
2–6 Reference Manual Altera Corporation
Nios Development Board Stratix II Edition May 2007
Board Components
SSRAM Chip
(U74)
U74 is a 32-bit, 2 MByte Cypress SSRAM chip. The part number is
CY7C1380C-167AC or CY7C1380D-167AXC. The chip is rated for
synchronous accesses up to 167 MHz. U74 connects to the FPGA so it can
be used by a Nios II embedded processor as general-purpose memory.
The factory-programmed Nios II reference design identifies the SSRAM
devices in its address space as a contiguous 2 MByte, 32-bit word,
zero-wait-state main memory.
Table 2–5. Dual Seven-Segment Display
FPGA Pin U8 & U9 Pin Pin Function Board Net Name
U8
L8 10 a hex_0A
L9 9 b hex_0B
M7 8 c hex_0C
M85dhex_0D
M54ehex_0E
M6 2 f hex_0F
N43ghex_0G
N5 7 dp hex_0DP
U9
K8 10 a hex_1A
K99bhex_1B
L4 8 c hex_1C
L5 5 d hex_1D
M34ehex_1E
M4 2 f hex_1F
L6 3 g hex_1G
L7 7 dp hex_1DP
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