Infineon Technologies CY7C1470BV25-167AXCT

Overview

CY7C1470BV25-167AXCT from Cypress Semiconductor is a 72-Mbit (2M × 36) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory subsystems in networking and telecom line cards. It operates at 167 MHz with 3.4 ns maximum access time, supports zero-wait-state burst reads/writes, and uses single 2.5 V core and I/O supply. Its 100-pin TQFP package enables dense PCB layout in packet buffering applications.

For engineers reviewing the CY7C1470BV25-167AXCT datasheet, CY7C1470BV25-167AXCT pinout, CY7C1470BV25-167AXCT application, or CY7C1470BV25-167AXCT equivalent, key selection criteria include burst order configuration (linear/interleaved), byte-write granularity across four 9-bit data groups, synchronous self-timed write timing, JTAG boundary-scan support, and compatibility with ZBT™-based system designs.

Technical Context

This SRAM implements fully registered pipelined operation: all address, control, and data signals are latched on the rising edge of CLK, with CEN qualifying clock recognition. Internal burst logic supports linear or interleaved addressing via MODE pin strap, and ADV/LD controls address counter advance or new address load.

Write operations use synchronous self-timed circuitry qualified by WE and four independent byte-write selects (BWa–BWd), enabling partial writes without external timing control. Output drivers are synchronously tri-stated during write data cycles, eliminating bus contention without requiring OE coordination.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L16PF and IS61WV204836BLL-167TQLI, CY7C1470BV25-167AXCT uniquely delivers configurable burst order, full JTAG testability, and integrated parity I/O - critical for telecom-grade reliability and flexible system integration.

Availability

CY7C1470BV25-167AXCT is available at Aetrix Electronics and suitable for packet buffering in networking switches, line card memory subsystems, backplane interface staging, and protocol accelerator caching requiring stable component supply across extended production lifecycles.

Supply support for CY7C1470BV25-167AXCT 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 solutions for industrial and communications infrastructure.

CY7C1470BV25 belongs to Cypress's NoBL™ SRAM product line, engineered specifically to replace ZBT™ devices in latency-sensitive, burst-oriented memory subsystems where deterministic zero-wait-state performance is mandatory.

FAQ

What is the function of the MODE pin on CY7C1470BV25-167AXCT?

The MODE pin is a static strap input that selects burst address order: pulled HIGH for interleaved burst (default when floating), LOW for linear burst. It must remain stable during operation and is sampled only at power-up or reset. This hardware-configurable feature eliminates firmware overhead and ensures deterministic burst behavior aligned with legacy ZBT™ or cache-line access requirements.

How does the synchronous self-timed write feature simplify system design?

The internal self-timed write circuitry eliminates the need for precise external write-pulse width control. Once WE and BWx are asserted synchronously on CLK, the device internally manages write duration and data capture timing. This removes setup/hold timing constraints on the controller side, reduces FPGA logic resources, and improves robustness across voltage/temperature variations without requiring recalibration.

Can CY7C1470BV25-167AXCT be used in place of a ZBT™ SRAM without hardware changes?

Yes - it is pin-compatible and functionally equivalent to ZBT™ devices such as IDT72V2115, sharing identical pinout, timing model, and control protocol. The only hardware consideration is confirming VDD/VDDQ = 2.5 V compliance and verifying MODE pin termination matches the required burst order, as ZBT™ devices lack this configurable option.

What is the role of the ADV/LD signal during burst operations?

ADV/LD controls the internal address counter: when HIGH and CEN is active, it advances the counter for sequential burst accesses; when LOW, it loads a new base address from A[18:0]. After deselection, ADV/LD must be driven LOW before the next access to ensure correct address initialization - a requirement for reliable burst chaining across chip-enable boundaries.