## NFC_Tag_M24LR6E  [![Build Status](https://travis-ci.com/Seeed-Studio/NFC_Tag_M24LR6E.svg?branch=master)](https://travis-ci.com/Seeed-Studio/NFC_Tag_M24LR6E)

![](https://statics3.seeedstudio.com/images/product/grove%20nfc%20tag.jpg)

[Grove - NFC Tag](https://www.seeedstudio.com/s/Grove-NFC-Tag-p-1866.html)

Grove - NFC Tag is a highly integrated Near Field Communication Tag module,this module is I2C interface,which base on M24LR64E-R,M24LR64E-R have a 64-bit unique identifier and 64 -Kbit EEPROM.Grove - NFC Tag attach an independent PCB antenna which can easily stretch out of any enclosure you use, leaving more room for you to design the exterior of your project.

### Features

##### *I2C interface* #####
+ Two-wire I2C Serial interface supports 400KHZ protocol
+ Single supply voltage: 1.8V ~ 5.5V
+ Byte and Page Write(up to 4 bytes)
+ Random and Sequential read modes
+ Self-timed programming cycle
+ Automatic address incrementing

##### *Contactless interface* #####
+ ISO 15693 and ISO 18000-3 mode 1 compatible
+ 13.56 MHz ± 7 kHz carrier frequency
+ To tag: 10% or 100% ASK modulation using 1/4 (26Kbit/s) or 1/256 (1.6 Kbit/s) pulse position coding
+ From tag: load modulation using Manchester coding with 423 kHz and 484 kHz subcarriers in low (6.6 kbit/s) or high (26 kbit/s) data rate mode. Supports the 53 kbit/s data rate with Fast commands
+ Internal tuning capacitance: 27.5 pF
+ 64-bit unique identifier (UID)
+ Read Block & Write (32-bit blocks)

##### *Memory* #####
+ 64-Kbit EEPROM organized into:
 1. 8192 bytes in I2C mode
 2. 2048 blocks of 32 bits in RF mode 
+ Write time
 1. I2C: 5ms(max)
 2. RF: 5.75 ms including the internal Verify time
+ More than 1 million write cycles
+ More than 40-year data retention
+ Multiple password protection in RF mode
+ Single password protection in I2C mode


### Getting Started
please follow the example sketch( **LedControl** ) and you can find some userful things in resources directory. Have fun!

For more information please visit [wiki](http://wiki.seeedstudio.com/Grove_NFC_Tag/).


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This software is written by lawliet zou (![](http://www.seeedstudio.com/wiki/images/f/f8/Email-lawliet.zou.jpg)) for [Seeed Technology Inc.](http://www.seeed.cc) and is licensed under [The MIT License](http://opensource.org/licenses/mit-license.php). Check License.txt/LICENSE for the details of MIT license.<br>

Contributing to this software is warmly welcomed. You can do this basically by<br>
[forking](https://help.github.com/articles/fork-a-repo), committing modifications and then [pulling requests](https://help.github.com/articles/using-pull-requests) (follow the links above<br>
for operating guide). Adding change log and your contact into file header is encouraged.<br>
Thanks for your contribution.

Seeed is a hardware innovation platform for makers to grow inspirations into differentiating products. By working closely with technology providers of all scale, Seeed provides accessible technologies with quality, speed and supply chain knowledge. When prototypes are ready to iterate, Seeed helps productize 1 to 1,000 pcs using in-house engineering, supply chain management and agile manufacture forces. Seeed also team up with incubators, Chinese tech ecosystem, investors and distribution channels to portal Maker startups beyond.

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