LPS22HB datasheet(13/49 Pages) STMICROELECTRONICS

部件名	LPS22HB

功能描述	MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer

PDF	49 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

13 / 49 page

DocID027083 Rev 5

13/49

LPS22HB

Mechanical and electrical specifications

3.3.2

I2C - inter-IC control interface

Subject to general operating conditions for Vdd and TOP.

Figure 5. I2C slave timing diagram

Note:

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

Table 7. I2C slave timing values

Symbol

Parameter (1)

I²C standard mode(1)

I²C fast mode(1)

Unit

Min

Max

Min

Max

f(SCL)

SCL clock frequency

100

400

kHz

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

0.01

3.45

0.9

μs

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

1000

20 + 0.1Cb(2)

300

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

300

20 + 0.1Cb

(2)

300

th(ST)

START condition hold time

0.6

μs

tsu(SR)

Repeated START condition

setup time

4.7

0.6

tsu(SP)

STOP condition setup time

0.6

tw(SP:SR)

Bus free time between STOP

and START condition

4.7

1.3

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

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

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