Embedded Flash; Applications; General - SCM Microsystems @MAXX lite Reference Manual

@MAXX R
LITE EFERENCE
is the side where the label and the smartcard insertion slot can be found. Depending on the
used contactless reader and the used dual interface card, the @MAXX lite establishes a read
out distance between 2cm – 3cm. A little bit bigger antenna within the @MAXX pime A results
to a bigger read out distance up to 3.5cm.
The communication between the reader and the @MAXX with dual interface card is sensitive to
the presence of material or objects interfering with the magnetic field generated by the reader.
The presence of conductive materials like metal in the vicinity of the reader and the user token
can severally degrade the communication and even make it impossible. The magnetic field of
the reader generates Eddy or Foucault's currents in the conductive materials; the field is
literally absorbed by that kind of material.
The presence of multiple @MAXXs in the field of contactless readers also interferes with the
communication. When several @MAXXs are in the field of a contactless reader, load of the
field increases which implies that less energy is available for each of them and that the system
is detuned.
The communication between a contactless reader and the @MAXX is sensitive to the geometry
of the system {reader, @MAXX}. Parameters like the geometry and specially the relative size of
the reader and @MAXX antennas directly influence the inductive coupling and therefore the
communication.

3.5.3. Embedded Flash

Also the embedded flash memory is connected with the internal USB-hub over the flash
controller. The actual hardware design is able to support embedded flash memory up to 4GB.
Several different partitions can be created on the flash memory:
- CD-Rom partition (with Auto-run function)
- Secure partition (PIN protected)
It is also possible to upload data on the flash and to create different partitions on production
level.
3.6.

Applications

3.6.1. General

@MAXX lite is a multifunctional device, designed to interface a personal computer host
supporting PC/SC interface or CCID interface with ISO7816 smartcards in ID-000 format.
Further the device can be used as a passive NFC tag by using a dual interface smartcard. And
the @MAXX can be used as USB Mass Storage device and Micro SD-card reader.
The following graphic shows the case study and the needed infrastructure if the @MAXX is
used as a passive NFC token.
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ANUAL
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