EP1S25F672C8N Altera, EP1S25F672C8N Datasheet - Page 49

• Manufacturer Part Number: EP1S25F672C8N
• Description: IC STRATIX FPGA 25K LE 672-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S25F672C8N

• Number Of Logic Elements/cells: 25660
• Number Of Labs/clbs: 2566
• Total Ram Bits: 1944576
• Number Of I /o: 473
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 672-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Altera Corporation
July 2005
The read and write operation of the memory is controlled by the WREN
signal, which sets the ports into either read or write modes. There is no
separate read enable (RE) signal.
Writing into RAM is controlled by both the WREN and byte enable
(byteena) signals for each port. The default value for the byteena
signal is high, in which case writing is controlled only by the WREN signal.
The byte enables are available for the ×18, ×36, and ×72 modes. In the
×144 simple dual-port mode, the two sets of byteena signals
(byteena_a and byteena_b) are combined to form the necessary
16 byte enables.
64K
32K
16K
8K
Table 2–9. M-RAM Block Configurations (True Dual-Port)
Table 2–10. Byte Enable for M-RAM Blocks
byteena[3..0]
×
×
×
×
72
[0] = 1
[1] = 1
[2] = 1
[3] = 1
[4] = 1
[5] = 1
[6] = 1
[7] = 1
9
18
36
Port A
Tables 2–10
datain ×18
[17..9]
64K × 9
[8..0]
–
–
–
–
–
–
v
v
v
v
and
2–11
32K × 18
summarize the byte selection.
Stratix Device Handbook, Volume 1
v
v
v
v
datain ×36
Notes
[26..18]
[35..27]
[17..9]
[8..0]
Port B
–
–
–
–
(1),
16K × 36
(2)
v
v
v
v
Stratix Architecture
datain ×72
[26..18]
[35..27]
[44..36]
[53..45]
[62..54]
[71..63]
[17..9]
[8..0]
8K × 72
v
v
v
v
2–35