10 ns asynchronous SRAM — 64K x 16, 3.0-3.6 V
The CY7C1021DV33-10VXIT: The 10 ns write cycle time (word, page) matches the read access, so the bus timing is symmetric — no extra wait states on write cycles when the controller meets the setup/hold window.
Package and board-fit — 44-SOJ, 300-mil body
Housed in a 44-lead SOJ (Small Outline J-Lead) package, 0.400-inch (10.16 mm) wide — the 300-mil SOJ footprint is a standard for 1Mbit asynchronous SRAMs, with J-bends on 1.27 mm pitch that self-center during reflow. The J-lead profile means the part sits lower than a SOP and the leads are tucked under the body, which helps with board-level clearance but makes visual inspection of solder joints trickier — a side-lit inspection or X-ray is the reliable call for production verification. Cut Tape works for prototype or low-volume builds where you don't want to commit to a full reel.
Temperature grade and environment
The 44-SOJ package's thermal impedance is modest — the J-leads conduct heat into the board pads, so a solid copper pour under the body on the top layer helps keep junction temperature within limits during sustained burst reads.
Active lifecycle — current production from Infineon
Listed as Active with no NRND or EOL flags — Infineon continues to manufacture this part, so it remains a valid BOM line for both new designs and production sustainment.