Renesas 72V215L15TFGI

Overview

72V215L15TFGI from Integrated Device Technology (IDT) is a 3.3 V CMOS synchronous FIFO memory with 512 × 18-bit depth/width organization, 15 ns clock cycle time, 10 ns read/write access, and industrial temperature range (–40°C to +85°C). It supports dual-clock asynchronous operation, programmable Almost-Empty/Almost-Full flags, and First Word Fall-Through (FWFT) timing mode for low-latency data buffering in LAN controllers and interprocessor communication.

For engineers reviewing the 72V215L15TFGI datasheet, 72V215L15TFGI pinout, 72V215L15TFGI application, or 72V215L15TFGI equivalent, key selection considerations include its 512-word depth, 18-bit bus width, TQFP-64 package, 3.3 V supply with 5 V input tolerance, and configurable flag timing (synchronous/asynchronous) and register buffering (single/double/triple).

Technical Context

The 72V215L15TFGI implements a high-speed submicron CMOS SyncFIFO architecture with independent read/write clock domains (RCLK/WCLK), enabling asynchronous data transfer between mismatched clock domains. Its internal RAM array is paired with input/output registers, offset logic, and flag generation circuitry supporting EF/OR, FF/IR, PAE, PAF, and HF functions.

Configuration at reset determines timing mode (IDT Standard or FWFT), flag synchronization (asynchronous/synchronous), and register buffering depth (single/double/triple) via FL/RXI/WXI pin states. Flag offsets are user-programmable via LD/WEN-controlled loading of D0–D11 into internal registers, with default empty/full offsets of 63 words.

Key Specifications

Pinout & Package

72V215L15TFGI is housed in a 64-lead thin quad flatpack (TQFP) package with exposed thermal pad (STQFP), measuring 10 mm × 10 mm × 1.4 mm, lead pitch 0.5 mm, and SnPb lead finish (EOL as of June 2018).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 72V215L15PFI (PLCC) and 72V213L15TFGI (256×18), the 72V215L15TFGI delivers optimal balance of industrial temperature support, 512-word depth, TQFP manufacturability, and 5 V input tolerance-making it the preferred choice for new industrial networking and motion control designs.

Availability

72V215L15TFGI is available at Aetrix Electronics and suitable for industrial Ethernet switch data paths, optical disk controller buffering, interprocessor communication links, and real-time motion control interfaces requiring stable component supply across extended product lifecycles.

Supply support for 72V215L15TFGI 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019.

The IDT72V2xx family was designed specifically for high-reliability, low-latency data buffering in industrial and telecom infrastructure-emphasizing dual-clock operation, programmable flow control, and robust ESD-tolerant I/O.

FAQ

What is the memory organization and operating voltage of the 72V215L15TFGI?

The 72V215L15TFGI is a 512 × 18-bit synchronous FIFO memory operating from a single 3.3 V supply (3.0 V to 3.6 V). Its 18-bit data bus supports wide parallel transfers, and all inputs-including control signals-are 5 V tolerant, eliminating external level shifters when interfacing with legacy 5 V logic. This configuration is optimized for high-bandwidth buffering in industrial control and communications systems.

Does the 72V215L15TFGI support both single-clock and dual-clock operation?

Yes, the 72V215L15TFGI supports both configurations. When RCLK is tied to WCLK, it operates in single-clock mode for simplified timing. When driven independently, it enables true dual-clock asynchronous operation-allowing data transfer between mismatched clock domains (e.g., 66.7 MHz WCLK and 25 MHz RCLK). The device maintains full functionality including flag generation and programmable offsets in both modes.

How is the First Word Fall-Through (FWFT) mode configured on the 72V215L15TFGI?

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 = LOW, RXI = LOW, WXI = HIGH configures FWFT with triple-buffered OR and double-buffered IR flags. Once set, FWFT causes the first written word to appear on Q0–Q17 after three RCLK edges-even without asserting REN-reducing latency in streaming applications.

What are the default programmable flag offset values for the 72V215L15TFGI?

The 72V215L15TFGI defaults to an empty offset of 63 and a full offset of 63, meaning PAE asserts when 63 words remain before empty and PAF asserts when 63 words remain before full. These values are loaded into internal registers at reset and can be reprogrammed via the LD/WEN sequence using D0–D11. The offset registers are readable only in IDT Standard mode via Q0–Q11.

Is the 72V215L15TFGI suitable for industrial temperature applications?

Yes, the 72V215L15TFGI is explicitly qualified for the industrial temperature range of –40°C to +85°C, as confirmed in the datasheet's "Commercial and Industrial Temperature Ranges" header and DC Electrical Characteristics table. This makes it appropriate for deployment in factory automation, outdoor telecom equipment, and motor drive enclosures where ambient temperatures exceed commercial-grade limits.