EP4CE55F29I8L Altera, EP4CE55F29I8L Datasheet - Page 47
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EP4CE55F29I8L
Manufacturer Part Number
EP4CE55F29I8L
Description
IC CYCLONE IV FPGA 55K 780FBGA
Manufacturer
Altera
Series
CYCLONE® IV Er
Datasheets
1.EP4CGX15BN11C8N.pdf
(44 pages)
2.EP4CGX15BN11C8N.pdf
(14 pages)
3.EP4CGX15BN11C8N.pdf
(478 pages)
4.EP4CGX15BN11C8N.pdf
(10 pages)
Specifications of EP4CE55F29I8L
Number Of Logic Elements/cells
55856
Number Of Labs/clbs
3491
Total Ram Bits
2340000
Number Of I /o
374
Voltage - Supply
0.97 V ~ 1.03 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
780-FBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
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Chapter 3: Memory Blocks in Cyclone IV Devices
Memory Modes
© November 2009 Altera Corporation
Table 3–4
Table 3–4. Cyclone IV Devices M9K Block Mixed-Width Configurations (True Dual-Port Mode)
In true dual-port mode, M9K memory blocks support separate wren and rden
signals. You can save power by keeping the rden signal low (inactive) when not
reading. Read-during-write operations to the same address can either output “New
Data” at that location or “Old Data”. To choose the desired behavior, set the
Read-During-Write option to either New Data or Old Data in the RAM MegaWizard
Plug-In Manager in the Quartus II software. For more information about this
behavior, refer to
In true dual-port mode, you can access any memory location at any time from either
port A or port B. However, when accessing the same memory location from both
ports, you must avoid possible write conflicts. When you attempt to write to the same
address location from both ports at the same time, a write conflict happens. This
results in unknown data being stored to that address location. There is no conflict
resolution circuitry built into the Cyclone IV devices M9K memory blocks. You must
handle address conflicts external to the RAM block.
Figure 3–11
and read operation at port B. Registering the outputs of the RAM simply delays the q
outputs by one clock cycle.
8192
4096
2048
1024
512
1024
512
Read Port
× 16
× 18
× 1
× 2
× 4
× 8
× 9
lists the possible M9K block mixed-port width configurations.
shows true dual-port timing waveforms for the write operation at port A
8192
v
v
v
v
v
—
—
“Read-During-Write Operations” on page
× 1
4096
v
v
v
v
v
—
—
× 2
2048
v
v
v
v
v
—
—
× 4
Write Port
1024
v
v
v
v
v
—
—
× 8
512
Cyclone IV Device Handbook, Volume 1
v
v
v
v
v
—
—
× 16
3–15.
1024
v
v
—
—
—
—
—
× 9
512
v
v
—
—
—
—
—
× 18
3–11
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