Datasheet

I2CXL-MaxSonar

- EZ™ Series

Page 7

Web: www.maxbotix.com

PD11848k

MaxBotix Inc., products are engineered and assembled in the USA

Pulse Width

between 200uS

and 25.4ms

Power applied

Sensor ready for I2C

Pin 2-Address

Announce / Status

Pin 3-Temporary

Default

Vcc

Pin 6-V+

Gnd

Vcc

Gnd

Vcc

Gnd

0ms ~70ms ~90ms ~115ms ~135ms

Pulled high unless grounded by external source

Note: Checked for

external grounding here

I2CXL-MaxSonar-EZ Timing

The I2CXL-MaxSonar-EZ starts operating within milliseconds of application of power. The major timing of power-up

events for the I2CXL-MaxSonar-EZ can be seen in the diagram below.

Power-up Timing Diagram

After the sensor is commanded to take a range reading it sends an ultrasonic pulse, waits between ~15ms to ~70ms to

detect a target, and determines the range Then the sensor will resume I2C communications. If the sensor is addressed

while in the middle of a range reading, all requests for communication will be responded with a NACK (not acknowledge).

In environments that reflect acoustic noise well, sampling faster than 10Hz could cause the sensor to pick up signals from

previous ultrasonic pulses and report false data. It is possible, however, to take range readings at a significantly faster rate

in certain environments.

When changing the part address, ensure that power to the sensor is not disrupted or memory corruption may occur. If the

memory becomes corrupted, the part should automatically use the default shipped address on power up. It is

recommended to avoid changing the address often, as it could cause premature memory failure due to repeated erase/write

cycles.

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