41594B datasheet(12/372 Pages) MICROCHIP

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PIC12LF1840T48A

DS41594B-page 12

Preliminary

 2011-2012 Microchip Technology Inc.

RA4/AN3/CPS3/OSC2/

CLKOUT/T1OSO/C1IN1-/CLKR/

SDO(1)/CK(1)/TX(1)/P1B(1)/

T1G(1)/MDCIN2

RA4

TTL

CMOS General purpose I/O.

AN3

—

A/D Channel 3 input.

CPS3

—

Capacitive sensing input 3.

OSC2

—

XTAL

Crystal/Resonator (LP, XT, HS modes).

CLKOUT

—

CMOS FOSC/4 output.

T1OSO

XTAL

Timer1 oscillator connection.

C1IN1-

—

Comparator C1 negative input.

CLKR

—

CMOS Clock Reference output.

SDO

—

CMOS SPI data output.

CMOS USART synchronous clock.

—

CMOS USART asynchronous transmit.

P1B

—

CMOS PWM output.

T1G

—

Timer1 Gate input.

MDCIN2

—

Modulator Carrier Input 2.

RA5/CLKIN/OSC1/T1OSI/

T1CKI/SRNQ/P1A(1)/CCP1(1)/

DT(1)/RX(1)

RA5

TTL

CMOS General purpose I/O.

CLKIN

CMOS

—

External clock input (EC mode).

OSC1

XTAL

—

Crystal/Resonator (LP, XT, HS modes).

T1OSI

XTAL

Timer1 oscillator connection.

T1CKI

—

Timer1 clock input.

SRNQ

—

CMOS SR Latch inverting output.

P1A

—

CMOS PWM output.

CCP1

CMOS Capture/Compare/PWM 1.

CMOS USART synchronous data.

—

USART asynchronous input.

VDD

Power

—

Positive supply.

VSS

Power

—

Ground reference.

VDDRF

Power

—

Positive supply.

VSSRF

Power

—

Ground reference.

TABLE 1-2:

PIC12LF1840T48A PINOUT DESCRIPTION (CONTINUED)

Name

Function

Input

Type

Output

Type

Description

Legend: AN = Analog input or output CMOS= CMOS compatible input or output

= Open Drain

TTL = TTL compatible input

= Schmitt Trigger input with CMOS levels I2C™ = Schmitt Trigger input with I2C

HV = High Voltage

XTAL = Crystal

levels

Note 1:

Pin functions can be assigned to one of two pin locations via software. See the APFCON register (Register 12-1).

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