Active production, 20 ns asynchronous SRAM for 3.3V buses
The Renesas 71V016SA20YGI is a 1 Mbit asynchronous SRAM organised as 64K words by 16 bits, with a 20 ns access time that sets the bus-speed floor for the memory interface.
Board-fit: 44-SOJ package and industrial temperature range
The 44-SOJ (Small Outline J-lead) package, 0.400-inch body width, is a surface-mount footprint with J-bend leads that self-align during reflow and give good visual solder-joint inspection access. Bulk packaging (tubes or trays) means the parts are not on tape-and-reel — factor that into your pick-and-place feeder setup if the line expects reeled components.
Memory interface: parallel, no clock, simple strobe timing
Asynchronous SRAM needs no clock — the address is latched by chip-enable and write-enable strobes, so the timing closure on the PCB is just propagation delay and setup/hold margins, not a clock-tree skew budget. Write cycle time matches the read access time at 20 ns, so the bus can switch between read and write at the same rate without wait states. The 64K x 16 organisation gives a 16-bit data bus in one chip — no need to pair two 8-bit-wide parts for a 16-bit system.