AIS326DQ STMicroelectronics, AIS326DQ Datasheet - Page 20

• Manufacturer Part Number: AIS326DQ
• Description: IC ACCELEROMETER 3-AXIS 28-QFN
• Manufacturer: STMicroelectronics

Specifications of AIS326DQ

• Axis: X, Y, Z
• Acceleration Range: ±2g, 6g
• Sensitivity: 1024LSB/g, 340LSB/g
• Voltage - Supply: 3 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 40Hz ~ 2.56kHz Selectable
• Interface: SPI
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 6 g
• Digital Output - Number Of Bits: 12 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current: 0.67 mA
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: SPI
• Mounting Style: SMD/SMT
• Shutdown: Yes
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 7mm
• Product Length (mm): 7mm
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Digital interface
5.1.1
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of CS while the last bit (bit 15, bit 23, ...) starts at the last falling edge of SPC just before the
rising edge of CS.
bit 0: RW bit. When 0, the data DI(7:0) is written into the device. When 1, the data DO(7:0)
from the device is read. In latter case, the chip will drive SDO at the start of bit 8.
bit 1: MS bit. When 0, the address will remain unchanged in multiple read/write commands.
When 1, the address will be auto increased in multiple read/write commands.
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 into the device (MSb
first).
bit 8-15: data DO(7:0) (read mode). This is the data that will be read from the device (MSb
first).
In multiple read/write commands further blocks of 8 clock periods will be added. When MS
bit is 0 the address used to read/write data remains the same for every block. When MS bit
is ‘1’ the address used to read/write data is increased at every block.
The function and the behavior of SDI and SDO remain unchanged.
SPI Read
Figure 6.
The SPI Read command is performed with 16 clock pulses. Multiple byte read command is
performed adding blocks of 8 clock pulses at the previous one.
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).
bit 16-... : data DO(...-8). Further data in multiple byte reading.
SPI read protocol
SDO
SPC
SDI
CS
RW
MS
Doc ID 14956 Rev 4
AD5 AD4 AD3 AD2 AD1 AD0
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
AIS326DQ