MoBL 1 Mbit async SRAM — 70 ns access, byte-wide bus, industrial temp
The Infineon CY62128DV30L-70SI is a 1 Mbit asynchronous SRAM from the MoBL® series, organized as 128K x 8 bits with a 70 ns access time. It operates from a 2.2 V to 3.6 V supply and communicates over a parallel interface. The part is rated for -40°C to 85°C, making it suitable for industrial control, outdoor telecom, and factory automation where the memory bus needs deterministic read-write timing without refresh overhead.
70 ns access — what it means for bus timing
The 70 ns access time defines the window from address valid to data valid on a read cycle. The 70 ns write cycle time is symmetrical, so the bus timing budget is the same for both read and write operations.
128K x 8 organization — byte-wide fit
The 128K x 8 organization presents an 8-bit data bus. This directly matches 8-bit MCUs and DSPs without external byte-lane steering logic.
Industrial temperature range and package
The -40°C to 85°C operating range qualifies the part for environments where the enclosure sees outdoor temperature swings, such as base stations, solar inverters, and motor drives. The 32-SOIC (0.445" body width) is a surface-mount footprint common in industrial PCBs; it is not a fine-pitch BGA, so hand rework and inspection are straightforward.
RoHS non-compliant — legacy solder finish
This part is marked RoHS non-compliant, meaning the terminations use a tin-lead (SnPb) finish. It cannot be used in a lead-free reflow process without a RoHS exemption or waiver. For new designs requiring RoHS compliance, a lead-free variant from the MoBL family should be selected. For legacy production lines that still run SnPb solder, this part is a direct fit.
Active lifecycle — no LTB pressure
The CY62128DV30L-70SI carries an Active lifecycle status from Infineon (Cypress). There is no last-time-buy notice, no NRND flag, and no announced end-of-life.