TDA7705 datasheet(21/42 Pages) STMICROELECTRONICS

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TDA7705

Electrical specifications

Doc ID 15938 Rev 9

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3.4.9

I2C interface

The following parameters apply to the serial bus communication when I2C protocol has

been selected at start-up. For the other electrical characteristics of the pins, Section 3.4.8

applies. The parameters of the following table are defined as in Figure 8.

Figure 8.

I2C bus timing diagram

Table 15.

I2C interface

Symbol

Parameter

Min

Max

Units

fSCL

SCL Clock frequency

500

kHz

tAA

SCL low to SDA data valid

0.3

µs

tbuf

time the bus must be kept free before a new

transmisison

1.3

µs

tHD-STA

START condition hold time

0.6

µs

tLOW

Clock low period

1.3

µs

tHIGH

Clock high period

0.6

µs

tSU-SDA

START condition setup time

0.1

µs

tHD-DAT

Data input hold time

0.9

µs

tSU-DAT

Data input setup time

0.1

µs

SDA & SCL rise time

0.3

µs

SDA & SCL fall time

0.3

µs

tSU-STOP

Stop condition setup time

0.6

µs

tDH

Data out time

0.3

µs

D95AU378A

tHIGH

tLOW

SCL

SDA IN

SDA OUT

tSU-STA

tHD-SDA

tHD-DAT

tSU-DAT

tSU-STOP

tbuf

tAA

tDH

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