Infineon Technologies CY7C1440AV33-167BZCT

Overview

CY7C1440AV33-167BZCT from Cypress Semiconductor is a 36-Mbit pipelined synchronous SRAM configured as 1 M × 36, operating at 167 MHz with 3.3 V core and 2.5/3.3 V I/O supplies, supporting high-speed burst reads/writes in networking line cards and telecom baseband processing.

For engineers reviewing the CY7C1440AV33-167BZCT datasheet, CY7C1440AV33-167BZCT pinout, CY7C1440AV33-167BZCT application, or CY7C1440AV33-167BZCT equivalent, key selection criteria include pipelined clock-to-output timing (3.4 ns), JEDEC JESD8-5 I/O compatibility, synchronous self-timed write support, and 100-pin TQFP package with ZZ sleep mode.

Technical Context

This SRAM implements a two-bit internal burst counter controlled by ADV, ADSP, and ADSC signals to generate interleaved or linear address sequences. All address, data, and control inputs (CE1/CE2/CE3, BWx, GW, BWE) are registered on the rising edge of CLK, enabling deterministic pipelined operation.

It supports byte-selectable writes via eight synchronous BWx inputs qualified by BWE and global write via GW; OE is asynchronous for output tri-state control, while ZZ enables low-power sleep mode independent of clock activity.

Key Specifications

Pinout & Package

The CY7C1440AV33-167BZCT is housed in a Pb-free 100-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, thermally enhanced for sustained 167 MHz operation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C3364B-167JCIN and IS61WV102436B-167TQLI, the CY7C1440AV33-167BZCT uniquely delivers configurable burst addressing, dual-voltage I/O, and hardware sleep mode - critical for telecom and radar systems demanding both performance and power efficiency.

Availability

CY7C1440AV33-167BZCT is available at Aetrix Electronics and suitable for telecom line cards, network packet buffers, baseband processing units, and radar signal processors requiring stable component supply across extended product lifecycles.

Supply support for CY7C1440AV33-167BZCT 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, industrial, and automotive markets.

The CY7C144xAV33 family targets high-speed synchronous data buffering in infrastructure equipment where deterministic timing, burst efficiency, and low-power idle states are mandatory.

FAQ

What is the function of the MODE pin on CY7C1440AV33-167BZCT?

The MODE pin selects burst address sequence behavior: when floating or tied to VDD, it enables Intel Pentium-style interleaved addressing; when tied to GND, it enables linear burst addressing. This pin is sampled at power-up and remains static during operation, directly configuring the internal two-bit burst counter's increment pattern.

Can CY7C1440AV33-167BZCT operate with 2.5 V I/O while using 3.3 V core?

Yes - the device supports independent 3.3 V core (VDD) and 2.5 V or 3.3 V I/O (VDDQ) supplies. VDDQ must be stable before VDD ramp-up, and both supplies must meet JEDEC JESD8-5 voltage tolerance specs. This dual-supply design enables direct interfacing with 2.5 V FPGAs or ASICs without external level shifters.

How does the ZZ (sleep) mode affect data retention and wake-up timing?

In ZZ mode, current drops to ≤120 mA standby level while retaining full memory contents. Wake-up is asynchronous: asserting ZZ HIGH resumes normal operation after a fixed 20 ns tZZD delay, with first valid output appearing within tACE (3.4 ns) of the next CLK edge - no reinitialization or refresh is required.

Is JTAG boundary scan enabled by default on CY7C1440AV33-167BZCT?

Yes - IEEE 1149.1 boundary scan is factory-enabled and active upon power-up. The TAP controller responds to standard JTAG instructions (SAMPLE/PRELOAD, EXTEST, IDCODE) using TCK, TMS, TDI, and TDO pins. Disabling requires writing a specific instruction to the BYPASS register, which is not recommended for production test environments.