45 ns asynchronous SRAM for 16-bit bus designs
The Infineon/Cypress CY62136EV30LL-45BVXI is a 2 Mbit asynchronous SRAM from the MoBL series, organized as 128K x 16 bits. The wide supply range of 2.2V to 3.6V lets it sit on either a 2.5V or 3.3V logic rail without a separate regulator. The 48-VFBGA (6x8 mm) package saves board area but demands careful routing and rework planning.
128K x 16 organization — why the 16-bit bus matters
The 128K x 16 organization matches 16-bit data bus width microcontrollers and DSPs natively. A single read or write cycle transfers 16 bits, so the 45 ns access time is the bus cycle time — no need for two back-to-back byte accesses. This halves the memory bandwidth penalty versus an 8-bit-wide SRAM. For 32-bit processors that use a 16-bit external bus, two devices can be paired to form a 32-bit word.
Active lifecycle — no phase-out risk for production
There is no last-time-buy or NRND notification.
48-VFBGA — fine-pitch BGA routing and rework
The 48-VFBGA (6x8 mm) package uses a 0.75 mm ball pitch typical of fine-pitch BGA. Routing requires via-in-pad or microvias on denser boards. Rework needs a hot-air profile with bottom preheat; moisture sensitivity is MSL 3, so bake before reflow if the tray has been open past the floor-life window. The package is surface-mount only — no socket option.