Datasheet

DocID17530 Rev 2 9/54
LIS3DH Block diagram and pin description
54
Table 2. Pin description
Pin# Name Function
1 Vdd_IO Power supply for I/O pins
2 NC Not connected
3 NC Not connected
4
SCL
SPC
I
2
C serial clock (SCL)
SPI serial port clock (SPC)
5 GND 0 V supply
6
SDA
SDI
SDO
I
2
C serial data (SDA)
SPI serial data input (SDI)
3-wire interface serial data output (SDO)
7
(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)
I
2
C less significant bit of the device address (SA0)
8CS
SPI enable
I
2
C/SPI mode selection:
1: SPI idle mode / I
2
C communication enabled
0: SPI communication mode / I
2
C disabled
9 INT2 Inertial interrupt 2
10 RES Connect to GND
11 INT1 Inertial interrupt 1
12 GND 0 V supply
13 ADC3 Analog-to-digital converter input 3
14 Vdd Power supply
15 ADC2 Analog-to-digital converter input 2
16 ADC1 Analog-to-digital converter input 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