ACR1251U-A
User Manual
V1.00.00
Document Name:
ACR1251U-A User Manual.doc
Prepared by: Reviewed by: Approved by:
Subject to change without prior notice
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Version History
Date By Changes Version
Vincent Zhong
2012-1-3
Lampard Ou
Kit Au
First Release
1.00.00
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Table of Contents
1.0. Introduction ...............................................................................................................4
2.0. Features .....................................................................................................................5
3.0. Architecture...............................................................................................................6
4.0. Connection with computer.......................................................................................7
4.1. plug the ACR1251U-A to a computer USB port, and the red light will be flashing................7
4.2. the driver will be auto install after plugging the reader. You should see the red box below.8
4.3. When you put a contactless card on the reader, the green LED will be on. .........................8
4.4. The card ID can be checked by some card tool software, e.g. APDU.exe, the card ID is
shown in the red box below.....................................................................................................................9
Appendix A. Parameter sheet.........................................................................................10
Appendix B. Firmware Upgrade Procedure...................................................................12
Method 1: Upgrade by “FW” Key....................................................................................................12
Method 2: Upgrade by APDU command........................................................................................12
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1.0. Introduction
The ACR1251U is a dual-interface reader (IFD and PCD) that supports contact (SAM) and
contactless (PICC) smart cards.
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2.0. Features
One standard SIM Size Connector.
ISO 7816 Parts 1-4 Compliant for Contact Smart Card Interface.
ISO 14443 Parts 1-4 Compliant for Contactless Smart Card Interface.
A built-in antenna for PICC contactless access applications.
The ACR1251U supports the following Tag Types:
o MIFARE Classic. E.g. MIFARE 1K, 4K, MINI and Ultralight.
o ISO14443-4 Type A and B.
o FELICA、TOPAZ.
T=CL emulation for MIFare 1K/4K PICCs. Multi-Blocks Transfer Mode is provided
for efficient PICC access.
High Speed (424 kbps) Communication for PICCs. #Maximum 848 kbps.
User-Controllable Peripherals. E.g. LED, Buzzer.
Microsoft CCID Compliant for SAM interfaces.
PCSC Compliant for Contact Interfaces.
USB V2.0 Interface. (12M bps)
Device Firmware Upgradeable through the USB Interface.
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3.0. Architecture
AT90SCR is for main processor for communication with PC, and control the contactless chip,
communication with SAM card and
communication between contactless tags and AT90SCR
peripherals. PN512 act as a contactless chip to perform the
For communication architecture, the protocol between ACR1251U and PC is using CCID protocol.
The communication between SAM is PCSC
Compliant
ACR1251U
PCSC SAM
Interface
USB
Interface
PSCS Layer
(CCID)
Proprietary API
ISO7816 Part 1-4 SAM
(Optional)
ACR1251
T=CL & T=1
Emulation
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SAM (Socket)
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ISO14443
Part1-4
PICC Interface
Physical
Interface
PICC (Built-in
Antenna)
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4.0. Connection with computer
4.1. plug the ACR1251U-A to a computer USB port, and the red
light will be flashing
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4.2. the driver will be auto install after plugging the reader. You
should see the red box below
4.3. When you put a contactless card on the reader, the green LED
will be on.
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4.4. The card ID can be checked by some card tool software, e.g.
APDU.exe, the card ID is shown in the red box below
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Appendix A. Parameter sheet
Device
ACR1251U Smart Card Reader/Writer
Power supply
Supply voltage................................Regulated 5V DC
Supply current................................<200mA (without smart card)
Universal Serial Bus Interface
Type............................................... USB, four lines: +5V, GND, D+ and D-
Connector ...................................... supplied together with the reader
Speed............................................. Full Speed Device, 12 Mbps
Contact Smart Card Interface
Standard ........................................ ISO 7816 1/2/3, T=0 and T=1
Supply current................................ max. 50mA
Smart card voltage......................... 5V / 3V / 1.8V
Smart card read / write speed........ 9600 – 344kbps
Short circuit protection .................. +5V / GND on all pins
CLK frequency ...............................4.8 MHz
Card connector............................... SIM Connector
Contactless Smart Card Interface
Standard...............................................ISO 14443 A & B Parts 1-4, ISO18092
Protocol................................................ ISO14443 T=CL for ISO14443-4 compliant cards and T=CL Emulation for MIFARE
Smart card read / write speed................106 kbps, 212 kbps, 424 kbps and 848 kbps
1K/4K, ISO 18092 FelCa and NFC tag
Operating Frequency for Contactless Cards Access
Operating Frequency.............................13.56 MHz
Antenna
Antenna Size..........................................65mm x 60mm
Operating distance.................................up to 50 mm (Depend on Card Type)
Built-in peripherals
Monotone buzzer
Dual-Color LED
Case
Dimensions ....................................98 mm (L) x 65 mm (W) x 12.8 mm (H)
Color .............................................. White Blue
Operating Conditions
Temperature .................................. 0 - 50 C
Humidity......................................... 10% - 80%
Cable Connector
Length....................................................1.5m (USB)
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Standard/Certifications
CE, FCC
EN300330
EN55022 & EN55024
EN55014
OS
Windows 98, ME, 2K, XP, 7
OEM
OEM-Logo
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Appendix B. Firmware Upgrade Procedure
Method 1: Upgrade by “FW” Key
Step 1: Unplug the Reader
Step 2: Open Casing
Step 3: Press the “FW, and Hold it
Step 4: Plug the Reader into PC’s USB Port
Step 5: Release the “FW” key
Step 6: Run Firmware Upgrade Application for Firmware Upgrade
Method 2: Upgrade by APDU command
Step 1: Plug the Reader into PC’s USB Port
Step 2: Run Firmware Upgrade Application for Firmware Upgrade
Step 3: Select the Reader Name and Connect, then Press “Load Patch” For firmware upgrade.
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Warning：
Any Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
—Consult the dealer or an experienced radio/TV technician for help.
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