v1.1
6-17
SRAM and FIFO Memories in Actel’s Low-Power Flash Devices
Table 6-10 RAM and FIFO Memory Block Consumption
Depth
256
512
1,024
2,048
4,096
8,192
16,384
32,768
65,536
Two-Port
Dual-Port
Wi
dth
1 Number Block
1
2
4
8
16 × 1
Configuration
Any
1,024 × 4
2,048 × 2
4,096 × 1
2 × (4,096 × 1)
Cascade Deep
4 × (4,096 × 1)
Cascade Deep
8 × (4,096 × 1)
Cascade Deep
16 × (4,096 × 1)
Cascade Deep
2 Number Block
1
2
4
8
16
32
Configuration
Any
1,024×4
2,048 × 2
2 × (4,096 × 1)
Cascaded Wide
4 × (4,096 × 1)
Cascaded 2 Deep
and 2 Wide
8 × (4,096 × 1)
Cascaded 4 Deep
and 2 Wide
16 × (4,096 × 1)
Cascaded 8 Deep
and 2 Wide
32 × (4,096 × 1)
Cascaded 16 Deep
and 2 Wide
4 Number Block
1
2
4
8
16
32
64
Configuration
Any
1,024 × 4
2 × (2,048 × 2)
Cascaded Wide
4 × (4,096 × 1)
Cascaded Wide
4 × (4,096 × 1)
Cascaded 2 Deep
and 4 Wide
16 × (4,096 × 1)
Cascaded 4 Deep
and 4 Wide
32 × (4,096 × 1)
Cascaded 8 Deep
and 4 Wide
64 × (4,096 × 1)
Cascaded 16 Deep
and 4 Wide
8 Number Block
1
2
4
8
16
32
64
Configuration
Any
2 × (1,024 × 4)
Cascaded Wide
4 × (2,048 × 2)
Cascaded Wide
8 × (4,096 × 1)
Cascaded Wide
16 × (4,096 × 1)
Cascaded 2 Deep
and 8 Wide
32 × (4,096 × 1)
Cascaded 4 Deep
and 8 Wide
64 × (4,096 × 1)
Cascaded 8 Deep
and 8 Wide
9 Number Block
1
2
4
8
16
32
Configuration
Any
2 × (512 × 9)
Cascaded Deep
4 × (512 × 9)
Cascaded Deep
8 × (512 × 9)
Cascaded Deep
16 × (512 × 9)
Cascaded Deep
32 × (512 × 9)
Cascaded Deep
16 Number Block
1
4
8
16
32
64
Configuration
256 × 18
4 × (1,024 × 4)
Cascaded Wide
8 × (2,048 × 2)
Cascaded Wide
16 × (4,096 × 1)
Cascaded Wide
32 × (4,096 × 1)
Cascaded 2 Deep
and 16 Wide
32 × (4,096 × 1)
Cascaded 4 Deep
and 16 Wide
18 Number Block
1
2
4
8
18
32
Configuration
256 × 8
2 × (512 × 9)
Cascaded Wide
2 × (512 × 9)
Cascaded Wide
4 × (512 × 9)
Cascaded 2 Deep
and 2 Wide
8 × (512 × 9)
Cascaded 4 Deep
and 2 Wide
16 × (512 × 9)
Cascaded 8 Deep
and 2 Wide
16 × (512 × 9)
Cascaded 16 Deep
and 2 Wide
32 Number Block
2
4
8
16
32
64
Configuration
2 × (256 × 18)
Cascaded Wide
4 × (512 × 9)
Cascaded Wide
4 × (512 × 9)
Cascaded Wide
8 × (1,024 × 4)
Cascaded Wide
16 × (2,048 × 2)
Cascaded Wide
32 × (4,096 × 1)
Cascaded Wide
64 × (4,096 × 1)
Cascaded 2 Deep
and 32 Wide
36 Number Block
2
4
8
16
32
Configuration
2 × (256 × 18)
Cascaded Wide
4 × (512 × 9)
Cascaded Wide
4 × (512 × 9)
Cascaded Wide
4 × (512 × 9)
Cascaded 2 Deep
and 4 Wide
16 × (512 × 9)
Cascaded 4 Deep
and 4 Wide
16 × (512 × 9)
Cascaded 8 Deep
and 4 Wide
64 Number Block
4
8
16
32
64
Configuration
4 × (256 × 18)
Cascaded Wide
8 × (512 × 9)
Cascaded Wide
8 × (512 × 9)
Cascaded Wide
16 × (1,024 × 4)
Cascaded Wide
32 × (2,048 × 2)
Cascaded Wide
64 × (4,096 × 1)
Cascaded Wide
72 Number Block
4
8
16
32
Configuration
4 × (256 × 18)
Cascaded Wide
8 × (512 × 9)
Cascaded Wide
8 × (512 × 9)
Cascaded Wide
16 × (512 × 9)
Cascaded Wide
16 × (512 × 9)
Cascaded 4 Deep
and 8 Wide
Note:
Memory configurations represented by grayed cells are not supported.