Infineon Technologies CY62148ELL-45ZSXI

Overview

CY62148ELL-45ZSXI from Infineon Technologies (formerly Cypress) is a 4-Mbit (512K × 8) high-speed CMOS static RAM with 45 ns access time, 4.5–5.5 V operation, and ultra-low standby current (2.5 µA typical). It features automatic CE-controlled power-down, TTL-compatible I/O, and is designed for battery-sensitive portable systems requiring reliable non-volatile data retention during sleep modes.

For engineers reviewing the CY62148ELL-45ZSXI datasheet, CY62148ELL-45ZSXI pinout, CY62148ELL-45ZSXI application, or CY62148ELL-45ZSXI equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), TSOP II 32-pin package compatibility, MoBL® low-power architecture, and interface timing compliance with legacy 5 V microcontrollers.

Technical Context

The device implements a full CMOS 512K × 8 SRAM array with independent address decoding, sense amplifiers, and input/output buffers. Its automatic power-down logic activates when CE is HIGH and all inputs are at valid CMOS levels, reducing ICCDR to ≤8.8 µA at VDR ≥2.0 V.

Timing is governed by strict AC parameters: tRC = 45 ns max, tAA = 45 ns max, tDOE = 22 ns max, and tHZOE = 18 ns max. The I/O pins enter high-impedance state during CE HIGH, OE HIGH, or active write (WE LOW), enabling bus sharing without external isolation.

Key Specifications

Pinout & Package

Package: 32-pin Thin Small Outline Package (TSOP II), 12 × 20 mm body, 0.5 mm lead pitch, RoHS-compliant Pb-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61LV5128AL-10TLI and CY62148EV-45ZSXI, the CY62148ELL-45ZSXI offers optimal balance of 5 V compatibility, industrial temperature support, and ultra-low standby power-making it ideal for cost-sensitive, battery-aware 5 V embedded systems where extended temp or maximum speed are not required.

Availability

CY62148ELL-45ZSXI is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, and automotive body control units requiring stable component supply across long-lifecycle production programs.

Supply support for CY62148ELL-45ZSXI 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and memory solutions for industrial, automotive, and IoT markets.

CY62148ELL-45ZSXI belongs to the MoBL® (More Battery Life™) SRAM product line, engineered specifically for ultra-low-power data buffering in portable and energy-constrained embedded systems.

FAQ

Is CY62148ELL-45ZSXI compatible with 5 V microcontrollers without level shifting?

Yes. The device features TTL-compatible input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive capability (VOH ≥ 2.4 V at –1 mA, VOL ≤ 0.4 V at 2.1 mA), enabling direct interface with standard 5 V MCUs such as the ATmega328P, PIC18F45K22, and legacy 8051 derivatives without external translators.

What is the minimum VCC required to retain data during power-down?

Data retention is guaranteed down to VCC = 2.0 V (VDR) across the full industrial temperature range (–40°C to +85°C). At this voltage, ICCDR remains ≤8.8 µA, and the device holds stored contents indefinitely as long as CE remains HIGH and no address or control lines toggle.

Does CY62148ELL-45ZSXI support true bidirectional data transfer on I/O0–I/O7?

Yes. The eight I/O pins function as a true bidirectional bus: they drive data during read cycles (when CE and OE are LOW), accept data during write cycles (when CE and WE are LOW), and enter high-impedance state during deselection or write operations-enabling seamless integration into shared-data-bus architectures without external transceivers.

Can CY62148ELL-45ZSXI be used in place of CY62148B in existing designs?

Yes. The device is explicitly pin- and function-compatible with CY62148B, including identical pinout, timing, and DC characteristics. Migration requires no PCB changes or firmware updates; however, users should verify that the 45 ns speed bin meets timing margins in their specific clock domain and trace length configuration.