EMTG56 Datasheet, PDF (2/3 Pages) EM Microelectronic - MARIN SA – 56KB Ultra Low Cost Flash Smart Card IC

EM MICROELECTRONIC - MARIN SA
Theseus^TM Gold 56
EMTG56
Introduction
EMTG56 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.
General Purpose Non Volatile Memory (GPNVM)
The General Purpose Non Volatile Memory offers ultra
low cost implementation of traditional EEPROM based
smart card ICs using one unique memory instance for
code and data storage. This one memory solution
provides compact implementation offering at the same
time a maximum flexibility. Therefore all code size
footprint reduction will directly benefits to the application.
A simple and secure memory protection mechanism is
relying on a flexible border between code and data
space.
With up to a 56KB GPNVM on chip memories EMTG56
eradicates the need for memory bank switching either
for data and code space.
The organisation of GPNVM in 128 bytes per pages
combined with efficient page management methods are
increasing application level performances such as:
- High performances memory update
- High resistance to page tearing
- Extension of application level effective page cycling
endurance
- Simple implementation of anti-tearing mechanism
An additional GPNVM system area of 1KB is available.
This system area hosts device systems parameters.
The remaining area could be used for several purposes
such boot loader commands extension, GPNVM update
backup buffer, hardware API functions etc…
This means that reel User’s available memory is larger
than 56KB.
Serial interface
EMTG56 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. EMTG56 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. EMTG56 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
EMTG56 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 EMTG56 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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