Digilent 410-255P-KIT Bedienungsanleitung PDF herunterladen

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Revision: November 9, 2012

Note: This document applies to REV A of the board

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Overview

The PmodACL2 is a 3-axis digital

accelerometer module powered by the Analog

Devices ADXL362.

Features include:

• user-selectable resolution

• single or double-tap detection

• activity and inactivity monitoring

• free fall detection

• SPI Communication

Functional Description

The PmodACL2 uses a standard 12-pin

connector and can communicate via SPI.

While the ADXL362 is in Measurement Mode,

it continuously measures and stores

acceleration data in the X-data, Y-data, and Z-

data registers.

Do not exceed 3.3V on the VCC power supply.

Exceeding this limit could permanently damage

the ADXL362.

Interface

All communications with the device must

specify a register address and a flag that

indicate whether the communication is a read

or a write. Actual data transfer always follows

the register address and communication flag.

Perform device configuration by writing to the

control registers within the accelerometer.

Access accelerometer data by reading the

device registers.

You may find a full list of registers, their

functionality, and communication specifications

in the ADXL362 datasheet available at:

www.analog.com.

Table 1. Interface Connector Signal

Description

The SPI standard uses four signal lines. These

are slave select (~SS), master out slave in

(MOSI), master in slave out (MISO), and serial

clock (SCLK). These four signal lines map to

the following signals on the ADXL345: ~SS

corresponds to the chip select signal

(~CS),

MOSI corresponds to serial data input (SDI),

MISO corresponds to serial data output (SDO),

and SCK corresponds to the serial clock

(SCLK). (See Table 1 for signal descriptions.)

Connector J1 – SPI Communications

Pin Signal Description

1 ~SS Slave select

2 MOSI SPI master out slave in data

3 MISO SPI master in slave out data

4 SCLK Serial clock

5 GND Power supply ground

6 VCC Power supply (3.3V)

7 INT2 Interrupt two

8 INT1 Interrupt one

9 NC Not connected

10 NC Not connected

11 GND Power supply ground

12 VCC Power supply (3.3V)

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Digilent 410-255P-KIT Bedienungsanleitung

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