Infineon Technologies CY62128EV30LL-45ZAXI

Overview

CY62128EV30LL-45ZAXI from Cypress Semiconductor is a 1-Mbit (128K × 8) CMOS static RAM with 45 ns access time, 2.2–3.6 V supply range, and industrial temperature rating (–40 °C to +85 °C). It features dual chip enables (CE1/CE2), ultra-low standby current (1 µA typical), and automatic power-down when deselected-designed for battery-sensitive portable systems including handheld medical monitors and IoT edge nodes.

For engineers reviewing the CY62128EV30LL-45ZAXI datasheet, CY62128EV30LL-45ZAXI pinout, CY62128EV30LL-45ZAXI application, or CY62128EV30LL-45ZAXI equivalent, key selection criteria include its MoBL® low-power architecture, STSOP-32 package compatibility, CE/OE/WE control logic timing, and data retention capability down to 1.5 V.

Technical Context

The device implements a fully static 128K × 8 memory array with complementary metal oxide semiconductor (CMOS) process technology, enabling zero-refresh operation and deterministic timing across voltage and temperature. Its dual chip enable (CE1 HIGH / CE2 LOW = deselected) and output enable (OE) logic supports hierarchical memory expansion in multi-bank systems.

Power management relies on automatic CE-controlled power-down: when CE1 is HIGH or CE2 is LOW, internal circuitry enters sub-1 µA standby mode while retaining data at VCC ≥ 1.5 V. All I/O pins enter high-impedance state during deselect, OE HIGH, or write cycles (WE LOW with CE active).

Key Specifications

Pinout & Package

Package: 32-pin Shrunk Thin Small Outline Package (STSOP), 8.8 mm × 13.4 mm body, 0.5 mm lead pitch, RoHS-compliant, Pb-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SRAM applications.

Compared with IS62WV1288BLL-45NLI and AS6C1008-45TIN, CY62128EV30LL-45ZAXI uniquely delivers 2.2 V operation, dual CE flexibility, and 1.5 V data retention-making it the only option for long-life, wide-VCC, and fail-safe logging use cases.

Availability

CY62128EV30LL-45ZAXI is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data logging, smart meter communication modules, and automotive cabin control units requiring stable component supply across extended product lifecycles.

Supply support for CY62128EV30LL-45ZAXI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in memory, microcontrollers, and connectivity solutions for embedded systems.

CY62128EV30 belongs to the MoBL® (More Battery Life) SRAM product line, engineered specifically for ultra-low-power portable and battery-backed applications where extended operational lifetime and robust data retention are critical.

FAQ

What is the minimum V_CC required to retain data in CY62128EV30LL-45ZAXI?

The device guarantees data retention down to V_CC = 1.5 V, as specified in the Data Retention Characteristics table (page 6 of datasheet 38-05579 Rev. *N). This allows safe operation during brown-out conditions or backup battery transitions without external capacitors or supervisory circuits.

How does the dual CE (CE1/CE2) logic differ from standard single-CE SRAMs?

CY62128EV30LL-45ZAXI requires CE1 LOW AND CE2 HIGH to enable the device-this two-signal logic enables hierarchical memory mapping and eliminates bus contention in multi-chip systems. Unlike single-CE parts, it supports direct address-based bank selection without external logic gates.

Is the STSOP-32 package pinout identical to TSOP I and SOIC variants?

Yes-the pin functions are fully identical across STSOP, TSOP I, and SOIC packages per datasheet Figures 1–3. Only mechanical dimensions and thermal resistance differ. Pin 26 is NC in all three packages, and I/O0–I/O7, A0–A16, CE1/CE2, OE, WE, V_CC, and GND retain consistent placement and numbering.

Does CY62128EV30LL-45ZAXI require an external clock or refresh signal?

No-it is a fully static CMOS SRAM with no clock input and zero refresh requirement. Data remains valid indefinitely as long as V_CC is within specification and CE/OE/WE timing constraints are met during access cycles. This simplifies system design and eliminates refresh-related timing overhead.