTL CMOS Bidirectional I/O pin.

OSC1 XTAL — Oscillator crystal input.

CLKIN ST

— External clock source input.

VDD

VDD

—

P Positive supply for logic and I/O pins.

VSS

VSS

—

P Ground reference for logic and I/O pins.

Legend: I = Input, O = Output, I/O = Input/Output, P = Power, — = Not used, TTL = TTL input,

ST = Schmitt Trigger input, HV = High Voltage

© 2009 Microchip Technology Inc.

DS41236E-page 13

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