EPF10K30E Datasheet, PDF (14/100 Pages) Altera Corporation – Embedded Programmable Logic Device

FLEX 10KE Embedded Programmable Logic Devices Data Sheet
When used as RAM, each EAB can be configured in any of the following
sizes: 256 × 16, 512 × 8, 1,024 × 4, or 2,048 × 2 (see Figure 5).
Figure 5. FLEX 10KE EAB Memory Configurations
256 × 16
512 × 8
1,024 × 4
2,048 × 2
Larger blocks of RAM are created by combining multiple EABs. For
example, two 256 × 16 RAM blocks can be combined to form a 256 × 32
block; two 512 × 8 RAM blocks can be combined to form a 512 × 16 block
(see Figure 6).
Figure 6. Examples of Combining FLEX 10KE EABs
256 × 32
256 × 16
512 × 8
512 × 16
256 × 16
512 × 8
If necessary, all EABs in a device can be cascaded to form a single RAM
block. EABs can be cascaded to form RAM blocks of up to 2,048 words
without impacting timing. The Altera software automatically combines
EABs to meet a designer’s RAM specifications.
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