Active 1 Mbit async SRAM in 32-TSOP — what the 70 ns access means for bus timing
The CY62128VLL-70ZAIT is an Infineon Technologies asynchronous SRAM organized as 128K × 8 bits (1 Mbit total), in a surface-mount 32-TSOP II package. It is part of the MoBL (More Battery Life) family, designed for low-power standby in battery-backed or portable applications. The 70 ns access time means the part can present valid data on the bus within 70 ns of the address being stable — this sets the minimum read-cycle period for the memory controller. For a typical 8-bit microcontroller or CPLD bus running at 10-12 MHz, this is comfortable; at 20 MHz the bus cycle drops to 50 ns and the part cannot keep up without wait states.
Supply rail and temperature grade — 2.7-3.6 V single-rail, -40 to 85°C
The 70 ns write cycle time matches the read access, so the bus timing is symmetric — no need to stretch write cycles beyond the read period. The 32-TSOP II body width is 11.80 mm — a standard footprint shared with many 8-bit SRAM and flash parts, so the PCB layout is not exotic.
Active lifecycle — no NRND, no EOL notice on record
There is no last-time-buy window, no NRND flag, and no official successor part number published.