LIS2DS12 datasheet(11/68 Pages) STMICROELECTRONICS

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DocID027753 Rev 4

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LIS2DS12

Block diagram and pin description

Table 2. Pin description

Pin#

Name

Function

SCL

SPC

I2C serial clock (SCL)

SPI serial port clock (SPC)

2(1)

1. CS has an active pull-up and can be left unconnected

SPI enable

I2C/SPI mode selection

(1: SPI idle mode / I2C communication enabled;

0: SPI communication mode / I2C disabled)

3(2)

2. When the sensor hub is used, this pin is the I2C data master line (MSDA), is internally set to 0 and can be

internally pulled up through the TUD_EN bit of FUNC_CTRL (3Fh).

SDO

SA0

SPI serial data output (SDO)

I2C less significant bit of the device address (SA0)

SDA

SDI

SDO

I2C serial data (SDA)

SPI serial data input (SDI)

3-wire interface serial data output (SDO)

Internally not connected. Can be tied to VDD, VDDIO or GND.

GND

0 V supply

RES

Connect to GND

GND

0 V supply

Vdd

Power supply

Vdd_IO

Power supply for I/O pins

11(3)

3. When sensor hub is used, this pin is the I2C clock master line (MSCL) and can be internally pulled up

through the TUD_EN bit of FUNC_CTRL (3Fh).

INT2

Interrupt pin 2

INT1

Interrupt pin 1

LIS2DS12 Datasheet(PDF) 11 Page - STMicroelectronics

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