MMA7455LR2 datasheet(5/35 Pages) FREESCALE

5 / 35 page

Sensors

Freescale Semiconductor

MMA7455L

Table 1. Pin Descriptions

*This address selection capability is not enabled at the default state. If the user wants to use it, factory programming is required. If activated (pin4

on the device is active).

<$1D= 0001 1101> bit 0 is VDD on pin 4

<$1C=0001 1100> bit 0 is GND on pin 4. If the pin is programmed it cannot be left NC.

Figure 2. Simplified Accelerometer Functional Block Diagram

Pin #

Pin Name

Description

Pin Status

DVDD_IO

Digital Power for I/O pads

Input

2GND

Ground

Input

3N/C

No internal connection. Leave unconnected or connect to Ground.

Input

IADDR0

I2C Address Bit 0 (optional)*

Input

5GND

Ground

Input

AVDD

Analog Power

Input

7CS

SPI Enable (0), I2C Enable (1)

Input

INT1/DRDY

Interrupt 1/ Data Ready

Output

9INT2

Interrupt 2

Output

N/C

No internal connection. Leave unconnected or connect to Ground.

Input

N/C

Leave unconnected or connect to Ground.

Input

SDO

SPI Serial Data Output

Output

SDA/SDI/SDO

I2C Serial Data (SDA), SPI Serial Data Input (SDI), 3-wire interface Serial Data Output (SDO) Open Drain/Input/Output

SCL/SPC

I2C Serial Clock (SCL), SPI Serial Clock (SPC)

Input

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