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Renesas 7202LA15JGI
- Part No.:
- 7202LA15JGI
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
7202LA15JGI.pdf
- Description:
- IC FIFO ASYNC 1KX9 15NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,562
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Product details
Overview
IDT7202LA15JGI from Renesas Electronics (formerly IDT) is a 1,024 × 9-bit asynchronous CMOS FIFO memory IC used for rate buffering and data flow synchronization between mismatched clock domains or bus protocols. It features 12 ns access time, ultra-low active power (440 mW max), 28 mW max power-down, and status flags (Empty, Full, Half-Full) for overflow/underflow control - deployed in industrial communications interfaces and legacy military avionics data buffers.
For engineers reviewing the IDT7202LA15JGI datasheet, IDT7202LA15JGI pinout, IDT7202LA15JGI application, or IDT7202LA15JGI equivalent, key selection criteria include its 1,024-word depth, 9-bit width with parity support, 15 ns speed grade, PLCC-32 package, and retransmit capability for protocol recovery - all critical for deterministic buffering in serial link gateways and dual-processor interconnects.
Technical Context
The IDT7202LA15JGI implements a dual-port ring-pointer architecture with no external address bus required - data flows sequentially via Write (W) and Read (R) strobes. Its internal logic maintains independent read/write pointers, enabling true asynchronous and simultaneous read/write operations without arbitration logic.
It supports three operating modes: Single Device (XI grounded), Depth Expansion (daisy-chained via XO/XI), and Width Expansion (parallel devices). Retransmit (RT) resets the read pointer to zero without affecting write pointer - essential for packet retransmission in UART/HDLC subsystems - but is disabled in Depth Expansion mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 1,024 × 9 bits - supports full packets of 1K-byte + parity in serial comms applications |
| Access Time (tA) | 15 ns - enables ≤66.7 MHz effective throughput in flow-through mode |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5 V TTL/CMOS system rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments per datasheet specification |
| Power Consumption | Active: 440 mW max; Power-down: 28 mW max - reduces thermal load in dense backplane modules |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full or Expansion Out) - enables real-time buffer state monitoring without polling |
| Retransmit Function | Pulse-driven RT input resets read pointer to start - supports error recovery in HDLC/SDLC frame retransmission |
Pinout & Package
Package: 32-lead Plastic Leaded Chip Carrier (PLCC), J-lead variant (JGI suffix), 1.27 mm pitch, 13.97 mm × 13.97 mm body size, lead finish SnPb (EOL as of June 2018).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D8 | Data Input Bus | 9-bit parallel input path; supports parity bit assignment at user option |
| Q0–Q8 | Data Output Bus | Three-state outputs enabled only during active read (R = LOW) |
| W | Write Enable | Falling-edge triggered write strobe; initiates storage on next falling edge if FF = HIGH |
| R | Read Enable | Falling-edge triggered read strobe; outputs valid after tA if EF = HIGH |
| RS | Reset Input | Active-LOW reset; initializes both read/write pointers to location zero at power-up |
| FL/RT | First Load / Retransmit | Dual-function: LOW = first device in daisy chain; pulse-LOW = retransmit (single-device mode only) |
| XI | Expansion In | Grounded in single-device mode; tied to XO of prior device in depth expansion |
| XO/HF | Expansion Out / Half-Full Flag | In single mode: HF = LOW when ≥512 words stored; in expansion: pulse signals next device's XI |
| EF | Empty Flag | Open-drain output; LOW indicates no valid data available for read |
| FF | Full Flag | Open-drain output; LOW blocks further writes when 1,023 locations occupied |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required per high-speed CMOS layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Architecture | Enables independent read/write clocks - eliminates need for clock domain crossing logic in FPGA-based systems |
| Auto-Retransmit Capability | RT pulse resets read pointer without disturbing write pointer - simplifies firmware recovery in packetized protocols |
| Expandable Memory Depth & Width | Supports unlimited word-depth expansion (daisy-chain) and arbitrary bit-width expansion (parallel devices) |
| 9-Bit Data Path with Parity Option | Extra bit allows hardware parity generation/checking - critical for MIL-STD-1553B and ARINC 429 interface compliance |
| MIL-STD-883 Class B Compliance | Qualified for military temperature range (–55°C to +125°C) and reliability testing - used in flight-critical subsystems |
Applications
| Industrial Serial Gateways | Military Avionics Data Buffers |
|---|---|
Use Scenario: Bridging RS-422/RS-485 fieldbus networks to 32-bit microcontroller subsystems with mismatched baud rates. IC Role / Device Role / Timing Role: Asynchronous rate-matching FIFO that absorbs jitter and burst traffic without CPU intervention. Use Value: Eliminates lost characters during high-speed polling cycles by providing 1,024-word deep buffering with deterministic latency. | Use Scenario: Buffering sensor telemetry streams from analog-to-digital converters before transmission over MIL-STD-1553B buses. IC Role / Device Role / Timing Role: Deterministic latency FIFO ensuring data coherency across asynchronous timing domains in flight control computers. Use Value: Prevents underflow/overflow via EF/FF flag signaling - guarantees zero packet loss in safety-critical data acquisition. |
| Legacy Protocol Translators | Multi-Processor Interconnects |
Use Scenario: Converting HDLC frames between legacy mainframe controllers and modern Ethernet gateways. IC Role / Device Role / Timing Role: First-in/first-out memory with retransmit function for automatic frame retransmission on CRC failure. Use Value: RT pin enables hardware-level recovery without software overhead - reduces end-to-end latency by >20 µs vs. CPU-managed retry. | Use Scenario: Sharing real-time sensor data between dual ARM Cortex-A9 processors running independent RTOS instances. IC Role / Device Role / Timing Role: Bidirectional FIFO pair (two IDT7202LA15JGI) enabling lock-free inter-processor communication. Use Value: Eliminates semaphore contention and race conditions - improves system determinism in hard real-time control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7202LA20JGI | Slower 20 ns access time; identical 1,024 × 9 organization, PLCC-32 package, and feature set | Suitable where system timing budget allows relaxed setup/hold margins | Select when lower cost or extended availability outweighs 5 ns timing advantage |
| 7202LA15SOI | Same 15 ns speed and 1,024 × 9 spec, but SOIC-28 package - smaller footprint, no lead pitch compatibility | Preferred for space-constrained PCBs where PLCC socketing is not required | Choose for new designs targeting surface-mount assembly and reduced board area |
Compared with 7202LA20JGI and 7202LA15SOI, the IDT7202LA15JGI delivers optimal balance of speed (15 ns), industrial temperature rating, and PLCC-32 mechanical compatibility - making it the preferred choice for retrofitting legacy military chassis with socketed components.
Availability
IDT7202LA15JGI is available at Aetrix Electronics and suitable for industrial serial gateways, military avionics data buffers, legacy protocol translators, and multi-processor interconnects requiring stable component supply amid obsolescence challenges.
Supply support for IDT7202LA15JGI 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
Renesas Electronics Corporation is a global semiconductor leader formed from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and timing solutions.
The IDT7202LA15JGI belongs to the IDT7200L family of asynchronous FIFOs - designed specifically for deterministic data buffering in legacy industrial, aerospace, and defense systems requiring 5 V operation and MIL-STD-883 qualification.
FAQ
What is the memory organization of the IDT7202LA15JGI?
The IDT7202LA15JGI provides a 1,024 × 9-bit first-in/first-out memory array - meaning it stores up to 1,024 words, each 9 bits wide. This 9-bit width accommodates 8-bit data plus one parity bit, supporting error detection in mission-critical communications. The IDT7202LA15JGI uses ring-pointer addressing internally, eliminating the need for external address lines or counters.
Does the IDT7202LA15JGI support retransmission, and how is it activated?
Yes, the IDT7202LA15JGI supports hardware retransmission via the FL/RT pin. When operated in Single Device Mode (XI grounded), pulsing FL/RT LOW resets the internal read pointer to location zero while preserving the write pointer position - enabling immediate re-read of buffered data. This function is unavailable in Depth Expansion Mode. The IDT7202LA15JGI requires R and W to remain HIGH during the RT pulse for correct operation.
What are the valid operating temperature ranges for the IDT7202LA15JGI?
The IDT7202LA15JGI is specified for industrial temperature operation from –40°C to +85°C, as confirmed by the "I" suffix in its ordering code and datasheet characterization. While the broader IDT7202LA family includes military-grade variants (–55°C to +125°C), the JGI suffix denotes the industrial-temperature PLCC package. The IDT7202LA15JGI meets all DC and AC electrical specs within this industrial range.
Can multiple IDT7202LA15JGI devices be cascaded for greater depth?
Yes, the IDT7202LA15JGI supports depth expansion via daisy-chaining: connect XO of one device to XI of the next, ground FL on the first device, and tie FL HIGH on subsequent units. In this configuration, the IDT7202LA15JGI acts as a node in a larger FIFO array - though the retransmit and half-full functions are disabled, and composite EF/FF flags require external OR logic. Up to 64 devices can be chained per design guidelines.
Is the IDT7202LA15JGI still in production, and what is its EOL status?
The IDT7202LA15JGI is discontinued per Renesas PDN# SP-17-02: SnPb-lead-finish PLCC parts entered End-of-Life with Last Time Buy expiring June 15, 2018. However, Aetrix Electronics maintains verified legacy inventory with full traceability and extended support for ongoing industrial and defense programs. The IDT7202LA15JGI remains available for life-of-program procurement with documentation of original manufacturing lot data.
7202LA15JGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 9K (1K x 9)
- Function:
- Asynchronous
- Data Rate:
- 40MHz
- Access Time:
- 15ns
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Current - Supply (Max):
- 80mA
- Bus Directional:
- Uni-Directional
- Expansion Type:
- Depth, Width
- Programmable Flags Support:
- No
- Retransmit Capability:
- Yes
- FWFT Support:
- No
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (14x11.46)
7202LA15JGI FAQ
1.How can I place an order for 7202LA15JGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA15JGI 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 7202LA15JGI reliable?
The price and inventory of 7202LA15JGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA15JGI is usually 5 days.
3.What payment methods are accepted for 7202LA15JGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA15JGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA15JGI?
7202LA15JGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA15JGI 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 7202LA15JGI?
For technical support, including 7202LA15JGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA15JGI requirements.
6.How does Aetrix verify that 7202LA15JGI is sourced from the original manufacturer or authorized distributors?
All 7202LA15JGI 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 7202LA15JGI meets industry standards.
7.What is the process for return or replacement of 7202LA15JGI?
All 7202LA15JGI units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA15JGI, 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 7202LA15JGI part is unused and in its original packaging.
Return procedure for 7202LA15JGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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