1
Features
General
High-performance, Low-power Secure AVR
RISC Architecture
133 Powerful Instructions (Most Executed in a Single Clock Cycle)
Linear Addressing of up to 8M Bytes of Code and up to 16M Bytes of Data
Low-power Idle and Power-down Modes
Bond Pad Locations Conforming to ISO 7816-2
ESD Protection to 6000V
Operating Ranges: from 2.7V to 5.5V
Compliant with GSM, 3GPP and EMV 2000 Specifications; PC Industry Compatible
Available in Wafers, Modules and Industry-standard Packages
Memory
32K Bytes of Flash Program Memory
32K Bytes of EEPROM, Including 128-byte OTP Area and 384-byte Bit-addressable Area
1 to 128-byte Program/Erase
2 ms Program, 2 ms Erase
Typically 1,000,000 Write/Erase Cycles
10 Years Data Retention
3K Bytes of RAM
Peripherals
ISO 7816 Controller
Up to 625 kbs at 5 MHz
Compliant with T = 0 and T = 1 Protocols
Two I/O Ports (Configurable to Support Communication Protocols Including 2-wire
Interfaces)
Serial Peripheral Interface (SPI) Controller
Programmable Internal Oscillator (Up to 16 MHz on ROM)
Two 16-bit Timers
Random Number Generator (RNG)
2-level, 8-vector Interrupt Controller
Hardware DES and Triple DES DPA Resistant
Checksum Accelerator
CRC 16 Engine (Compliant with ISO/IEC 3309)
8-bit GF(2
n
) Multiplier
Crypto-coprocessor (Pre-programmed Functions for Cryptography and Authentication
Including RSA, DSA, Key Generation, ECC)
Security
Dedicated Hardware for Protection Against SPA/DPA Attacks
Advanced Protection Against Physical Attack, Including Active Shield
Environmental Protection Systems
Voltage Monitor
Frequency Monitor
Temperature Monitor
Secure Memory Management/Access Protection (Supervisor Mode)
Development Tools
Hardware/Software Development Support on Voyager Emulation Platform (ATV1)
IAR Systems C-Spy
Debugger
Software Libraries and Application Notes
Secure
Microcontroller
for Smart Cards
AT90SC3232CS
Preliminary
Rev. 1572BSSMIC10/02
Note: This is a summary document. A complete document will be
available under NDA. For more information, please contact your
local Atmel sales office.
2
AT90SC3232CS
1572BSSMIC10/02
Description
The AT90SC3232CS is a low-power, high-performance, 8-/16-bit microcontroller, based
on the secure AVR RISC architecture, with Flash program memory, EEPROM data
memory and a crypto-coprocessor. By executing powerful instructions in a single clock
cycle, the AT90SC3232CS achieves throughputs close to 1 MIPS per MHz. Its Harvard
architecture includes 32 general-purpose working registers directly connected to the
ALU, allowing two independent registers to be accessed in one single instruction exe-
cuted in one clock cycle.
The AT90SC3232CS uses a new secure AVR CPU that allows the linear addressing of
up to 8M bytes of code and up to 16M bytes of data, and also provides a number of new
functional and security features.
The AT90SC3232CS includes 64K bytes of Atmel's high density, non volatile memory.
The on-chip Flash allows the program memory to be reprogrammed in-system and
locked securely. This technology combined with the versatile CPU on a monolithic chip
provides a highly flexible and cost-effective solution to many smart card applications.
The crypto engine featured in the AT90SC series is the SC16, a 16-bit processor dedi-
cated to performing fast encryption and authentication functions.
Additional security features include power, frequency and temperature protection logic,
logical scrambling on program data and addresses, power analysis countermeasures,
and memory accesses controlled by a supervisor mode.
A block diagram of the AT90SC3232CS is shown in Figure 1.
3
AT90SC3232CS
1572BSSMIC10/02
Figure 1. The AT90SC3232CS AVR RISC Architecture
Instruction
Decoder
Flash Program
Memory
Instruction
Register
Access
Control
General
Purpose
Registers
X
Y
Z
Status
Register
ROM
SC16
Crypto-
Coprocessor
RAM
Data Memory
Interrupt
Unit
ISO 7816
I/O Port 0
Timer
Control
Lines
ALU
EEPROM
User Memory
OTP
PC
Secure
Control
V
CC
GND
CLK
Access
Control
IN/OUT0
Data Bus
8-bit
RNG
16
16
16
8
8
8
IN/OUT1
SS
DES
DPA Counter
measures
Reset
Circuit
RST
ISO 7816
I/O Port 1
ISO 7816
Controller
CRC and
Checksum
Accelerator
SCK
SPI
Controller
MISO
MOSI
Printed on recycled paper.
Atmel Corporation 2002.
Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty
which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors
which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does
not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted
by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical
components in life support devices or systems.
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1572BSSMIC10/02
xM
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