TDA7808 datasheet(28/39 Pages) STMICROELECTRONICS

Part #	TDA7808

Description	High efficiency digital input automotive quad power amplifier, start stop compatible

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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I2C bus interface

TDA7808

28/39

DS12230 Rev 4

9.7

I2C bus timings

This paragraph describes more in detail the I2C bus protocol used and its timings. Figure 32

and Table 10 include the timings that need to be respected in order to correctly write into/

read from the I2C registers.

Figure 32. I2C bus interface timing

30K < R < 38K

R < 15K

Table 9. Address threshold (continued)

ADD2

ADD1

Rload

Table 10. I2C bus interface timing

Symbol

Parameter

Min

Max

Unit

Fscl

SCL (clock line) frequency

400

kHz

Tscl

SCL period

2500

Tsclh

SCL high time

0.6

μs

Tscll

SCL low time

1.3

μs

Tsstart

Setup time for start condition

0.6

μs

Thstart

Hold time for start condition

0.6

μs

Tsstop

Setup time for stop condition

0.6

μs

Tbuf

Bus free time between a stop and a start condition

1.3

μs

Tssda

Setup time for data line

100

Thsda

Hold time for data line

0(1)

1. Device must internally provide a hold time of at least 300 ns for the SDA signal to bridge the undefined

region of the falling edge of SCL.

-ns

Fall time for SCL and SDA

300

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