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Renesas 7130LA25JI8
- Part No.:
- 7130LA25JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA25JI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,858
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Product details
Overview
7130LA25JI8 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, 2V data retention capability, and industrial temperature range (–40°C to +85°C). It enables concurrent asynchronous read/write access from left and right ports in real-time control systems requiring deterministic memory sharing.
For engineers reviewing the 7130LA25JI8 datasheet, 7130LA25JI8 pinout, 7130LA25JI8 application, or 7130LA25JI8 equivalent, key selection criteria include BUSY-flag arbitration timing (tBAA ≤ 25 ns), dual-port standby current (ISB3 = 0.2 mA typ.), battery-backed data retention at 2V, and compatibility with IDT7140SLAVE devices for 16-bit expansion.
Technical Context
The 7130LA25JI8 implements fully asynchronous dual-port operation with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY output flags (BUSYL/BUSYR), open-drain outputs requiring external pull-ups, and priority set-up time tAPS = 5 ns.
It supports R/W-controlled and CE-controlled write cycles, features INTL/INTR interrupt signaling for inter-port communication, and enters full standby (ISB3 = 0.2 mA typ.) when both chip enables are held above VCC − 0.2 V with CMOS-level inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact buffer or register-file implementation |
| Access Time | 25 ns max (industrial grade), guaranteeing deterministic latency in real-time control loops |
| Data Retention Voltage | 2.0 V min, supporting battery backup without external regulators |
| Standby Current (ISB3) | 0.2 mA typical at VCC = 5 V, enabling ultra-low-power hold mode during system sleep |
| Operating Temperature | –40°C to +85°C, qualified for industrial embedded environments without derating |
| Supply Voltage | 4.5 V to 5.5 V, compatible with standard TTL/CMOS 5 V rails |
| Arbitration tAPS | 5 ns minimum priority setup time, ensuring reliable port-to-port conflict resolution |
Pinout & Package
7130LA25JI8 is packaged in a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ body size and side-brazed leads. Pin assignments are validated per IDT document 2689 drw 03F.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure low-impedance return paths for both ports |
| VCC (Pin 25) | Power supply | Single 5 V supply powers entire dual-port core and arbitration logic |
| CEL / CER | Chip enable (left/right) | Independent enables allow selective port activation and power gating |
| OEL / OER | Output enable (left/right) | Controls I/O bus directionality and high-impedance state per port |
| R/WL / R/WR | Read/write control (left/right) | Determines data flow direction independently on each port |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Indicates port contention; requires external pull-up for proper logic level |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port events (e.g., write completion); requires pull-up |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit addressing per port supports full 1K memory space access |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data buses with separate control per port |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in multi-processor shared-memory designs |
| Battery-backed data retention | Preserves memory contents at 2 V supply, enabling seamless power-loss recovery |
| Open-drain BUSY/INT outputs | Allows wired-OR connection of multiple dual-ports for scalable arbitration networks |
| Master-only BUSY generation | Enables hierarchical memory systems where 7130LA25JI8 coordinates access for itself and IDT7140 slaves |
| Asynchronous dual-port operation | Permits independent clock domains or event-driven access without synchronization overhead |
Applications
| Industrial PLC Data Exchange | Avionics Sensor Fusion Buffer |
|---|---|
Use Scenario: Two independent CPU cores (e.g., safety and control) share sensor calibration tables and status registers in real time. IC Role / Device Role / Timing Role: MASTER dual-port SRAM providing atomic read-modify-write access with BUSY-flag arbitration and 25 ns deterministic latency. Use Value: Eliminates software locks and polling; ensures data coherency without CPU intervention or added logic. | Use Scenario: Radar and inertial measurement units feed time-stamped data into a common buffer for fusion processing under DO-254 constraints. IC Role / Device Role / Timing Role: Dual-port memory acting as time-aligned data staging area with interrupt-driven notification of new samples. Use Value: Enables lock-free, cycle-accurate timestamp correlation between heterogeneous sensor streams. |
| Military Radios Baseband Processing | Medical Imaging Real-Time FIFO |
Use Scenario: Digital signal processor and host microcontroller exchange encrypted voice packets and channel parameters in secure comms gear. IC Role / Device Role / Timing Role: MASTER SRAM with INTL/INTR signaling synchronizing packet handoff and status updates. Use Value: Guarantees zero-latency inter-processor communication while maintaining MIL-PRF-38535 QML compliance. | Use Scenario: Ultrasound beamformer ASIC and ARM-based display controller stream pixel data with precise frame alignment. IC Role / Device Role / Timing Role: Dual-port FIFO buffer absorbing bursty acquisition data and smoothing display output timing. Use Value: Prevents dropped frames during high-resolution scan modes by decoupling acquisition and rendering clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-25AXC | 5 V, 1K × 16, 25 ns, no built-in arbitration logic; requires external BUSY management | Requires discrete logic for port contention resolution; not drop-in for MASTER role | Select only if 16-bit bus width is mandatory and arbitration can be implemented externally |
| IDT7140LA25JI8 | SLAVE variant; BUSY inputs only (no arbitration logic); identical timing and retention specs | Cannot operate standalone; must pair with 7130LA25JI8 in MASTER/SLAVE configuration | Use exclusively as companion SLAVE to expand data width beyond 8 bits |
Compared with CY7C024AV-25AXC and IDT7140LA25JI8, the 7130LA25JI8 uniquely integrates arbitration logic and operates as a self-contained MASTER, eliminating external components required by the Cypress part and enabling autonomous coordination unavailable in the SLAVE-only IDT7140.
Availability
7130LA25JI8 is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and military communications equipment requiring stable component supply, long-term lifecycle support, and guaranteed MIL-PRF-38535 QML qualification.
Supply support for 7130LA25JI8 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 timing, memory, and interface solutions, now part of Renesas Electronics.
The IDT7130/7140 family was designed specifically for deterministic, low-latency shared-memory architectures in real-time embedded systems requiring concurrent access, hardware arbitration, and battery-backed data integrity.
FAQ
What is the function of BUSYL and BUSYR on the 7130LA25JI8?
BUSYL and BUSYR are open-drain arbitration flag outputs on the 7130LA25JI8. When asserted LOW, they indicate that the corresponding port (left or right) is currently accessing a memory location contested by the opposite port. Each requires an external pull-up resistor to VCC to establish valid HIGH logic levels. These signals enable hardware-coordinated access without software intervention.
Does the 7130LA25JI8 support true simultaneous read operations on both ports?
Yes, the 7130LA25JI8 supports fully asynchronous, simultaneous reads from both left and right ports without BUSY assertion or performance penalty. BUSY flags are only activated during port-to-port write contention. Valid data appears after tAA (≤25 ns) on each port independently, enabling parallel data fetching in dual-CPU systems.
Can the 7130LA25JI8 retain data at 2V while powered entirely from a battery?
Yes - the 7130LA25JI8 LA version guarantees data retention down to VCC = 2.0 V, drawing only 100 µA typical (up to 4000 µA max) in this mode. This allows direct connection to a lithium-thionyl chloride or primary lithium cell without regulation, preserving memory contents during main power loss in mission-critical systems.
How does the 7130LA25JI8 differ from the IDT7140LA25JI8 in system architecture?
The 7130LA25JI8 is a MASTER device with on-chip arbitration logic and BUSY outputs, while the IDT7140LA25JI8 is a SLAVE with BUSY inputs only and no arbitration circuitry. The 7130LA25JI8 can operate standalone or coordinate multiple SLAVE devices; the 7140LA25JI8 must always be paired with a 7130-series MASTER to resolve contention and cannot function autonomously.
What package type is used for the 7130LA25JI8 part number ending in 'JI8'?
The suffix 'JI8' denotes a 48-pin ceramic flatpack (FP48) package with side-brazed leads, measuring approximately 0.75 inch × 0.75 inch × 0.11 inch. This hermetic package meets MIL-PRF-38535 QML requirements and provides superior thermal stability and moisture resistance for industrial and military applications.
7130LA25JI8 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:
- 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)
7130LA25JI8 FAQ
1.How can I place an order for 7130LA25JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA25JI8 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 7130LA25JI8 reliable?
The price and inventory of 7130LA25JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA25JI8 is usually 5 days.
3.What payment methods are accepted for 7130LA25JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA25JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA25JI8?
7130LA25JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA25JI8 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 7130LA25JI8?
For technical support, including 7130LA25JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA25JI8 requirements.
6.How does Aetrix verify that 7130LA25JI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA25JI8 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 7130LA25JI8 meets industry standards.
7.What is the process for return or replacement of 7130LA25JI8?
All 7130LA25JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA25JI8, 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 7130LA25JI8 part is unused and in its original packaging.
Return procedure for 7130LA25JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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