EP3SL150F780I3N Altera, EP3SL150F780I3N Datasheet - Page 468

• Manufacturer Part Number: EP3SL150F780I3N
• Description: Stratix III
• Manufacturer: Altera

Stratix III Design Security Solution
Stratix III Design
Security
Solution
14–4
Stratix III Device Handbook, Volume 1
1
1
Stratix III devices are SRAM-based devices. To provide design security,
Stratix III devices require a 256-bit security key for configuration
bitstream encryption.
You can carry out secure configuration in the following three steps, as
shown in
1.
2.
3.
Program the security key into the Stratix III device.
Program the user-defined 256-bit AES keys to the Stratix III device
through the JTAG interface.
Encrypt the configuration file and store it in the external memory.
Encrypt the configuration file with the same 256-bit keys used to
program the Stratix III device. Encryption of the configuration file is
done using the Quartus II software. The encrypted configuration file
is then loaded into the external memory, such as a configuration or
flash device.
Configure the Stratix III device.
At system power-up, the external memory device sends the
encrypted configuration file to the Stratix III device.
After power-up, you will need to wait 100 ms (PORSEL = 0) or
12 ms (PORSEL = 1) before beginning the key programming to
ensure that V
As an example, here are some lithium coin-cell type batteries
used for volatile key storage purposes: BR1220 (-30° to +80°C)
and BR2477A (-40°C to +125°C). For more information on
battery specifications, refer to the
Characteristics of Stratix III Devices
Stratix III Device Handbook.
Figure
14–1:
CCBAT
is at its full rail.
DC and Switching
chapter in volume 2 of the
Altera Corporation
October 2007