LIS2DH12TR datasheet(9/53 Pages) STMICROELECTRONICS

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LIS2DH12

Block diagram and pin description

Table 2. Pin description

Pin#

Name

Function

SCL

SPC

I2C serial clock (SCL)

SPI serial port clock (SPC)

2CS

SPI enable

I2C/SPI mode selection:

1: SPI idle mode / I2C communication enabled

0: SPI communication mode / I2C disabled

3(1)

1. SDO/SA0 pin is internally pulled up. Refer to Table 3 for the internal pull-up values (typ).

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)

Res

Connect to GND

GND

0 V supply

GND

0 V supply

GND

0 V supply

Vdd

Power supply

Vdd_IO

Power supply for I/O pins

INT2

Interrupt pin 2

INT1

Interrupt pin 1

Table 3. Internal pull-up values (typ.) for SDO/SA0 pin

Vdd_IO

Resistor value for SDO/SA0 pin

Typ. (kΩ)

1.7 V

54.4

1.8 V

49.2

2.5 V

30.4

3.6 V

20.4

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