Infineon Technologies CY62128EV30LL-45SXIT

Overview

CY62128EV30LL-45SXIT from Cypress Semiconductor is a 1-Mbit (128K × 8) CMOS static RAM with 45 ns access time, 2.2–3.6 V supply voltage, and industrial temperature range (–40 °C to +85 °C). It features dual chip enables (CE1/CE2), automatic power-down, and ultra-low standby current (1 µA typical). Used in portable embedded systems requiring battery life extension and deterministic timing, such as handheld medical monitors and industrial data loggers.

For engineers reviewing the CY62128EV30LL-45SXIT datasheet, CY62128EV30LL-45SXIT pinout, CY62128EV30LL-45SXIT application, or CY62128EV30LL-45SXIT equivalent, this page delivers verified electrical specs, STSOP-32 package mapping, functional pin roles, MoBL® low-power behavior, and direct alternatives for memory subsystem design and BOM optimization.

Technical Context

The CY62128EV30LL-45SXIT implements a fully static 128K × 8 SRAM array with complementary metal oxide semiconductor (CMOS) process technology. Its dual CE architecture (CE1 active-low, CE2 active-low) enables hierarchical memory banking and seamless expansion without external logic.

It supports three operational modes: active read/write (CE1 = LOW & CE2 = HIGH), standby (CE1 = HIGH or CE2 = LOW), and data retention (VCC ≥ 1.5 V). Output enable (OE) and write enable (WE) are fully independent, allowing precise control of bus contention and write gating with sub-45 ns timing margins.

Key Specifications

Pinout & Package

Package: 32-pin Shrunk Thin Small Outline Package (STSOP), 8.0 mm × 13.4 mm, 0.5 mm pitch, lead-free (Pb-free) compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 128K × 8 SRAM applications.

Compared with IS62WV1288BLL-45NLI and AS6C1008-45TIN, the CY62128EV30LL-45SXIT uniquely supports 2.2 V operation and dual CE architecture - critical for battery-powered expandable memory systems needing both voltage flexibility and scalable addressing.

Availability

CY62128EV30LL-45SXIT is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, automotive body control modules, and handheld test equipment requiring stable component supply across extended product lifecycles.

Supply support for CY62128EV30LL-45SXIT 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) designs high-reliability memory and programmable solutions for industrial, automotive, and consumer applications.

The CY62128EV30 series belongs to Cypress's MoBL® (More Battery Life) SRAM portfolio, engineered specifically for ultra-low-power portable electronics where extended runtime and deterministic timing are mandatory.

FAQ

What is the minimum VCC required to retain data in CY62128EV30LL-45SXIT?

The device guarantees data retention down to VCC = 1.5 V, as specified in the Data Retention Characteristics table (page 6 of Rev. *N datasheet). At this voltage, ICCDR remains ≤3 µA, and tCDR (chip deselect to data retention time) is 0 ns - meaning retention begins immediately upon entering standby mode. This enables use with supercapacitors or backup batteries that decay below 2.2 V.

Can CY62128EV30LL-45SXIT be used with a 2.5 V microcontroller without level shifters?

Yes. The device's input thresholds (VIH = 1.8 V min at VCC = 2.2–2.7 V; VIL = 0.6 V max) and output drive (VOH ≥ 2.0 V at IOH = –0.1 mA) are fully compatible with 2.5 V LVTTL and CMOS logic families. No level shifting is needed when interfacing with 2.5 V MCUs operating within the same VCC range.

How does the dual CE architecture improve system design over single CE SRAMs?

CE1 and CE2 implement a logical AND-NOT function (CE = CE1 AND NOT CE2), enabling true two-level chip select. This allows one SRAM to be selected while others remain fully isolated - eliminating bus contention in multi-memory systems and simplifying address decoding for memory-mapped peripherals without additional gates or CPLDs.

Is the STSOP-32 package of CY62128EV30LL-45SXIT pin-compatible with standard TSOP-32 or SOIC-32 footprints?

No. STSOP-32 has 0.5 mm lead pitch and 8.0 mm × 13.4 mm body size, whereas TSOP-I-32 uses 0.5 mm pitch but 11.8 mm × 13.4 mm body, and SOIC-32 uses 1.27 mm pitch. Mechanical incompatibility prevents direct replacement; PCB layout must match STSOP-32 dimensions and pad geometry per Cypress package drawing 00-61426.