PIC12F635ESS datasheet(17/234 Pages) MICROCHIP

17 / 234 page

DS41232D-page 15

PIC12F635/PIC16F636/639

RC3/LFDATA/RSSI/CCLK/SDO

RC3

TTL

CMOS

General purpose I/O.

LFDATA

—

CMOS

Digital output representation of analog input signal to LC pins.

RSSI

—

Current

Received signal strength indicator. Analog current that is

proportional to input amplitude.

CCLK

—

Carrier clock output.

SDIO

TTL

CMOS

Input/Output for SPI communication.

RC4/C2OUT

RC4

TTL

CMOS

General purpose I/O.

C2OUT

—

CMOS

Comparator2 output.

RC5

TTL

CMOS

General purpose I/O.

VDDT

—

Power supply for Analog Front-End. In this document, VDDT is

treated the same as VDD, unless otherwise stated.

VSST

—

Ground reference for Analog Front-End. In this document, VSST is

treated the same as VSS, unless otherwise stated.

VDD

—

Power supply for microcontroller.

VSS

—

Ground reference for microcontroller.

TABLE 1-3:

PIC16F639 PINOUT DESCRIPTIONS (CONTINUED)

Name

Function

Input

Type

Output

Type

Description

Legend:

= Analog input or output

CMOS = CMOS compatible input or output

= Direct

= High Voltage

= Schmitt Trigger input with CMOS levels

OD = Open Drain

TTL = TTL compatible input

XTAL

= Crystal

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