參數(shù)資料
型號(hào): LSM303DLHTR
廠(chǎng)商: STMICROELECTRONICS
元件分類(lèi): 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PBGA28
封裝: 5 X 5 MM, 1 MM HEIGHT, ROHS COMPLIANT, PLASTIC, LGA-16
文件頁(yè)數(shù): 16/47頁(yè)
文件大?。?/td> 585K
代理商: LSM303DLHTR
LSM303DLH
Digital interfaces
Doc ID 16941 Rev 1
23/47
7
Digital interfaces
The registers embedded inside the LSM303DLH are accessible through two separate I2C
serial interfaces: one for the accelerometer core and the other for the magnetometer core.
The two interfaces can be connected together on the PCB.
7.1
I2C serial interface
The LSM303DLH I2C is a bus slave. The I2C is employed to write the data into the registers
whose content can also be read back.
The relevant I2C terminology is given in the table below.
There are two signals associated with the I2C 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_A
I2C serial clock (SCL) for accelerometer
SDA_A
I2C serial data (SDA) for accelerometer
SCL_M
I2C serial clock (SCL) for magnetometer
SDA_M
I2C serial data (SDA) for magnetometer
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
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