Infineon Technologies CY62137EV30LL-45BVXIT

Overview

CY62137EV30LL-45BVXIT from Cypress Semiconductor is a 2-Mbit (128 K × 16) CMOS static RAM with 45 ns access time, 2.2 V–3.6 V supply voltage range, and ultra-low standby current (max 7 µA). It supports byte-level power-down via BHE/ BLE controls and operates across industrial temperature (–40 °C to +85 °C), targeting portable memory subsystems in handheld instrumentation and low-power embedded controllers.

For engineers reviewing the CY62137EV30LL-45BVXIT datasheet, CY62137EV30LL-45BVXIT pinout, CY62137EV30LL-45BVXIT application, or CY62137EV30LL-45BVXIT equivalent, key selection criteria include verified 45 ns read/write timing, dual-byte enable interface behavior, VFBGA-48 package compatibility, and MoBL®-optimized active/standby current specs under real-world voltage and temperature conditions.

Technical Context

The device implements a fully static 128K × 16 SRAM array with independent high- and low-byte enables (BHE/BLE), enabling selective 8-bit writes without disturbing adjacent bytes. Its automatic power-down circuit reduces ICC by >90% when CE or both BHE/BLE are deasserted, with guaranteed ISB2 ≤ 7 µA at VCC = 3.6 V and TA = +85 °C.

All control inputs (CE, OE, WE, BHE, BLE) accept CMOS-level thresholds across the full 2.2–3.6 V VCC range, and output drivers meet tDOE ≤ 22 ns and tHZOE ≤ 18 ns specifications. The 48-ball VFBGA package supports fine-pitch routing for space-constrained PCBs while maintaining thermal resistance θJA = 54 °C/W.

Key Specifications

Pinout & Package

Package: 48-ball very fine-pitch ball grid array (VFBGA), 6 mm × 8 mm body, 0.5 mm pitch, JEDEC MO-276 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY62137CV30-45ZSXI, the CY62137EV30LL-45BVXIT adds industrial temperature support and VFBGA packaging for ruggedized layouts; versus IS61LV12816AL-10TLI, it trades raw speed for MoBL®-grade power efficiency and integrated power-down logic - critical for battery longevity.

Availability

CY62137EV30LL-45BVXIT is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC data buffers, and wireless IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY62137EV30LL-45BVXIT 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-performance memory and microcontroller solutions for industrial, automotive, and IoT applications with emphasis on low-power integration and reliability.

This device belongs to the MoBL® (More Battery Life) SRAM product line, engineered specifically for ultra-low-power memory subsystems in battery-operated portable electronics where standby current and voltage flexibility are primary design constraints.

FAQ

What is the maximum clock frequency supported for synchronous interface use?

The CY62137EV30LL-45BVXIT is an asynchronous SRAM and does not use a clock signal. Its timing is governed by setup/hold relationships between CE, OE, WE, and address transitions. The 45 ns access time corresponds to a maximum effective bus rate of approximately 22 MHz when interfaced with a synchronous controller using appropriate wait-state insertion.

Can BHE and BLE be tied permanently to logic HIGH to disable byte-select functionality?

Yes - tying BHE and BLE HIGH disables byte-level access and places all I/O pins (I/O0–I/O15) in high-impedance state regardless of CE status. This is a valid configuration for full-word-only operation, but prevents partial writes and forfeits the power savings of selective byte activation during mixed-mode access.

Does the 7 µA max standby current apply across the full industrial temperature range?

Yes - the datasheet specifies ISB2 ≤ 7 µA at VCC = 3.6 V and TA = +85 °C, representing the worst-case condition. At lower temperatures or voltages, standby current decreases further; typical ISB2 is 1 µA at 25 °C and 3.3 V.

Is the 48-ball VFBGA package RoHS-compliant and lead-free?

Yes - the "VXIT" suffix in CY62137EV30LL-45BVXIT explicitly denotes a lead-free, RoHS-compliant 48-ball VFBGA package per Cypress's ordering nomenclature and datasheet revision *I (November 2015).