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Renesas 7130LA55PF
- Part No.:
- 7130LA55PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA55PF.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,181
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Product details
Overview
7130LA55PF from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns max read/write cycle time, 1 mA typical standby current (LA version), and battery-backed data retention down to 2 V. It enables concurrent asynchronous access from left and right ports in real-time inter-processor communication systems.
For engineers reviewing the 7130LA55PF datasheet, 7130LA55PF pinout, 7130LA55PF application, or 7130LA55PF equivalent, key selection criteria include dual-port arbitration timing (tBAA ≤ 55 ns), BUSY output open-drain behavior requiring external pull-up, 48-pin flatpack mechanical compatibility, and industrial temperature support (–40°C to +85°C).
Technical Context
The 7130LA55PF implements fully asynchronous dual-port operation with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion when address matches occur between ports, with tAPS = 5 ns priority setup time ensuring deterministic port ownership.
As a MASTER device, it features open-drain BUSYL/BUSYR outputs (requiring external pull-ups) and INTL/INTR flags for port-to-port interrupt signaling. The LA variant supports 2 V data retention with ISB3 ≤ 10 µA full standby current under CMOS-level inputs, distinguishing it from SA versions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit data width per port) |
| Access Time (max) | 55 ns - defines minimum read/write cycle time for timing-critical real-time systems |
| Supply Voltage | 4.5 V to 5.5 V - TTL-compatible single 5 V ±10% rail, no auxiliary supplies required |
| Standby Current (ISB3) | ≤10 µA at VCC = 5 V - enables ultra-low-power battery backup mode with 2 V data retention |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Package | 48-pin ceramic flatpack (FP48) - hermetic, leaded, RoHS-compliant, 0.75″ × 0.75″ footprint |
| BUSY Output Type | Open-drain - requires external pull-up resistor for proper flag assertion in arbitration scenarios |
Pinout & Package
7130LA55PF is housed in a 48-pin ceramic flatpack (FP48) with 0.050″ lead pitch, hermetically sealed, and rated for industrial temperature operation. Pin numbering follows standard counter-clockwise orientation with index mark at Pin 1.
| 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 across both ports |
| VCC (Pins 23, 26) | Power supply | Dual VCC pins ensure stable core voltage delivery under high-frequency switching of both ports |
| CEL / CER | Chip enable (left/right) | Independent CE controls per port enable selective power-down of unused interface without affecting other port |
| OEL / OER | Output enable (left/right) | Separate OE allows tri-state control of I/O drivers per port during shared bus arbitration |
| R/WL / R/WR | Read/write control (left/right) | Active-high R/W selects direction; enables true asynchronous read/write on either port at any time |
| BUSYL / BUSYR | Arbitration flag output (left/right) | Open-drain outputs signal port contention; require external 4.7 kΩ pull-up to VCC for valid logic HIGH |
| INTL / INTR | Interrupt flag (left/right) | Push-pull outputs signal inter-port events (e.g., write to address 0x3FE sets INTL); no external components needed |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K memory map per port; no internal multiplexing required |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data paths operate independently; no bus turnaround delay between read/write transitions |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access conflicts deterministically using tAPS = 5 ns setup time-eliminates need for external glue logic |
| Battery backup data retention | Maintains stored data at 2 V VCC with ISB3 ≤ 10 µA-enables fail-safe operation during main power loss |
| Independent port control | Full asynchronous operation: left and right ports may perform reads/writes concurrently with no timing interlock |
| Open-drain BUSY outputs | Allows wired-OR connection of multiple 7130LA55PF devices for system-level arbitration tree implementation |
| Industrial temperature range | Guaranteed operation from –40°C to +85°C with no parameter derating-suitable for embedded control in harsh environments |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands in a motor drive system with strict latency constraints. IC Role / Device Role / Timing Role: 7130LA55PF acts as MASTER dual-port SRAM, providing zero-wait-state shared memory with hardware arbitration to prevent data corruption during concurrent access. Use Value: Eliminates software polling or semaphores; tBDD ≤ 55 ns ensures valid read data within one cycle after BUSY deassertion, enabling sub-100 ns inter-core handshaking. | Use Scenario: An FPGA-based FFT accelerator shares input samples and results with an ARM Cortex-M7 host processor. IC Role / Device Role / Timing Role: 7130LA55PF serves as low-latency buffer memory, accepting streaming ADC data on one port while the host reads processed results from the other port. Use Value: 55 ns access time sustains >18 MHz sustained throughput per port; LA variant's 2 V retention preserves intermediate buffers during host sleep modes. |
| Redundant Control System Memory | Avionics Data Logger Interface |
Use Scenario: Dual-channel flight controller maintains synchronized state variables across primary and backup channels. IC Role / Device Role / Timing Role: 7130LA55PF provides mirrored memory space where each channel writes status to its port and reads the peer's status via the opposite port. Use Value: On-chip BUSY arbitration prevents write collisions during failover; industrial temp rating ensures reliability in uncontrolled cabin environments. | Use Scenario: Black box recorder captures telemetry from multiple sensors and stores timestamps, values, and fault codes. IC Role / Device Role / Timing Role: 7130LA55PF interfaces between sensor acquisition ASIC and flash controller, buffering burst data before compression and storage. Use Value: 48-pin FP48 package meets avionics board space constraints; hermetic seal resists humidity and thermal cycling; 2 V retention safeguards logs during power interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25 | 512 × 18 organization, 25 ns access, 3.3 V supply only, no battery retention | Wider data bus but half depth; incompatible voltage and retention capability | Select only if 18-bit data path and 3.3 V system architecture are mandatory |
| AS7C31025B | 1M × 8 async SRAM, single-port, 10 ns access, no arbitration or dual-port features | Lacks dual-port, BUSY, or interrupt logic-requires external arbitration circuitry | Choose only for cost-sensitive, non-concurrent-access applications where arbitration is handled in software or FPGA |
Compared with CY7C1354V25 and AS7C31025B, the 7130LA55PF uniquely delivers 1K × 8 dual-port functionality with integrated arbitration, 2 V data retention, and industrial temperature support in a legacy-compatible 48-pin flatpack-making it irreplaceable for real-time deterministic inter-processor memory sharing.
Availability
7130LA55PF is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and redundant control system memory requiring stable component supply across extended product lifecycles.
Supply support for 7130LA55PF 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, and RF solutions, now part of Renesas Electronics since 2019.
The 7130LA55PF belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between independent processors or ASICs in industrial and avionics systems.
FAQ
What is the maximum operating frequency supported by the 7130LA55PF?
The 7130LA55PF does not operate at a fixed clock frequency-it is a fully asynchronous device. Its performance is defined by timing parameters: maximum read/write cycle time (tRC) is 55 ns, corresponding to a theoretical maximum sustained throughput of ~18.2 MHz per port when continuously cycling. Actual system speed depends on address/control setup/hold times and bus loading.
Does the 7130LA55PF require external pull-up resistors on BUSY pins?
Yes, the 7130LA55PF's BUSYL and BUSYR pins are open-drain outputs and require external pull-up resistors to VCC. A 4.7 kΩ resistor is recommended per the datasheet to ensure valid HIGH logic level during arbitration and meet VOL ≤ 0.5 V at IOL = 16 mA. Failure to install pull-ups will prevent correct BUSY flag assertion.
Can the 7130LA55PF be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the 7130LA55PF is exclusively a MASTER device. It contains on-chip arbitration logic and BUSY outputs, whereas SLAVE functionality (BUSY inputs, no arbitration logic) is implemented only in the IDT7140 family. Using a 7130LA55PF as a SLAVE would result in incorrect BUSY behavior and potential data corruption.
What is the data retention voltage specification for the 7130LA55PF?
The 7130LA55PF supports data retention at VCC = 2.0 V minimum, as specified in the LA variant's data retention characteristics table. At this voltage and TA = +25°C, ICCDR is guaranteed ≤ 4000 µA (commercial grade) or ≤ 100 µA (typical). Retention is not characterized below 2.0 V, and operation below 4.5 V is not supported.
Which package type does the 7130LA55PF use, and what are its mechanical dimensions?
The 7130LA55PF uses a 48-pin ceramic flatpack (FP48) package. Its body dimensions are approximately 0.75 inch × 0.75 inch × 0.11 inch (19.05 mm × 19.05 mm × 2.79 mm), with a 0.050 inch lead pitch. This hermetic, through-hole package is qualified for industrial temperature operation and offers superior moisture resistance compared to plastic DIP variants.
7130LA55PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7130LA55PF FAQ
1.How can I place an order for 7130LA55PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55PF 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 7130LA55PF reliable?
The price and inventory of 7130LA55PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55PF is usually 5 days.
3.What payment methods are accepted for 7130LA55PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55PF?
7130LA55PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55PF 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 7130LA55PF?
For technical support, including 7130LA55PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55PF requirements.
6.How does Aetrix verify that 7130LA55PF is sourced from the original manufacturer or authorized distributors?
All 7130LA55PF 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 7130LA55PF meets industry standards.
7.What is the process for return or replacement of 7130LA55PF?
All 7130LA55PF units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55PF, 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 7130LA55PF part is unused and in its original packaging.
Return procedure for 7130LA55PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA55PF Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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