EMTG97-3G Datasheet, PDF (3/4 Pages) EM Microelectronic - MARIN SA – 97KB Ultra Low Cost Flash Smart Card IC

EM MICROELECTRONIC - MARIN SA
Theseus^TM Gold 97-3G
EMTG97-3G
Introduction
EMTG97-3G is a member of the Theseus family of
devices designed specifically for smart card
applications. It is software compatible with the industry
standard 8051 micro-controller, to guarantee the
maximum availability of qualified software. The
hardware implementation of the core is a modern design
not relying on microcode, with an increase of up to 4
times on a standard 8051's clocks per instruction.
Security of the family of devices makes them particularly
suitable in electronic commerce and sensitive data
areas. This is accomplished in hardware, with not only
protection against out of parameter operation of the
device, but hardware memory management to protect
against software security attacks. The CPU clock is
derived from its own internal oscillator, so preventing
attacks by clock manipulation, or extrapolating program
execution by monitoring current variations on clock
edges.
The need to support the emerging multifunction cards
requires that the device under software control can
download an application and run it when the device is in
the field embedded in a plastic card. This application
can be in the form of a script to be executed by an
interpreter or as a raw binary directly executed by the
processor. The device has to be protected against the
downloading of attack software designed to corrupt or
uncover the working or data contained in the device.
Traditionally this has been a software function, which
relies on the total integrity of the embedded software.
The EMTG97-3G implements the first level of protection
in hardware.
A simple and secure memory protection mechanism is
relying on a flexible border between code and data
space.
The General Purpose Non Volatile Memory concept
allows reaching ultra low cost implementation of
traditional 32KB EEPROM smart card ICs and more. All
your efforts to save code footprint are optimizing your
end product performances.
Best fit for code data partitioning with code size + NV
data size < 97KB.
Serial interface
EMTG97-3G offers a unique serial interface compliant
with the ISO 7816-3 specification with several modes
implemented allowing serial connections at 9600 up to
357K bits per second at 3.57MHz. EMTG97-3G
supports T=0 asynchronous half duplex character
transmission protocol, T=1 asynchronous half duplex
block transmission and a proprietary T=14 protocol used
for fast loading of Code into the OTP by the card
manufacturer. It handles minimum guard time
requirements between characters specified by ISO7816-
3 specification automatically. EMTG97-3G is designed
to be compatible with the ISO7816-3 specification
defining the characteristics of Integrated Circuit Cards
commonly referred to as smart cards.
Random Number Generator
The on chip random number generator is fully Fips140-2
compliant, providing a rapid stream of truly random
numbers. This allows use of the random numbers
generated beyond just the provision of numbers for
randomising transmissions or generating keys.
Clocks
EMTG97-3G has its own internal oscillator this allows
the core of the device to be independent of the external
clock. The processor can also be clocked much faster
than the IO CLK signal. This ensures the elimination of
fraudulent attacks involving frequency jitter and unequal
mark space ratios. The internal clock generator is
connected to the core via a divider that is under the
control of the software. This allows the Operating
System writer to control the trade off between execution
speed and power drawn by the device. Extending
battery life in hand help applications where slow
interfaces are involved.
Anti tampering
The EMTG97-3G has extensive anti tampering provision
including the monitoring of the connection to the device
to ensure that deviations beyond a prescribed criteria
result in the device being closed down before its
operating conditions are violated.
On chip voltage regulators
Several on chip regulators isolate the various elements
of the device from variations and fluctuations in the
supply voltage. This allows elements to be characterised
precisely, as they operate at one fixed voltage, which in
turn maximises the endurance of the device.
Technology
This product is using superior Flash memory SuperFlash
Technology licensed from SST and SuperFlash is a
registered trademark of SST (Silicon Storage
Technology Inc.).
Copyright © 2005, EM Microelectronic-Marin SA
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