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Renesas 7201LA15SOGI
- Part No.:
- 7201LA15SOGI
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 28-SOIC (0.345", 8.77mm Width)
- Datasheet:
-
7201LA15SOGI.pdf
- Description:
- IC FIFO ASYNC 512X9 15NS 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
7201LA15SOGI from IDT (now Renesas Electronics) is a 512 × 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-low active power (440 mW max), full/empty/half-full status flags, and auto-retransmit capability. It is deployed in industrial communications interfaces requiring deterministic latency and overflow/underflow protection.
For engineers reviewing the 7201LA15SOGI datasheet, 7201LA15SOGI pinout, 7201LA15SOGI application, or 7201LA15SOGI equivalent, key selection criteria include its 512-word depth, 9-bit data width with parity support, industrial temperature range (–40°C to +85°C), TSSOP-28 package, and compatibility with depth/width expansion architectures.
Technical Context
The 7201LA15SOGI implements a dual-port ring-buffer architecture with independent read/write pointers managed entirely internally-no external address lines required. Its asynchronous operation allows simultaneous read and write cycles without shared clock constraints, making it suitable for multiprocessing handshaking and protocol bridging.
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-while HF flag functionality is disabled in expansion configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 512 × 9-bit FIFO buffer - supports 512 words of 9-bit data, enabling parity bit usage for error detection in serial comms. |
| Access Time (tA) | 15 ns max - guarantees sub-20 ns data availability after write pulse, critical for high-throughput buffering in real-time systems. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic rails and tolerant of supply ripple in industrial environments. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade applications including factory automation and motor control. |
| Power Consumption | Active: 440 mW max; Power-down: 28 mW max - enables low-energy operation during idle periods without sacrificing wake-up latency. |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full or Expansion Out) - provides hardware-level flow control without software polling overhead. |
| Retransmit Function | RT input resets read pointer to start on falling edge - supports re-sending buffered data frames without CPU intervention. |
Pinout & Package
7201LA15SOGI is housed in a 28-pin TSSOP (Thin Shrink Small Outline Package) with 0.65 mm pitch, optimized for surface-mount assembly and thermal performance in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W | Write Enable Input | Falling-edge-triggered write strobe; initiates storage of D0–D8 into FIFO when FF = HIGH. |
| R | Read Enable Input | Falling-edge-triggered read strobe; outputs Q0–Q8 from FIFO when EF = HIGH. |
| D0–D8 | Data Inputs | 9-bit parallel data bus accepting input values synchronized to W edge; supports parity bit assignment. |
| Q0–Q8 | Data Outputs | 9-bit tri-state outputs enabled only during active read cycle (R = LOW); high-impedance otherwise. |
| EF, FF, XO/HF | Status Flag Outputs | Open-drain or push-pull (per config); EF = LOW when empty, FF = LOW when full, XO/HF = LOW at half-fill in single-device mode. |
| RS | Reset Input | Active-LOW signal that synchronously resets both read and write pointers to location zero; required before first write. |
| FL/RT | Mode-Control Input | In single-device mode (XI = GND): RT function - pulsed LOW to reset read pointer; in depth expansion: FL designation for first device. |
| XI | Expansion In Input | Grounded for single-device operation; tied to XO of prior device in daisy-chain depth expansion. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Architecture | Enables independent, concurrent read/write operations without clock domain alignment-eliminates synchronization logic in bridge designs. |
| Hardware Flow Control Flags | EF, FF, and HF flags provide immediate, cycle-accurate status feedback-reduces firmware overhead and prevents data loss in burst transfers. |
| Auto-Retransmit Capability | RT input resets read pointer without affecting write pointer-enables repeat transmission of command/response sequences in protocol stacks. |
| Expandable Memory Depth & Width | Supports unlimited depth via XI/XO daisy chaining and arbitrary width via parallel data bus stacking-scalable from 512×9 to multi-kiloword buffers. |
| Military-Grade Qualification | Compliant with MIL-STD-883 Class B and SMD 5962-89666-validated for ruggedized industrial and defense subsystems. |
Applications
| Industrial Serial Bridge | Motor Drive Interface |
|---|---|
Use Scenario: Buffering UART-to-LVDS conversion between PLC master and remote I/O modules with mismatched baud rates. IC Role / Device Role / Timing Role: Asynchronous FIFO decouples transmit/receive timing, absorbing jitter and preventing overrun during RS-485 packet bursts. Use Value: Eliminates software-based byte-stuffing and retry logic; ensures deterministic 15 ns latency per word transfer under worst-case timing. | Use Scenario: Isolating PWM command stream from motion controller to servo amplifier across galvanically separated domains. IC Role / Device Role / Timing Role: Rate-matching FIFO absorbs transient timing skew between 10 kHz position loop updates and 20 kHz current loop execution. Use Value: Prevents missed commands during power-up sequencing or fault recovery; maintains positional integrity via hardware-enforced flow control. |
| Legacy Bus Adapter | Test Equipment Data Capture |
Use Scenario: Adapting ISA-bus peripherals to modern PCIe-based test controllers using FPGA glue logic. IC Role / Device Role / Timing Role: Bridges asynchronous ISA data bursts (up to 8 MHz) into synchronous DMA channels with no CPU involvement. Use Value: Offloads burst-to-stream conversion from host processor; sustains 512-word deep buffering for uninterrupted capture during bus arbitration delays. | Use Scenario: Capturing high-speed analog waveform samples from ADCs into FPGA-based digital oscilloscopes. IC Role / Device Role / Timing Role: First-stage buffer holding sampled data until FPGA processes and compresses blocks for DRAM storage. Use Value: Absorbs variable processing latency; guarantees no sample loss during FFT computation or trigger analysis windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7201LA20SOGI | Slower 20 ns access time; identical 512×9 organization, TSSOP-28 package, and feature set. | Suitable where system timing margins allow relaxed setup/hold requirements; lower power draw in marginal cases. | Select when 15 ns speed is unnecessary and cost or availability favors 20 ns grade. |
| 7202LA15SOGI | Double memory depth (1024×9); same speed, voltage, temperature, and pinout-pin-compatible upgrade path. | Required when application buffer depth exceeds 512 words but retains same interface timing and layout. | Choose for future-proofing or immediate need for >512-word capacity without redesign. |
Compared with 7201LA15SOGI, the 7201LA20SOGI trades 5 ns speed for marginally lower power and broader availability, while the 7202LA15SOGI offers double depth with identical timing-making it a direct layout-compatible upgrade for deeper buffering needs.
Availability
7201LA15SOGI is available at Aetrix Electronics and suitable for industrial serial bridges, motor drive interfaces, legacy bus adapters, and test equipment data capture requiring stable component supply across extended production lifecycles.
Supply support for 7201LA15SOGI 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
IDT (Integrated Device Technology), now part of Renesas Electronics, is a semiconductor innovator specializing in timing, memory interface, and high-performance interconnect solutions.
The IDT7200/7201/7202 family was designed specifically for deterministic, low-latency data buffering in industrial, military, and communications systems where asynchronous rate matching and hardware flow control are essential.
FAQ
What is the memory depth and data width of the 7201LA15SOGI?
The 7201LA15SOGI is a 512 × 9-bit asynchronous FIFO, providing 512 words of storage with a 9-bit data path. This configuration supports 8-bit data plus one parity bit, making it ideal for error-checked serial communication protocols. Its fixed depth and width are defined by silicon implementation-not configurable via registers-and match the IDT7201LA product designation in the 7200L family.
Does the 7201LA15SOGI support industrial temperature operation?
Yes, the 7201LA15SOGI is rated for industrial temperature operation from –40°C to +85°C. This rating is explicitly confirmed in the "Recommended DC Operating Conditions" table and applies to all speed grades-including the 15 ns variant-when ordered with the 'I' temperature suffix (embedded in the 'SOGI' package code). It is not rated for commercial-only or military-only variants.
How does the Retransmit (RT) function work on the 7201LA15SOGI?
The Retransmit (RT) function on the 7201LA15SOGI resets the internal read pointer to the first memory location when RT is pulsed LOW, while leaving the write pointer unchanged. This enables re-reading buffered data from the beginning without disrupting ongoing writes. RT operates only in Single Device Mode (XI = GND) and is disabled in Depth Expansion Mode per datasheet Section 6.
Is the 7201LA15SOGI pin-compatible with other members of the IDT7200L family?
Yes, the 7201LA15SOGI is pin- and functionally compatible with the entire IDT7200L/7201LA/7202LA family in the same package (e.g., TSSOP-28), including 7200L15SOGI and 7202LA15SOGI. This allows drop-in depth upgrades (e.g., 512 → 1024 words) without PCB changes, provided the application firmware handles the increased buffer size.
What package type and lead finish does the 7201LA15SOGI use?
The 7201LA15SOGI uses a 28-pin TSSOP (Thin Shrink Small Outline Package) with lead finish compliant with RoHS and JEDEC standards. The 'G' in 'SOGI' denotes green (halogen-free) packaging, and 'I' specifies industrial temperature range. Lead finish is matte tin-SnPb versions were discontinued per PDN# SP-17-02 with last-time-buy ending June 15, 2018.
7201LA15SOGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 28-SOIC (0.345", 8.77mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 4.5K (512 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
7201LA15SOGI FAQ
1.How can I place an order for 7201LA15SOGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7201LA15SOGI 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 7201LA15SOGI reliable?
The price and inventory of 7201LA15SOGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7201LA15SOGI is usually 5 days.
3.What payment methods are accepted for 7201LA15SOGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7201LA15SOGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7201LA15SOGI?
7201LA15SOGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7201LA15SOGI 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 7201LA15SOGI?
For technical support, including 7201LA15SOGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7201LA15SOGI requirements.
6.How does Aetrix verify that 7201LA15SOGI is sourced from the original manufacturer or authorized distributors?
All 7201LA15SOGI 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 7201LA15SOGI meets industry standards.
7.What is the process for return or replacement of 7201LA15SOGI?
All 7201LA15SOGI units undergo pre-shipment inspection (PSI). If there is an issue with 7201LA15SOGI, 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 7201LA15SOGI part is unused and in its original packaging.
Return procedure for 7201LA15SOGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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