Infineon Technologies CY7C1444AV33-1XWI

Overview

CY7C1444AV33-1XWI from Infineon (acquired Cypress) is a 36-Mb synchronous SRAM with pipelined output, 1Mb × 36 organization, 3.3V core/interface supply, -40°C to +85°C industrial temperature range, and standard parallel interface. It serves as high-speed buffer memory in network packet processors requiring deterministic latency and burst-free data access.

For engineers reviewing the CY7C1444AV33-1XWI datasheet, CY7C1444AV33-1XWI pinout, CY7C1444AV33-1XWI application, or CY7C1444AV33-1XWI equivalent, key selection criteria include pipeline timing compliance, VCCQ tolerance (2.4–3.6 V), industrial temp rating, and 36-bit wide synchronous bus interface for telecom control plane subsystems.

Technical Context

This SRAM implements a standard synchronous architecture with clocked address and control inputs, supporting single-cycle read/write operations aligned to the rising edge of CLK. It uses a pipelined output register to decouple data valid timing from clock-to-output delay, enabling stable interface timing at high frequencies.

All I/Os are LVTTL-compatible with separate VCCQ (2.4–3.6 V) for I/O voltage flexibility, while core logic operates at 3.3 V. The device lacks burst capability (burst length = 0), confirming strictly random-access behavior without auto-increment addressing.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, MSL Level 5, lead-free finish not supported.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C361024B-10BIN and IS61WV102436BLL-10BLI, the CY7C1444AV33-1XWI uniquely combines full 36-Mb density, pipelined output timing, and flexible VCCQ-making it optimal for new industrial networking designs demanding both capacity and timing robustness.

Availability

CY7C1444AV33-1XWI is available at Aetrix Electronics and suitable for network packet buffering, telecom control plane storage, and industrial protocol gateway memory requiring stable component supply across extended product lifecycles.

Supply support for CY7C1444AV33-1XWI 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 acquired Cypress Semiconductor in 2020 and now owns the SRAM product line, emphasizing reliability, automotive-grade quality, and long-term industrial support.

This device belongs to the legacy Cypress synchronous SRAM family, designed specifically for deterministic-latency memory subsystems in telecom infrastructure, test equipment, and industrial control hardware.

FAQ

Is CY7C1444AV33-1XWI pin-compatible with earlier Cypress SRAMs like CY7C1442AV33?

No. CY7C1444AV33-1XWI uses a 100-pin TQFP package with distinct pin assignments for ADSP/ADSC control signals and UB/LB byte enables, differing from the 86-pin SOJ package and control logic mapping of CY7C1442AV33. Direct replacement requires PCB redesign and timing validation.

Does this SRAM support asynchronous operation or only synchronous mode?

It supports synchronous operation only. All address, control, and data transfers are edge-triggered by CLK; there is no asynchronous read/write mode or chip-enable gating independent of clock. The architecture enforces strict clock-aligned timing for every access.

What is the meaning of "Burst Length = 0" in the datasheet?

"Burst Length = 0" indicates the device does not implement any burst addressing mode. Each memory access requires a full address setup on every clock cycle-no auto-increment or sequential addressing. This ensures predictable, non-sequential access timing critical for packet header lookups.

Is CY7C1444AV33-1XWI still in active production or obsolete?

CY7C1444AV33-1XWI is marked NRND (Not Recommended for New Designs) by Infineon, though active inventory remains available through authorized distributors. Long-term supply is managed via Aetrix's lifecycle coordination program for existing industrial programs.