PIC18F-LF1XK50 Datasheet, PDF(13/420 Page) Microchip Technology – 20-Pin USB Flash Microcontrollers

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PIC18F-LF1XK50 Datasheet, PDF (13/420 Pages) Microchip Technology – 20-Pin USB Flash Microcontrollers

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PIC18F1XK50/PIC18LF1XK50

TABLE 1-2: PIC18F/LF1XK50 PINOUT I/O DESCRIPTIONS

Pin Name

RA0/D+/PGD

RA0

D+

PGD

Pin Pin

Number Type

19

I

I/O

I/O

Buffer

Type

TTL

XCVR

ST

Description

Digital input

USB differential plus line (input/output)

ICSPâ¢ programming data pin

RA1/D-/PGC

RA1

D-

PGC

18

I

TTL

Digital input

I/O XCVR USB differential minus line (input/output)

I/O

ST

ICSPâ¢ programming clock pin

RA3/MCLR/VPP

RA3

MCLR

VPP

4

Master Clear (input) or programming voltage (input)

I

ST

Digital input

I

ST

Active-low Master Clear with internal pull-up

P

â

High voltage programming input

RA4/AN3/OSC2/CLKOUT

RA4

AN3

OSC2

CLKOUT

3

I/O TTL

Digital I/O

I Analog ADC channel 3

O XTAL

Oscillator crystal output. Connect to crystal or resonator

in Crystal Oscillator mode

O CMOS In RC mode, OSC2 pin outputs CLKOUT which

has 1/4 the frequency of OSC1 and denotes

the instruction cycle rate

RA5/OSC1/CLKIN

RA5

OSC1

CLKIN

2

I/O TTL

Digital I/O

I XTAL

Oscillator crystal input or external clock input

ST buffer when configured in RC mode; analog other

wise

I CMOS External clock source input. Always associated with the

pin function OSC1 (See related OSC1/CLKIN, OSC2,

CLKOUT pins

RB4/AN10/SDI/SDA

RB4

AN10

SDI

SDA

13

I/O TTL

Digital I/O

I Analog ADC channel 10

I

ST

I/O

ST

SPI data in

I2Câ¢ data I/O

RB5/AN11/RX/DT

RB5

AN11

RX

DT

12

I/O TLL

Digital I/O

I Analog ADC channel 11

I

ST

EUSART asynchronous receive

I/O

ST

EUSART synchronous data (see related RX/TX)

RB6/SCK/SCI

RB6

SCK

SCI

11

I/O TLL

I/O

ST

I/O

ST

Digital I/O

Synchronous serial clock input/output for SPI mode

Synchronous serial clock input/output for I2Câ¢ mode

RB7/TX/CK

10

RB7

TX

CK

Legend: TTL = TTL compatible input

ST = Schmitt Trigger input

O = Output

XTAL= Crystal Oscillator

I/O TLL

O CMOS

I/O

ST

Digital I/O

EUSART asynchronous transmit

EUSART synchronous clock (see related RX/DT)

CMOS = CMOS compatible input or output

I

= Input

P

= Power

XCVR = USB Differential Transceiver

ï£ 2010 Microchip Technology Inc.

Preliminary

DS41350E-page 13

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