Infineon Technologies CY7C1472BV33-167BZC

Overview

CY7C1472BV33-167BZC from Cypress Semiconductor is a 3.3 V, 4M × 18 (72-Mbit) synchronous pipelined SRAM with NoBL™ architecture, supporting zero-wait-state 167 MHz bus operation, fully registered I/O, and byte-write capability for high-throughput memory subsystems in network packet buffers and telecom line cards.

For engineers reviewing the CY7C1472BV33-167BZC datasheet, CY7C1472BV33-167BZC pinout, CY7C1472BV33-167BZC application, or CY7C1472BV33-167BZC equivalent, key selection criteria include its 167 MHz maximum clock frequency, 3.4 ns max access time, JEDEC-standard 100-pin TQFP package, and synchronous self-timed write control with four byte-write selects (BWa–BWb).

Technical Context

The CY7C1472BV33-167BZC implements a fully synchronous, pipelined burst SRAM architecture with No Bus Latency™ logic, enabling true back-to-back read/write operations without wait states. All address, control, and data inputs are registered on the rising edge of CLK, and all outputs pass through output registers synchronized to the same clock edge.

It supports linear or interleaved burst orders, includes three synchronous chip enables (CE1/CE2/CE3), an asynchronous OE, Clock Enable (CEN) for cycle suspension, and ZZ Sleep Mode for low-power standby. Byte-write capability is implemented via two dedicated BW inputs (BWa, BWb), each controlling one 18-bit data segment (DQa/DQPa and DQb/DQPb).

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), 14 mm × 20 mm × 1.4 mm body, lead-free per JEDEC standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1472BV33-200BZC, the -167BZC trades 33 MHz bandwidth for lower power and relaxed timing; versus AS7C34098B-167JCIN, it delivers superior burst efficiency and integrated sleep control at the cost of non-interchangeable pin mapping.

Availability

CY7C1472BV33-167BZC is available at Aetrix Electronics and suitable for network packet buffers, telecom line cards, baseband processors, and radar signal processing systems requiring stable component supply and long-term industrial lifecycle support.

Supply support for CY7C1472BV33-167BZC 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) is a fabless semiconductor company specializing in high-performance memory, microcontrollers, and programmable system-on-chip solutions for industrial, automotive, and communications markets.

The CY7C147xBV33 family targets high-speed, low-latency memory subsystems in infrastructure equipment - designed specifically to replace asynchronous SRAMs and legacy ZBT devices with improved throughput, reduced timing complexity, and enhanced power management.

FAQ

Is CY7C1472BV33-167BZC pin-compatible with CY7C1470BV33-167BZI?

No. While both are 72-Mbit NoBL SRAMs, CY7C1472BV33-167BZC uses a 4M × 18 organization with BWa/BWb byte-write pins, whereas CY7C1470BV33-167BZI is 2M × 36 with BWa–BWd. Their TQFP pinouts differ significantly - especially in data bus width, parity pin allocation, and byte-select count - making them electrically and mechanically incompatible.

Does CY7C1472BV33-167BZC support 2.5 V I/O operation?

Yes. The device features dual-supply I/O (VDDQ) supporting 2.5 V nominal operation while maintaining 3.3 V core (VDD). VDDQ must be externally supplied at 2.5 V ±0.2 V, and all I/O timing parameters (e.g., tDS, tDH) are specified under those conditions per the datasheet's 2.5 V AC test conditions section.

What is the function of the ADV/LD pin during burst reads?

During burst reads, ADV/LD = HIGH causes the internal address counter to auto-increment after each clock cycle, enabling sequential access across consecutive locations. When ADV/LD = LOW, the device latches a new starting address from A[17:0] on the next rising CLK edge - allowing precise control over burst origin without external address generation logic.

Can CY7C1472BV33-167BZC operate without JTAG functionality enabled?

Yes. JTAG is disabled by default at power-up. The TAP controller remains inactive until the ENABLE instruction is loaded via TMS/TCK sequence. No external pull-ups or configuration pins are required to disable JTAG - it remains inert unless explicitly activated, posing no risk to normal memory operation or timing.