STM8AF6213 datasheet(84/106 Pages) STMICROELECTRONICS

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Electrical characteristics

STM8AF6213/23/23A/26

84/106

DocID025118 Rev 5

9.3.9

I2C interface characteristics

Table 53. I2C characteristics

Symbol

Parameter

Standard mode I2CFast mode I2C(1)

1. fMASTER, must be at least 8 MHz to achieve max fast I2C speed (400 kHz)

Unit

Min(2)

2. Data based on standard I2C protocol requirement, not tested in production

Max(2)

Min(2)

Max(2)

tw(SCLL)

SCL clock low time

4.7

1.3

µs

tw(SCLH) SCL clock high time

4.0

0.6

tsu(SDA)

SDA setup time

250

100

th(SDA)

SDA data hold time

0(3)

3. The maximum hold time of the start condition has only to be met if the interface does not stretch the low

time

3450

0(4)

4. The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge the

undefined region of the falling edge of SCL

900(3)

tr(SDA)

tr(SCL)

SDA and SCL rise time

1000

300

tf(SDA)

tf(SCL)

SDA and SCL fall time

300

th(STA)

START condition hold time

4.0

0.6

µs

tsu(STA)

Repeated START condition setup time

4.7

0.6

tsu(STO)

STOP condition setup time

4.0

0.6

tw(STO:STA)

STOP to START condition time



(bus free)

4.7

1.3

tSP

Pulse width of spikes suppressed by

the input filter

050(5)

5. The minimum width of the spikes filtered by the analog filter is above tSP(max)

050

Capacitive load for each bus line

400

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