EP3C55F484I7 Altera, EP3C55F484I7 Datasheet - Page 43

• Manufacturer Part Number: EP3C55F484I7
• Description: IC CYCLONE III FPGA 55K 484 FBGA
• Manufacturer: Altera
• Series: Cyclone® IIIr

Specifications of EP3C55F484I7

• Number Of Logic Elements/cells: 55856
• Number Of Labs/clbs: 3491
• Total Ram Bits: 2396160
• Number Of I /o: 327
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Design and Compilation
© November 2008 Altera Corporation
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INIT_DONE
To check if the Cyclone III device has completed initialization and is in user mode,
you can monitor the INIT_DONE pin. A low-to-high transition in this INIT_DONE pin
indicates the end of initialization and the start of user mode. The INIT_DONE pin is an
optional pin and can be turned on in the Quartus II software through the Enable
INIT_DONE output option. The INIT_DONE pin is an open-drain output and
requires an external 10 KΩ pull up resistor to V
Auto Restart Configuration
If you would like to begin a reconfiguration to the Cyclone III device when
configuration error occurs, you can enable the auto-restart configuration after error
option in Quartus II software. In the case where configuration error occurs, the
Cyclone III device drives nSTATUS low, which resets itself internally. The Cyclone III
device releases its nSTATUS pin after a reset time-out period. The nSTATUS pin is then
pulled to V
Estimating Configuration File Size
The configuration file size could be one of your main concern in the configuration
process. To estimate the configuration file size of Cyclone III devices, you may convert
your configuration file in uncompressed raw binary file (.rbf) which provides the
approximate uncompressed configuration file sizes for Cyclone III devices. To
calculate the amount of storage space required for multiple device configuration, add
the file size of each device together. Cyclone III devices can receive a compressed
configuration bitstream and decompress this data in real-time, reducing storage
requirements and configuration time in active serial and passive serial configuration
schemes.
For more information on the uncompressed raw binary file (.rbf) sizes for Cyclone III
devices, refer to the
Cyclone III Device Handbook.
Use the data on the uncompressed raw binary file size only to estimate the file size
before design compilation. Different configuration file formats, such as Hexadecimal
(.hex) or Tabular Text File (.ttf) format, have different file sizes. However, for any
specific version of the Quartus II software, any design targeted for the same device
has the same uncompressed configuration file size. If you are using compression, the
file size can vary after each compilation because the compression ratio is dependent
on the design.
Converting Programming File
To store the Cyclone III data into configuration devices, you can convert the default
SRAM Object File (.sof) data into a different file format and program the
configuration device. You can set up the software to generate additional
programming files during compilation in the Device and Pin Options dialog box. To
convert the .sof file, on the File menu, click Convert Programming Files. The
Quartus II software supports data conversion into the following format:
■
■
■
Programmer Object File (.pof),
Hexadecimal (Intel-Format) Output File (.hexout),
Raw Binary File (.rbf),
CC
by a pull-up resistor, indicating that reconfiguration can begin.
Configuring Cyclone III Devices
CC
.
chapter in volume 1 of the
Page 43