Technical Manual ICT220 • 10/36
Copyright © 2009 Ingenico All rights reserved
The OS ensures the inter-inviolability of software applications
The OS can decide the access rights of the USER world at any time.
The MMU used by the processor enables the software's addressable space to be delimited.
A software application can only write to the memory space corresponding to the scope of its
data field. Any attempt to write or read in another space is immediately "trapped" by the
controller, generating an exception. Thus the OS keeps a track of this incident for future use
with remote diagnostics. The other software applications remain non-violated and
operational. Furthermore, the software in question cannot even self-destruct, because its
write access to code is denied.
1.2.4. Smart card readers
The ICT220 is equipped with:
• 1 main smart card reader named CAM1.
The card is always visible by the user.
• 2 positions for the SAM readers.
The CAM readers
• Main reader CAM1:
Located on the front of the terminal, it
allows easy introduction and removal of the
card; leaving the card always visible to the
user.
CAM reader features
• International standards ISO 7816.
• EMV Level 1 - 4.0.
• Smart cards and memory cards (asynchronous and synchronous).
• Cards accepted:
− asynchronous cards to standard ISO 7816 and to EMV specifications
− synchronous cards (possibility of specific drivers)
• Detection and protection against accidental removal.
• Specially designed ergonomic card introduction zone.
Conformity with ISO standards
Protocol used
Convention
− ISO 7816-1, 2, 3
− protocol T=0 & T=1
− Direct and inverse
Clock frequency
− 4.76 MHz
Protection
− Detection of short-circuit or over-consumption, VCC
− Detection of accidental removal by interruption
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