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Renesas 7202LA15SOGI8
- Part No.:
- 7202LA15SOGI8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 28-SOIC (0.345", 8.77mm Width)
- Datasheet:
-
7202LA15SOGI8.pdf
- Description:
- IC FIFO ASYNC 1KX9 15NS 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,360
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Product details
Overview
7202LA15SOGI8 from Renesas Electronics (formerly IDT) is a 1,024 × 9-bit asynchronous CMOS FIFO memory IC used for rate buffering and data synchronization between mismatched clock domains or bus protocols. It features 15 ns access time, ultra-high-speed operation, dual-port architecture with independent read/write control, and status flags (Empty, Full, Half-Full). It is deployed in industrial communications interfaces requiring deterministic latency and overflow/underflow protection.
For engineers reviewing the 7202LA15SOGI8 datasheet, 7202LA15SOGI8 pinout, 7202LA15SOGI8 application, or 7202LA15SOGI8 equivalent, key selection criteria include its 1,024-word depth, 9-bit data width with parity support, 5 V single-supply operation, industrial temperature range (–40°C to +85°C), and compatibility with depth/width expansion topologies.
Technical Context
The 7202LA15SOGI8 implements a ring-pointer-based FIFO architecture with no external address bus - data flows sequentially via Write (W) and Read (R) strobes. Its internal logic maintains separate read and write pointers, enabling true asynchronous, simultaneous read/write operations without arbitration overhead.
It supports three operating modes: Single Device (XI grounded), Depth Expansion (daisy-chained via XI/XO), and Width Expansion (parallel data buses). The FL/RT pin serves dual roles - First Load in expansion mode and Retransmit enable in single-device mode - with retransmit resetting the read pointer while preserving the write pointer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 1,024 × 9 bits - supports up to 1,024 words of 9-bit data, enabling parity bit usage for error detection in serial/parallel comms links. |
| Access Time (tA) | 15 ns max - guarantees sub-15 ns data availability after read strobe, critical for real-time buffering in high-throughput UART, SPI, or custom protocol bridges. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic families and legacy industrial backplanes. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation controllers and motor drives. |
| Power Consumption | Active: ≤440 mW; Power-down: ≤28 mW - enables low-heat design in dense PCB layouts without forced cooling. |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full) - hardware-level flow control signals eliminate software polling and reduce CPU interrupt load. |
Pinout & Package
7202LA15SOGI8 is housed in a 28-pin SOIC (SO28-3) package with gull-wing leads, 300 mil body width, and Pb-free (RoHS-compliant) finish per ordering suffix "G".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W | Write Enable Input | Falling-edge-triggered write strobe; initiates storage of D0–D8 into FIFO on active transition, subject to FF flag state. |
| R | Read Enable Input | Falling-edge-triggered read strobe; outputs Q0–Q8 from FIFO head, subject to EF flag state. |
| D0–D8 | Data Inputs | 9-bit parallel input bus; accepts data during active W cycle; latched on W falling edge. |
| Q0–Q8 | Data Outputs | 9-bit parallel output bus; driven only when R = LOW; tri-stated otherwise. |
| EF, FF, XO/HF | Status Flag Outputs | Open-drain or push-pull (per datasheet) active-low flags indicating buffer state; EF=LOW = empty; FF=LOW = full; XO/HF=LOW = half-full (single-mode). |
| RS | Reset Input | Active-low synchronous reset; forces both read/write pointers to location zero; required before first write after power-up. |
| FL/RT | First Load / Retransmit Input | In single-device mode: RT pulse resets read pointer to start; in depth expansion: FL selects first device in chain. |
| XI | Expansion In Input | Grounded for single-device mode; connected to XO of prior device in daisy-chain depth expansion. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Independent W and R clocks allow seamless bridging between systems with unrelated timing domains - no clock domain crossing logic needed. |
| Auto-Retransmit Capability | Pulsing FL/RT LOW resets read pointer to origin without affecting write pointer - essential for protocol retransmission (e.g., HDLC, CAN FD frame retries) without data loss. |
| Expandable Architecture | Supports unlimited depth expansion (via XI/XO chaining) and width expansion (parallel devices) - enables scalable buffer sizes from 1K×9 up to multi-Mbit arrays with minimal glue logic. |
| 9-Bit Data Width with Parity Option | Extra bit allows user-defined parity generation/checking - directly supports error-resilient communication in industrial fieldbus, telemetry, and avionics subsystems. |
Applications
| Industrial Serial Bridge | Motor Control Data Buffer |
|---|---|
Use Scenario: Bridging RS-485 master to multiple Modbus RTU slaves with variable response times. IC Role / Device Role / Timing Role: Asynchronous FIFO decouples master transmit timing from slave reply latency, absorbing jitter and preventing UART overrun. Use Value: Eliminates software flow control and retry loops; ensures deterministic 1,024-byte burst transmission even under 100% bus utilization. | Use Scenario: Storing position feedback samples from encoder interface before DSP processing in servo drive. IC Role / Device Role / Timing Role: Rate-matching buffer between high-frequency encoder sampling (e.g., 10 MHz quadrature) and lower-rate motion controller loop (e.g., 20 kHz). Use Value: Prevents sample loss during transient load spikes; enables continuous capture at full resolution without DMA stalls. |
| Legacy Bus Protocol Adapter | Test Equipment Pattern Memory |
Use Scenario: Converting ISA-bus DMA bursts to synchronous SPI writes for flash programming in embedded test fixtures. IC Role / Device Role / Timing Role: FIFO absorbs bursty ISA transfers and emits steady SPI clock-aligned data stream. Use Value: Removes need for large FPGA buffers; reduces BOM cost vs. SRAM+controller solution while maintaining 15 ns throughput. | Use Scenario: Storing stimulus patterns for digital I/O test vectors in automated board-level testers. IC Role / Device Role / Timing Role: Preloaded pattern memory accessed via controlled read cycles synchronized to test clock. Use Value: Enables repeatable, glitch-free vector delivery at up to 66 MHz effective rate using simple counter-driven R strobes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7202LA20SOGI8 | 20 ns access time (vs. 15 ns); otherwise identical pinout, function, and specs. | Suitable where 15 ns timing margin is unnecessary - e.g., <50 MHz system clocks or relaxed setup/hold requirements. | Select when cost sensitivity outweighs need for maximum speed; same footprint and firmware. |
| SN74V293-15PAG | Texas Instruments 1K×9 FIFO; 15 ns access; 3.3 V supply (not 5 V); different pinout (32-pin TQFP vs. 28-pin SOIC). | Requires level-shifting and PCB redesign; intended for modern 3.3 V systems, not legacy 5 V industrial designs. | Only consider if migrating entire platform to 3.3 V; not drop-in compatible. |
Compared with IDT7202LA20SOGI8, the 7202LA15SOGI8 delivers tighter timing margins for high-speed interfacing; compared with SN74V293-15PAG, it retains 5 V compatibility and SOIC packaging for drop-in replacement in existing industrial PCBs.
Availability
7202LA15SOGI8 is available at Aetrix Electronics and suitable for industrial automation, motor control, and legacy bus interface applications requiring stable component supply and long-term obsolescence management.
Supply support for 7202LA15SOGI8 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 delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT markets.
The IDT7200L/7201LA/7202LA family was designed specifically for deterministic, low-latency data buffering in industrial and military systems where asynchronous rate adaptation and hardware flow control are mandatory.
FAQ
What is the maximum clock frequency supported by the 7202LA15SOGI8 for read and write operations?
The 7202LA15SOGI8 does not require a clock signal - it is fully asynchronous. Its maximum effective throughput is governed by access time and cycle timing: with tA = 15 ns and tRC = 25 ns, it supports up to 40 MHz sustained read/write strobe rates. The 7202LA15SOGI8 achieves this without clock trees or synchronization logic, simplifying timing-critical designs.
Does the 7202LA15SOGI8 support parity checking, and how is it implemented?
Yes, the 7202LA15SOGI8 provides a 9-bit data path (D0–D8 / Q0–Q8) explicitly enabling user-defined parity bit usage. The ninth bit is not internally interpreted - it is passed transparently, allowing designers to generate odd/even parity externally and validate it on receive. This capability is confirmed in the Functional Description and Applications sections of the datasheet for the 7202LA15SOGI8.
Can the 7202LA15SOGI8 be used in depth-expansion mode, and what pins are required?
Yes, the 7202LA15SOGI8 supports depth expansion via daisy-chaining. Required pins: FL/RT (set LOW on first device), XI (tied to XO of previous device), and XO (drives XI of next device). The 7202LA15SOGI8's datasheet confirms full compatibility with this mode, though HF and RT functions are disabled in expansion configuration.
What is the purpose of the XO/HF pin on the 7202LA15SOGI8, and how does its behavior change between modes?
The XO/HF pin is dual-function: in Single Device Mode (XI = GND), it outputs the Half-Full Flag (HF); in Depth Expansion Mode (XI tied to prior XO), it becomes Expansion Out (XO), signaling memory fullness to the next device. This behavior is defined in the Signal Descriptions section of the 7202LA15SOGI8 datasheet and verified in Table 1 and Figure 14.
Is the 7202LA15SOGI8 RoHS-compliant, and what does the 'G' suffix indicate?
Yes, the 'G' in 7202LA15SOGI8 denotes RoHS-compliant, lead-free finish per JEDEC J-STD-609. The device uses matte tin plating over copper leadframe and meets EU Directive 2011/65/EU. This is specified in the Ordering Information section and PDN# SP-17-02 notice accompanying the 7202LA15SOGI8 datasheet.
7202LA15SOGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 28-SOIC (0.345", 8.77mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 28-SOIC
7202LA15SOGI8 FAQ
1.How can I place an order for 7202LA15SOGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA15SOGI8 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 7202LA15SOGI8 reliable?
The price and inventory of 7202LA15SOGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA15SOGI8 is usually 5 days.
3.What payment methods are accepted for 7202LA15SOGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA15SOGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA15SOGI8?
7202LA15SOGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA15SOGI8 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 7202LA15SOGI8?
For technical support, including 7202LA15SOGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA15SOGI8 requirements.
6.How does Aetrix verify that 7202LA15SOGI8 is sourced from the original manufacturer or authorized distributors?
All 7202LA15SOGI8 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 7202LA15SOGI8 meets industry standards.
7.What is the process for return or replacement of 7202LA15SOGI8?
All 7202LA15SOGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA15SOGI8, 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 7202LA15SOGI8 part is unused and in its original packaging.
Return procedure for 7202LA15SOGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7202LA15SOGI8 Tags
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