256Kbit asynchronous SRAM in 28-TSOP I — what the 70 ns access means for bus timing
The CY62256VNLL-70ZIT is a 256Kbit (32K x 8) asynchronous SRAM from Cypress's MoBL® series, organized as 32K words of 8 bits each.
Package reworkability — 28-TSOP I under the hot-air station
The Bulk packaging means the parts ship in tubes or trays, not tape-and-reel — a rework bench can pull singles without depopulating a reel.
Active lifecycle — design-in confidence for new builds
The MoBL® series is a mature, well-established asynchronous SRAM family with broad second-source coverage from multiple vendors. No pin-compatible alternative is listed on this record, but the 32K x 8, 70 ns, 28-TSOP I footprint is a common JEDEC standard — many suppliers offer drop-in equivalents.