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Renesas 7130LA100JI8
- Part No.:
- 7130LA100JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA100JI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,240
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Product details
Overview
7130LA100JI8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 100ns maximum read/write cycle time, TTL-compatible 5V ±10% operation, and 2V battery-backed data retention - used in real-time inter-processor communication systems requiring concurrent access to shared memory.
For engineers reviewing the 7130LA100JI8 datasheet, 7130LA100JI8 pinout, 7130LA100JI8 application, or 7130LA100JI8 equivalent, key selection criteria include dual-port arbitration timing (tBAA/tBDD), BUSY flag behavior, low-power standby current (1µA full standby), and industrial temperature support (–40°C to +85°C).
Technical Context
The 7130LA100JI8 implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via BUSY output assertion and priority set-up timing (tAPS = 5ns), enabling deterministic conflict resolution without external logic.
It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSY/INT outputs requiring pull-up resistors, and provides interrupt flag generation (INTL/INTR) for port-to-port signaling - all while maintaining 2V data retention in battery backup mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), dual-access memory array |
| Access Time | 100ns max read cycle time (tRC), enabling synchronous interface with 10MHz bus systems |
| Supply Voltage | 5.0V ±10% (4.5V–5.5V), single-rail TTL-compatible operation |
| Standby Current | 1µA typical full standby (ISB3, CMOS-level inputs), critical for battery-backed systems |
| Data Retention | 2.0V minimum VCC for data retention (VDR), supporting long-term backup without main power |
| Operating Temp | –40°C to +85°C industrial grade, qualified per MIL-PRF-38535 QML for reliability |
| Package | 48-pin ceramic flatpack (FP48), hermetically sealed for harsh environments |
Pinout & Package
7130LA100JI8 is housed in a 48-pin ceramic flatpack (FP48) package with 0.75″ × 0.75″ footprint and 0.11″ height, featuring hermetic sealing and gold-plated leads for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable reference and reduce noise coupling between ports |
| VCC (Pin 25) | Power supply | Single 5V supply pin; all VCC pins must be connected to decoupled 5V rail |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls dynamic/standby current states (ISB1–ISB4) |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; when high, I/Os enter high-Z state (tHZ ≤ 40ns) |
| R/WL / R/WR | Read/write control (left/right) | Active-low write; determines direction of data flow on associated port |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs indicate port contention; require external pull-up; assert during address match to block writes |
| INTL / INTR | Interrupt flag (open-drain) | Set/reset by specific address writes (e.g., A9–A0 = 3FFh); signal inter-port events |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses (0–1023) for independent memory addressing per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data paths; high-Z when OE inactive or during write setup/hold |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoders or glue logic in multi-processor shared-memory designs |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt and arbitration signaling across multiple devices on same bus |
| 2V data retention mode | Preserves memory contents during main power loss using backup battery, critical for fault-tolerant systems |
| Master-only BUSY flag | 7130LA100JI8 functions as MASTER; BUSY outputs drive contention resolution - unlike SLAVE 7140 which accepts BUSY as input |
| Industrial temperature range | Rated for –40°C to +85°C operation, validated across full voltage and timing specs |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without software coordination. IC Role / Device Role / Timing Role: 7130LA100JI8 acts as MASTER dual-port SRAM, providing simultaneous read/write access with hardware arbitration to prevent data corruption. Use Value: Eliminates polling or semaphore overhead; tBDD ≤ 65ns ensures rapid resolution of port conflicts during burst transfers. | Use Scenario: DSP core writes processed audio frames into memory while host processor reads them for playback or storage. IC Role / Device Role / Timing Role: 7130LA100JI8 serves as low-latency buffer with independent left/right ports synchronized to separate clock domains. Use Value: 100ns tRC and tWC allow sustained 10MB/s throughput; 2V retention preserves last frame during power interruption. |
| Avionics Data Logging Interface | Industrial PLC Memory Coherency |
Use Scenario: Flight data recorder captures telemetry from multiple sensors while maintenance system reads logs for diagnostics. IC Role / Device Role / Timing Role: 7130LA100JI8 operates as MASTER SRAM with BUSY-driven arbitration, ensuring deterministic access under EMI stress. Use Value: Ceramic FP48 package withstands vibration/thermal cycling; ISB3 = 1µA extends battery life in backup mode. | Use Scenario: Programmable logic controller uses dual CPUs for redundancy - both monitor I/O but only one writes to shared configuration memory. IC Role / Device Role / Timing Role: 7130LA100JI8 enforces write exclusivity via BUSY assertion, preventing race conditions during failover. Use Value: tAPS = 5ns guarantees arbitration priority setup; INTL/INTR flags signal state transitions without polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C130-100JC | 1K × 8, 100ns, 5V, but no on-chip arbitration logic; requires external BUSY management | Lacks integrated port arbitration - unsuitable where deterministic conflict resolution is required without added logic | Select only if external arbitration circuitry is already present and board space allows |
| 7140LA100JI8 | Same speed/package, but SLAVE-only: BUSY pins are inputs, no arbitration logic, no INT generation | Designed exclusively for expansion with 7130 MASTER; cannot operate stand-alone as arbitration node | Use only as companion SLAVE in 16-bit+ bus width systems with 7130LA100JI8 as MASTER |
Compared with CY7C130-100JC and 7140LA100JI8, the 7130LA100JI8 uniquely integrates arbitration, interrupt, and battery-retention functions in a single industrial-grade device - reducing BOM count and eliminating timing-critical external logic.
Availability
7130LA100JI8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, avionics data logging, and industrial PLC memory coherency requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for 7130LA100JI8 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 communications, computing, and industrial markets.
The 7130LA100JI8 belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency shared-memory architectures in mission-critical embedded systems.
FAQ
What is the function of BUSYL and BUSYR on the 7130LA100JI8?
On the 7130LA100JI8, BUSYL and BUSYR are open-drain arbitration status outputs that go LOW when address contention is detected on the respective port. They require external pull-up resistors and block write operations to the contended port until deasserted. This behavior is exclusive to the MASTER 7130LA100JI8 - SLAVE devices accept BUSY as inputs.
Does the 7130LA100JI8 support true simultaneous read/write operations?
Yes - the 7130LA100JI8 supports fully asynchronous, independent read and write operations on left and right ports. However, simultaneous access to the same memory location triggers arbitration via BUSY outputs, ensuring deterministic resolution without data corruption.
What is the minimum supply voltage for data retention on the 7130LA100JI8?
The 7130LA100JI8 guarantees data retention down to 2.0V (VDR), verified per datasheet Table 7. At this voltage, ICCDR is ≤4000µA (military/industrial) or ≤1500µA (commercial), enabling reliable battery backup operation during main power loss.
Can the 7130LA100JI8 be used without external pull-up resistors on BUSY and INT pins?
No - BUSYL, BUSYR, INTL, and INTR are open-drain outputs on the 7130LA100JI8 and require external pull-up resistors (typically 4.7kΩ to VCC) to establish valid HIGH logic levels. Omitting pull-ups results in undefined or floating states, disrupting arbitration and interrupt functionality.
Is the 7130LA100JI8 pin-compatible with other speed grades in the 7130LA family?
Yes - all 7130LA variants (e.g., 7130LA25JI8, 7130LA55JI8, 7130LA100JI8) share identical FP48 pinout, electrical interface, and functional architecture. Only timing parameters (tRC, tAA, etc.) differ; PCB layout and firmware remain unchanged across speed grades.
7130LA100JI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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:
- 100ns
- Access Time:
- 100 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)
7130LA100JI8 FAQ
1.How can I place an order for 7130LA100JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA100JI8 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 7130LA100JI8 reliable?
The price and inventory of 7130LA100JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA100JI8 is usually 5 days.
3.What payment methods are accepted for 7130LA100JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA100JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA100JI8?
7130LA100JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA100JI8 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 7130LA100JI8?
For technical support, including 7130LA100JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA100JI8 requirements.
6.How does Aetrix verify that 7130LA100JI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA100JI8 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 7130LA100JI8 meets industry standards.
7.What is the process for return or replacement of 7130LA100JI8?
All 7130LA100JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA100JI8, 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 7130LA100JI8 part is unused and in its original packaging.
Return procedure for 7130LA100JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA100JI8 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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