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ACR122 NFC Reader
1.0 Introduction
The ACR122U is a PC-linked Contactless Smart Card Reader/Writer developed on the 13.56MHz
Contactless Technology. This device is designed to support not only MiFare and ISO14443 Type A and
B Cards but also FeliCa and NFC tags.
This reader acts as a Plug and Play (PnP) device so there is no need to provide drivers to users.
Furthermore, read and write operations to contactless tags are faster and more efficient since the
device makes use of high-speed card access by making use of pseudo-APDU’s and full USB speed of
12 Mbps.
The ACR122U SDK provides the user the following: sample applications, sample codes, tools and
utilities that can be used to experience the features and capabilities of ACR122, the world’s first CCID
compliant NFC Card Reader. This manual gives the summary of how to install the SDK and what can
be found in the SDK.
Together with its compact size and trendy design and with the various features the ACR122 offers
users can experience the convenience of using ACR122 for applications such as payment, mass
transit, physical access control, time attendance, etc.
1.1 Features
• CCID Standard
• Read / Write Speed up to 424kbps
• ISO/IEC18092 (NFC) compliant
• ISO14443 Type A and B card support
• FeliCa Card Support
• Bi-Color LED
• Compact size: 98mm (L) x 65mm (W) x 12.8mm (H)
• Light Weight: 70g
• CE, FCC and RoHS compliant
• User Controllable Buzzer (optional)
• SAM Socket (optional)
1.2 Typical Applications
• Network access control
• Micro-payment
• NFC mobile tag
• Public Transportation Terminals
• Automatic Fare Collection
• Physical access control
• Customer Loyalty
• Time attendance
• Contactless public phones
• Vending machines
Page 3 of 11
ACR122U SDK User Manual
Version 1.1 April 2008