1 Mbit asynchronous SRAM with 20 ns access time
The Renesas 71V016SA20BFI is a 1 Mbit asynchronous SRAM organized as 64K x 16 bits. The 20 ns access time sets the read-cycle budget for the host controller — at 50 MHz bus speed you have one clock edge to latch data after address, so the 20 ns window needs clean signal integrity and matched trace lengths on the data bus. This part is suited for industrial control, telecom line cards, and embedded systems that need fast scratchpad memory without the refresh overhead of DRAM.