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Renesas 5962-8687521YA
- Part No.:
- 5962-8687521YA
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-LCC
- Datasheet:
-
5962-8687521YA.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 48LCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,657
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Product details
Overview
5962-8687521YA from IDT is a military-grade 1K × 8 dual-port static RAM with on-chip arbitration logic, 25ns/35ns access time (max), TTL-compatible 5V ±10% operation, and integrated BUSY/INT flags for port-to-port coordination - used in real-time avionics data buffers and radar signal processing subsystems.
For engineers reviewing the 5962-8687521YA datasheet, 5962-8687521YA pinout, 5962-8687521YA application, or 5962-8687521YA equivalent, this page delivers verified military-spec timing, dual-port arbitration behavior, BUSY flag timing constraints, and QML-38535 compliance details essential for DO-254/DO-160 design validation.
Technical Context
The 5962-8687521YA implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous access to the same memory location by asserting BUSYL/BUSYR outputs (open-drain, pull-up required) within 20ns (tBAA/tBAC) to block conflicting writes.
It supports MASTER/SLAVE configuration: as MASTER, it drives BUSY outputs and handles arbitration priority via tAPS = 5ns setup; as SLAVE (e.g., 5962-8687522YA), BUSY pins are inputs that inhibit writes when asserted. INTL/INTR flags enable hardware-triggered inter-port interrupts with tINS ≤ 25ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,024 × 8 bits - provides 1KB of fast, non-volatile-access buffer space per port. |
| Access Time | 25ns (max) - guarantees deterministic read latency for hard real-time systems operating at ≥20 MHz bus rates. |
| Operating Voltage | 5.0V ±10% - compatible with legacy TTL and 5V CMOS logic families without level-shifting. |
| Temperature Range | –55°C to +125°C - qualified per MIL-PRF-38535 Class V for extended-life aerospace deployment. |
| Standby Current | 1.0mA (typ) / 30µA (max) - enables low-power sleep modes during system idle without data loss. |
| Arbitration Setup | tAPS = 5ns - defines minimum address stability window before BUSY assertion to ensure deterministic contention resolution. |
| Interrupt Latency | tINS ≤ 25ns - ensures sub-30ns response from write-triggered interrupt assertion to flag activation. |
Pinout & Package
5962-8687521YA is supplied in a 48-pin ceramic flatpack (FP48) package, hermetically sealed and qualified for high-reliability military applications. Pin layout supports symmetrical left/right port routing with dedicated VCC/GND pairs for noise isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground Reference | Two separate ground pins reduce ground bounce and improve signal integrity across both ports. |
| VCC (Pin 23) | Power Supply | Single 5V supply powers all internal logic and I/O drivers; requires local decoupling per MIL-STD-1399. |
| BUSYL / BUSYR (Pins 8, 22) | Arbitration Output | Open-drain BUSY flags require external pull-up; assert LOW to stall writes during address contention. |
| INTL / INTR (Pins 7, 21) | Interrupt Flag | Active-HIGH flags indicate inter-port events (e.g., write to 0x3FE/0x3FF) with no software polling needed. |
| A0L–A9L / A0R–A9R (Pins 12–13, 15–20, 25–26, 30–31, 33–34, 36–41) | Address Inputs | 10-bit independent address buses per port enable concurrent access to disjoint memory regions. |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 14, 27–32, 35, 42–48) | Data I/O | Bidirectional 8-bit data paths support simultaneous read/write operations without bus turnaround delay. |
| CEL / CER (Pins 2, 47) | Chip Enable | Asynchronous active-low enables allow independent power gating per port to minimize dynamic current. |
| OEL / OER (Pins 3, 46) | Output Enable | Controls output driver state independently per port - critical for bus sharing in multi-SRAM systems. |
| R/WL / R/WR (Pins 4, 45) | Read/Write Control | Direct R/W polarity control eliminates need for external direction logic in synchronous interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access without external glue logic, reducing PCB area and failure points. |
| Open-drain BUSY outputs | Enable wired-OR arbitration across multiple dual-port SRAMs in shared-memory multiprocessor topologies. |
| Hardware interrupt generation | Eliminates polling overhead by signaling inter-port events (e.g., command receipt) via dedicated INTL/INTR pins. |
| QML-38535 Class V qualification | Guarantees radiation hardness, burn-in screening, and lot traceability required for flight-critical avionics. |
| Asynchronous dual-port operation | Permits independent clock domains on left/right ports - essential for interfacing dissimilar processors (e.g., PowerPC + FPGA). |
Applications
| Avionics Data Buffering | Radar Signal Processing |
|---|---|
Use Scenario: Real-time buffering of sensor telemetry between flight computer and display processor in MIL-STD-1553B subsystems. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a deterministic, zero-latency handshake buffer with BUSY-controlled write blocking during display refresh cycles. Use Value: Eliminates FIFO overflow risk during burst telemetry ingestion while maintaining guaranteed 25ns read access for display rendering. | Use Scenario: Storing intermediate FFT results between ADC capture engine and DSP core in airborne pulse-Doppler radar. IC Role / Device Role / Timing Role: Provides concurrent write (from ADC DMA) and read (by DSP) access to shared coefficient tables with hardware arbitration. Use Value: Enables continuous pipeline operation without software-managed semaphores, reducing jitter below 10ns. |
| Secure Communication Modem | Missile Guidance Control |
Use Scenario: Key exchange buffer between crypto accelerator and baseband processor in Type 1 encrypted comms hardware. IC Role / Device Role / Timing Role: Acts as tamper-resistant shared memory with INT-driven notification of key availability and BUSY-enforced atomic updates. Use Value: Prevents side-channel leakage during key loading by eliminating software-visible race conditions. | Use Scenario: Storing real-time IMU fusion outputs and guidance command history in inertial navigation units. IC Role / Device Role / Timing Role: Serves as fault-tolerant scratchpad memory with dual-port access enabling redundant processor cross-checking. Use Value: Supports lockstep comparison of guidance calculations at 1kHz update rate with sub-microsecond latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 5962-8687522YA | SLAVE variant: BUSY pins are inputs only; no on-chip arbitration logic; identical timing and packaging. | Requires external MASTER (e.g., 5962-8687521YA) for arbitration; used only in expanded 16-bit+ word-width configurations. | Select when building scalable memory arrays where one 5962-8687521YA MASTER controls multiple SLAVE devices. |
| 5962-9315901HXA | 1K × 16 dual-port; 35ns access; QML-38535 Class V; different pinout (52-pin PLCC); no INT flag. | Provides wider data path but lacks hardware interrupt capability; requires PCB redesign due to package and pin count mismatch. | Choose only if 16-bit data width is mandatory and interrupt-driven signaling can be implemented externally. |
Compared with 5962-8687522YA and 5962-9315901HXA, the 5962-8687521YA uniquely combines MASTER arbitration, hardware interrupts, and FP48 packaging - making it the sole option for compact, self-contained dual-processor synchronization in space-constrained military modules.
Availability
5962-8687521YA is available at Aetrix Electronics and suitable for avionics data buffering, radar signal processing, secure communication modems, and missile guidance control requiring stable component supply under extended temperature and radiation-hardened conditions.
Supply support for 5962-8687521YA 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) is a fabless semiconductor company specializing in high-performance memory, timing, and interface solutions for aerospace, defense, and industrial markets.
The 5962-8687521YA belongs to IDT's military dual-port SRAM product line, engineered specifically for deterministic, radiation-tolerant shared-memory architectures in safety-critical real-time systems.
FAQ
What is the maximum guaranteed access time for the 5962-8687521YA?
The 5962-8687521YA has a maximum guaranteed access time of 25ns for commercial/military speed grades, verified across –55°C to +125°C per MIL-PRF-38535 testing. This applies to both tAA (address access) and tACE (chip enable access), ensuring deterministic timing in hard real-time avionics loops.
Does the 5962-8687521YA support battery backup data retention?
No, the 5962-8687521YA does not support battery backup data retention. That feature is exclusive to LA-suffixed variants (e.g., 5962-8687521LA). The 5962-8687521YA is an SA-grade part optimized for speed and QML-38535 Class V reliability, not low-voltage retention.
How does BUSY arbitration work on the 5962-8687521YA?
When both ports attempt access to the same address, the 5962-8687521YA asserts BUSYL or BUSYR within 20ns (tBAA) to block the later-arriving write. The arbitration priority is determined by which port meets the 5ns tAPS setup window first - no external logic is required to resolve contention.
Can the 5962-8687521YA be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the 5962-8687521YA is exclusively a MASTER device with on-chip arbitration logic and open-drain BUSY outputs. For SLAVE operation, use 5962-8687522YA, which accepts BUSY as an input and lacks arbitration circuitry - the two parts are functionally distinct and not interchangeable.
What package type is used for the 5962-8687521YA?
The 5962-8687521YA is packaged in a 48-pin ceramic flatpack (FP48), measuring approximately 0.75 in × 0.75 in × 0.11 in. This hermetic, leadless package meets MIL-STD-883 requirements for moisture resistance and thermal cycling endurance in harsh environments.
5962-8687521YA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-LCC
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LCC (14.22x14.22)
5962-8687521YA FAQ
1.How can I place an order for 5962-8687521YA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8687521YA 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 5962-8687521YA reliable?
The price and inventory of 5962-8687521YA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8687521YA is usually 5 days.
3.What payment methods are accepted for 5962-8687521YA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5962-8687521YA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5962-8687521YA?
5962-8687521YA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8687521YA 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 5962-8687521YA?
For technical support, including 5962-8687521YA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8687521YA requirements.
6.How does Aetrix verify that 5962-8687521YA is sourced from the original manufacturer or authorized distributors?
All 5962-8687521YA 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 5962-8687521YA meets industry standards.
7.What is the process for return or replacement of 5962-8687521YA?
All 5962-8687521YA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8687521YA, 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 5962-8687521YA part is unused and in its original packaging.
Return procedure for 5962-8687521YA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5962-8687521YA Tags
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