20 ns asynchronous SRAM for industrial memory maps
The CY7C1041CV33-20ZSXET: Packaged in a 44-TSOP II (10.16 mm width), it is a surface-mount memory for designs needing fast, simple bus attachment without refresh overhead.
Bus timing and the 20 ns window
A 20 ns access time means the memory controller sees valid data on the bus within 20 ns of asserting the address.
Supply rail tolerance — 3.3 V only, no 5 V
If your board carries a 5V-only bus or a 3.3V rail that droops below 3.0V during brownout, this SRAM will not hold data reliably. The 256K x 16 organization ties the 16-bit data bus to a 16-bit MCU or two 8-bit devices with byte-lane control; the parallel interface is straightforward — no serial protocol overhead.