Infineon Technologies CY62137VLL-70ZXE

Overview

CY62137VLL-70ZXE from Cypress Semiconductor is a 2-Mbit (128K × 16) CMOS static RAM with 55 ns/70 ns access time, operating across 2.7–3.6 V and supporting industrial (–40°C to +85°C) and automotive (–40°C to +125°C) temperature ranges. It features byte-wide write enable (BHE/BLE), automatic CE-controlled power-down, and TTL-compatible I/O for embedded memory expansion in portable and automotive systems.

For engineers reviewing the CY62137VLL-70ZXE datasheet, CY62137VLL-70ZXE pinout, CY62137VLL-70ZXE application, or CY62137VLL-70ZXE equivalent, key selection criteria include standby current (1–15 µA), active ICC (7–20 mA), TSOP II 44-pin package compatibility, and dual-byte write control for memory-mapped peripheral interfacing.

Technical Context

The CY62137VLL-70ZXE implements a 128K × 16 asynchronous SRAM architecture with independent high- and low-byte enables (BHE/BLE), enabling partial-word writes without read-modify-write cycles. Its CMOS design integrates automatic power-down circuitry that reduces ICC to ≤15 µA when CE is HIGH or during address inactivity.

It supports three distinct low-power states: full standby (CE HIGH), partial standby (CE LOW + BHE/BLE HIGH), and data retention (VCC ≥ 1.0 V). Input/output timing adheres to strict tHZOE (25 ns), tLZCE (10 ns), and tPD (55–70 ns) specifications under 30 pF load and 1.5 V timing thresholds.

Key Specifications

Pinout & Package

Package: 44-pin Thin Small Outline Package (TSOP Type II, forward orientation), lead-free (Pb-free) option available, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS62WV12816BLL-70NLI and R1LV52232ESBG-70CB1, the CY62137VLL-70ZXE uniquely delivers automotive-grade reliability, true independent byte enables, and dual VCC/VSS noise suppression-critical for safety-critical memory buffering in harsh environments.

Availability

CY62137VLL-70ZXE is available at Aetrix Electronics and suitable for cellular baseband subsystems, automotive instrument clusters, industrial PLC I/O modules, and portable medical monitors requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CY62137VLL-70ZXE 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 automotive, industrial, and consumer electronics, with global manufacturing and qualification infrastructure.

The CY62137V series belongs to Cypress's MoBL® (More Battery Life) SRAM portfolio, engineered specifically for ultra-low-power, fast-access memory in battery-constrained portable and automotive applications.

FAQ

What is the minimum VCC required to retain data in CY62137VLL-70ZXE?

Data retention is guaranteed down to VCC = 1.0 V, with ICCDR ≤ 7.5 µA (industrial) or ≤10 µA (automotive) at that voltage. This allows integration with backup coin cells or supercapacitors in fail-safe memory holdover circuits without external regulators.

Does CY62137VLL-70ZXE support true 8-bit operation without external logic?

Yes-dedicated BLE and BHE pins enable independent activation of I/O0–I/O7 or I/O8–I/O15 during read/write cycles. No external gates or bus transceivers are needed to perform byte-aligned memory accesses in mixed-width systems.

How does automatic power-down behave when CE is HIGH but address lines toggle?

When CE is HIGH, the device enters full standby regardless of address activity. The 99% power reduction applies immediately-no clock monitoring or internal state machine is involved. Address toggling has no effect unless CE is asserted LOW.

Is CY62137VLL-70ZXE pin-compatible with earlier CY62137VLL-55 versions?

Yes-identical 44-pin TSOP II footprint and pinout. The -70 suffix denotes 70 ns access time (vs. 55 ns for -55), but all DC and AC timing parameters scale accordingly. System-level timing margins must be re-verified, but PCB layout and firmware require no changes.