EP2C8T144I8N Datasheet, PDF (54/470 Pages) Altera Corporation – Cyclone II Device Handbook, Volume 1

Embedded Memory
Each M4K block can implement various types of memory with or without
parity, including true dual-port, simple dual-port, and single-port RAM,
ROM, and first-in first-out (FIFO) buffers. The M4K blocks support the
following features:
■ 4,608 RAM bits
■ 250-MHz performance
■ True dual-port memory
■ Simple dual-port memory
■ Single-port memory
■ Byte enable
■ Parity bits
■ Shift register
■ FIFO buffer
■ ROM
■ Various clock modes
■ Address clock enable
1 Violating the setup or hold time on the memory block address
registers could corrupt memory contents. This applies to both
read and write operations.
Table 2–5 shows the capacity and distribution of the M4K memory blocks
in each Cyclone II device.
Table 2–5. M4K Memory Capacity & Distribution in Cyclone II Devices
Device
EP2C5
EP2C8
EP2C15
EP2C20
EP2C35
EP2C50
EP2C70
M4K Columns
2
2
2
2
3
3
5
M4K Blocks
26
36
52
52
105
129
250
Total RAM Bits
119,808
165,888
239,616
239,616
483,840
594,432
1,152,000
2–28
Cyclone II Device Handbook, Volume 1
Altera Corporation
February 2007