AT90SP0801 Datasheet, PDF (1/12 Pages) ATMEL Corporation – Secure Signature Generation Chip

Features
• Secure Computation of Public Key Signatures
• Secure Storage and Decryption of Symmetric Keys
• On-chip Cache for Frequently Used Keys
• SMBus Communications Port
• On-board Public Key Computation Engine and Microprocessor
• Physical and Logical Security Measures to Inhibit Attacks
• 20-lead SOIC Package, 0°C to +70°C Operating Range
• 3.3V ±10% Supply Voltage
Description
The AT90SP0801 is used to perform cryptographic operations, using asymmetric pri-
vate keys stored in its internal EEPROM. An arbitrary number of private keys can be
stored externally and decrypted by the chip when required. Communication to the sys-
tem processor is via the SMBus.
Figure 1. Pin Configuration
Secure
Signature
Generation Chip
AT90SP0801
Name Description
RESET Reset Input, Active-low
SCL
SMBus Clock
SDA
SMBus Data
GND Ground
CLKIN Input Clock
VCC
Operating Voltage
TEST Do Not Connect
Summary
28-lead TSSOP
RESET 1
NC 2
NC 3
NC 4
NC 5
NC 6
SCL 7
SDA 8
NC 9
NC 10
NC 11
GND 12
NC 13
NC 14
28 NC
27 NC
26 VCC
25 NC
24 NC
23 NC
22 NC
21 NC
20 CLKIN
19 TEST
18 TEST
17 NC
16 NC
15 NC
28-lead SOIC
RESET 1
NC 2
NC 3
NC 4
NC 5
SCL 6
SDA 7
NC 8
NC 9
GND 10
20 VCC
19 NC
18 NC
17 NC
16 NC
15 CLKIN
14 TEST
13 NC
12 NC
11 TEST
Rev. 1495AS–01/02
Note: This is a summary document. A complete document is
available under NDA. For more information, please contact your
local Atmel sales office.