Infineon Technologies CYF0036V33L-133BGXI

Overview

CYF0036V33L-133BGXI from Cypress Semiconductor is a 36-Mbit programmable unidirectional FIFO memory IC with independent read/write ports, ×9–×36 configurable bus width, 133-MHz maximum clock rate, and dual-voltage I/O support (1.8 V/3.3 V). It enables high-speed data buffering across asynchronous clock domains in video processing pipelines and telecom line cards.

For engineers reviewing the CYF0036V33L-133BGXI datasheet, CYF0036V33L-133BGXI pinout, CYF0036V33L-133BGXI application, or CYF0036V33L-133BGXI equivalent, key selection criteria include programmable almost-full/empty flag offsets, JTAG boundary scan capability, flow-through mailbox register bypass, and 209-ball FBGA package compatibility with industrial temperature range (–40 °C to +85 °C).

Technical Context

This FIFO implements a synchronous dual-port memory architecture with separate WCLK and RCLK domains supporting clock ratios from 0.5 to 2.0. It uses internal write/read pointer logic, configurable flag generation (EF, FF, HF, PAE, PAF), and serial/parallel configuration registers for runtime reprogramming of offsets and operational modes.

The device integrates a flow-through mailbox register that bypasses FIFO sequencing for direct input-to-output data transfer, plus MARK/RT pins enabling deterministic retransmission from user-marked memory locations. All control logic-including PORTSZ[2:0] latching, LD-based memory/register access mode selection, and SPI_SEN/SPI_SI programming-is synchronized to dedicated clocks without external arbitration.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L10PF and NB3N502FG, CYF0036V33L-133BGXI delivers higher density, dual-voltage I/O, JTAG testability, and runtime reconfigurability - making it suitable for next-generation systems requiring adaptive buffer management and multi-standard interoperability.

Availability

CYF0036V33L-133BGXI is available at Aetrix Electronics and suitable for video frame buffering, telecom line card data aggregation, high-speed data acquisition, and multiprocessor inter-processor communication requiring stable component supply across extended product lifecycles.

Supply support for CYF0036V33L-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.

CYF0036V33L-133BGXI belongs to the CYF00xxV family of programmable FIFOs engineered specifically for high-bandwidth, multi-clock-domain buffering in video, networking, and test equipment applications.

FAQ

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

The CYF0036V33L-133BGXI supports a minimum clock ratio of 0.5 (RCLK = ½ × WCLK) and maximum of 2.0 (RCLK = 2 × WCLK). This range is enforced by internal pointer logic to prevent underrun/overflow during simultaneous operation, and is verified across full temperature and voltage ranges per datasheet Section 13.

How does the flow-through mailbox register differ from standard FIFO operation?

When MB is asserted, data presented on D[35:0] appears on Q[35:0] one cycle later without being stored in FIFO memory. Unlike normal FIFO behavior, this path bypasses pointer logic, flag generation, and memory array - reducing latency to 2 ns typical and enabling immediate control-message forwarding in real-time systems.

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_SEN/SPI_SI/SPI_SCLK) or parallel (LD + D[7:0]) programming. Changes take effect immediately upon register write completion, allowing dynamic adaptation to changing data rates without resetting the FIFO or interrupting data flow.

Is the 209-ball FBGA package compatible with standard reflow profiles?

Yes - the CYF0036V33L-133BGXI uses a JEDEC-standard 209-ball FBGA package (13 mm × 13 mm, 0.8 mm pitch) qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 3. Recommended reflow profile follows IPC-7095B with peak temperature ≤260 °C and time above liquidus 60–90 seconds.