Cypress Semiconductor Corp CY7C1470BV33-167BZC

Overview

CY7C1470BV33 from Cypress Semiconductor is a 72-Mbit (2M × 36) pipelined synchronous SRAM with NoBL™ architecture, designed for high-throughput memory buffering in network packet processors and telecom line cards. It supports 167 MHz bus operation with zero wait states, features fully registered inputs/outputs, 3.3 V core supply with 3.3 V/2.5 V I/O support, and clock-to-output time of 3.4 ns.

For engineers reviewing the CY7C1470BV33 datasheet, CY7C1470BV33 pinout, CY7C1470BV33 application, or CY7C1470BV33 equivalent, key selection criteria include burst mode compatibility (linear/interleaved), byte-write granularity (BWa–BWd), synchronous self-timed write control, and JEDEC-standard 100-pin TQFP packaging for board-level signal integrity and thermal management.

Technical Context

The CY7C1470BV33 implements a fully synchronous, pipelined memory interface where all address, control, and data signals are registered on the rising edge of CLK, enabling true back-to-back read/write operations without bus latency. Its NoBL™ logic eliminates asynchronous output enable timing constraints by internally self-timing output buffer control.

Burst addressing is managed via ADV/LD and MODE pins to select linear or interleaved order, while four independent byte-write enables (BWa–BWd) allow granular 9-bit writes to DQa–DQd and associated parity bits DQPa–DQPd. The device supports IEEE 1149.1 JTAG boundary scan for system-level testability.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), JEDEC-standard Pb-free, surface-mount compatible with IPC-7351B footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT 72T36160L167BFGI and ISSI IS61WV204836BLL-167TQLI, the CY7C1470BV33 uniquely combines 3.3 V/2.5 V I/O flexibility, integrated JTAG, and ZZ sleep mode - making it optimal for mixed-voltage telecom and power-aware embedded systems where testability and standby efficiency are design priorities.

Availability

CY7C1470BV33 is available at Aetrix Electronics and suitable for telecom line card buffering, network packet processor caching, base station radio unit memory, and industrial real-time controller buffer applications requiring stable component supply across extended product lifecycles.

Supply support for CY7C1470BV33 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) designs high-performance memory and programmable solutions for communications, automotive, and industrial markets.

The CY7C1470BV33 belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-latency, high-throughput buffering in packet-switched and real-time signal processing systems.

FAQ

What is the function of the ADV/LD pin in burst mode operation?

The ADV/LD pin controls the internal address counter behavior: when HIGH and CEN is active, it advances the counter for sequential burst access; when LOW, it loads a new starting address from A0–A17. This dual-mode operation enables seamless switching between linear bursts and random-access reloads without external address generation logic.

Does CY7C1470BV33 support both linear and interleaved burst orders?

Yes - burst order is selected via the MODE pin: MODE = LOW configures linear burst (incrementing addresses), MODE = HIGH selects interleaved burst (bit-reversed addressing). This matches industry-standard ZBT SRAM behavior and ensures compatibility with existing memory controllers designed for burst-oriented traffic patterns.

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

The device internally generates precise write pulse timing based on CLK and CEN, eliminating the need for the controller to meet strict external write-enable pulse width or setup/hold requirements. This reduces FPGA logic utilization and removes timing-critical paths in the write control path - accelerating RTL development and verification.

Can CY7C1470BV33 operate with a 2.5 V I/O supply while maintaining 3.3 V core voltage?

Yes - VDDQ (I/O supply) accepts 2.5 V ±0.2 V while VDD (core supply) remains at 3.3 V ±0.3 V. This dual-supply capability allows direct interfacing with 2.5 V FPGAs or ASICs without level shifters, preserving signal integrity and reducing BOM count in mixed-voltage system designs.