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Renesas 7130LA35PF8
- Part No.:
- 7130LA35PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA35PF8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,236
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Product details
Overview
7130LA35PF8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 35 ns maximum access time, TTL-compatible 5V ±10% operation, and battery-backed data retention down to 2V - used in real-time inter-processor communication systems requiring concurrent read/write access without external logic.
For engineers reviewing the 7130LA35PF8 datasheet, 7130LA35PF8 pinout, 7130LA35PF8 application, or 7130LA35PF8 equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag semantics, low-power standby current (1 µA typical), and package-specific pin mapping for FP48 ceramic flatpack implementation.
Technical Context
The 7130LA35PF8 implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via BUSY flag assertion when both ports access the same memory location, with tAPS = 5 ns priority setup time ensuring deterministic resolution.
It supports R/W-controlled and CE-controlled write cycles, open-drain BUSY outputs requiring external pull-up resistors, and interrupt generation via dedicated INTL/INTR pins. The LA variant enables 2V data retention during VCC brownout, with ICCDR ≤ 4000 µA (military grade) at 2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit wide), dual independent ports |
| Access Time (tAA) | 35 ns max - defines minimum address-to-data valid delay for timing-critical real-time systems |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level translation |
| Standby Current (ISB3) | 0.2 µA typical - enables ultra-low-power battery backup mode with full data retention |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor control and PLCs |
| Data Retention Voltage | 2.0 V min - maintains stored data during main power loss, critical for fault-tolerant systems |
| Package | 48-pin ceramic flatpack (FP48) - hermetically sealed, MIL-PRF-38535 QML-compliant |
Pinout & Package
7130LA35PF8 is housed in a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ footprint and 0.11″ height, featuring gull-wing leads and hermetic sealing per MIL-PRF-38535 QML Class V.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins minimize ground bounce across high-speed dual-port operation |
| VCC (Pins 23, 47) | Power supply | Dual VCC pins reduce IR drop and improve noise immunity for 5V CMOS core |
| CEL / CER | Chip enable (left/right) | Independent enables allow selective port power-down to achieve ISB2/ISB4 standby states |
| OEL / OER | Output enable (left/right) | Controls tri-state of I/O bus; high-Z state required before switching between read/write operations |
| R/WL / R/WR | Read/write direction (left/right) | Active-high for read, active-low for write - determines data flow direction per port |
| BUSYL / BUSYR | Arbitration status flag (open-drain) | Asserted low during address contention; requires external 4.7kΩ pull-up for proper logic level |
| INTL / INTR | Interrupt request (left/right) | Asynchronous flag set/reset via dedicated address sequences (e.g., A9–A0 = 3FFH) |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K address space independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional, left/right) | 8-bit parallel data path per port; no internal latching - requires external timing coordination |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in MASTER/SLAVE configurations with IDT7140 |
| Battery backup data retention | Preserves memory contents at 2V supply - enables seamless failover in power-loss scenarios |
| Open-drain BUSY outputs | Allows wired-OR connection of multiple dual-port devices for scalable shared-memory architectures |
| Port-to-port interrupt signaling | Hardware-accelerated inter-processor notification via dedicated INTL/INTR pins and address-mapped triggers |
| MIL-PRF-38535 QML compliance | Qualified for high-reliability military applications including avionics and radar subsystems |
Applications
| Real-Time Motor Control | Digital Signal Processor Co-Processing |
|---|---|
|
Use Scenario: Dual-core motion controller where FPGA handles trajectory planning and MCU executes servo loop updates, sharing position/velocity buffers. IC Role / Device Role / Timing Role: 7130LA35PF8 acts as contention-managed shared memory buffer with sub-35ns latency for synchronized parameter exchange. Use Value: Eliminates software semaphore overhead and guarantees atomic read-modify-write via hardware BUSY arbitration. |
Use Scenario: DSP offloads FFT computation while host ARM processor manages I/O and scheduling, exchanging coefficient tables and results. IC Role / Device Role / Timing Role: 7130LA35PF8 provides zero-wait-state dual-access memory for ping-pong buffering of 1024-point complex data sets. Use Value: Enables full utilization of both processors' bandwidth without pipeline stalls or external arbitration ICs. |
| Redundant Flight Computer Interface | Industrial PLC Shared Memory Module |
|
Use Scenario: Primary and backup flight computers maintain identical state vectors; cross-checking occurs via simultaneous read of shared health/status registers. IC Role / Device Role / Timing Role: 7130LA35PF8 serves as fault-tolerant memory hub with 2V data retention during primary power failure. Use Value: Ensures continuity of critical telemetry during brownout events, meeting DO-254 Level A requirements. |
Use Scenario: Modular PLC backplane where I/O modules and CPU share configuration and process variable tables in real time. IC Role / Device Role / Timing Role: 7130LA35PF8 operates as deterministic inter-module memory with interrupt-driven change notification. Use Value: Reduces scan cycle jitter by replacing polling-based communication with hardware-triggered INTL/INTR events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-35PC | 35 ns access, 5V, 1K × 8, but lacks on-chip arbitration and BUSY/INT logic; requires external logic for contention management | No native port-to-port interrupt or automatic arbitration - increases BOM count and PCB area | Select when cost sensitivity outweighs design simplicity; verify external arbitration timing meets system requirements |
| IDT7140LA35PF8 | Same 35 ns speed and LA low-power spec, but functions only as SLAVE - no arbitration logic, BUSY inputs only, no INT generation | Must be paired with 7130LA35PF8 as MASTER; cannot operate standalone in arbitration-critical roles | Use only in expanded 16-bit+ systems where 7130LA35PF8 handles arbitration and 7140LA35PF8 extends data width |
Compared with CY7C131-35PC, 7130LA35PF8 reduces system-level complexity through integrated arbitration and interrupt signaling; compared with IDT7140LA35PF8, it provides autonomous MASTER functionality essential for standalone dual-processor interfaces.
Availability
7130LA35PF8 is available at Aetrix Electronics and suitable for industrial motor drives, avionics subsystems, and redundant control systems requiring stable component supply, long-term obsolescence management, and MIL-spec traceability.
Supply support for 7130LA35PF8 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 high-performance timing, memory, and interface solutions, later acquired by Renesas Electronics in 2019.
The IDT7130 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems where dual-access memory eliminates software synchronization bottlenecks.
FAQ
What is the function of BUSYL and BUSYR on the 7130LA35PF8?
BUSYL and BUSYR are open-drain arbitration status outputs on the 7130LA35PF8. When asserted low, they indicate that the corresponding port's access is blocked due to address contention with the opposite port. Both require external pull-up resistors (typically 4.7 kΩ) to VIH. These signals enable hardware-level synchronization without software intervention, and their timing is characterized by tBAA ≤ 20 ns and tBDD ≤ 35 ns for the 35 ns speed grade.
Does the 7130LA35PF8 support true simultaneous read/write operations?
Yes - the 7130LA35PF8 supports fully asynchronous concurrent access: one port can read while the other writes to different addresses with no timing penalty. When both ports access the same address, on-chip arbitration asserts BUSYL or BUSYR to stall the later-arriving write, ensuring data coherency. This behavior is guaranteed across all operating conditions and requires no external logic.
How does the 2V data retention capability work on the 7130LA35PF8?
The 7130LA35PF8 maintains stored data at VCC = 2.0 V with ICCDR ≤ 4000 µA (military grade) or ≤ 1500 µA (commercial). This is achieved via optimized CMOS leakage control and does not require external circuitry. Data retention is active when CE pins are deasserted (VIH), placing the device in full standby (ISB3 mode); no clock or refresh is needed.
Can the 7130LA35PF8 be used without external pull-up resistors on BUSY and INT pins?
No - BUSYL, BUSYR, INTL, and INTR are open-drain outputs on the 7130LA35PF8 and require external pull-up resistors to function correctly. The datasheet specifies 4.7 kΩ to VCC for standard operation. Omitting pull-ups results in undefined logic levels, failed arbitration signaling, and unreliable interrupt generation - violating functional requirements in all supported applications.
What is the difference between 7130LA35PF8 and 7140LA35PF8 in a MASTER/SLAVE configuration?
The 7130LA35PF8 is the MASTER device: it contains on-chip arbitration logic, generates BUSY outputs, and initiates interrupts. The 7140LA35PF8 is the SLAVE: it accepts BUSY as input (not output), has no arbitration logic, and cannot generate interrupts. In a 16-bit system, one 7130LA35PF8 controls two 7140LA35PF8s - the 7130LA35PF8 must always be present for arbitration to function.
7130LA35PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7130LA35PF8 FAQ
1.How can I place an order for 7130LA35PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA35PF8 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 7130LA35PF8 reliable?
The price and inventory of 7130LA35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA35PF8 is usually 5 days.
3.What payment methods are accepted for 7130LA35PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA35PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA35PF8?
7130LA35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA35PF8 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 7130LA35PF8?
For technical support, including 7130LA35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA35PF8 requirements.
6.How does Aetrix verify that 7130LA35PF8 is sourced from the original manufacturer or authorized distributors?
All 7130LA35PF8 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 7130LA35PF8 meets industry standards.
7.What is the process for return or replacement of 7130LA35PF8?
All 7130LA35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA35PF8, 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 7130LA35PF8 part is unused and in its original packaging.
Return procedure for 7130LA35PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA35PF8 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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