AD7142ACPZ-REEL1 datasheet(8/73 Pages) AD

部件名	AD7142ACPZ-REEL1

功能描述	Programmable Controller for Capacitance Touch Sensors

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制造商	AD [Analog Devices]

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AD7142

Rev. A | Page 7 of 72

I2C TIMING SPECIFICATIONS (AD7142-1)

TA = −40°C to +85°C; VDRIVE = 1.65 V to 3.6 V; AVCC, DVCC = 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 5. 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.

SCLK

SDATA

tR

tF

t2

t5

t1

t3

t4

STOP START

STOP

START

t7

t6

t1

t8

Figure 4. I2C Detailed Timing Diagram

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制造商	部件名	数据表	功能描述
Analog Devices	AD7142ACPZ-REEL	1Mb / 70P	Programmable Controller for Capacitance Touch Sensors

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