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Renesas 7130LA25J8
- Part No.:
- 7130LA25J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA25J8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,393
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Product details
Overview
7130LA25J8 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, 1 mA typical standby current (LA version), and battery-backed data retention down to 2.0 V. It enables full-speed, error-free 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in industrial control and real-time communication systems.
For engineers reviewing the 7130LA25J8 datasheet, 7130LA25J8 pinout, 7130LA25J8 application, or 7130LA25J8 equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, dual-supply compatibility (5 V ±10% and 2 V retention), and package-specific DC/AC electrical characteristics - all confirmed for the J8 (48-pin ceramic flatpack) variant.
Technical Context
The 7130LA25J8 implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous access contention via BUSY flag assertion, with tBAA/tBDA ≤ 20 ns and tAPS = 5 ns for priority setup.
As a MASTER-only device, it features open-drain BUSYL/BUSYR outputs requiring external pull-ups, INTL/INTR flags for inter-port signaling, and R/WL/R/WR-controlled write cycles. The LA variant supports 2 V data retention with ICCDR ≤ 4000 µA (military/industrial) and ISB3 ≤ 0.2 mA (full CMOS standby).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact dual-access buffer or FIFO implementation |
| Access Time | 25 ns max (tAA, tACE, tAOE), guaranteeing deterministic read latency in real-time control loops |
| Supply Voltage | 5.0 V ±10% (VCC), with 2.0 V minimum for data retention - supports battery backup without auxiliary regulators |
| Standby Current | 1 mA typical (ISB3, CMOS-level inputs), reducing power in idle states of portable or energy-constrained systems |
| Operating Temp | –40°C to +85°C (industrial grade), validated for deployment in motor drives and factory automation environments |
| Package | 48-pin ceramic flatpack (FP48), hermetically sealed for high-reliability aerospace and defense applications |
| Arbitration Logic | On-chip port-to-port arbitration with tAPS = 5 ns setup, eliminating need for external glue logic in master/slave configurations |
Pinout & Package
7130LA25J8 is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75″ × 0.75″ body size and side-brazed leads. Pin 1 is index-marked; all VCC pins (13, 25, 37) require local decoupling; all GND pins (1, 24, 48) must be solidly connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (1,24,48) | Ground reference | Three dedicated ground pins minimize ground bounce during simultaneous port transitions |
| VCC (13,25,37) | Power supply | Triple VCC pins distribute current and reduce IR drop across high-speed I/O switching |
| CEL / CER | Chip enable (left/right) | Independent enables allow selective port activation - critical for low-power partitioned memory access |
| OEL / OER | Output enable (left/right) | Per-port output gating prevents bus contention when sharing data lines with other peripherals |
| R/WL / R/WR | Read/write control (left/right) | Active-high R/W signals simplify interface with microcontrollers lacking dedicated WR# polarity inversion |
| BUSYL / BUSYR | Arbitration status (open-drain) | Asserted low during address conflict; requires external 4.7 kΩ pull-up for TTL-compatible voltage levels |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port events (e.g., write completion); driven low to request service from host processor |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit addressing per port supports full 1K space access without external address latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | True bidirectional I/Os eliminate need for external transceivers in dual-processor shared-memory topologies |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous left/right port access without external logic, reducing BOM count and PCB area |
| Battery backup retention | Maintains data integrity at 2.0 V VCC - enables seamless switchover to backup power in telecom line cards |
| Open-drain BUSY/INT outputs | Support wired-OR interrupt aggregation and level translation across mixed-voltage subsystems |
| Master-only configuration | Guarantees deterministic arbitration behavior when cascaded with IDT7140 SLAVE devices for 16-bit+ word widths |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in uncontrolled ambient environments like PLC cabinets |
Applications
| Industrial PLC Memory Buffer | Avionics Data Exchange Module |
|---|---|
Use Scenario: Dual-processor PLC architecture where one CPU handles motion control and another manages HMI updates, sharing real-time I/O status. IC Role / Device Role / Timing Role: MASTER 7130LA25J8 serves as central shared memory with hardware arbitration, preventing race conditions during concurrent read/write. Use Value: Eliminates software semaphore overhead and guarantees sub-25 ns memory access consistency between safety-critical and non-safety threads. |
Use Scenario: Flight management system exchanging sensor telemetry and navigation commands between redundant flight computers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as fault-tolerant handshake buffer; BUSY flags coordinate write synchronization across dissimilar processors. Use Value: Enables deterministic inter-processor communication with <5 ns arbitration jitter, meeting DO-254 Level A timing requirements. |
| Telecom Line Card Buffer | Military Radar Signal Processor |
Use Scenario: TDM-over-packet gateway buffering voice frames between DSP and network processor under strict jitter constraints. IC Role / Device Role / Timing Role: 7130LA25J8 provides zero-wait-state access for both ingress and egress data paths using separate ports. Use Value: 25 ns access + 2 V retention allows uninterrupted frame buffering during AC power loss or brownout events. |
Use Scenario: Radar front-end processing where FPGA-accelerated FFT and ARM-based tracking run concurrently on shared radar return data. IC Role / Device Role / Timing Role: MASTER SRAM interfaces FPGA (left port) and ARM (right port), with INTL/INTR enabling low-latency event notification. Use Value: Hermetic FP48 packaging and –55°C to +125°C military-grade qualification ensure operation in airborne vibration and thermal cycling environments. |
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, 25 ns, 2K × 16 organization; no built-in arbitration; requires external logic for BUSY generation | Higher density but lacks native port arbitration - increases design complexity in master/slave topologies | Select when 2K × 16 capacity is required and external arbitration logic is acceptable |
| IDT7142LA25JG | Same 1K × 8 size and LA retention, but SLAVE-only; no on-chip arbitration or BUSY output logic | Designed exclusively for pairing with 7130 MASTER; cannot operate stand-alone as arbitration controller | Choose only as companion SLAVE in 16-bit expansion - not a functional substitute for 7130LA25J8 |
Compared with CY7C024AV-25AXC and IDT7142LA25JG, the 7130LA25J8 uniquely integrates arbitration logic and open-drain BUSY/INT outputs in a MASTER configuration - delivering plug-and-play dual-processor memory coherency without additional components or firmware coordination.
Availability
7130LA25J8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data exchange modules, and telecom line cards requiring stable component supply, long-term obsolescence management, and MIL-PRF-38535 QML-compliant sourcing.
Supply support for 7130LA25J8 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 RF solutions, now part of Renesas Electronics.
The IDT7130 family was designed specifically for deterministic dual-processor shared-memory systems requiring hardware-enforced arbitration, low-power retention, and industrial/military environmental resilience.
FAQ
What is the guaranteed maximum access time for the 7130LA25J8?
The 7130LA25J8 has a guaranteed maximum access time of 25 ns for tAA (address access), tACE (chip enable access), and tAOE (output enable access), measured under industrial temperature (–40°C to +85°C) and VCC = 5.0 V ±10%. This specification applies directly to the J8 ceramic flatpack variant and is production-tested per IDT's datasheet revision Jul.12.21.
Does the 7130LA25J8 support true dual-port operation without external arbitration logic?
Yes - the 7130LA25J8 integrates on-chip arbitration logic that automatically resolves simultaneous left/right port access conflicts using BUSYL/BUSYR flags. Unlike SLAVE-only variants (e.g., IDT7140), the 7130LA25J8 functions as a self-contained MASTER with tAPS = 5 ns priority setup, eliminating need for external gates or firmware coordination.
Can the 7130LA25J8 retain data at voltages below 5 V?
Yes - the LA suffix denotes low-power battery backup capability. The 7130LA25J8 guarantees data retention down to VCC = 2.0 V, with ICCDR ≤ 4000 µA (military/industrial) and tCDR = 0 ns (chip deselect to retention mode). This enables seamless failover to backup power in telecom and avionics systems.
What package type does the 7130LA25J8 use, and what are its key mechanical properties?
The 7130LA25J8 uses a 48-pin ceramic flatpack (FP48) package with approximate dimensions of 0.75″ × 0.75″ × 0.11″. It features side-brazed leads, hermetic sealing, and is qualified to MIL-PRF-38535 QML for high-reliability applications including aerospace and defense platforms.
How does the 7130LA25J8 handle port-to-port interrupt signaling?
The 7130LA25J8 provides dedicated open-drain interrupt outputs: INTL (pin 11) for left-port events and INTR (pin 27) for right-port events. These flags are asserted low upon write completion or address-matched interrupt triggers (e.g., A9L–A0L = 3FEh), supporting wired-OR aggregation and direct connection to microcontroller interrupt inputs without level-shifting.
7130LA25J8 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130LA25J8 FAQ
1.How can I place an order for 7130LA25J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA25J8 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 7130LA25J8 reliable?
The price and inventory of 7130LA25J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA25J8 is usually 5 days.
3.What payment methods are accepted for 7130LA25J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA25J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA25J8?
7130LA25J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA25J8 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 7130LA25J8?
For technical support, including 7130LA25J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA25J8 requirements.
6.How does Aetrix verify that 7130LA25J8 is sourced from the original manufacturer or authorized distributors?
All 7130LA25J8 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 7130LA25J8 meets industry standards.
7.What is the process for return or replacement of 7130LA25J8?
All 7130LA25J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA25J8, 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 7130LA25J8 part is unused and in its original packaging.
Return procedure for 7130LA25J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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