ASM330LHH datasheet(25/84 Pages) STMICROELECTRONICS

Part #	ASM330LHH

Description	Automotive 6-axis inertial module: 3D accelerometer and 3D gyroscope

PDF	84 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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25 / 84 page

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ASM330LHH

Digital interfaces

Data are transmitted in byte format (DATA). Each data transfer contains 8 bits. The number

of bytes transferred per transfer is unlimited. Data is transferred with the Most Significant bit

(MSb) first. If a slave receiver doesn’t acknowledge the slave address (i.e. it is not able to

receive because it is performing some real-time function) the data line must be left HIGH by

the slave. The master can then abort the transfer. A LOW to HIGH transition on the SDA line

while the SCL line is HIGH is defined as a STOP condition. Each data transfer must be

terminated by the generation of a STOP (SP) condition.

In the presented communication format MAK is Master acknowledge and NMAK is No

Master Acknowledge.

Table 14. Transfer when master is receiving (reading) one byte of data from slave

Master

SAD + W

SUB

SAD + R

NMAK

Slave

SAK

DATA

Table 15. Transfer when master is receiving (reading) multiple bytes of data from slave

Master ST SAD+W

SUB

SR SAD+R

MAK

NMAK SP

Slave

SAK

DATA

DAT

DATA

ASM330LHH Datasheet(PDF) 25 Page - STMicroelectronics