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Renesas 7130LA35L48B
- Part No.:
- 7130LA35L48B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-LCC
- Datasheet:
-
7130LA35L48B.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 48LCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,942
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Product details
Overview
7130LA35L48B from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 35 ns maximum read cycle time, 1 µA full-standby current (CMOS-level inputs), and battery-backed data retention down to 2.0 V. It enables concurrent asynchronous access from left/right ports in real-time control systems requiring deterministic memory contention resolution.
For engineers reviewing the 7130LA35L48B datasheet, 7130LA35L48B pinout, 7130LA35L48B application, or 7130LA35L48B equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, and industrial-grade (-40°C to +85°C) thermal performance for embedded dual-processor interconnect designs.
Technical Context
The 7130LA35L48B implements fully asynchronous dual-port architecture with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves simultaneous access to identical addresses via BUSY output assertion and priority set-up timing (tAPS = 5 ns).
As a MASTER device, it features open-drain BUSYL/BUSYR outputs requiring external pull-ups, INTL/INTR flags for inter-port signaling, and supports battery backup mode with 2.0 V data retention-functionality absent in SLAVE IDT7140 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact dual-processor shared memory buffers |
| Access Time | 35 ns max read cycle time (tRC), guaranteeing deterministic latency for real-time interrupt response |
| Standby Current | 1 µA full standby (ISB3, CMOS inputs), supporting ultra-low-power sleep modes in battery-backed systems |
| Data Retention | 2.0 V minimum VCC for data retention (VDR), allowing operation from coin-cell backup without regulator |
| Operating Temp | -40°C to +85°C industrial range, validated for deployment in motor drives and industrial PLCs |
| Supply Voltage | 4.5 V to 5.5 V (±10% of 5 V), compatible with standard TTL/CMOS logic rails |
| Package | 48-pin ceramic flatpack (FP48), hermetically sealed for high-reliability aerospace and defense applications |
Pinout & Package
7130LA35L48B is housed in a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ body size and 0.11″ height, designed for high-temperature stability and low outgassing in vacuum environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure low-impedance return paths for both ports' I/O and core logic |
| VCC (Pin 25) | Power supply | Single 5 V supply powers entire dual-port array and arbitration logic; all VCC pins must be decoupled |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; deassertion places port in standby (ISB1/ISB2/ISB4 modes) |
| OEL / OER | Output enable (left/right) | Active-low controls I/O bus drivers; high-Z state prevents bus contention during arbitration |
| R/WL / R/WR | Read/write direction (left/right) | High = read, low = write; determines data flow direction independently per port |
| BUSYL / BUSYR | Arbitration status (open-drain) | Asserted low when opposite port accesses same address; requires external pull-up resistor per datasheet Note 1 |
| INTL / INTR | Interrupt flag (open-drain) | Set/reset by writing specific addresses (3FFH/3FEH); signals inter-port events to host processors |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K-word addressing per port with no external decoding |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | Separate 8-bit data buses allow simultaneous read/write operations across ports without multiplexing |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves same-address contention without external glue logic; guarantees deterministic BUSY assertion within 20 ns (tBAA) |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt sharing across multiple dual-port devices on common bus lines |
| Battery backup data retention | Maintains memory contents at 2.0 V VCC, eliminating need for external SRAM backup controllers |
| Independent port power-down | Per-port CE control allows one port to remain active while the other enters <1 µA ISB4 standby |
| TTL-compatible interface | Direct connection to 5 V microcontrollers and FPGAs without level-shifting circuitry |
Applications
| Motor Control System | Dual-Processor Communication |
|---|---|
Use Scenario: Real-time servo loop execution where FPGA handles PWM generation and MCU manages trajectory planning, sharing position/velocity data via shared memory. IC Role / Device Role / Timing Role: 7130LA35L48B acts as MASTER dual-port SRAM providing deterministic arbitration between FPGA (left port) and ARM Cortex-M7 (right port) accessing synchronized motion buffers. Use Value: 35 ns tRC and 5 ns tAPS eliminate software polling delays; BUSY-driven hardware blocking ensures atomic updates to critical motion parameters. | Use Scenario: Redundant flight controller architecture with primary and backup processors exchanging health status, sensor fusion results, and actuator commands. IC Role / Device Role / Timing Role: 7130LA35L48B serves as fault-tolerant shared memory hub, with each processor assigned a dedicated port and using INTL/INTR for heartbeat signaling. Use Value: Open-drain INT outputs enable fail-safe interrupt aggregation; 2.0 V data retention preserves last-known-good state during brownout events. |
| Industrial PLC I/O Module | Test Equipment Data Buffer |
Use Scenario: High-density digital I/O module consolidating 128-channel scan data from field sensors into a centralized buffer before transfer to main CPU. IC Role / Device Role / Timing Role: 7130LA35L48B functions as acquisition-side buffer (left port) and host-interface side (right port), decoupling sensor sampling rate from bus transfer latency. Use Value: Asynchronous dual-port operation eliminates FIFO overflow risk; industrial temperature rating ensures reliability in cabinet-mounted enclosures. | Use Scenario: Automated test system capturing high-speed analog waveform samples at 10 MS/s, storing bursts in local memory before analysis. IC Role / Device Role / Timing Role: 7130LA35L48B operates as acquisition buffer (right port) and DMA host interface (left port), enabling continuous streaming without CPU intervention. Use Value: 1 µA ISB3 standby current extends battery life in portable testers; ceramic FP48 package withstands thermal cycling in production floor 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-35AXC | 32K × 16 organization, 35 ns access, 3.3 V supply only; no battery retention or BUSY arbitration logic | Requires level shifters for 5 V systems; lacks hardware contention resolution-needs external logic or software coordination | Select when higher density and lower voltage operation outweigh need for autonomous arbitration and backup retention |
| IDT7140LA35L48B | SLAVE-only variant; BUSY pins are inputs (not outputs); no on-chip arbitration logic; identical timing and retention specs | Must be paired with IDT7130 as MASTER; cannot operate standalone; used only in 16-bit+ width expansion configurations | Select only when expanding data bus width beyond 8 bits using MASTER/SLAVE topology |
Compared with CY7C024AV-35AXC and IDT7140LA35L48B, the 7130LA35L48B uniquely integrates arbitration, battery retention, and MASTER functionality in a single 8-bit device-enabling simpler, more robust dual-processor interconnects without external logic or voltage translation.
Availability
7130LA35L48B is available at Aetrix Electronics and suitable for motor control systems, industrial PLC modules, redundant flight controllers, and automated test equipment requiring stable component supply across extended product lifecycles.
Supply support for 7130LA35L48B 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 signal processing solutions, now part of Renesas Electronics.
The IDT7130/7140 family was designed specifically for deterministic dual-processor communication and real-time control applications requiring hardware-enforced memory coherency without software overhead.
FAQ
What is the guaranteed maximum read cycle time for the 7130LA35L48B?
The 7130LA35L48B has a guaranteed maximum read cycle time (tRC) of 35 ns across its full industrial temperature range (-40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This parameter is production-tested and ensures deterministic timing for hard real-time systems where worst-case latency must be bounded.
Does the 7130LA35L48B support true battery backup operation?
Yes, the 7130LA35L48B supports true battery backup: it retains stored data at VCC as low as 2.0 V (VDR), with typical data retention current (ICCDR) of 100 µA at +25°C. This capability is exclusive to LA versions and enables direct connection to lithium coin cells without auxiliary regulators or backup controllers.
How does arbitration work between ports on the 7130LA35L48B?
The 7130LA35L48B uses on-chip arbitration logic that asserts BUSYL or BUSYR low when both ports attempt access to the same memory location. The port meeting the 5 ns arbitration priority setup time (tAPS) wins; the losing port's write is inhibited. BUSY outputs are open-drain and require external pull-up resistors per datasheet Note 1.
Can the 7130LA35L48B operate as a standalone dual-port RAM?
Yes, the 7130LA35L48B is designed to operate as a standalone 8-bit dual-port SRAM. Unlike the SLAVE-only IDT7140, it contains full arbitration logic, BUSY outputs, and INT flags-requiring no companion device. It may also serve as MASTER in MASTER/SLAVE configurations to expand data width.
What package type is used for the 7130LA35L48B?
The 7130LA35L48B uses a 48-pin ceramic flatpack (FP48) package with dimensions approximately 0.75″ × 0.75″ × 0.11″. This hermetic package provides superior thermal stability, low outgassing, and reliability for aerospace, defense, and high-reliability industrial applications.
7130LA35L48B 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:
- 35ns
- Access Time:
- 35 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)
7130LA35L48B FAQ
1.How can I place an order for 7130LA35L48B through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA35L48B 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 7130LA35L48B reliable?
The price and inventory of 7130LA35L48B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA35L48B is usually 5 days.
3.What payment methods are accepted for 7130LA35L48B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA35L48B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA35L48B?
7130LA35L48B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA35L48B 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 7130LA35L48B?
For technical support, including 7130LA35L48B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA35L48B requirements.
6.How does Aetrix verify that 7130LA35L48B is sourced from the original manufacturer or authorized distributors?
All 7130LA35L48B 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 7130LA35L48B meets industry standards.
7.What is the process for return or replacement of 7130LA35L48B?
All 7130LA35L48B units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA35L48B, 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 7130LA35L48B part is unused and in its original packaging.
Return procedure for 7130LA35L48B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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