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LIS331HH

MEMS digital output motion sensor ultra low-power high full-scale 3-axes “nano” accelerometer

STMicroelectronics 

Mechanical and electrical specifications

LIS331HH

2.3.2

I2C - inter IC control interface

Subject to general operating conditions for Vdd and Top.

Table 6. I2C slave timing values

Symbol

Parameter

f(SCL)

tw(SCLL)

tw(SCLH)

tsu(SDA)

th(SDA)

SCL clock frequency

SCL clock low time

SCL clock high time

SDA setup time

SDA data hold time

tr(SDA) tr(SCL) SDA and SCL rise time

tf(SDA) tf(SCL) SDA and SCL fall time

th(ST)

tsu(SR)

tsu(SP)

tw(SP:SR)

START condition hold time

Repeated START condition

setup time

STOP condition setup time

Bus free time between STOP

and START condition

I2C standard mode (1)

Min

Max

0

100

4.7

4.0

250

0

3.45

1000

300

4

I2C fast mode (1)

Min

Max

0

400

1.3

0.6

100

0.01

0.9

20 + 0.1Cb (2)

300

20 + 0.1Cb (2)

300

0.6

4.7

0.6

4

0.6

4.7

1.3

Unit

KHz

µs

ns

µs

ns

µs

Figure 4. I2C slave timing diagram (3)

START

SDA

REPEATED

START

tsu(SR)

tw(SP:SR)

START

tf(SDA)

SCL

tr(SDA)

tsu(SDA)

th(SDA)

tsu(SP)

STOP

th(ST) tw(SCLL)

tw(SCLH)

tr(SCL)

tf(SCL)

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

2. Cb = total capacitance of one bus line, in pF

3. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both port

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Doc ID 16366 Rev 1

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