參數(shù)資料
型號(hào)： LIS302DL
廠商： STMicroelectronics N.V.
元件分類： 運(yùn)動(dòng)傳感器
英文描述： MEMS motion sensor 3-axis- ±2g/±8g smart digital output piccolo accelerometer
中文描述： MEMS運(yùn)動(dòng)傳感器3軸- ±2g/±8g智能數(shù)字輸出piccolo加速計(jì)
文件頁(yè)數(shù)： 13/29頁(yè)
文件大?。?/td> 245K
代理商： LIS302DL
LIS302DL
Digital Interfaces
13/29
5.1.1
I
2
C operation
The transaction on the bus is started through a START (ST) signal. A START condition is
defined as a HIGH to LOW transition on the data line while the SCL line is held HIGH. After
this has been transmitted by the Master, the bus is considered busy. The next byte of data
transmitted after the start condition contains the address of the slave in the first 7 bits and
the eighth bit tells whether the Master is receiving data from the slave or transmitting data to
the slave. When an address is sent, each device in the system compares the first seven bits
after a start condition with its address. If they match, the device considers itself addressed
by the Master.
The Slave ADdress (SAD) associated to the LIS302DL is 001110xb.
SDO
pad can be used
to modify less significant bit of the device address. If SDO pad is connected to voltage
supply LSb is ‘1’ (address 0011101b) else if SDO pad is connected to ground LSb value is
‘0’ (address 0011100b). This solution permits to connect and address two different
accelerometer to the same I
2
C lines.
Data transfer with acknowledge is mandatory. The transmitter must release the SDA line
during the acknowledge pulse. The receiver must then pull the data line LOW so that it
remains stable low during the HIGH period of the acknowledge clock pulse. A receiver which
has been addressed is obliged to generate an acknowledge after each byte of data has
been received.
The I
2
C embedded inside the LIS302DL behaves like a slave device and the following
protocol must be adhered to. After the start condition (ST) a salve address is sent, once a
slave acknowledge (SAK) has been returned, a 8-bit sub-address will be transmitted: the 7
LSb represent the actual register address while the MSB enables address auto increment. If
the MSb of the SUB field is 1, the SUB (register address) will be automatically incremented
to allow multiple data read/write.
The slave address is completed with a Read/Write bit. If the bit was ‘1’ (Read), a repeated
START (SR) condition will have to be issued after the two sub-address bytes; if the bit is ‘0’
(Write) the Master will transmit to the slave with direction unchanged.
Transfer when Master is writing one byte to slave
Transfer when Master is writing multiple bytes to slave:
Master
ST
SAD + W
Transfer when Master is receiving (reading) one byte of data from slave:
Master
ST
SAD + W
SUB
DATA
SP
Slave
SAK
SAK
SAK
SUB
DATA
DATA
SP
Slave
SAK
SAK
SAK
SAK
Master
ST
SAD + W
SUB
SR
SAD + R
NMAK
SP
Slave
SAK
SAK
SAK
DATA
相關(guān)PDF資料
PDF描述
LIS302DLTR MEMS motion sensor 3-axis - 【2g/【8g smart digital output piccolo accelerometer
LIS331AL MEMS inertial sensor: 3-axis - 【2g analog output “nano” accelerometer
LIS331ALTR MEMS inertial sensor: 3-axis - 【2g analog output “nano” accelerometer
LIS331DL MEMS motion sensor 3-axis - 【2g/【8g smart digital output “nano” accelerometer
LIS331DLTR MEMS motion sensor 3-axis - 【2g/【8g smart digital output “nano” accelerometer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LIS302DL_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MEMS motion sensor 3-axis - 【2g/【8g smart digital output “piccolo” accelerometer
LIS302DL_08 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MEMS motion sensor 3-axis - ?± 2g/?± 8g smart digital output a??piccoloa?? accelerometer
LIS302DLH 功能描述:加速計(jì) - 板上安裝 3 AXIS DIGITAL MEMS ACCELEROMETER RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
LIS302DLHTR 功能描述:加速計(jì) - 板上安裝 MEMS digital output L-Power Motion Snsr RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
LIS302DLTR 功能描述:加速計(jì) - 板上安裝 MEMS Motion Sensor RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
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