Datasheet

Digital interfaces LSM303DLHC

18/42 Doc ID 018771 Rev 1

5 Digital interfaces

The registers embedded inside the LSM303DLHC are accessible through two separate I

serial interfaces, one for the accelerometer core and one for the magnetometer core.

5.1 I

C serial interface

The LSM303DLHC I

C is a bus slave. The I

C is employed to write the data into the

registers whon also be read back.

The relevant I

C terminology is given in the table below.

There are two signals associated with the I

C bus, the serial clock line (SCL) and the serial

data line (SDA). The latter is a bidirectional line used for sending and receiving the data

to/from the interface.

Table 9. Serial interface pin description

PIN Name PIN Description

SCL I

C serial clock (SCL)

SDA I

C serial data (SDA)

Table 10. Serial interface pin description

Term Description

Transmitter The device which sends data to the bus

Receiver The device which receives data from the bus

Master

The device which initiates a transfer, generates clock signals, and terminates a

transfer

Slave The device addressed by the master