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Renesas 7130SA25J
- Part No.:
- 7130SA25J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA25J.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,654
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Product details
Overview
7130SA25J from IDT 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 (commercial/industrial/military), TTL-compatible 5V ±10% supply, and open-drain BUSY outputs requiring pull-up resistors. It enables full-speed 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7130SA25J datasheet, 7130SA25J pinout, 7130SA25J application, or 7130SA25J equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, and package-specific DC/AC electrical characteristics - all confirmed for the 7130SA25J variant in 48-pin ceramic flatpack (FP48) and plastic DIP (PDG48) packages.
Technical Context
The 7130SA25J implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via address-match detection and generates BUSYL/BUSYR output flags to stall writes during simultaneous access to identical addresses.
It supports R/W-controlled and CE-controlled write cycles, features INTL/INTR interrupt signaling for inter-port communication, and includes automatic power-down modes triggered by CE assertion - delivering 5 mW typical standby power in SA versions at 25 ns speed grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8 data lines per port) |
| Access Time (tAA) | 25 ns max - defines minimum time from valid address to stable read data |
| Read Cycle Time (tRC) | 25 ns max - sets shortest interval between successive read operations |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL logic rails and industrial 5V systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications |
| Standby Current (ISB1) | 30 mA max (TTL-level CE high) - determines power budget during idle periods |
| Dynamic Current (ICC) | 110 mA typ (both ports active) - critical for thermal design and regulator sizing |
Pinout & Package
7130SA25J is available in 48-pin ceramic flatpack (FP48) and plastic DIP (PDG48) packages. Both packages feature dual-port symmetry with dedicated left/right address, data, and control terminals, plus shared VCC and GND pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access (0–1023) |
| A0R–A9R | Right port address inputs | 10-bit address bus for right-side memory access (0–1023) |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; direction controlled by R/WR and OER |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; controls power-down entry |
| OEL, OER | Output enable (left/right) | Active-low enables data drivers; high-Z when deasserted |
| R/WL, R/WR | Read/write control (left/right) | High = read, low = write; determines I/O direction and internal latch timing |
| BUSYL, BUSYR | Arbitration status outputs | Open-drain flags indicating write contention; require external pull-up |
| INTL, INTR | Interrupt request outputs | Active-low flags for port-to-port event signaling (e.g., flag set/clear) |
| VCC, GND | Power supply | All VCC pins must be connected to 5V; all GND pins tied to system ground |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external logic, reducing BOM count and PCB area |
| Master/slave expandability | Enables seamless 16-bit+ data bus width using IDT7140 SLAVE devices - no glue logic required |
| Open-drain BUSY outputs | Allow wired-OR arbitration signaling across multiple MASTER devices in multi-processor systems |
| Port-to-port interrupt (INTL/INTR) | Supports deterministic inter-processor handshaking and synchronization in real-time control loops |
| Asynchronous dual-port operation | Permits independent, unsynchronized reads/writes from either port - essential for lock-free buffer sharing |
Applications
| Industrial PLC Data Exchange | Avionics Sensor Fusion Buffer |
|---|---|
Use Scenario: Two independent microcontrollers exchange sensor and actuator data through shared memory without software locks. IC Role / Device Role / Timing Role: 7130SA25J acts as MASTER dual-port SRAM providing atomic read/write access with hardware arbitration. Use Value: Eliminates CPU polling and software semaphores; 25 ns access ensures sub-microsecond inter-processor latency. | Use Scenario: Radar and inertial measurement units write raw data concurrently into a common buffer for real-time fusion processing. IC Role / Device Role / Timing Role: 7130SA25J serves as contention-managed shared memory with BUSY-driven write blocking. Use Value: Prevents data corruption during simultaneous writes; open-drain BUSY supports multi-sensor arbitration networks. |
| Military Command & Control Interface | Medical Imaging Frame Buffer |
Use Scenario: Secure communication processor and mission computer share encrypted command queues and status registers. IC Role / Device Role / Timing Role: 7130SA25J functions as MIL-PRF-38535 QML-compliant dual-port RAM with interrupt-driven notification. Use Value: INTL/INTR flags enable zero-latency event signaling; –55°C to +125°C rating supports harsh environments. | Use Scenario: FPGA-based image acquisition engine and ARM-based display controller access frame buffers without bus contention. IC Role / Device Role / Timing Role: 7130SA25J operates as high-reliability dual-port SRAM with independent clock domains on each port. Use Value: Asynchronous operation avoids clock domain crossing logic; 550 mW active power enables fanless thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-25JC | 5V, 1K × 8, 25 ns, but lacks on-chip arbitration and BUSY/INT signals | Requires external logic for contention resolution; not drop-in for MASTER-mode systems | Select only if arbitration handled in FPGA or MCU firmware |
| IDT7140SA25J | SLAVE-only dual-port SRAM; no arbitration logic; BUSY pins are inputs only | Cannot operate standalone; must pair with 7130SA25J in MASTER/SLAVE configuration | Use only as companion device to expand data width beyond 8 bits |
Compared with CY7C131-25JC and IDT7140SA25J, the 7130SA25J uniquely integrates arbitration, BUSY flag generation, and interrupt signaling - enabling true hardware-coordinated dual-processor memory sharing without external components or software overhead.
Availability
7130SA25J is available at Aetrix Electronics and suitable for industrial PLCs, avionics subsystems, military C4I interfaces, and medical imaging equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7130SA25J 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 7130SA/LA product line was designed specifically for real-time embedded systems requiring deterministic, contention-free dual-processor memory access - targeting aerospace, defense, and industrial automation applications.
FAQ
What is the maximum operating temperature range for the 7130SA25J?
The 7130SA25J is rated for industrial temperature operation from –40°C to +85°C. This specification is explicitly confirmed in the "Recommended Operating Temperature and Supply Voltage" table of the official datasheet, and applies to all SA-speed variants including the 25 ns grade. Military-grade versions (e.g., 7130MA25J) extend to –55°C to +125°C, but the SA suffix denotes industrial qualification.
Does the 7130SA25J support battery backup data retention?
No, the 7130SA25J does not support battery backup data retention. That capability is exclusive to LA-suffix variants (e.g., 7130LA25J), which specify 2.0 V minimum VCC for data retention and include dedicated low-power circuitry. The SA version consumes 5 mW typical standby current but requires continuous 5V operation to maintain memory state.
How does BUSY arbitration work on the 7130SA25J during simultaneous writes?
When both ports attempt to write to the same address, the 7130SA25J asserts BUSYL or BUSYR (open-drain) to block the later-arriving write. Arbitration uses address-match detection and tAPS (5 ns priority setup time); if timing is violated, either BUSY line may activate. The winning port completes its write; the blocked port's R/W signal is ignored internally - no data corruption occurs.
Can the 7130SA25J operate with only one port enabled?
Yes, the 7130SA25J supports single-port operation. When CEL = VIH and CER = VIL, only the right port is active; conversely, CEL = VIL and CER = VIH activates only the left port. Standby current drops to ISB2 (65 mA max for SA25J), and arbitration logic remains inactive since contention is impossible with one port disabled.
What package options are available for the 7130SA25J?
The 7130SA25J is offered in 48-pin ceramic flatpack (FP48) and 48-pin plastic DIP (PDG48). Pinouts are identical across both packages, with mechanical differences only in body size and thermal performance. FP48 measures ~0.75″ × 0.75″ × 0.11″; PDG48 is ~0.55″ × 0.61″ × 0.19″. Neither LCC, PLCC, nor TQFP variants are available for the SA25J speed grade.
7130SA25J 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)
7130SA25J FAQ
1.How can I place an order for 7130SA25J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA25J 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 7130SA25J reliable?
The price and inventory of 7130SA25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA25J is usually 5 days.
3.What payment methods are accepted for 7130SA25J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA25J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA25J?
7130SA25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA25J 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 7130SA25J?
For technical support, including 7130SA25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA25J requirements.
6.How does Aetrix verify that 7130SA25J is sourced from the original manufacturer or authorized distributors?
All 7130SA25J 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 7130SA25J meets industry standards.
7.What is the process for return or replacement of 7130SA25J?
All 7130SA25J units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA25J, 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 7130SA25J part is unused and in its original packaging.
Return procedure for 7130SA25J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA25J Tags
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