Cypress Semiconductor Corp CY7C1480BV33-167BZI

Overview

CY7C1480BV33 from Cypress Semiconductor is a 72-Mbit pipelined synchronous SRAM configured as 2M × 36, operating at up to 167 MHz with 3.4 ns clock-to-output delay, 3.3V core supply, and 2.5V/3.3V I/O compatibility - deployed in high-speed CPU cache subsystems requiring deterministic burst access timing.

For engineers reviewing the CY7C1480BV33 datasheet, CY7C1480BV33 pinout, CY7C1480BV33 application, or CY7C1480BV33 equivalent, key selection criteria include synchronous burst mode support (Intel Pentium®-compatible or linear), registered address/data paths, byte-write granularity via BWA–BWD + BWE, and JEDEC-standard 100-pin TQFP packaging with JTAG boundary scan.

Technical Context

This SRAM implements a fully synchronous, pipelined architecture with positive-edge-triggered CLK gating all synchronous inputs (ADSP/ADSC, CE1–CE3, ADV, BWX, BWE, GW) and registered outputs. A 2-bit internal binary counter enables wraparound burst addressing, selectable via MODE pin for Intel interleaved or linear sequences.

It supports self-timed synchronous writes with byte-select control (four independent 9-bit data groups), asynchronous OE for output tri-state control, and ZZ sleep mode with data retention. All I/Os comply with JESD8-5, and core logic operates from 3.3V while I/Os tolerate 2.5V or 3.3V VDDQ.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), JEDEC-standard Pb-free, 14 × 14 mm body, 0.5 mm pitch. Pin 1 marked with dot; thermal pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1482BV33-167BZI, this part offers identical timing and package but differs in data width and burst counter behavior; versus IS61WV102436BLL-167TQLI, it adds JTAG testability, programmable burst sequencing, and active sleep control - critical for complex cache and radar subsystems.

Availability

CY7C1480BV33-167BZI is available at Aetrix Electronics and suitable for high-speed CPU cache, network packet buffering, and industrial motion control applications requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for CY7C1480BV33-167BZI 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 embedded systems, emphasizing signal integrity, timing predictability, and industrial reliability.

This device belongs to Cypress's high-speed synchronous SRAM product line, engineered specifically for deterministic-burst cache and buffering applications in computing, networking, and real-time control systems.

FAQ

What is the function of the MODE pin on CY7C1480BV33?

The MODE pin selects the burst addressing sequence: when LOW, it configures Intel Pentium®-interleaved burst (A0 toggles on each ADV pulse); when HIGH, it enables linear burst (A0 increments). This signal is sampled synchronously on the rising edge of CLK during the first cycle of a burst access and determines how the internal 2-bit counter advances addresses.

Can CY7C1480BV33 operate with 2.5V I/O while using 3.3V core supply?

Yes - VDDQ may be independently supplied at 2.5V or 3.3V while VDD remains at 3.3V. This dual-voltage capability allows direct interfacing with 2.5V FPGA I/O banks or ASIC cores without external level shifters, provided VDDQ and VSSQ are properly decoupled per the layout guidelines in AN1064.

How does the ZZ pin affect power consumption and data retention?

When ZZ is driven HIGH, the device enters a non-time-critical sleep mode with standby current ≤120 mA and full data retention. The internal pull-down ensures safe LOW default if left unconnected. Exit from sleep requires ZZ return to LOW followed by one valid clock cycle before normal operation resumes.

Is JTAG boundary scan supported on CY7C1480BV33-167BZI in the TQFP package?

Yes - IEEE 1149.1 JTAG boundary scan is fully implemented and functional in the 100-pin TQFP package. Pins TCK, TMS, TDI, and TDO are assigned to dedicated package pins (see page 7 of datasheet 001-15145 Rev. *A), enabling in-system test and interconnect validation without requiring additional test fixtures.