EP3C80F484C6N EP3C80F484C6N EP3SL50F780C4N EP4CE10F17I7N
EP4CE55F23I7N EP4CE6F17C9LN EP4CE75U19I7N Programmable Logic
Configuration
Cyclone III device family uses SRAM cells to store configuration
data. Configuration data is downloaded to Cyclone III device family
each time the device powers up. Low-cost configuration options
include the Altera EPCS family serial flash devices as well as
commodity parallel flash configuration options. These options
provide the flexibility for general-purpose applications and the
ability to meet specific configuration and wake-up time
requirements of the applications. Cyclone III device family
supports the AS, PS, FPP, and JTAG configuration schemes. The AP
configuration scheme is only supported in Cyclone III devices.
f For more information about configuration, refer to the Configuration, Design Security, and Remote System Upgrades in the
Cyclone III Device Family chapter.
Remote System Upgrades
Cyclone III device family offers remote system upgrade without an
external controller. The remote system upgrade capability in
Cyclone III device family allows system upgrades from a remote
location. Soft logic (either the Nios II embedded processor or user
logic) implemented in Cyclone III device family can download a new
configuration image from a remote location, store it in
configuration memory, and direct the dedicated remote system
upgrade circuitry to start a reconfiguration cycle. The dedicated
circuitry performs error detection during and after the
configuration process, and can recover from an error condition by
reverting to a safe configuration image. The dedicated circuitry
also provides error status information. Cyclone III devices support
remote system upgrade in the AS and AP configuration scheme.
Cyclone III LS devices support remote system upgrade in the AS
configuration scheme only.
f For more information, refer to the Configuration, Design Security, and Remote System Upgrades in the
Cyclone III Device Family chapter.
Design Security (Cyclone III LS Devices Only)
Cyclone III LS devices offer design security features which play a
vital role in the large and critical designs in the competitive
military and commercial environments. Equipped with the
configuration bit stream encryption and anti-tamper features,
Cyclone III LS devices protect your designs from copying, reverse
engineering and tampering. The configuration security of Cyclone
III LS devices uses AES with 256-bit security key.
