Infineon Technologies CYF0072V33L-133BGXI

Overview

CYF0072V33L-133BGXI from Cypress Semiconductor is a 72-Mbit programmable first-in-first-out (FIFO) memory IC with independent 36-bit read/write ports, 133-MHz clock operation, LVCMOS 3.3 V I/O support, and configurable flag offsets for buffering high-speed data across asynchronous clock domains in networking and video systems.

For engineers reviewing the CYF0072V33L-133BGXI datasheet, CYF0072V33L-133BGXI pinout, CYF0072V33L-133BGXI application, or CYF0072V33L-133BGXI equivalent, key selection criteria include unidirectional ×36 bus width, JTAG boundary scan capability, programmable almost-empty/almost-full flags, and dual reset (MRS/PRS) for system-level synchronization and configuration retention.

Technical Context

The device implements a synchronous, unidirectional FIFO architecture with physically separate read and write address pointers, enabling simultaneous operations at up to 133 MHz with clock ratio tolerance of 0.5–2.0 between RCLK and WCLK. Memory organization is user-selectable via PORTSZ[2:0] pins across ×9 to ×36 word widths.

It integrates serial (SPI) and parallel programming interfaces for configuration registers, supports flow-through mailbox bypass, mark-and-retransmit functionality via MARK/RT pins, and provides DVal-synchronized output validity signaling. All control logic-including flag generation, pointer management, and reset sequencing-is implemented in dedicated on-die logic blocks surrounding the 72-Mbit SRAM array.

Key Specifications

Pinout & Package

Package: 209-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 13 mm, 0.8 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable FIFO applications.

Compared with IDT72V2115L10PF and NB7L14M, CYF0072V33L-133BGXI uniquely delivers 72-Mbit depth, hardware-assisted retransmit, and JTAG testability-making it the only viable option for high-reliability, multi-clock-domain systems requiring field-updatable flag thresholds and deterministic replay.

Availability

CYF0072V33L-133BGXI is available at Aetrix Electronics and suitable for high-speed network packet buffering, video frame synchronization, and industrial data acquisition requiring stable component supply across extended product lifecycles.

Supply support for CYF0072V33L-133BGXI 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 logic solutions for industrial, automotive, and communications infrastructure markets.

CYF0072V33L-133BGXI belongs to the CYF00xxV family of programmable FIFOs engineered specifically for deterministic, low-latency data buffering across asynchronous clock domains in telecom, test equipment, and imaging systems.

FAQ

What is the maximum supported clock ratio between read and write clocks?

The CYF0072V33L-133BGXI supports a clock ratio range of 0.5 to 2.0 between RCLK and WCLK. This means the slower clock must be no less than half and no more than double the frequency of the faster clock. The device uses asynchronous pointer logic to maintain data integrity across this range without external handshaking.

How does the flow-through mailbox register operate?

When the MB pin is asserted, data presented on D[35:0] passes directly to Q[35:0] on the next RCLK edge, bypassing FIFO memory storage. This mode is used for urgent control words or status updates that require zero-latency delivery, independent of FIFO fill level or pointer state.

Can the almost-empty and almost-full flag offsets be changed during operation?

Yes-flag offsets are stored in configuration registers accessible via serial (SPI) or parallel programming modes. Offsets can be updated dynamically without resetting the FIFO or interrupting data flow, enabling adaptive buffer management based on real-time system load or error conditions.

Is JTAG boundary scan supported on this device?

Yes-the CYF0072V33L-133BGXI includes a fully compliant IEEE 1149.1 JTAG port (TCK/TMS/TDI/TDO) for boundary scan testing. It supports instruction register access, data register scanning, and IDCODE readback, enabling automated PCB interconnect verification during manufacturing.