PIC12F635ESS datasheet(192/234 Pages) MICROCHIP

192 / 234 page

PIC12F635/PIC16F636/639

DS41232D-page 190

15.12 SPI Timing: Analog Front-End (AFE) for PIC16F639

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise stated)

Supply Voltage

2.0V

≤ VDD ≤ 3.6V

Operating temperature

-40°C

≤ TAMB ≤ +85°C for industrial

LC Signal Input

Sinusoidal 300 mVPP

Carrier Frequency

125 kHz

LCCOM connected to VSS

Param

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

AF33

FSCLK

SCLK Frequency

—

MHz

AF34

Tcssc

CS fall to first SCLK edge

setup time

100

—

AF35

TSU

SDI setup time

—

AF36

THD

SDI hold time

—

AF37

THI

SCLK high time

150

—

AF38

TLO

SCLK low time

150

—

AF39

TDO

SDO setup time

—

150

AF40

TSCCS

SCLK last edge to CS rise

setup time

100

—

AF41

TCSH

CS high time

500

—

AF42

TCS1CS rise to SCLK edge setup

time

—

AF43

TCS0

SCLK edge to CS fall setup

time

—

SCLK edge when CS is high

AF44

TSPIR

Rise time of SPI data

(SPI Read command)

—10

—

VDD

= 3.0V. Time is measured from 10%

to 90% of amplitude

AF45

TSPIF

Fall time of SPI data

(SPI Read command)

—10

—

VDD

= 3.0V. Time is measured from 90%

to 10% of amplitude

Parameter is characterized but not tested.

†

Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are

not tested.

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