1 Mbit asynchronous SRAM – 64K x 16, 15 ns access
The CY7C1021BNL-15ZSXAT is a 1 Mbit asynchronous SRAM organized as 64K words by 16 bits, with a 15 ns access time that sets the read-cycle floor for the bus. Supply range is 4.5V to 5.5V, aligning with legacy 5 V logic families and mixed-voltage systems that still carry a 5 V rail.
44-TSOP II footprint and sourcing posture
The Tape & Reel delivery suits automated pick-and-place assembly lines. Infineon lists the CY7C1021BNL-15ZSXAT as Obsolete.
Write cycle and timing compatibility
The write cycle time matches the read access at 15 ns, so the memory can sustain back-to-back writes at the same bus rate without dead cycles. This symmetry simplifies state-machine design in cache or buffer applications where read and write latencies must match.