Digital Interfaces

LIS302DL

12/29

5

Digital Interfaces

SPI serial interfaces. The latter may be SW configured to operate either in 3-wire or 4-wire

interface mode.

line must be tied high (i.e connected to Vdd_IO).

5.1

whose content can also be read back.

Serial DAta line (SDA). The latter is a bidirectional line used for sending and receiving the

data to/from the interface. Both the lines are connected to Vdd_IO through a pull-up resistor

embedded inside the LIS302DL. When the bus is free both the lines are high.

Normal Mode.

Table 5.

Serial interface pin description

PIN Name

PIN Description

CS

SPI enable

SCL/SPC

SPI Serial Port Clock (SPC)

SDA/SDI/SDO

SPI Serial Data Input (SDI)

3-wire Interface Serial Data Output (SDO)

SDO

SPI Serial Data Output (SDO)

Table 6.

Serial interface pin description

Term

Description

Transmitter

The device which sends data to the bus

Receiver

The device which receives data from the bus

Master

The device which initiates a transfer, generates clock signals and terminates a

transfer

Slave

The device addressed by the master