1
8-bit Secure
Microcontroller
with 8K
EEPROM and
Advanced
Security
Features
AT05SC2408R
Preliminary
Rev. 1545AS11/00
Features
General
Industry-standard M68HC05 Instruction Set, including: 8 x 8 bits Unsigned Multiply
Instruction, True Bit Manipulation, Memory-mapped I/O
Operating Voltage: 3.0V 10% or 5.0V 10%
Meets GSM 11.11 & 11.12 Specifications and EMV 96 v3.1.1 Specification
5.0 MHz Maximum Internal Bus Frequency at 3.0V and 5.0V
ESD Protection to 4000V
Bond Pad Layout Conforming to ISO Standard ISO 7816/2
External Maskable Interrupt on ISO Standard I/O Port (PA0)
Power-saving WAIT and Very Low Power STOP Modes
Power-up Detection
Available as Sawn or Unsawn Wafers, or in Industry-standard Packages and Modules
EEPROM
8192 Bytes of EEPROM, including 16 Control Bytes and 48 OTP Bytes
1 to 64-byte Write/Program/Erase
1 ms Program Time, 1 ms Erase Time
10 Years Data Retention
Typically more than 1,000,000 Write/Erase Cycles
On-chip Charge Pump for EEPROM Programming, Driven by an Internal Oscillator
RAM and ROM
24576 Bytes of ROM, including 16 Bytes Reserved for Vectors
512 Bytes of RAM with Security Wipe on Selected Areas
Peripherals
Single Bidirectional I/O Line (1-bit ISO 7816/3 Standard I/O Port) with Sample Bit
Time Base Circuitry (with Preset and Maskable Interrupt Capabilities)
Watchdog Capability
CRC Module (allowing generation of Checksums (ISO/IEC 3309))
Random Number Generator
Security
Dedicated Hardware to Resist Power Analysis Attacks
Low and High Voltage Monitors
Low and High Temperature Monitors
Low Frequency Monitor
High Frequency Filter/Monitor
Illegal Access Reset
Illegal Opcode Reset
Memory Partitioning with Address Lockout Reset
Scrambling Logic
Tamper Monitor
Physical Removal of Test Mode when Testing is Complete
Development Tools
Hardware Emulation Module (for the Motorola MMDS05
Development System)
Emulation Module (AT05SCEM3R)
Software Simulator based on HIWARE's HI-WAVE
Product
Simulator Software (AT05SCRSIM)
Simulator I/O Peripheral Board (AT05SCSPBR)
Note: This is a summary document. A complete document is
available under NDA. For more information, please contact your
local Atmel sales office.
Printed on recycled paper.
Atmel Corporation 2000.
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 proper ty of
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authorized for use as critical components in life suppor t devices or systems.
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Description
The AT05SC2408R is a member of Atmel's AT05SC family
of single chip microcontrollers. Designed specifically for
embedded conditional access systems and other security
conscious systems, these devices are based on the indus-
try-standard M68HC05 low-power core and its instruction
set.
The AT05SC2408R is designed to give a high level of pro-
tection against physical and power analysis attacks, and
includes hardware features to assist in protecting against
SPA and DPA attacks. On-board CRC and RNG modules
are provided to assist in the design of high-security
applications.
On-board memory comprises 24K bytes of ROM, 512 bytes
of RAM and 8K bytes of EEPROM. The EEPROM features
64-byte write, 1 ms program time, 1 ms erase time, typi-
cally more than 1,000,000 write/erase cycles, and greater
than 10 years data retention.
Application areas for the AT05SC2408R include GSM
Mobile Phones, Finance and Set-top boxes.
Block Diagram
Note:
1. A sampling/smoothing algorithm MUST be used in conjunction with the RNG to obtain statistically random results across all
operating conditions.
PA0
PO
R
T
A
Interrupt
AT05SC CPU
4/2/1
RESET
CLK
VDD
VSS
DDRA
Security Logic
Time Base
and
Watchdog
Charge
CRC Module
Control Logic
Oscillator
Pump
EEPROM
Control
DPA Logic
Random Number
Generator (RNG)
(1)
EEPROM 8192 bytes
(including 16 control bytes
ROM 24576 bytes
(including 16 bytes for vectors)
RAM 512 bytes
and 48 OTP bytes)
1545AS11/00
HI-WAVE is a trademarks of HIWARE AG. MMDS05 is a trademark of Motorola Inc.
All other marks bearing
and/or
TM
are registered trademarks and trademarks of Atmel Corporation.
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