2.4.2 Three-Port Micro SRAM

μSRAM (RAM64×18) is the second type of SRAM, which is embedded in the IGLOO 2 FPGA fabric devices. The μSRAM block is approximately 1 KB (1152 bits). The μSRAM blocks are primarily targeted for building embedded FIFOs that can be used by any embedded fabric hosts. RAM64×18 μSRAM is a 3-port SRAM; Port A and Port B are used for read operations and Port C is used for write operations. The two read ports are independent of each other and can perform read operations in both synchronous and asynchronous modes. The write port is always synchronous.