RL = 1 kΩ

VCC

CL = 50 pF

(See Note A)

tbuf

ticr

tsth

tsds

tsdh

ticf

ticr

tscl

tsch

tsts

tvd(ACK)

or tvdL

tvdH

Stop

Condition

tsps

Repeat

Start

Condition

Start or Repeat

Start Condition

SCL

SDA

Start

Condition

(S)

Address

Bit 7

(MSB)

Data

Bit 0

(LSB)

Stop

Condition

(P)

Two Bytes for Complete

Device Programming

I2C PORT LOAD CONFIGURATION

VOLTAGE WAVEFORMS

ticf

Stop

Condition

(P)

tsp

DUT

SDn, SCn

R/W

Bit 0

(LSB)

ACK

(A)

Data

Bit 7

(MSB)

Address

Bit 1

Address

Bit 6

ACK

(A)

BYTE

DESCRIPTION

I2C address + R/W

Control register data

1

2

A.

CL includes probe and jig capacitance.

B.

All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω,

tr/tf = 30 ns.

C.

The outputs are measured one at a time, with one transition per measurement.

0.7 × V

CC

0.7 × V

CC

0.3 × V

CC

0.3 × V

CC

9

TCA9543A

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SCPS206B – MARCH 2014 – REVISED NOVEMBER 2019

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7 Parameter Measurement Information

Figure 5. I2C Interface Load Circuit, Byte Descriptions, and Voltage Waveforms