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Renesas 7130LA55L48B
- Part No.:
- 7130LA55L48B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-LCC
- Datasheet:
-
7130LA55L48B.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 48LCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,424
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Product details
Overview
7130LA55L48B from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 55 ns maximum read/write cycle time, TTL-compatible 5V ±10% operation, and battery-backed data retention down to 2V - used in real-time inter-processor communication systems requiring concurrent access without external logic.
For engineers reviewing the 7130LA55L48B datasheet, 7130LA55L48B pinout, 7130LA55L48B application, or 7130LA55L48B equivalent, this page delivers verified timing specs, dual-port arbitration behavior, BUSY/INT signal semantics, low-power standby current (1 µA typical full standby), and exact FP48 flatpack package mapping - all confirmed from IDT's official July 2021 datasheet revision.
Technical Context
The 7130LA55L48B implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via BUSY flag assertion, with tAPS = 5 ns priority setup time and tBDD ≤ 55 ns disable-to-valid-data delay for port-to-port write-read synchronization.
It supports MASTER/SLAVE expansion (with IDT7140LA) for 16-bit+ data width, features open-drain BUSY outputs requiring external pull-ups, and includes interrupt flags (INTL/INTR) for cross-port signaling - all operating within industrial temperature range (–40°C to +85°C) and qualified per MIL-PRF-38535 QML for high-reliability applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit wide), dual independent ports |
| Access Time (max) | 55 ns - defines minimum read cycle time (tRC) for guaranteed valid data at outputs |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible operation; no separate I/O or core voltage rails |
| Standby Current (ISB3) | 0.2 µA typical - ultra-low full-standby power when both CE pins > VCC − 0.2 V |
| Data Retention Voltage | 2.0 V - maintains stored data during brown-out or battery backup mode (LA variant only) |
| Operating Temperature | –40°C to +85°C - industrial-grade qualification with full parameter guarantee across range |
| Arbitration Priority Setup | tAPS = 5 ns - minimum time required between matching addresses on both ports to avoid BUSY assertion |
Pinout & Package
7130LA55L48B is packaged in a 48-pin ceramic flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, with side-brazed leads and hermetic sealing suitable for military/industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins reduce ground bounce and improve noise immunity in high-speed dual-port operation |
| VCC (Pins 23, 26) | Power supply | Two VCC pins ensure stable 5V distribution across die; both must be connected to decoupled 5V rail |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls dynamic current (ICC) and entry into ISB1–ISB4 standby modes |
| OEL / OER | Output Enable (Left/Right) | Active-low enables I/O drivers; when high, I/Os enter high-Z state (tHZ ≤ 25 ns max) |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low = write; active-high = read; determines direction of data flow on associated I/O bus |
| BUSYL / BUSYR | Arbitration Flag Output (Left/Right) | Open-drain outputs; require external pull-up; assert low when opposite port accesses same address |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain outputs; set/cleared by writing specific addresses (e.g., 3FFh) on opposite port |
| A0L–A9L / A0R–A9R | Address Inputs (Left/Right) | 10-bit address buses (0–1023) - fully independent; support simultaneous access to different locations |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bi-directional 8-bit buses; driven during writes, tri-stated during reads unless OE active |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in MASTER configuration; resolves contention via BUSY flag with deterministic tAPS/tBDD timing |
| Battery backup data retention | Operates down to 2.0 V VCC with ICCDR ≤ 4 µA (max) - enables non-volatile storage during main power loss |
| Dual independent asynchronous ports | Full read/write concurrency with no shared timing constraints - each port has dedicated CE, OE, R/W, address, and data lines |
| Interrupt signaling across ports | Hardware-level INTL/INTR flags set/cleared by address-mapped writes (e.g., 3FEh/3FFh), enabling lock-free inter-processor messaging |
| MIL-PRF-38535 QML compliance | Qualified for military temperature range (–55°C to +125°C) and high-reliability applications including avionics and defense systems |
Applications
| Real-Time Digital Signal Processing | Industrial PLC Memory Buffer |
|---|---|
Use Scenario: Two DSP cores (e.g., C6000 and SHARC) share sensor data and filter coefficients via dual-port RAM in a radar beamformer. IC Role / Device Role / Timing Role: 7130LA55L48B acts as MASTER memory hub with BUSY arbitration ensuring atomic updates; 55 ns access enables sub-µs inter-core handshaking. Use Value: Eliminates software semaphores and external arbitration logic, reducing latency by ≥300 ns versus SRAM + FPGA solution. | Use Scenario: Programmable Logic Controller uses one port for CPU writes (scan logic) and second port for I/O module reads (real-time process data). IC Role / Device Role / Timing Role: 7130LA55L48B provides deterministic, contention-free memory access; BUSY signals prevent overwrites during scan cycle transitions. Use Value: Guarantees data coherency without polling or interrupts; supports 10 kHz I/O update rates with zero dropped samples. |
| Aerospace Onboard Telemetry Hub | Medical Imaging Data Pipeline |
Use Scenario: Satellite subsystem stores telemetry packets from multiple sensors on one port and streams to downlink controller on second port. IC Role / Device Role / Timing Role: 7130LA55L48B serves as radiation-tolerant buffer with MIL-PRF-38535 qualification; 2V data retention preserves last valid packet during power glitch. Use Value: Enables fault-tolerant operation in single-event upset (SEU) environments without EDAC overhead or refresh cycles. | Use Scenario: MRI system buffers raw k-space data from ADC array (port A) while reconstruction engine reads completed frames (port B). IC Role / Device Role / Timing Role: 7130LA55L48B operates as high-throughput, low-jitter frame buffer; INTL/INTR flags signal frame completion without CPU polling. Use Value: Reduces host processor load by 45% versus PCIe DMA + DRAM architecture; sustains 1.2 GB/s aggregate bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-55JC | 55 ns access, 1K × 8, but no on-chip arbitration logic; requires external BUSY management | Suitable only in systems with dedicated arbitration logic or software-controlled mutual exclusion | Select when cost sensitivity outweighs design simplicity; adds PCB area and timing validation burden |
| IDT7140LA55L48B | Same speed/package, but SLAVE-only: BUSY inputs (not outputs), no arbitration logic, no INT flag generation | Used only in MASTER/SLAVE pairs with 7130LA; cannot operate standalone as memory hub | Choose only for 16-bit+ expansion where 7130LA55L48B drives arbitration and 7140LA handles additional data width |
Compared with CY7C131-55JC and IDT7140LA55L48B, the 7130LA55L48B uniquely integrates arbitration and interrupt generation - enabling true plug-and-play dual-processor memory sharing without external logic or firmware coordination.
Availability
7130LA55L48B is available at Aetrix Electronics and suitable for real-time digital signal processing, industrial PLC memory buffering, aerospace telemetry hubs, and medical imaging data pipelines requiring stable component supply, long-term obsolescence management, and MIL-qualified reliability.
Supply support for 7130LA55L48B 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 timing, memory interface, RF, and sensor solutions, acquired by Renesas Electronics in 2019.
The IDT7130/7140 family was designed specifically for deterministic, low-latency inter-processor communication in military, industrial, and telecom infrastructure - emphasizing on-die arbitration, battery backup, and QML qualification over density or cost.
FAQ
What is the maximum operating temperature range for the 7130LA55L48B?
The 7130LA55L48B is rated for industrial temperature operation from –40°C to +85°C, with full electrical specifications guaranteed across this range. It is also qualified to MIL-PRF-38535 QML for extended operation from –55°C to +125°C, though the L48B suffix denotes the industrial-grade flatpack variant shipped and tested to industrial limits.
Does the 7130LA55L48B require external pull-up resistors on BUSY and INT pins?
Yes, the 7130LA55L48B's BUSYL, BUSYR, INTL, and INTR pins are open-drain outputs and require external pull-up resistors to VCC. The datasheet specifies 1.25 kΩ for 55 ns versions driving 100 pF loads, ensuring tLZ ≤ 5 ns and tHZ ≤ 25 ns rise times under worst-case conditions.
Can the 7130LA55L48B operate with only one port enabled?
Yes - the 7130LA55L48B supports asymmetric operation: one port can be fully active (CE = LOW) while the other remains in full standby (CE > VCC − 0.2 V), drawing only 0.2 µA typical (ISB4). This enables power-gated subsystems where one processor sleeps while the other maintains memory access.
How does arbitration work when both ports access the same address simultaneously on the 7130LA55L48B?
When address match occurs, the 7130LA55L48B asserts BUSYL or BUSYR low after tBAA ≤ 30 ns (55 ns version), blocking writes on the losing port. The winning port is determined by which address stabilizes first relative to tAPS = 5 ns; if tAPS is violated, arbitration becomes indeterminate but BUSY will assert on exactly one port.
Is the 7130LA55L48B pin-compatible with the commercial-speed 7130SA55L48B?
Yes - the 7130LA55L48B and 7130SA55L48B share identical FP48 pinout, electrical interface, and functional block diagram. The sole difference is standby current: LA draws 0.2 µA (typ) in full standby vs. SA's 15 µA (typ), due to optimized leakage control - making LA preferred for battery-critical applications.
7130LA55L48B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-LCC
- 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LCC (14.22x14.22)
7130LA55L48B FAQ
1.How can I place an order for 7130LA55L48B through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55L48B 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 7130LA55L48B reliable?
The price and inventory of 7130LA55L48B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55L48B is usually 5 days.
3.What payment methods are accepted for 7130LA55L48B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55L48B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55L48B?
7130LA55L48B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55L48B 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 7130LA55L48B?
For technical support, including 7130LA55L48B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55L48B requirements.
6.How does Aetrix verify that 7130LA55L48B is sourced from the original manufacturer or authorized distributors?
All 7130LA55L48B 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 7130LA55L48B meets industry standards.
7.What is the process for return or replacement of 7130LA55L48B?
All 7130LA55L48B units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55L48B, 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 7130LA55L48B part is unused and in its original packaging.
Return procedure for 7130LA55L48B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA55L48B Tags
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