Renesas 72V231L15PFGI

Overview

72V231L15PFGI from Integrated Device Technology (IDT) is a 3.3 V CMOS Synchronous FIFO memory with 2,048 × 9-bit depth, 10 ns read/write cycle time, and dual-clock operation supporting independent read/write clocks. It features programmable Almost-Empty/Almost-Full flags, 9-bit parallel I/O, and industrial temperature range (–40°C to +85°C), used in interprocessor communication and LAN data buffering.

For engineers reviewing the 72V231L15PFGI datasheet, 72V231L15PFGI pinout, 72V231L15PFGI application, or 72V231L15PFGI equivalent, key selection criteria include its 2,048-word depth, 10 ns timing, programmable flag offset capability, 5V-tolerant inputs, and TQFP-32 package compatibility with legacy SyncFIFO designs.

Technical Context

The 72V231L15PFGI implements a zero fall-through time, dual-ported synchronous FIFO architecture with independent WCLK/RCLK domains. Its write path uses WEN1/WEN2/LD for configuration-dependent enable control or flag offset loading, while the read path employs REN1/REN2 and OE for three-state output management.

Flag logic includes synchronized EF/FF outputs tied to RCLK/WCLK edges respectively, plus PAE/PAF flags with default offsets of Empty+7/Full−7-configurable via a four-cycle LD-controlled state machine accessing internal 8-bit offset registers.

Key Specifications

Pinout & Package

72V231L15PFGI is housed in a 32-pin plastic Thin Quad FlatPack (TQFP), 10 mm × 10 mm body, 0.8 mm pitch, lead-free (Green) compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V231L15JGI, the 72V231L15PFGI offers identical timing and feature set in a smaller, surface-mount TQFP package ideal for volume production; versus NB7L14M, it delivers proven 3.3 V parallel interfacing with integrated flow-control flags-reducing BOM count and design risk in industrial control applications.

Availability

72V231L15PFGI is available at Aetrix Electronics and suitable for interprocessor communication, LAN buffering, graphics streaming, and industrial PLC I/O expansion requiring stable component supply and long-term industrial-grade reliability.

Supply support for 72V231L15PFGI 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

Integrated Device Technology, Inc. (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions before its acquisition by Renesas Electronics in 2019.

The IDT72V2xx family-including 72V231L15PFGI-was designed specifically for low-latency, clock-domain-bridging applications in communications, computing, and industrial systems requiring robust, pin-compatible FIFO solutions.

FAQ

What is the memory organization of the 72V231L15PFGI?

The 72V231L15PFGI features a 2,048 × 9-bit synchronous FIFO memory array, providing 2,048 words of storage with 9-bit parallel data width. This organization supports standard byte-plus-parity or 9-bit control word applications without external width expansion, and is explicitly confirmed in the device's functional description and AC timing tables.

Does the 72V231L15PFGI support dual-clock operation?

Yes, the 72V231L15PFGI fully supports dual-clock operation: WCLK controls write timing and flag updates (FF/PAF), while RCLK controls read timing and flag updates (EF/PAE). The clocks may run asynchronously, coincidently, or even at different frequencies-enabling seamless bridging between mismatched clock domains in systems like FPGA-to-MCU interfaces.

How are the programmable Almost-Empty and Almost-Full flags configured on the 72V231L15PFGI?

The 72V231L15PFGI configures PAE and PAF via a dedicated LD-controlled state machine that loads four 8-bit offset registers (Empty LSB/MSB, Full LSB/MSB). When WEN2/LD is held LOW at reset, the pin enters load mode; subsequent WCLK edges write offset values sequentially. Default offsets are Empty+7 and Full−7, verified in the offset register diagram and timing figures.

Is the 72V231L15PFGI 5 V tolerant on all input pins?

Yes, the 72V231L15PFGI has 5 V-tolerant inputs on all control and data pins-including WCLK, RCLK, WEN1, REN1, D0–D8-as specified in the DC Electrical Characteristics table under "Input High Voltage (VIH)" with max rating of 5.5 V and explicit note "5V input tolerant" in the Features list.

What package type is used for the 72V231L15PFGI?

The 72V231L15PFGI uses a 32-pin plastic Thin Quad FlatPack (TQFP) package, identified by order code "PF" in IDT documentation. Pinout matches the standard SyncFIFO TQFP layout shown in Figure 2 (PR32-1), with 0.8 mm pitch and RoHS-compliant, green (lead-free) construction.