Datasheet

PIC12F635/PIC16F636/639
DS41232D-page 190 © 2007 Microchip Technology Inc.
15.12 SPI Timing: Analog Front-End (AFE) for PIC16F639
AC CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Supply Voltage 2.0V ≤ V
DD ≤ 3.6V
Operating temperature -40°C ≤ T
AMB ≤ +85°C for industrial
LC Signal Input Sinusoidal 300 mV
PP
Carrier Frequency 125 kHz
LCCOM connected to V
SS
Param Sym Characteristic Min Typ† Max Units Conditions
AF33 FSCLK SCLK Frequency — — 3 MHz
AF34 Tcssc
CS
fall to first SCLK edge
setup time
100 — — ns
AF35 TSU SDI setup time 30 — — ns
AF36 THD SDI hold time 50 — — ns
AF37 THI SCLK high time 150 — — ns
AF38 TLO SCLK low time 150 — — ns
AF39 TDO SDO setup time — — 150 ns
AF40 TSCCS SCLK last edge to CS rise
setup time
100 — — ns
AF41 TCSH CS high time 500 — — ns
AF42 TCS1CS rise to SCLK edge setup
time
50 — — ns
AF43 TCS0 SCLK edge to CS fall setup
time
50 — — ns SCLK edge when CS is high
AF44 TSPIR Rise time of SPI data
(SPI Read command)
—10 — nsVDD = 3.0V. Time is measured from 10%
to 90% of amplitude
AF45 TSPIF Fall time of SPI data
(SPI Read command)
—10 — nsVDD = 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.