Infineon Technologies CY7C1471BV33-133BZI

Overview

CY7C1471BV33-133BZI from Cypress Semiconductor is a 72-Mbit (2M × 36) synchronous flow-through SRAM with NoBL™ architecture, designed for high-throughput memory buffering in networking and telecom data paths. It supports 133 MHz zero-wait-state operation, delivers 6.5 ns clock-to-output delay, features synchronous byte write control via four BWx pins, and operates with 3.3 V core and 2.5/3.3 V I/O supply (VDDQ).

For engineers reviewing the CY7C1471BV33-133BZI datasheet, CY7C1471BV33-133BZI pinout, CY7C1471BV33-133BZI application, or CY7C1471BV33-133BZI equivalent, this page provides verified timing behavior, JEDEC-compliant TQFP-100 package mapping, burst mode configuration (linear/interleaved), ZZ sleep mode control, and functional alternatives for back-to-back read/write systems requiring deterministic latency.

Technical Context

The device implements a fully synchronous, rising-edge-triggered interface with registered address, control, and data inputs. All operations-including single/burst reads, self-timed writes, and chip enable decoding-are synchronized to CLK qualified by CEN, enabling precise pipeline control in high-speed bus architectures.

NoBL™ logic eliminates bus dead cycles between consecutive read and write operations by decoupling output enable timing from OE and using internal self-timed write buffers. The 2M × 36 organization supports 36-bit parallel data paths, while ADV/LD and MODE pins configure burst addressing (linear or interleaved) and address counter behavior.

Key Specifications

Pinout & Package

Package: 100-pin thin quad flat pack (TQFP), 14 mm × 20 mm × 1.4 mm body, JEDEC-standard footprint, Pb-free termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L133BG and IS61WV204836BLL-133TQLI, CY7C1471BV33-133BZI uniquely combines NoBL™ latency elimination, 2.5/3.3 V VDDQ support, and integrated JTAG - making it optimal for new designs demanding lowest jitter, mixed-voltage interoperability, and production testability.

Availability

CY7C1471BV33-133BZI is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and FPGA-based protocol acceleration requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY7C1471BV33-133BZI 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 analog/digital ICs for industrial, automotive, and communications markets.

CY7C1471BV33 belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-latency, high-frequency memory subsystems in packet-switched infrastructure where deterministic timing and burst efficiency are mandatory.

FAQ

What is the function of the MODE pin on CY7C1471BV33-133BZI?

The MODE pin is a static strap input that configures burst addressing order: tied to GND it selects linear burst sequence (0,1,2,3), while tied to VDD or left floating it selects interleaved burst (0,2,1,3). This setting is sampled at power-up and remains fixed until reset; it directly maps to standard processor burst protocols and requires no runtime control.

How does the ZZ pin behave during sleep mode, and what happens to data retention?

When ZZ is driven HIGH, the device enters a non-time-critical sleep mode with all outputs tri-stated and internal clocks gated; data is retained indefinitely as long as VDD ≥ 2.0 V and ambient temperature stays within –40°C to +85°C. The internal pull-down ensures safe LOW default if left unconnected, preventing unintended sleep entry.

Can CY7C1471BV33-133BZI operate with 2.5 V VDDQ while using 3.3 V VDD?

Yes - VDD (core supply) must be 3.3 V ±0.3 V, while VDDQ (I/O supply) is independently configurable for either 2.5 V ±0.2 V or 3.3 V ±0.3 V. This dual-voltage capability allows direct interfacing with 2.5 V FPGAs or 3.3 V ASICs without external level shifters, and both supplies must be ramped monotonically during power-up.

Is the TQFP-100 package of CY7C1471BV33-133BZI pin-compatible with CY7C1473BV33-133BZI?

No - although both use 100-pin TQFP, CY7C1471BV33 (2M × 36) and CY7C1473BV33 (4M × 18) have different pinouts: the former allocates pins for 36 data lines (DQA–DQD + DQPA–DQPD), while the latter repurposes many DQx pins as NC or removes parity lines entirely. Interchangeability requires redesign of PCB layout and signal routing.