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Renesas 72V231L15PFGI8
- Part No.:
- 72V231L15PFGI8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LQFP
- Datasheet:
-
72V231L15PFGI8.pdf
- Description:
- IC FIFO SYNC 2KX9 10NS 32TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
72V231L15PFGI8 from Integrated Device Technology is a 3.3 V CMOS Synchronous FIFO memory with 2,048 × 9-bit depth, 10 ns read/write cycle time, dual-clock operation support (RCLK/WCLK), and programmable Almost-Empty/Almost-Full flags. It serves as a high-speed data buffer in interprocessor communication and local area network interfaces.
For engineers reviewing the 72V231L15PFGI8 datasheet, 72V231L15PFGI8 pinout, 72V231L15PFGI8 application, or 72V231L15PFGI8 equivalent, key selection criteria include industrial temperature range (–40°C to +85°C), 5V input tolerance, zero fall-through time architecture, and configurable flag offsets for real-time flow control.
Technical Context
The 72V231L15PFGI8 implements a dual-ported, clocked FIFO architecture with independent read and write pointers synchronized to RCLK and WCLK respectively. It supports both single-clock (RCLK = WCLK) and asynchronous dual-clock modes, with EF/FF flags synchronized to RCLK/WCLK and PAE/PAF flags configurable via offset registers loaded using the WEN2/LD pin during reset.
Its 2,048-word × 9-bit RAM array uses submicron CMOS technology and features fixed Empty/Full flags plus two programmable flags defaulting to Empty+7 and Full−7. The device accepts 5V-tolerant inputs and operates at 3.0–3.6 V supply, enabling direct interfacing with legacy 5V logic while maintaining low-power 3.3V core operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth | 2,048 × 9-bit words - provides sufficient buffering for burst-mode data transfers in network packet handling or video frame alignment. |
| Cycle Time | 15 ns - enables up to 66.7 MHz clock operation, supporting high-throughput serial-to-parallel bridging applications. |
| Supply Voltage | 3.0 V to 3.6 V - ensures compatibility with modern 3.3V system rails while maintaining noise margin and power efficiency. |
| Input Tolerance | 5V tolerant - allows direct connection to 5V microcontrollers or FPGAs without level-shifting circuitry. |
| Temperature Range | –40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure. |
| Flag Synchronization | EF/PAE on RCLK; FF/PAF on WCLK - guarantees deterministic timing for status-driven handshaking in asynchronous data paths. |
| Package | 32-pin TQFP (PF) - surface-mount footprint compatible with automated PCB assembly and thermal management in dense layouts. |
Pinout & Package
72V231L15PFGI8 is packaged in a 32-pin plastic Thin Quad FlatPack (TQFP), order code PF, with 0.8 mm lead pitch and exposed thermal pad. Pin 1 marked by index notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RS | Reset Input | Active-low synchronous reset that initializes read/write pointers, sets FF/PAF HIGH and EF/PAE LOW, and clears output register to zero. |
| WCLK | Write Clock Input | Low-to-high edge triggers write; FF and PAF are synchronized to this clock for deterministic full-status reporting. |
| WEN1 / WEN2/LD | Write Enable 1 / Load Control | WEN1 enables writes when LOW; WEN2/LD configures mode at reset - HIGH enables dual-write-enable mode, LOW enables programmable flag loading. |
| RCLK | Read Clock Input | Low-to-high edge triggers read; EF and PAE are synchronized to this clock for precise empty-status tracking. |
| REN1 / REN2 | Read Enable Inputs | Both must be LOW to enable reads; either HIGH holds output register, preventing spurious data changes during bus arbitration. |
| OE | Output Enable Input | Active-low control of Q0–Q8 bus - HIGH places outputs in high-impedance state for shared-bus applications. |
| D0–D8 | Data Inputs | 9-bit parallel input bus accepting 5V-tolerant signals; data latched on WCLK rising edge when WEN1 asserted. |
| Q0–Q8 | Data Outputs | 9-bit parallel output bus; driven only when OE = LOW and EF = HIGH - prevents invalid reads during empty condition. |
| EF / FF / PAE / PAF | Status Flag Outputs | EF/PAE sync to RCLK; FF/PAF sync to WCLK; PAE/PAF offsets programmable via WEN2/LD-controlled register load sequence. |
| VCC / GND | Power Supply | Single 3.3V supply (3.0–3.6V); decoupling required near VCC pin to maintain signal integrity at 66.7 MHz operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Clock Operation | Independent RCLK and WCLK allow asynchronous data rate matching between source and sink domains without external synchronization logic. |
| Programmable Flags | PAE and PAF offsets configurable via four 8-bit registers (Empty LSB/MSB, Full LSB/MSB), enabling custom flow-control thresholds for latency-sensitive systems. |
| Zero Fall-Through Time | Eliminates read-after-write delay - valid data appears on Q outputs one RCLK cycle after corresponding write, critical for real-time pipeline buffering. |
| 5V Input Tolerance | Enables direct interface with 5V legacy controllers or FPGAs without external level shifters, reducing BOM count and board space. |
| Industrial Temperature Rating | Qualified from –40°C to +85°C with guaranteed AC/DC specs, supporting deployment in uncontrolled ambient environments like base stations or motor drives. |
| Output Enable Control | OE pin allows dynamic tri-state control of Q0–Q8 bus, facilitating multiplexed data paths and shared-memory architectures. |
Applications
| Interprocessor Communication | LAN Packet Buffering |
|---|---|
|
Use Scenario: Two microcontrollers exchange command/status data across an asynchronous bus with mismatched clock domains. IC Role / Device Role / Timing Role: 72V231L15PFGI8 acts as a clock-domain crossing (CDC) buffer, absorbing jitter and skew between processors while maintaining data coherency. Use Value: Eliminates metastability risk and eliminates need for handshake protocols or software polling - reduces CPU overhead by >40% in benchmarked dual-MCU systems. |
Use Scenario: Ethernet MAC layer buffers incoming frames before DMA transfer to host memory, accommodating variable PHY-to-MAC latency. IC Role / Device Role / Timing Role: 72V231L15PFGI8 serves as a depth-matched first-in-first-out queue, absorbing bursty 100 Mbps traffic while smoothing DMA request timing. Use Value: Prevents frame loss during back-to-back packet reception; 2,048-word depth supports ≥1.5× maximum Ethernet frame size (1522 bytes) at full line rate. |
| Video Frame Alignment | Industrial Sensor Aggregation |
|
Use Scenario: Camera sensor outputs pixel data at 72 MHz, while image processor reads at 60 MHz - requiring phase-aligned buffering. IC Role / Device Role / Timing Role: 72V231L15PFGI8 provides deterministic latency buffering with programmable PAE/PAF to trigger frame start/end interrupts precisely. Use Value: Enables sub-microsecond frame boundary detection; default Empty+7/Full−7 offsets reduce interrupt latency by 3.2 µs vs. fixed-threshold alternatives. |
Use Scenario: Multi-channel analog sensor hub aggregates readings from 8 RTD/thermocouple inputs into a unified stream for PLC controller. IC Role / Device Role / Timing Role: 72V231L15PFGI8 buffers time-stamped samples from ADC sequencer before batch transmission over RS-485. Use Value: Absorbs sampling jitter and enables deterministic batch size control; 5V-tolerant inputs simplify interface to legacy sensor front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous FIFO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT72V231L10PFGI8 | 10 ns cycle time (100 MHz max), higher ICC1 (20 mA typical), identical pinout and feature set. | Better suited for ultra-low-latency control loops where <10 ns access time is mandatory. | Select when system clock exceeds 66.7 MHz and thermal budget permits higher active current. |
| ICS72V231L15T | Same 2,048×9 organization and 15 ns timing, but offered in 32-pin PLCC (J) package instead of TQFP (PF). | Preferred for through-hole prototyping or legacy rework where PLCC socket compatibility is required. | Choose for manual assembly, field repair, or compatibility with existing PLCC-based carrier boards. |
Compared with IDT72V231L10PFGI8 and ICS72V231L15T, the 72V231L15PFGI8 offers optimal balance of speed (66.7 MHz), power (≤20 mA active), and modern surface-mount packaging - making it ideal for volume production of industrial embedded systems where thermal performance and automated assembly are priorities.
Availability
72V231L15PFGI8 is available at Aetrix Electronics and suitable for interprocessor communication, LAN packet buffering, video frame alignment, and industrial sensor aggregation requiring stable component supply across extended product lifecycles.
Supply support for 72V231L15PFGI8 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, and high-performance data movement solutions.
The IDT72V2xx family was designed specifically for high-speed, low-latency data buffering in mixed-signal and real-time embedded systems - emphasizing deterministic timing, industrial reliability, and seamless integration with FPGA and microcontroller platforms.
FAQ
What is the memory capacity of the 72V231L15PFGI8?
The 72V231L15PFGI8 contains a 2,048 × 9-bit synchronous FIFO memory array, providing 18,432 bits of total storage. This depth supports buffering of up to 2,048 discrete 9-bit words - sufficient for multi-frame video lines or burst-mode network packet staging. The 72V231L15PFGI8 does not support expansion beyond this fixed depth.
Does the 72V231L15PFGI8 support dual-clock operation?
Yes, the 72V231L15PFGI8 fully supports asynchronous dual-clock operation: RCLK controls read timing and EF/PAE flag updates, while WCLK governs write cycles and FF/PAF assertion. The device tolerates arbitrary frequency ratios and phase relationships between clocks, with tSKEW1/tSKEW2 specifications ensuring reliable flag transitions under worst-case skew conditions.
How are the programmable Almost-Empty and Almost-Full flags configured on the 72V231L15PFGI8?
The 72V231L15PFGI8 loads PAE/PAF offsets via its WEN2/LD pin during reset: holding WEN2/LD LOW at reset enables offset register programming mode. Four 8-bit registers (Empty LSB/MSB, Full LSB/MSB) are written sequentially using WCLK edges, with default values set to 007H (7 decimal) for both Empty+7 and Full−7 thresholds. The 72V231L15PFGI8 requires no external configuration EEPROM or I²C interface.
Is the 72V231L15PFGI8 compatible with 5V logic interfaces?
Yes, the 72V231L15PFGI8 features 5V-tolerant inputs on all control and data pins (D0–D8, WEN1, REN1, REN2, RS, OE, WEN2/LD), allowing direct connection to 5V microcontrollers, CPLDs, or legacy peripherals without level-shifting components. Its 3.3V VCC supply remains unaffected, preserving power efficiency and noise immunity.
What package type is used for the 72V231L15PFGI8?
The 72V231L15PFGI8 is supplied in a 32-pin plastic Thin Quad FlatPack (TQFP) with order code PF, featuring gull-wing leads, 0.8 mm pitch, and an exposed thermal pad. This RoHS-compliant package supports automated reflow soldering and provides superior thermal dissipation compared to PLCC variants - critical for sustained 66.7 MHz operation in industrial enclosures.
72V231L15PFGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 72V
- Package/Case:
- 32-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Size:
- 18K (2K x 9)
- Function:
- Synchronous
- Data Rate:
- 66.7MHz
- Access Time:
- 10ns
- Voltage - Supply:
- 3 V ~ 3.6 V
- Current - Supply (Max):
- 20mA
- Bus Directional:
- Uni-Directional
- Expansion Type:
- Depth, Width
- Programmable Flags Support:
- Yes
- Retransmit Capability:
- No
- FWFT Support:
- No
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFP (7x7)
72V231L15PFGI8 FAQ
1.How can I place an order for 72V231L15PFGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 72V231L15PFGI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 72V231L15PFGI8 reliable?
The price and inventory of 72V231L15PFGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 72V231L15PFGI8 is usually 5 days.
3.What payment methods are accepted for 72V231L15PFGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 72V231L15PFGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 72V231L15PFGI8?
72V231L15PFGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 72V231L15PFGI8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 72V231L15PFGI8?
For technical support, including 72V231L15PFGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 72V231L15PFGI8 requirements.
6.How does Aetrix verify that 72V231L15PFGI8 is sourced from the original manufacturer or authorized distributors?
All 72V231L15PFGI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 72V231L15PFGI8 meets industry standards.
7.What is the process for return or replacement of 72V231L15PFGI8?
All 72V231L15PFGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 72V231L15PFGI8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 72V231L15PFGI8 part is unused and in its original packaging.
Return procedure for 72V231L15PFGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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