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Renesas 7130LA25JGI8
- Part No.:
- 7130LA25JGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA25JGI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:282
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Product details
Overview
7130LA25JGI8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 25 ns maximum access time, industrial temperature range (–40°C to +85°C), and battery-backed data retention down to 2.0 V. It enables concurrent asynchronous read/write access from independent left/right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130LA25JGI8 datasheet, 7130LA25JGI8 pinout, 7130LA25JGI8 application, or 7130LA25JGI8 equivalent, key selection criteria include dual-port arbitration timing (tBAA ≤ 25 ns), BUSY flag behavior for contention resolution, low standby current (1 µA typical full-standby), and compatibility with TTL-level 5V ±10% supply in space-constrained embedded control designs.
Technical Context
The 7130LA25JGI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves simultaneous access to the same memory location via BUSYL/BUSYR open-drain outputs (requiring external pull-ups) and supports port-to-port interrupt signaling using INTL/INTR pins.
It features automatic power-down controlled by CE/CER, supports battery backup with 2.0 V data retention (LA variant only), and delivers 110 mA typical dynamic operating current at fMAX. The device operates across –40°C to +85°C and complies with MIL-PRF-38535 QML for industrial-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact buffer or shared register file implementation |
| Access Time | 25 ns max (industrial grade), guaranteeing deterministic latency for real-time dual-CPU handshake protocols |
| Supply Voltage | 5.0 V ±10%, compatible with legacy 5V TTL logic families without level-shifting |
| Standby Current | 1 µA typical (ISB3, CMOS-level inputs), enabling ultra-low-power sleep modes in battery-backed systems |
| Data Retention | 2.0 V minimum VCC, allowing operation from coin-cell backup during main power loss |
| Operating Temp | –40°C to +85°C, qualified for industrial control, motor drives, and telecom line cards |
| Package | 48-pin ceramic flatpack (JGI), hermetically sealed for high-reliability, moisture-resistant deployment |
Pinout & Package
48-pin ceramic flatpack (FP48, package code JGI), body size ≈ 0.75 in × 0.75 in × 0.11 in, with side-brazed leads and hermetic seal for extended thermal and environmental stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins minimize ground bounce and ensure stable noise margin across both ports |
| VCC (Pin 26) | Power supply | Single 5V supply powers all internal logic and I/O drivers; requires local decoupling |
| CEL / CER | Chip enable (left/right) | Independent active-low enables allow selective port activation and power gating per port |
| OEL / OER | Output enable (left/right) | Asynchronous output control; high-Z when deasserted to prevent bus contention |
| R/WL / R/WR | Read/write direction (left/right) | Active-high for read, active-low for write - defines data flow direction per port |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Indicates port contention; requires external pull-up resistor to assert LOW during write conflict |
| INTL / INTR | Interrupt request (open-drain) | Signals completion of cross-port write or flag set/reset; requires pull-up for active-low signaling |
| A0L–A9L / A0R–A9R | Address inputs (10-bit each) | Two independent 10-bit address buses support full 1K addressing per port without multiplexing |
| I/O0L–I/O7L / I/O0R–I/O7R | Bi-directional data (8-bit each) | Separate 8-bit data paths eliminate multiplexing overhead and enable true concurrent access |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous writes to identical addresses without external logic, reducing BOM count and PCB area |
| Battery backup data retention | Maintains memory contents at 2.0 V supply, enabling seamless failover in UPS or backup power systems |
| Open-drain BUSY/INT outputs | Support wired-OR interrupt and arbitration signaling across multiple devices on shared buses |
| Full asynchronous dual-port operation | Eliminates clock domain crossing issues and enables direct integration with disparate microcontrollers or FPGAs |
| Industrial temperature qualification | Validated for continuous operation from –40°C to +85°C, meeting EN 60068-2 environmental stress requirements |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processor (DSP) Co-Processing |
|---|---|
Use Scenario: Two independent CPUs exchange status, commands, and sensor data via shared memory without software polling or OS intervention. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as synchronized mailbox with hardware arbitration, eliminating race conditions during concurrent access. Use Value: Reduces inter-CPU latency to ≤25 ns and eliminates need for semaphores or software locks, improving determinism in safety-critical control loops. | Use Scenario: A host MCU offloads FFT or filtering tasks to a dedicated DSP, sharing input buffers and result arrays in real time. IC Role / Device Role / Timing Role: Provides non-blocking, low-latency memory access for both processors - DSP reads input while MCU writes next frame. Use Value: Enables pipelined processing with zero wait states; 1 µA standby current extends battery life in portable test equipment. |
| Redundant Controller Systems | Industrial PLC Memory Buffering |
Use Scenario: Primary and backup controllers maintain identical state in mirrored memory; switchover occurs within microseconds upon fault detection. IC Role / Device Role / Timing Role: Serves as fault-tolerant shared state register bank with BUSY-driven write inhibition during transition. Use Value: Guarantees atomic state updates and prevents corruption during hot-swap events, satisfying IEC 61508 SIL-3 requirements. | Use Scenario: PLC CPU and fieldbus interface module share I/O image data for cyclic process monitoring and actuation. IC Role / Device Role / Timing Role: Dual-port buffer isolates real-time fieldbus timing from non-real-time HMI updates, preventing jitter-induced packet loss. Use Value: Eliminates DMA bottlenecks and ensures consistent 1 ms I/O scan cycles even under heavy HMI load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25-100AXI | 16-bit bus width, 100 MHz synchronous interface, no built-in arbitration logic | Requires external logic for contention management; suited for clocked system architectures | Select when migrating to higher-bandwidth synchronous designs with FPGA-based arbitration |
| AS7C31025B-25JCIN | Single-port architecture, 25 ns access, no BUSY/INT signals or dual-port arbitration | Lacks hardware interlock - relies on software coordination or external semaphore logic | Choose only if dual-port concurrency is unnecessary and cost reduction is primary driver |
Compared with CY7C1354V25-100AXI and AS7C31025B-25JCIN, the 7130LA25JGI8 uniquely delivers autonomous hardware arbitration, battery-retained state, and true asynchronous dual-port operation - making it irreplaceable in deterministic, low-power, real-time interprocessor systems where timing predictability and fail-safe data integrity are mandatory.
Availability
7130LA25JGI8 is available at Aetrix Electronics and suitable for real-time interprocessor communication, redundant controller systems, and industrial PLC memory buffering requiring stable component supply across extended product lifecycles.
Supply support for 7130LA25JGI8 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 company specializing in timing, memory interface, RF, and high-performance data conversion solutions.
The IDT7130 family was designed specifically for deterministic, low-latency interprocessor communication in industrial, military, and telecom infrastructure - emphasizing hardware arbitration, battery backup, and wide-temperature reliability over raw density or speed.
FAQ
What is the guaranteed maximum access time for the 7130LA25JGI8?
The 7130LA25JGI8 guarantees a maximum access time of 25 ns across its full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V), as specified in the AC Electrical Characteristics table for the 7130X25 speed grade. This value applies to tAA, tACE, and tAOE parameters under standard test conditions with 30 pF load.
Does the 7130LA25JGI8 support battery backup operation, and what is the minimum retention voltage?
Yes, the 7130LA25JGI8 supports battery backup operation as an LA-series device. It retains stored data down to a minimum VCC of 2.0 V, as confirmed in the Data Retention Characteristics table (VDR = 2.0 V min). This capability is exclusive to LA variants and not available in SA versions.
How does the BUSY arbitration mechanism work on the 7130LA25JGI8?
The 7130LA25JGI8 uses open-drain BUSYL and BUSYR outputs to signal port contention. When both ports attempt to write to the same address, the device asserts the corresponding BUSY pin LOW (requiring external pull-up), which internally inhibits the write on that port. Arbitration priority is determined by timing - the port meeting tAPS (5 ns setup) wins, ensuring deterministic resolution without external logic.
What package type is used for the 7130LA25JGI8, and what are its key mechanical properties?
7130LA25JGI8 uses a 48-pin ceramic flatpack (FP48) with package code JGI. Its body measures approximately 0.75 in × 0.75 in × 0.11 in, features side-brazed leads, and provides hermetic sealing for superior moisture resistance and long-term reliability in harsh industrial environments.
Can the 7130LA25JGI8 be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the 7130LA25JGI8 is exclusively a MASTER device. Only IDT7140-series parts function as SLAVE dual-port SRAMs. The 7130LA25JGI8 includes on-chip arbitration logic and BUSY outputs, whereas SLAVE devices (e.g., 7140LA25JGI8) accept BUSY as inputs and lack arbitration circuitry - they cannot substitute for MASTER functionality.
7130LA25JGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130LA25JGI8 FAQ
1.How can I place an order for 7130LA25JGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA25JGI8 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 7130LA25JGI8 reliable?
The price and inventory of 7130LA25JGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA25JGI8 is usually 5 days.
3.What payment methods are accepted for 7130LA25JGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA25JGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA25JGI8?
7130LA25JGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA25JGI8 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 7130LA25JGI8?
For technical support, including 7130LA25JGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA25JGI8 requirements.
6.How does Aetrix verify that 7130LA25JGI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA25JGI8 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 7130LA25JGI8 meets industry standards.
7.What is the process for return or replacement of 7130LA25JGI8?
All 7130LA25JGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA25JGI8, 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 7130LA25JGI8 part is unused and in its original packaging.
Return procedure for 7130LA25JGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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