Renesas 72V215L10TFG

Overview

72V215L10TFG from Integrated Device Technology (IDT) is a 3.3 V, 512 × 18-bit synchronous FIFO memory IC with dual-clock operation, 10 ns read/write cycle time, and industrial temperature support (–40°C to +85°C). It features programmable Almost-Empty/Almost-Full flags, First Word Fall-Through (FWFT) or IDT Standard timing modes, and is packaged in a 64-pin TQFP for use in LAN controllers, interprocessor communication buffers, and optical disk controller data pipelines.

For engineers reviewing the 72V215L10TFG datasheet, 72V215L10TFG pinout, 72V215L10TFG application, or 72V215L10TFG equivalent, key selection criteria include its 512-word depth, 18-bit bus width, 5V-tolerant inputs, single/double-register buffered flag options, and configurable asynchronous/synchronous flag timing - all critical for deterministic buffering in mixed-voltage, multi-clock domain systems.

Technical Context

The 72V215L10TFG implements a clocked, dual-port FIFO architecture with independent WCLK and RCLK domains, supporting both coincident and fully asynchronous read/write operations. Its internal pointer logic manages 512 × 18-bit RAM with hardware-controlled EF/OR, FF/IR, PAE, PAF, and HF flags.

Flag behavior is determined at reset via FL/RXI/WXI pin states, enabling selection between IDT Standard and FWFT timing modes, as well as synchronous vs. asynchronous PAE/PAF assertion and single/double register-buffered flag outputs - directly impacting metastability immunity and latency in boundary-state detection.

Key Specifications

Pinout & Package

72V215L10TFG is housed in a 64-pin thin quad flatpack (TQFP), order code TF, with 7 ground pins distributed for noise suppression and signal integrity in high-speed digital systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 72V215L15TFG and 72V215L20TFG, the 72V215L10TFG delivers the highest throughput (100 MHz) and lowest access latency (6.5 ns tA), making it optimal for latency-sensitive, high-bandwidth buffering - while the slower variants offer relaxed timing closure and lower dynamic power at reduced clock rates.

Availability

72V215L10TFG is available at Aetrix Electronics and suitable for LAN controllers, interprocessor communication links, and optical disk controller buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 72V215L10TFG 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 (IDT) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs, acquired by Renesas Electronics in 2019.

The IDT72V2xx family was designed specifically for high-speed, low-latency data buffering in multi-clock domain systems - emphasizing deterministic flag timing, expandability, and industrial-grade reliability.

FAQ

What is the memory organization of the 72V215L10TFG?

The 72V215L10TFG implements a 512 × 18-bit synchronous FIFO memory array, delivering 9,216 bits of buffered storage. This configuration supports 18-bit parallel data paths commonly used in network controllers and DSP interfaces. The device uses internal read and write pointers managed entirely in hardware, eliminating the need for external address logic or microcontroller intervention during normal operation.

Does the 72V215L10TFG support both single-clock and dual-clock operation?

Yes, the 72V215L10TFG supports both configurations: RCLK and WCLK can be tied together for single-clock operation, or run independently for true dual-clock domain bridging. Its AC specifications guarantee correct operation with up to 8 ns skew between clocks, and flag timing (e.g., tSKEW1, tSKEW2) is explicitly characterized for asynchronous clock relationships - essential for robust inter-domain data transfer in the 72V215L10TFG.

How is the First Word Fall-Through (FWFT) mode enabled on the 72V215L10TFG?

FWFT mode is selected during power-on reset by asserting specific logic levels on FL, RXI, and WXI pins per Table 3 in the datasheet - for example, FL=0, RXI=0, WXI=1 configures FWFT with triple/double register-buffered OR/IR flags. Once configured, the 72V215L10TFG outputs the first written word after three RCLK edges without requiring REN assertion, reducing read latency in burst-oriented applications.

Can the Almost-Empty and Almost-Full flag thresholds be customized on the 72V215L10TFG?

Yes, the 72V215L10TFG allows user programming of PAE and PAF offsets via the LD pin and D0–D11 inputs. With LD and WEN held LOW, successive WCLK edges load empty offset (first edge) and full offset (second edge) values. Default offsets are 63 words from empty/full, but custom values enable precise buffer watermarking - a capability confirmed in the functional description and timing diagrams of the 72V215L10TFG datasheet.

What is the purpose of the FL, WXI, and RXI pins on the 72V215L10TFG?

FL (First Load), WXI (Write Expansion Input), and RXI (Read Expansion Input) are configuration pins sampled during reset to determine three operational parameters: FIFO timing mode (IDT Standard vs. FWFT), flag synchronization type (asynchronous vs. synchronous PAE/PAF), and flag output buffering (single vs. double register). Their state defines behavior per Tables 3–5 - making them essential for hardware-defined system-level timing and reliability characteristics in the 72V215L10TFG.