LIS35DE STMicroelectronics, LIS35DE Datasheet - Page 22

• Manufacturer Part Number: LIS35DE
• Description: Board Mount Accelerometers MEMS MOTION SENSOR 3 AXIS 2G/8G SDO NAN
• Manufacturer: STMicroelectronics

Specifications of LIS35DE

• Sensing Axis: Triple
• Acceleration: 2 g, 8 g
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.16 V
• Supply Current: 0.3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C, SPI
• Shutdown: Yes
• Sensitivity: 18 mg/digit, 72 mg/digit
• Package / Case: LGA-14
• Output Type: Digital
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Digital interfaces
5.2.3
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The SPI write command is performed with 16 clock pulses. Multiple byte write command is
performed adding blocks of 8 clock pulses at the previous one.
bit 0: WRITE bit. The value is 0.
bit 1: MS bit. When 0 do not increment address, when 1 increment address in multiple
writing.
bit 2 -7: address AD(5:0). This is the address field of the indexed register.
bit 8-15: data DI(7:0) (write mode). This is the data that will be written inside the device
(MSb first).
bit 16-... : data DI(...-8). Further data in multiple byte writing.
Figure 10. Multiple bytes SPI Write protocol (2 bytes example)
SPI read in 3-wires mode
3-wires mode is entered by setting to 1 bit SIM (SPI serial interface mode selection) in
CTRL_REG2.
Figure 11. SPI read protocol in 3-wires mode
The SPI read command is performed with 16 clock pulses:
bit 0: READ bit. The value is 1.
bit 1: MS bit. When 0 do not increment address, when 1 increment address in multiple
reading.
bit 2-7: address AD(5:0). This is the address field of the indexed register.
bit 8-15: data DO(7:0) (read mode). This is the data that will be read from the device (MSb
first).
Multiple read command is also available in 3-wires mode.
SPC
SDI
CS
SDI/O
SPC
CS
RW
MS
AD5 AD4 AD3 AD2 AD1 AD0
RW
MS
AD5 AD4 AD3 AD2 AD1 AD0
Doc ID 15594 Rev 1
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
LIS35DE