AD7143 datasheet(5/56 Pages) AD

Part #	AD7143

Description	Programmable Controller for Capacitance Touch Sensors

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AD7143

Rev. 0 | Page 5 of 56

I2C TIMING SPECIFICATIONS

TA = −40°C to +85°C, VCC = 2.6 V to 3.6 V, unless otherwise noted. Sample tested at 25°C to ensure compliance. All input signals timed

from a voltage level of 1.6 V.

Table 4. I2C Timing Specifications1

Parameter

Limit

Unit

Description

fSCLK

400

kHz max

t1

0.6

μs min

Start condition hold time, tHD; STA

t2

1.3

μs min

Clock low period, tLOW

t3

0.6

μs min

Clock high period, tHIGH

t4

100

ns min

Data setup time, tSU; DAT

t5

300

ns min

Data hold time, tHD; DAT

t6

0.6

μs min

Stop condition setup time, tSU; STO

t7

0.6

μs min

Start condition setup time, tSU; STA

t8

1.3

μs min

Bus free time between stop and start conditions, tBUF

tR

300

ns max

Clock/data rise time

tF

300

ns max

Clock/data fall time

1 Guaranteed by design, not production tested.

200µA

IOL

200µA

IOH

1.6V

TO OUTPUT

CL

50pF

Figure 2. Load Circuit for Digital Output Timing Specifications

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