Infineon Technologies CY7C1472V33-167AXI

Overview

CY7C1472V33 from Infineon Technologies (formerly Cypress) is a 72-Mbit synchronous pipelined SRAM with NoBL™ architecture, configured as 2M × 36 or 4M × 18, operating at 167 MHz with zero wait states. It features fully registered I/O, byte write capability (BWa–BWb), single 3.3 V core supply, and 3.3 V/2.5 V I/O compatibility. Used in high-throughput packet buffering for network line cards.

For engineers reviewing the CY7C1472V33 datasheet, CY7C1472V33 pinout, CY7C1472V33 application, or CY7C1472V33 equivalent, key selection criteria include burst mode support (linear/interleaved), ZZ sleep mode implementation, clock-to-output timing (3.4 ns), and JEDEC-standard 100-pin TQFP package compatibility with ZBT-family designs.

Technical Context

The device implements synchronous pipelined operation using rising-edge clock-triggered input and output registers, enabling true back-to-back read/write cycles without bus latency. Its NoBL™ logic eliminates asynchronous OE dependency via internally self-timed output buffer control.

Burst addressing supports both linear and interleaved orders, controlled by the MODE pin. Write operations are synchronous and self-timed, with byte write selects (BWa, BWb) enabling granular 18-bit word writes in 4M × 18 mode or 36-bit writes in 2M × 36 mode.

Key Specifications

Pinout & Package

Package: JEDEC-standard Pb-free 100-pin TQFP (14 × 20 × 1.4 mm), RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L16PF and CY7C1470V33-167AXI, the CY7C1472V33 uniquely supports dual memory configurations (2M × 36 / 4M × 18) and includes ZZ sleep mode with documented GND tie requirement - critical for power-constrained embedded systems requiring data retention during idle periods.

Availability

CY7C1472V33 is available at Aetrix Electronics and suitable for network switching infrastructure, baseband processing units, industrial PLCs, and avionics sensor hubs requiring stable component supply and long-term obsolescence management.

Supply support for CY7C1472V33 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, automotive MCUs, and high-performance memory solutions.

This device belongs to Infineon's legacy Cypress NoBL™ SRAM product line, engineered for deterministic, high-bandwidth data buffering in telecom infrastructure and real-time embedded systems where bus latency must be eliminated.

FAQ

What is the required connection for the ZZ pin on CY7C1472V33?

The ZZ pin (Pin 64) must be externally connected to ground, as specified in the datasheet errata (Page 35). This connection activates the deep sleep mode, reducing standby current to ≤120 mA while retaining memory contents. Leaving ZZ floating or pulling high disables sleep functionality and may cause undefined behavior.

Does CY7C1472V33 support both linear and interleaved burst modes?

Yes - burst addressing order is selected by the MODE pin: logic high enables interleaved burst, logic low selects linear burst. This matches standard CPU and ASIC memory controller protocols and is validated in the Interleaved Burst Address Table and Linear Burst Address Table (Pages 11–12 of datasheet Rev. *Y).

How many byte write enable signals does CY7C1472V33 provide?

CY7C1472V33 provides two byte write enable signals: BWa and BWb. In 4M × 18 mode, they control independent 18-bit write masks; in 2M × 36 mode, they jointly enable full 36-bit writes. This differs from CY7C1474V33 (eight BW pins) and CY7C1470V33 (four BW pins).

Is CY7C1472V33 pin-compatible with ZBT SRAMs?

Yes - the datasheet explicitly states it is pin compatible and functionally equivalent to ZBT devices. This includes identical pin functions for CLK, CEN, CE1–CE3, WE, OE, ADV/LD, and DQ buses, allowing drop-in replacement in existing ZBT-based designs without layout changes.