Infineon Technologies CY7C1470V25-167BZXI

Overview

CY7C1470V25-167BZXI from Infineon Technologies (formerly Cypress) is a 72-Mbit synchronous pipelined SRAM with NoBL™ architecture, configured as 2M × 36, operating at 167 MHz with zero wait states. It features fully registered I/O, 2.5 V core and I/O supplies, byte write capability, and JEDEC-standard Pb-free 100-pin TQFP packaging. Used in high-throughput networking line cards for packet buffering with deterministic latency.

For engineers reviewing the CY7C1470V25-167BZXI datasheet, CY7C1470V25-167BZXI pinout, CY7C1470V25-167BZXI application, or CY7C1470V25-167BZXI equivalent, key selection criteria include clock-to-output timing (3.4 ns), burst order support (linear/interleaved), synchronous self-timed writes, IEEE 1149.1 JTAG compliance, and ZZ sleep mode implementation.

Technical Context

The device implements a fully synchronous, pipelined memory interface where all address, control, and data signals are registered on the rising edge of CLK. Internal NoBL™ logic eliminates bus latency by enabling back-to-back read/write operations without wait states, sustaining one data transfer per clock cycle across burst sequences.

It supports three chip enables (CE1–CE3), clock enable (CEN), asynchronous OE, and four byte write selects (BWa–BWd) for granular 8-bit writes. Output drivers are synchronously tri-stated during write data phases to prevent bus contention, and ZZ sleep mode reduces standby current to 120 mA while preserving data.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V251L15PF and IS61WV102432BLL-167TQLI, CY7C1470V25-167BZXI uniquely delivers 167 MHz zero-wait-state operation in a 100-pin TQFP with integrated ZZ sleep and JTAG, making it optimal for space-constrained, high-reliability telecom and test platforms requiring deterministic latency and production testability.

Availability

CY7C1470V25-167BZXI is available at Aetrix Electronics and suitable for telecom line cards, high-speed test equipment, and industrial PLC backplanes requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for CY7C1470V25-167BZXI 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 maintains its high-performance memory portfolio, focusing on industrial, automotive, and communications infrastructure markets with ISO/TS 16949 and IATF 16949 certified manufacturing.

This device belongs to the NoBL™ SRAM product line, engineered specifically for deterministic-latency, high-throughput buffering in packet-switched networks, real-time instrumentation, and safety-critical control systems where bus efficiency and timing predictability are mandatory.

FAQ

What is the function of the ADV/LD pin on CY7C1470V25-167BZXI?

The ADV/LD (Address Valid/Load) pin controls address latching and burst address generation. When asserted, it loads the initial address for burst sequences and determines whether subsequent addresses increment linearly or interleaved based on the MODE pin state. It also serves as a synchronization point for address transitions in pipelined operation, ensuring deterministic timing alignment across the memory interface.

Does CY7C1470V25-167BZXI support both linear and interleaved burst modes?

Yes, burst order is selected by the MODE pin at power-up or reset. Linear mode increments addresses sequentially (e.g., 0x00, 0x01, 0x02), while interleaved mode follows a bit-reversal pattern (e.g., 0x00, 0x02, 0x01, 0x03) optimized for cache line access. Both modes are fully supported in read and write bursts and require no software configuration after initialization.

How is the ZZ (sleep) pin implemented, and what is the errata requirement?

The ZZ pin places the device in deep power-down mode, reducing current draw while retaining data. Per datasheet errata (page 36), Pin 64 (ZZ) must be externally connected to ground - it is not internally pulled down. Failure to do so prevents reliable entry into ZZ mode and may cause undefined standby behavior or increased leakage current.

Can CY7C1470V25-167BZXI operate with a 3.3 V I/O supply?

No. The device requires strict 2.5 V ±0.2 V for both VDD (core) and VDDQ (I/O). Its I/O buffers are not 3.3 V tolerant, and applying 3.3 V to VDDQ exceeds absolute maximum ratings, risking permanent damage. Level-shifting circuitry is required when interfacing with 3.3 V controllers or FPGAs.