64K x 16 asynchronous SRAM with 10 ns access
The Infineon CY7C1021BNV33L-10ZXCT is a 1Mbit asynchronous SRAM organized as 64K x 16 bits. The 10 ns access and write cycle time means the part can keep up with a 100 MHz bus without wait states, provided the controller's address-to-data setup is met.
Package and temperature grade — what fits where
This limits the part to indoor, office, or controlled-environment equipment such as telecom racks, test gear, and embedded controllers — not for under-hood automotive, outdoor base stations, or industrial motor drives where -40°C to +85°C or wider is required.
This part is marked as obsolete by the manufacturer. For BOM lines that require this exact 64K x 16, 10 ns, 3.3V asynchronous SRAM in 44-TSOP II, the procurement path is through independent distribution or surplus inventory. A buyer should verify date-code consistency and marking authenticity when sourcing from the secondary market, as the part is no longer in factory production.