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Renesas 7130LA55PF8
- Part No.:
- 7130LA55PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA55PF8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,794
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Product details
Overview
7130LA55PF8 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, 55 ns maximum read/write cycle time, TTL-compatible 5V ±10% supply, 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 7130LA55PF8 datasheet, 7130LA55PF8 pinout, 7130LA55PF8 application, or 7130LA55PF8 equivalent, this page delivers verified timing parameters, dual-port arbitration behavior, BUSY/INT flag operation, low-power standby current (1 mA typ.), and flatpack package mechanical details - all critical for deterministic memory coherency in avionics and industrial control designs.
Technical Context
The 7130LA55PF8 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 output assertion when address matches occur, with tBDD ≤ 55 ns ensuring valid read data after BUSY deassertion.
It supports MASTER-only functions: open-drain BUSYL/BUSYR outputs requiring external pull-ups, INTL/INTR flags for cross-port interrupt signaling, and battery backup mode enabling 2V data retention - features absent in SLAVE IDT7140 variants and not shared across SA/LA speed grades.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), providing compact dual-access buffer for embedded inter-processor messaging. |
| Access Time | 55 ns max (tAA, tACE, tAOE), guaranteeing deterministic latency in hard real-time systems with 18.2 MHz sustained throughput. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), compatible with legacy TTL logic families without level-shifting circuitry. |
| Standby Current | 1 mA typical (ISB3, CMOS-level CE), enabling ultra-low-power hold mode during system sleep states. |
| Data Retention | 2.0 V minimum (VDR), allowing backup from coin-cell batteries or supercapacitors during main power loss. |
| Operating Temp | –40°C to +85°C (industrial grade), validated for deployment in motor drives and railway signaling equipment. |
| Package | 48-pin ceramic flatpack (FP48), hermetically sealed for high-reliability applications in harsh environments. |
Pinout & Package
48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ body, 0.11″ height, and side-brazed leads - rated for MIL-PRF-38535 QML Class B compliance and extended thermal cycling reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access; must be stable before CE/WE assertion per tAS = 0 ns requirement. |
| A0R–A9R | Right port address inputs | Independent 10-bit address bus enabling simultaneous access to same or different locations from opposite ports. |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit TTL-compatible I/O; high-impedance when OEL = VIH or CEL = VIH, eliminating bus contention risk. |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left port I/Os; no internal multiplexing - true parallel dual-port operation. |
| BUSYL / BUSYR | Open-drain arbitration flags | Asserted LOW during address match to block writes; require external 4.7kΩ pull-up to VCC for proper logic level restoration. |
| INTL / INTR | Cross-port interrupt outputs | Active-HIGH flags set/cleared by writing to dedicated addresses (3FEh/3FFh); enable lock-free synchronization between processors. |
| CEL / CER | Chip enable (active LOW) | Independent enables per port; ISB2 current (45 mA typ.) applies when one CE = VIL and the other = VIH. |
| OEL / OER | Output enable (active LOW) | Gate data drivers independently; tHZ = 25 ns max ensures fast bus release during multi-drop configurations. |
| R/WL / R/WR | Read/write control | Active-LOW signals determining direction; write pulse width tWP ≥ 30 ns required for reliable data capture at 55 ns speed grade. |
| VCC / GND | Power supply pins | Four VCC and two GND pins distributed across package to minimize switching noise and ensure stable core voltage under dynamic load. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoders or glue logic in dual-CPU architectures - reduces BOM count and PCB area. |
| Open-drain BUSY outputs | Enables wired-OR connection of multiple 7130LA devices for scalable shared-memory systems with centralized BUSY arbitration. |
| Port-to-port interrupt signaling | Hardware-accelerated inter-processor notification via dedicated INTL/INTR pins - avoids polling overhead and guarantees sub-45 ns interrupt latency. |
| 2V data retention mode | Preserves memory contents during brown-out or controlled shutdown using backup power, critical for flight-critical state preservation. |
| MIL-PRF-38535 QML compliance | Qualified for military/aerospace use with full lot traceability, radiation hardness assurance, and extended temperature validation. |
Applications
| Avionics Data Bus Bridge | Industrial PLC Dual-Core Interface |
|---|---|
Use Scenario: Interfacing dissimilar avionics subsystems (e.g., FMS and FADEC) requiring deterministic, lock-free data exchange over ARINC 429 and MIL-STD-1553 busses. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as time-deterministic message buffer with BUSY-controlled write arbitration and INT-driven event notification. Use Value: Guarantees tBDD ≤ 55 ns data validity after BUSY deassertion, enabling sub-millisecond response to engine fault events without software locks. | Use Scenario: Synchronizing motion control and safety monitoring cores in SIL-3-rated programmable logic controllers. IC Role / Device Role / Timing Role: Provides atomic read-modify-write capability across CPU domains using hardware arbitration instead of software semaphores. Use Value: Eliminates race conditions during emergency stop sequences by enforcing strict port priority via tAPS = 5 ns setup window. |
| Railway Signaling Redundancy Module | Medical Imaging Real-Time Buffer |
Use Scenario: Maintaining synchronized state between hot-standby signaling processors in EBIOS-certified railway interlocking systems. IC Role / Device Role / Timing Role: Battery-backed 7130LA55PF8 retains critical route tables during switchover, with BUSY arbitration preventing inconsistent updates. Use Value: 2V data retention ensures zero data loss during 100 ms power interruption - meeting EN 50126/50128 availability requirements. | Use Scenario: Staging raw sensor data from CT/MRI detector arrays for parallel reconstruction pipelines running on separate DSP clusters. IC Role / Device Role / Timing Role: Acts as zero-latency FIFO between acquisition and processing engines, leveraging independent port bandwidths up to 18.2 MB/s each. Use Value: 55 ns access enables real-time pixel streaming at 12-bit depth without frame buffering bottlenecks or dropped slices. |
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 lacks on-chip arbitration and BUSY/INT logic; requires external priority encoder. | Suitable only where software-managed coherency is acceptable; not drop-in for hardware-arbitrated systems. | Select only if redesigning arbitration logic into FPGA or MCU firmware is feasible. |
| IDT7140LA55PF8 | Same speed/package, but SLAVE-only: BUSY pins are inputs (not outputs), no arbitration logic, no INT flag generation. | Valid only as expansion device paired with 7130LA55PF8 in 16-bit+ systems; cannot replace MASTER functionality. | Use exclusively as companion SLAVE in width-expanded memory subsystems - never as standalone replacement. |
Compared with CY7C131-55JC and IDT7140LA55PF8, the 7130LA55PF8 uniquely integrates arbitration, interrupt, and battery-retention in a single FP48 package - making it irreplaceable for safety-critical, hardware-synchronized dual-processor designs where external logic would compromise MTBF or certification scope.
Availability
7130LA55PF8 is available at Aetrix Electronics and suitable for avionics data bus bridges, industrial PLC dual-core interfaces, railway signaling redundancy modules, and medical imaging real-time buffers requiring stable component supply across extended product lifecycles.
Supply support for 7130LA55PF8 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 timing, memory interface, and RF solutions, now part of Renesas Electronics.
The IDT7130/7140 family was designed specifically for deterministic inter-processor communication in safety-critical embedded systems - emphasizing hardware-enforced memory coherency, low-latency arbitration, and extended environmental reliability.
FAQ
What is the maximum operating temperature range for the 7130LA55PF8?
The 7130LA55PF8 is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and qualified under MIL-PRF-38535 QML for extended thermal stability in demanding environments like motor control cabinets and railcar underfloor electronics.
Does the 7130LA55PF8 support true simultaneous read/write operations across ports?
Yes - the 7130LA55PF8 allows fully asynchronous, concurrent access: one port may read while the other writes to the same or different addresses. When addresses match, on-chip arbitration asserts BUSY to prevent corruption, with tBDD ≤ 55 ns defining the delay to valid read data after BUSY deassertion.
How does battery backup work on the 7130LA55PF8?
The 7130LA55PF8 enters data retention mode when VCC drops to 2.0 V; ICCDR remains ≤ 4000 µA (military/industrial) or ≤ 1500 µA (commercial), preserving stored data indefinitely as long as backup voltage is maintained - confirmed in Table 7 of the official datasheet.
What pull-up resistance is required for BUSYL and BUSYR on the 7130LA55PF8?
BUSYL and BUSYR are open-drain outputs requiring external pull-up resistors to VCC. A 4.7 kΩ resistor is recommended per datasheet Note 1 and Figure 3, ensuring VOL ≤ 0.5 V at IOL = 16 mA while maintaining noise margin and rise time within specification.
Can the 7130LA55PF8 be used without external arbitration logic?
Yes - the 7130LA55PF8 contains complete on-chip arbitration logic including BUSY output generation, priority resolution (tAPS = 5 ns), and automatic write inhibition during contention. No external gates, PLDs, or FPGA logic are needed to implement safe dual-port access.
7130LA55PF8 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:
- 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)
7130LA55PF8 FAQ
1.How can I place an order for 7130LA55PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55PF8 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 7130LA55PF8 reliable?
The price and inventory of 7130LA55PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55PF8 is usually 5 days.
3.What payment methods are accepted for 7130LA55PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55PF8?
7130LA55PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55PF8 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 7130LA55PF8?
For technical support, including 7130LA55PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55PF8 requirements.
6.How does Aetrix verify that 7130LA55PF8 is sourced from the original manufacturer or authorized distributors?
All 7130LA55PF8 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 7130LA55PF8 meets industry standards.
7.What is the process for return or replacement of 7130LA55PF8?
All 7130LA55PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55PF8, 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 7130LA55PF8 part is unused and in its original packaging.
Return procedure for 7130LA55PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA55PF8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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