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Renesas 7130LA25J
- Part No.:
- 7130LA25J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA25J.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,253
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Product details
Overview
7130LA25J 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, 25ns maximum access time, 1mW standby power, and battery-backed data retention down to 2V. It enables concurrent read/write access from independent left/right ports in real-time control systems requiring deterministic memory arbitration.
For engineers reviewing the 7130LA25J datasheet, 7130LA25J pinout, 7130LA25J application, or 7130LA25J equivalent, this page delivers verified timing parameters, port-to-port BUSY/INT signaling behavior, industrial temperature support (–40°C to +85°C), DIP/LCC/PLCC/TQFP package options, and master-slave expansion capability with IDT7140LA.
Technical Context
The 7130LA25J 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 contention via BUSYL/BUSYR open-drain outputs-asserted when address matches occur-and supports priority-based write inhibition without external logic.
It features TTL-compatible 5V ±10% single-supply operation, automatic power-down controlled by CE pins per port, and battery backup mode enabling 2V data retention. The device is fabricated in CMOS technology and supports MASTER-only functions including BUSY flag generation and INTL/INTR interrupt signaling for inter-port communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 (1024 words × 8 bits), dual-port SRAM with independent left/right address/data/control |
| Access Time (tAA) | 25 ns max - guarantees deterministic read latency for real-time embedded control loops |
| Standby Current (ISB3) | 0.2 µA typ. - enables ultra-low-power battery backup operation at 2V |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5V TTL logic families and industrial power rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Bus Arbitration | On-chip port-to-port arbitration with BUSY output and tAPS = 5 ns setup - eliminates need for external glue logic |
| Data Retention | 2.0 V minimum - preserves memory contents during main power loss using backup battery |
Pinout & Package
7130LA25J is available in 48-pin DIP (PDG48/SB48), 48-pin LCC (LC48), 48-pin ceramic flatpack (FP48), 52-pin PLCC (PLG52), and 64-pin TQFP/STQFP (PPG64/PNG64) packages. Pin functions are identical across all variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | All four GND pins must be connected to system ground plane for noise immunity and thermal dissipation |
| VCC (Pins 23, 26) | Power supply | Both VCC pins require local 0.1 µF decoupling to minimize switching noise on 5V rail |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls ISB1/ISB2/ISB3 standby current states |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z state reduces bus loading during idle cycles |
| R/WL / R/WR | Read/write direction (left/right) | High = read, low = write; determines data flow direction on bidirectional I/O lines |
| BUSYL / BUSYR | Arbitration status flag (open-drain) | Requires external pull-up; asserts low when opposite port accesses same address - blocks writes |
| INTL / INTR | Interrupt request (open-drain) | Used for port-to-port signaling; e.g., INTL set by right-port write to address 0x3FE |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address bus per port; supports full 1K address space independently |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel data path per port; high-impedance when OE inactive or CE deasserted |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access conflicts deterministically via BUSY assertion - no external arbitration IC required |
| 2V data retention mode | Preserves stored data during main power failure using backup battery - critical for nonvolatile control state storage |
| Master-only BUSY/INT functionality | Generates BUSY flags and supports INTL/INTR interrupts - enables coordinated multi-processor memory sharing |
| Low-power LA variant | 1 mW typical standby power (vs. 5 mW in SA version) - extends battery life in portable or remote systems |
| Industrial temperature range | –40°C to +85°C operation without performance degradation - suitable for factory automation and transportation electronics |
Applications
| Industrial Motion Controller | Avionics Data Buffer |
|---|---|
Use Scenario: Real-time servo loop updates shared position/velocity data between FPGA motion engine and microcontroller host. IC Role / Device Role / Timing Role: MASTER dual-port SRAM provides atomic read/write access with BUSY arbitration to prevent race conditions during concurrent access. Use Value: 25ns access time ensures sub-microsecond memory response; 2V retention preserves last known safe position during brownout. |
Use Scenario: Buffering sensor telemetry between flight computer (left port) and display processor (right port) in certified avionics units. IC Role / Device Role / Timing Role: Dual-port interface enables lock-free data exchange; INTL/INTR signals coordinate frame synchronization. Use Value: Industrial-grade temp range and MIL-PRF-38535 QML compliance meet DO-254/DO-178C hardware assurance requirements. |
| Telecom Line Card | Medical Imaging Subsystem |
Use Scenario: Shared memory between DSP (left port) and ARM host (right port) in packet processing line cards with strict jitter budgets. IC Role / Device Role / Timing Role: MASTER arbitration prevents write collisions during bursty traffic; CE-controlled power-down reduces thermal load. Use Value: 1mW standby current minimizes board-level heat generation; 48-pin DIP option simplifies manual rework in high-reliability assemblies. |
Use Scenario: Frame buffering between image acquisition ASIC (left port) and display controller (right port) in ultrasound machines. IC Role / Device Role / Timing Role: Independent port timing allows pipelined acquisition/display without FIFO logic; BUSY flags ensure pixel integrity. Use Value: Deterministic 25ns access enables real-time rendering of 30 fps B-mode video; low leakage (<5 µA) maintains data fidelity over long idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1371DV25 | 3.3V core, 25ns access, 1M × 18 organization - larger density but incompatible voltage and bus width | Requires level-shifting and bus multiplexing for 5V legacy systems | Choose only if migrating to 3.3V architecture and needing >1K depth |
| IDT7140LA25J | SLAVE-only dual-port; lacks on-chip arbitration, BUSY output, and INT signaling - requires pairing with 7130LA25J as MASTER | Cannot operate standalone; used only to expand data bus to 16+ bits in MASTER/SLAVE configuration | Select when building 16-bit word systems where 7130LA25J serves as MASTER controller |
Compared with CY7C1371DV25 and IDT7140LA25J, the 7130LA25J uniquely delivers 5V-compatible MASTER arbitration, 2V retention, and industrial temperature support in a drop-in-capable 48-pin footprint - making it irreplaceable for legacy 5V real-time control designs requiring deterministic dual-port behavior.
Availability
7130LA25J is available at Aetrix Electronics and suitable for industrial motion controllers, avionics data buffers, and telecom line cards requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 7130LA25J 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance computing solutions before its acquisition by Renesas Electronics in 2019.
The IDT7130/7140 family was designed specifically for deterministic real-time systems requiring concurrent memory access - targeting industrial automation, aerospace, and telecom infrastructure where arbitration latency and data integrity are mission-critical.
FAQ
What is the difference between 7130LA25J and 7140LA25J?
The 7130LA25J is a MASTER dual-port SRAM with on-chip arbitration logic, BUSY output flags, and INTL/INTR interrupt generation. The 7140LA25J is a SLAVE device lacking arbitration circuitry - it accepts BUSY input but cannot generate it. In MASTER/SLAVE configurations, 7130LA25J manages contention while 7140LA25J expands data width. Both share identical 25ns access time and 2V retention.
Does 7130LA25J support battery backup operation?
Yes, the 7130LA25J supports true battery backup operation with guaranteed data retention at VCC = 2.0V (min), consuming ≤4000 µA in military grade and ≤1500 µA in commercial grade. This mode activates automatically when main supply drops below threshold, preserving all 1K × 8 memory contents without software intervention.
What package options are available for 7130LA25J?
The 7130LA25J is offered in five package types: 48-pin plastic DIP (PDG48), 48-pin side-braze DIP (SB48), 48-pin LCC (LC48), 48-pin ceramic flatpack (FP48), 52-pin PLCC (PLG52), and 64-pin TQFP/STQFP (PPG64/PNG64). All share identical pinout and electrical characteristics - selection depends on thermal, mechanical, and assembly requirements.
How does BUSY arbitration work on 7130LA25J?
When both ports attempt to access the same memory address, the 7130LA25J asserts BUSYL or BUSYR (open-drain) low after tBAA (≤20ns), blocking writes on the contending port. The winning port is determined by which address/control signals stabilize first relative to tAPS (5ns setup). No external logic is needed - arbitration is fully internal and deterministic.
Is 7130LA25J compliant with military specifications?
The 7130LA25J is not itself a QML-certified military part, but the IDT7130LA family is manufactured under MIL-PRF-38535 QML for selected speed grades and packages. The 7130LA25J variant is rated for industrial temperature (–40°C to +85°C); QML versions carry distinct suffixes (e.g., 7130LA25JQ) and require separate qualification documentation.
7130LA25J 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:
- 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)
7130LA25J FAQ
1.How can I place an order for 7130LA25J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA25J 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 7130LA25J reliable?
The price and inventory of 7130LA25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA25J is usually 5 days.
3.What payment methods are accepted for 7130LA25J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA25J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA25J?
7130LA25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA25J 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 7130LA25J?
For technical support, including 7130LA25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA25J requirements.
6.How does Aetrix verify that 7130LA25J is sourced from the original manufacturer or authorized distributors?
All 7130LA25J 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 7130LA25J meets industry standards.
7.What is the process for return or replacement of 7130LA25J?
All 7130LA25J units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA25J, 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 7130LA25J part is unused and in its original packaging.
Return procedure for 7130LA25J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA25J Tags
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