4.4.SRAM
The board is provided with 512 kilobytes of static RAM arranged as 256k x 16 bit words.
This RAM is byte addressable, provided the host RSK supports this.
The chip select used for the RAM is CS3 which is on JA3 pin 45.
Please note the timing. This will require programming the bus controller for the Host RSK.
A[18:1]
CSn,RDn
Data
15ns
0ns
5ns
20ns
5ns
Valid
Figure 4-5: SRAM read timing
A[18:1]
CSn,WRn
Data
8ns
5ns
5ns
20ns
5ns
Valid
Figure 4-6: SRAM write timing
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