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Renesas 7130LA20PF8
- Part No.:
- 7130LA20PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA20PF8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,128
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Product details
Overview
7130LA20PF8 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, 20 ns maximum read cycle time, 2V data retention capability, and TTL-compatible 5V ±10% operation - used in real-time inter-processor communication systems requiring concurrent access to shared memory.
For engineers reviewing the 7130LA20PF8 datasheet, 7130LA20PF8 pinout, 7130LA20PF8 application, or 7130LA20PF8 equivalent, key selection criteria include bus contention resolution via BUSY flag timing (tBAA ≤ 20 ns), low standby current (ISB3 = 0.2 mA typ.), dual-port asynchronous operation, and compatibility with IDT7140 SLAVE devices for 16-bit expansion.
Technical Context
The 7130LA20PF8 implements fully independent left/right ports with separate address, control, and I/O buses, enabling simultaneous read/write operations without external arbitration logic. Its on-chip arbitration resolves port conflicts using BUSY output flags (BUSYL/BUSYR) and supports interrupt signaling via INTL/INTR pins.
It features battery backup data retention at VCC = 2.0 V (LA variant only), CMOS fabrication for low power (550 mW active, 1 µA full standby), and open-drain BUSY outputs requiring external pull-up resistors per datasheet Note 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), providing compact shared memory for embedded co-processor architectures |
| Access Time | 20 ns max (tRC, tAA, tACE), enabling integration into 50 MHz synchronous bus interfaces |
| Data Retention | 2.0 V minimum VCC (LA version only), supporting battery-backed operation during main power loss |
| Standby Current | 0.2 mA typical (ISB3, CMOS-level inputs), critical for low-power hold modes in portable systems |
| Supply Voltage | 4.5–5.5 V (TTL-compatible), eliminating need for level-shifting in legacy 5V logic designs |
| Operating Temp | –40°C to +85°C (industrial grade), validated for deployment in industrial control and telecom infrastructure |
| Package | 48-pin plastic DIP (PDG48), compatible with through-hole prototyping and legacy PCB assembly |
Pinout & Package
48-pin plastic DIP (PDG48) package with 0.600-inch width, 0.19-inch height, and standard DIP footprint for manual soldering and socket-based evaluation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable return path for dual-port I/O and reduce ground bounce during concurrent access |
| VCC (Pins 23, 48) | Power supply | Dual VCC pins decouple supply for left/right port circuitry and minimize voltage droop during simultaneous reads/writes |
| CEL / CER | Chip enable (left/right) | Independent chip enables allow selective port activation - essential for power gating unused ports |
| OEL / OER | Output enable (left/right) | Asynchronous output control per port; enables high-impedance tri-state during bus sharing |
| R/WL / R/WR | Read/write direction (left/right) | Active-high write control eliminates need for external inverters in standard microcontroller interfacing |
| BUSYL / BUSYR | Arbitration status (open-drain) | Open-drain outputs require external pull-up; assert LOW when opposite port accesses same address - prevents data corruption |
| INTL / INTR | Interrupt request (left/right) | Asynchronous flags signal completion of cross-port writes (e.g., left port writing triggers INTR on right port) |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K-word addressing per port; no internal multiplexing required |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data paths with internal bus-hold logic; eliminate external termination in point-to-point links |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves port contention automatically via BUSY flag assertion - removes need for external priority encoder or glue logic |
| Port-to-port interrupt signaling | INTL/INTR pins enable event-driven synchronization between processors without polling overhead |
| 2V data retention (LA) | Preserves memory contents during brown-out or battery switchover - critical for fail-safe state storage |
| Master/Slave expandability | 7130LA20PF8 (MASTER) pairs with IDT7140 SLAVE to build 16-bit+ data width systems without timing skew or external logic |
| Full asynchronous operation | Each port operates independently - no clock required; simplifies interface to microcontrollers, FPGAs, and legacy ASICs |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two DSPs exchange filter coefficients and processed audio frames via shared memory in a voice-over-IP gateway. IC Role / Device Role / Timing Role: 7130LA20PF8 serves as MASTER dual-port SRAM, arbitrating concurrent access while maintaining deterministic latency under 20 ns. Use Value: Eliminates software semaphore overhead and guarantees atomic read-modify-write cycles for coefficient updates. | Use Scenario: An FPGA-accelerated FFT engine streams time-domain samples to a fixed-point DSP for spectral analysis. IC Role / Device Role / Timing Role: 7130LA20PF8 provides zero-wait-state buffering between FPGA (left port) and DSP (right port) with independent clock domains. Use Value: Enables continuous data flow without pipeline stalls - sustaining 50 Msps sample throughput. |
| Industrial PLC Shared Memory | Military Avionics Health Monitoring |
Use Scenario: A programmable logic controller uses dual CPUs for safety-critical motion control and non-critical HMI rendering. IC Role / Device Role / Timing Role: 7130LA20PF8 acts as fault-isolated memory hub, with BUSY arbitration preventing race conditions during I/O scan updates. Use Value: Meets IEC 61508 SIL-2 requirements by ensuring deterministic memory access under worst-case timing. | Use Scenario: Radar subsystem monitors sensor health and stores diagnostic logs across power cycles in airborne radar units. IC Role / Device Role / Timing Role: 7130LA20PF8 operates in battery-backed mode (2V retention) to preserve last-known-good state during engine start transients. Use Value: Guarantees 100% log integrity without supercapacitor or EEPROM wear-out concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-20VC | 20 ns access, 5V, 1K × 8, but lacks on-chip arbitration and BUSY logic - requires external priority encoder | Suitable for simpler master-only configurations without port contention risk | Select when system design already includes discrete arbitration or uses single-processor access patterns |
| IDT7140LA20PF8 | Same speed/package, but SLAVE-only: BUSY pins are inputs (not outputs); no internal arbitration logic | Used only in paired MASTER/SLAVE configurations - cannot operate stand-alone as memory controller | Choose only when expanding to 16-bit width with 7130LA20PF8 as MASTER; not interchangeable as drop-in replacement |
Compared with CY7C131-20VC and IDT7140LA20PF8, the 7130LA20PF8 uniquely integrates arbitration logic and MASTER functionality - reducing BOM count by two ICs and eliminating timing-critical external logic in contention-prone multi-processor systems.
Availability
7130LA20PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and industrial PLC shared memory applications requiring stable component supply across extended product lifecycles.
Supply support for 7130LA20PF8 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 IDT7130/7140 family was designed specifically for deterministic, contention-free dual-processor memory sharing - targeting avionics, test equipment, and programmable logic controllers where bus arbitration reliability is mission-critical.
FAQ
What is the guaranteed maximum access time for the 7130LA20PF8?
The 7130LA20PF8 has a guaranteed maximum read cycle time (tRC) of 20 ns across the industrial temperature range (–40°C to +85°C) and supply voltage of 4.5–5.5 V. This includes address access time (tAA), chip enable access time (tACE), and output enable access time (tAOE), all specified at ≤20 ns, ensuring compatibility with 50 MHz bus systems.
Does the 7130LA20PF8 support battery backup operation?
Yes, the 7130LA20PF8 supports battery backup data retention at VCC = 2.0 V (minimum), with typical data retention current of 100 µA and maximum of 4000 µA over the military/industrial temperature range. This feature is exclusive to LA variants and enables non-volatile memory hold during main power interruption.
How does the BUSY arbitration logic work on the 7130LA20PF8?
The 7130LA20PF8 asserts BUSYL or BUSYR (open-drain outputs) LOW when the opposite port initiates an access to the same memory address. This blocks writes on the contending port until BUSY deasserts. The arbitration priority setup time (tAPS) is 5 ns, and BUSY disable-to-valid-data delay (tBDD) is ≤25 ns - ensuring deterministic resolution without external logic.
Can the 7130LA20PF8 be used as a standalone dual-port RAM without a SLAVE device?
Yes, the 7130LA20PF8 functions as a complete stand-alone 8-bit dual-port SRAM. Its integrated arbitration, BUSY outputs, and interrupt flags eliminate dependency on IDT7140 SLAVE devices. The SLAVE pairing is optional and only required when expanding to 16-bit or wider data paths - not needed for basic dual-processor memory sharing.
What package type is used for the 7130LA20PF8?
The 7130LA20PF8 uses a 48-pin plastic dual in-line package (PDG48), measuring approximately 0.55 inch × 0.61 inch × 0.19 inch. It is a through-hole package compatible with standard DIP sockets and wave-soldering processes - commonly selected for industrial and military applications requiring mechanical robustness and long-term serviceability.
7130LA20PF8 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:
- 20ns
- Access Time:
- 20 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)
7130LA20PF8 FAQ
1.How can I place an order for 7130LA20PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA20PF8 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 7130LA20PF8 reliable?
The price and inventory of 7130LA20PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA20PF8 is usually 5 days.
3.What payment methods are accepted for 7130LA20PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA20PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA20PF8?
7130LA20PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA20PF8 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 7130LA20PF8?
For technical support, including 7130LA20PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA20PF8 requirements.
6.How does Aetrix verify that 7130LA20PF8 is sourced from the original manufacturer or authorized distributors?
All 7130LA20PF8 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 7130LA20PF8 meets industry standards.
7.What is the process for return or replacement of 7130LA20PF8?
All 7130LA20PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA20PF8, 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 7130LA20PF8 part is unused and in its original packaging.
Return procedure for 7130LA20PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA20PF8 Tags
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