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Renesas 7130LA55J/2930
- Part No.:
- 7130LA55J/2930
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA55J/2930.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,290
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Product details
Overview
7130LA55J/2930 from IDT is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 55 ns maximum read/write cycle time, TTL-compatible 5 V ±10% supply, and battery-backed data retention down to 2 V - used in real-time inter-processor communication systems requiring concurrent access without external logic.
For engineers reviewing the 7130LA55J/2930 datasheet, 7130LA55J/2930 pinout, 7130LA55J/2930 application, or 7130LA55J/2930 equivalent, key selection criteria include BUSY-flag arbitration timing (tBDD ≤ 55 ns), dual-port standby current (ISB3 = 0.2 mA typ.), and 48-pin ceramic flatpack package compatibility with legacy military avionics designs.
Technical Context
The 7130LA55J/2930 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, and supports interrupt flag generation (INTL/INTR) for cross-port signaling.
It features automatic power-down controlled by CE/CER, CMOS-level full-standby mode (ISB3), and data retention at 2 V with ICCDR ≤ 4000 µA (military grade). The device operates across –55°C to +125°C and complies with MIL-PRF-38535 QML Class V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact dual-access buffer storage |
| Access Time | 55 ns max (tAA, tACE, tAOE), supporting 18.2 MHz sustained dual-port throughput |
| Supply Voltage | 4.5–5.5 V DC, compatible with standard TTL logic rails and legacy 5 V systems |
| Data Retention | 2.0 V minimum (VDR), allowing backup from coin-cell or low-voltage hold-up circuits |
| Standby Current | 0.2 mA typical (ISB3, both ports CMOS-disabled), critical for low-power battery operation |
| Operating Temp | –55°C to +125°C (military grade), qualified per MIL-PRF-38535 QML Class V |
| Package | 48-pin ceramic flatpack (FP48), hermetically sealed for high-reliability aerospace use |
Pinout & Package
48-pin ceramic flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, hermetic seal, side-brazed leads, compliant with MIL-STD-1835.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | All four pins must be connected to system ground plane for noise immunity and thermal stability |
| VCC (Pins 23, 26) | Power supply | Both pins require local 0.1 µF ceramic decoupling to minimize switching noise |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls ISB1/ISB2/ISB4 current states |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z when deasserted for bus sharing |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of data flow on I/O lines |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Outputs indicate port contention; require external 4.7 kΩ pull-up to VCC |
| INTL / INTR | Interrupt flag (open-drain) | Signals cross-port events (e.g., address 3FF writes); also require pull-up |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit addressing per port; no internal latching - addresses must be stable before CE assertion |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel data path per port; high-impedance when OE or CE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoders or glue logic in MASTER/SLAVE configurations |
| Battery backup retention | Preserves data at 2 V with ≤4000 µA draw - enables seamless power-fail recovery in flight control units |
| Open-drain BUSY/INT outputs | Allows wired-OR connection of multiple devices for system-level contention resolution |
| Port-to-port interrupt signaling | Hardware-triggered INTL/INTR flags reduce software polling overhead in real-time OS environments |
| MIL-PRF-38535 QML Class V | Qualified for flight-critical applications with full lot traceability, screening, and burn-in |
Applications
| Avionics Data Buffering | Real-Time Inter-Processor Communication |
|---|---|
Use Scenario: Dual-CPU architecture in airborne mission computers where CPU-A writes telemetry while CPU-B reads for display and logging. IC Role / Device Role / Timing Role: 7130LA55J/2930 acts as MASTER dual-port SRAM with BUSY arbitration, ensuring atomic updates without software locks. Use Value: 55 ns access and tBDD ≤ 55 ns prevent race conditions during simultaneous access to shared status registers. | Use Scenario: Radar signal processor exchanging frame metadata with digital beamformer over shared memory. IC Role / Device Role / Timing Role: 7130LA55J/2930 provides asynchronous, lock-free memory with INTL/INTR flags for event-driven synchronization. Use Value: Hardware interrupt generation reduces latency vs. polling; enables sub-µs response to frame boundary events. |
| Military Vehicle Control Systems | Secure Bootloader Memory |
Use Scenario: Engine control unit (ECU) and vehicle dynamics controller coordinating torque distribution via shared state table. IC Role / Device Role / Timing Role: 7130LA55J/2930 serves as fault-tolerant shared memory with built-in contention detection and resolution. Use Value: Open-drain BUSY outputs allow daisy-chained arbitration across multiple ECUs in CAN-connected chassis networks. | Use Scenario: Secure boot ROM shadowing in encrypted FPGA configuration systems requiring tamper-resilient parameter storage. IC Role / Device Role / Timing Role: 7130LA55J/2930 stores decryption keys and integrity hashes with 2 V data retention during brown-out. Use Value: ISB3 = 0.2 mA typ. at full CMOS standby enables >10-year coin-cell backup life in unpowered storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-55JC | 55 ns access, 3.3 V supply only, no battery retention, PLCC-44 package | Requires level-shifting in 5 V legacy systems; unsuitable for MIL-STD-704A brown-out scenarios | Select only for new 3.3 V designs with space-constrained PCB layouts |
| IDT7140LA55J | SLAVE-only variant; no on-chip arbitration logic; BUSY pins are inputs only | Must be paired with IDT7130LA55J as MASTER; cannot operate standalone in arbitration-critical roles | Use only in 16-bit+ word-width expansions where 7130LA55J handles arbitration |
Compared with CY7C133-55JC and IDT7140LA55J, the 7130LA55J/2930 uniquely combines 5 V operation, on-chip arbitration, and 2 V data retention - making it irreplaceable in legacy military platforms requiring drop-in compatibility and power-fail resilience.
Availability
7130LA55J/2930 is available at Aetrix Electronics and suitable for avionics data buffering, real-time inter-processor communication, and military vehicle control systems requiring stable component supply across extended product lifecycles.
Supply support for 7130LA55J/2930 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 timing, memory interface, RF, and sensor solutions, now part of Renesas Electronics.
The IDT7130 family was designed specifically for high-reliability dual-access memory applications in aerospace, defense, and industrial control - emphasizing deterministic arbitration, wide temperature operation, and long-term obsolescence mitigation.
FAQ
What is the guaranteed data retention voltage for the 7130LA55J/2930?
The 7130LA55J/2930 guarantees data retention at VCC ≥ 2.0 V (VDR), with ICCDR ≤ 4000 µA under military-grade conditions (–55°C to +125°C). This enables reliable operation during brown-out events in flight-critical systems where backup power must sustain memory contents without refresh.
Does the 7130LA55J/2930 require external pull-up resistors on BUSY and INT pins?
Yes, the 7130LA55J/2930 features open-drain BUSYL, BUSYR, INTL, and INTR outputs. Each requires an external pull-up resistor (typically 4.7 kΩ to VCC) to assert HIGH logic levels. Failure to install pull-ups results in undefined arbitration behavior and missed interrupt signals.
Can the 7130LA55J/2930 operate as a standalone dual-port RAM without a SLAVE device?
Yes, the 7130LA55J/2930 functions as a complete standalone 1K × 8 dual-port SRAM. Its on-chip arbitration logic, BUSY outputs, and interrupt flags are fully operational without pairing. The SLAVE IDT7140 is optional and only required for 16-bit or wider data bus expansion.
What is the maximum operating temperature range certified for the 7130LA55J/2930?
The 7130LA55J/2930 is certified for –55°C to +125°C operation and manufactured in compliance with MIL-PRF-38535 QML Class V. This includes full screening, lot traceability, and extended burn-in - qualifying it for deployment in engine-mounted avionics and armored vehicle control units.
How does the 7130LA55J/2930 handle simultaneous write attempts to the same memory location?
The 7130LA55J/2930 uses hardware arbitration: if both ports attempt a write to the same address, the port that meets tAPS (arbitration priority setup time ≥5 ns) first wins. The losing port's BUSY output goes LOW, inhibiting its write. This deterministic resolution prevents data corruption without software intervention.
7130LA55J/2930 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130LA55J/2930 FAQ
1.How can I place an order for 7130LA55J/2930 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55J/2930 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 7130LA55J/2930 reliable?
The price and inventory of 7130LA55J/2930 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55J/2930 is usually 5 days.
3.What payment methods are accepted for 7130LA55J/2930?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55J/2930 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55J/2930?
7130LA55J/2930 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55J/2930 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 7130LA55J/2930?
For technical support, including 7130LA55J/2930 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55J/2930 requirements.
6.How does Aetrix verify that 7130LA55J/2930 is sourced from the original manufacturer or authorized distributors?
All 7130LA55J/2930 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 7130LA55J/2930 meets industry standards.
7.What is the process for return or replacement of 7130LA55J/2930?
All 7130LA55J/2930 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55J/2930, 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 7130LA55J/2930 part is unused and in its original packaging.
Return procedure for 7130LA55J/2930:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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