AD7879 datasheet(4/36 Pages) AD

Part #	AD7879

Description	Low Voltage Controller for Touch Screens

PDF	36 Pages

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Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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4 / 36 page

AD7879

Rev. 0 | Page 4 of 36

SPI TIMING SPECIFICATIONS (AD7879)

TA = −40°C to +85°C; VCC = 1.6 V to 3.6 V, unless otherwise noted. Sample tested at 25°C to ensure compliance. All input signals are

specified with tR = tF = 5 ns (10% to 90% of VCC) and timed from a voltage level of 1.4 V.

Table 2.

Parameter1

Limit at TMIN, TMAX

Unit

Description

fSCLK

MHz max

ns min

CS falling edge to first SCL falling edge

ns min

SCL high pulse width

ns min

SCL low pulse width

ns min

DIN setup time

ns min

DIN hold time

ns max

DOUT access time after SCL falling edge

ns max

CS rising edge to DOUT high impedance

ns min

SCL rising edge to CS high

1 Guaranteed by design, not production tested.

SCL

DIN

DOUT

116

MSB

LSB

MSB

LSB

Figure 2. Detailed SPI Timing Diagram

AD7879 Datasheet(PDF) 4 Page - Analog Devices