NXP Semiconductors MIFARE SAM AV3 User manual

UM11316
MIFARE SAM AV3 evaluation board
Rev. 1.1 — 12 March 2020 User manual
586311 COMPANY PUBLIC
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Keywords MIFARE SAM AV3, demo board, LPC, X-mode, S-mode, I2C, SPI, CLRC663
Abstract This manual shows how to operate the MIFARE SAM AV3 demo board, how
to jumper the interfaces and how to use the demo board with all different
mode configurations of MIFARE SAM AV3

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
COMPANY PUBLIC 586311 2 / 31
Revision history
Rev Date Description
1.1 20200312 Added section about use with RFIDDiscover, added known Limitations, corrected typos
1.0 20200108 Initial version

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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1 Introduction
Figure 1. MIFARE SAM AV3 evaluation board
The MIFARE SAM AV3 offers various different modes of operation, interfaces and other
configuration settings. The MIFARE SAM AV3 evaluation board shall help to evaluate
these modes all on a single Arduino shield shaped board, in combination with any MCU.
Additionally, the board features a CLRC663 NFC frontend for quick and easy design
development and evaluation.
1.1 Scope
The scope of this document is to give an overview of all interfacing options, jumper
settings and usage possibilities that the MIFARE SAM AV3 evaluation board offers.
1.2 Abbreviations
Table 1. Abbreviations
I2C Inter-Integrated Circuit
MCU Microcontroller Unit
NFC Near Field Communication
PCB Printed-Circuit Board
SAM Secure Access Module
SPI Serial Peripheral Interface
USB Universal Serial Bus

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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2 Schematics
2.1 Power management
Figure 2. MIFARE SAM AV3 evaluation board - Power management
The MIFARE SAM AV3 evaluation board is equipped with a mini-USB port to power the
system. The port is only used for power, it is not used for any communication/debug etc.
The entire board can be powered by either the USB port or the 5 V line on the Arduino
header. The power LED signalizes the properly powered state of the board.
2.2 CLRC663
Figure 3. MIFARE SAM AV3 evaluation board - CLRC663

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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Figure 4. MIFARE SAM AV3 evaluation board - Antenna matching
The MIFARE SAM AV3 evaluation board also has a CLRC663 contactless frontend
directly built-in, which can be interfaced via SPI, and I2C. All Interfacing options are
available and can be configured by jumpers. The SPI-Interface is directly connected to
the Arduino® header, the I2C interfaces are meant to be used by MIFARE SAM AV3 for
X-mode. Detailed instructions for the jumper settings can be found in section Jumper
setting
2.3 Arduino® R3 header
The MIFARE SAM AV3 evaluation board is equipped with a Arduino® R3 compatible
header. The evaluation board can be fully powered with the 5 V line from this header.
All other voltages are directly generated on the board out of this 5 V line. The header
also uses the SPI interface, which can be connected to the CLRC663 host interface for
direct communication. For SAM communication, the user can choose between 2 I2C
interfaces: The default one on IOH1 (called I2C1), as well as an alternative pinning on
AD1 (called I2C2). IO4 and IO5 are used for the CLRC663 PDOWN and IRQ, and IO6
can be jumpered to be the MIFARE SAM AV3 VDD.

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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Figure 5. MIFARE SAM AV3 evaluation board - Arduino header
After the I2C interface selection jumper from the MCU, the I2C interface is forced to 3V3.
This way, either 5 V or 3V3 MCU's can be used. As the MIFARE SAM AV3 is powered
by 3V3, the I2C interface voltage on SDA must not exceed this value. The SCL line of
this interface is shifted down to 1V8 directly on the MIFARE SAM Av3 add-on board. The
reason for this additional shifting is described in the datasheet
Figure 6. MIFARE SAM AV3 evaluation board - I2C interface selection

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
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2.4 MIFARE SAM AV3
Figure 7. MIFARE SAM AV3 evaluation board - MIFARE SAM AV3
The MIFARE SAM AV3 can be accessed by either its I2C_Slave(MCU_I2C_xxx) interface
from the host MCU, or the ISO7816 interface via the additional 16-pin header CN5. This
header is pin compatible to the Ashling IN_CLA7816 PCBs, and can be used with the
SUBD-15 adapter cable.
2.4.1 Add-on board
The MIFARE SAM AV3 itself is placed on an add-on board, to be able to easily
exchange the MIFARE SAM AV3 in case it has been misconfigured. The pullups for the
MCU_I2C_xxx interface, as well as the voltage level divider for the MCU_I2C_SCL is
directly placed on the add-on board.
Note: The value for R3 is chosen as 22k, because of the internal resistance of the TP2
pin being ~32k, which results in R4 || Rint = ~24k.

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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Figure 8. MIFARE SAM AV3 evaluation board - MIFARE SAM AV3 add-on board

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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3 Jumper Setting
Figure 9. MIFARE SAM AV3 evaluation board - MIFARE SAM AV3
The MIFARE SAM AV3 evaluation board comes with 3 different colors of Jumpers:
•Green: Configuration of RC663 interfaces
•Yellow: MCU_I2C interface selection
•Red: MIFARE SAM AV3 configuration
3.1 CLRC663 Interface Selection
The CLRC663 NFC reader frontend generally has 2 interfaces: the Host interface and the
SAM interface.
The Host interface can be configured to SPI or I2C using the IFSEL0/1 pins of the
CLRC663. This is done with JP5 and JP6.

NXP Semiconductors UM11316
MIFARE SAM AV3 evaluation board
UM11316 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 1.1 — 12 March 2020
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Figure 10. Host Interface Selection - top: I2C, bottom: SPI
3.1.1 SPI
In case SPI is selected, the jumpers on the SPI header need to be inserted, to connect
the SPI interface from the MCU to the CLRC663. This setting is intended to use the
MIFARE SAM AV3 in S-mode, or in an S/X mixed variant.
Figure 11. SPI header