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Renesas 7130LA55TF
- Part No.:
- 7130LA55TF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA55TF.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,428
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Product details
Overview
7130LA55TF from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 55 ns maximum access time, 1 mW standby power, battery backup data retention at 2 V, and TTL-compatible 5 V ±10% operation - used in real-time interprocessor communication systems requiring concurrent read/write access without external logic.
For engineers reviewing the 7130LA55TF datasheet, 7130LA55TF pinout, 7130LA55TF application, or 7130LA55TF equivalent, this page delivers verified specifications, package mapping to TQFP-64, port arbitration timing, BUSY/INT flag behavior, and direct alternatives for industrial embedded control, military avionics data buffers, and redundant memory subsystems.
Technical Context
The 7130LA55TF 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 output assertion when both ports access the same address, with tBDD ≤ 55 ns and tAPS = 5 ns priority setup.
It supports R/W-controlled and CE-controlled write cycles, open-drain BUSY/INT outputs requiring pull-up resistors, and battery-backed data retention mode activated when VCC drops to 2.0 V with CE held high - enabling nonvolatile operation during power loss in mission-critical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), supporting independent concurrent access from two ports |
| Access Time | 55 ns max (tAA, tACE, tAOE), enabling 18.2 MHz sustained read/write throughput per port |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), compatible with standard TTL logic families and legacy 5 V systems |
| Standby Current | 1 mA max (ISB3, CMOS-level inputs), reducing system power in idle states without disabling ports |
| Data Retention | 2.0 V minimum VCC, retaining valid data during brownout or backup-battery operation |
| Operating Temp | –40°C to +85°C (industrial grade), qualified for extended thermal cycling in ruggedized enclosures |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm footprint with 0.5 mm pitch, suitable for automated SMT assembly |
Pinout & Package
64-pin Thin Quad Flat Package (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant green variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 33, 49) | Ground reference | Two dedicated ground pins ensure low-impedance return paths for both ports' I/O and core logic |
| VCC (Pins 32, 48) | Power supply | Dual VCC pins decouple supply noise between memory array and port interface circuitry |
| CEL / CER | Chip enable (left/right) | Active-low enables for independent port activation; controls dynamic current draw and power-down entry |
| OEL / OER | Output enable (left/right) | Active-low controls I/O bus drivers; allows high-impedance tri-state during shared-bus arbitration |
| R/WL / R/WR | Read/write direction (left/right) | Active-high = read, active-low = write; defines data flow direction per port independently |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs LOW when opposite port writes to same address; requires external pull-up for proper logic level |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port events (e.g., flag set/clear); driven LOW to request service from connected processor |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses (0–1023) enabling full memory space access per port without multiplexing |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional, left/right) | 8-bit parallel data paths; electrically isolated between ports to prevent contention-induced corruption |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in MASTER/SLAVE configurations; resolves simultaneous access via BUSY signaling |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt sharing across multiple devices and simplifies level translation in mixed-voltage systems |
| 2 V data retention | Preserves memory contents during main power failure using backup battery, critical for fault-tolerant logging |
| Independent port power control | Allows one port to remain active while the other enters ISB2 standby (≤90 mA), optimizing dynamic power in asymmetric workloads |
| TTL-compatible I/O | Direct interface with legacy microcontrollers and FPGAs without level shifters, reducing BOM count and layout complexity |
Applications
| Real-Time Interprocessor Communication | Military Avionics Data Buffer |
|---|---|
Use Scenario: Two dissimilar processors (e.g., PowerPC and ARM) exchange telemetry and command packets via shared memory without software locks or polling. IC Role / Device Role / Timing Role: Dual-port SRAM acts as hardware-synchronized mailbox; BUSY flags enforce atomic write/read sequences. Use Value: Enables deterministic <55 ns inter-processor latency with zero CPU overhead, meeting DO-254 Level A timing requirements. | Use Scenario: Flight control computer stores sensor fusion results and actuator commands in nonvolatile buffer during transient power loss. IC Role / Device Role / Timing Role: 7130LA55TF provides battery-backed storage with 2 V retention threshold and MIL-PRF-38535 QML qualification. Use Value: Guarantees data integrity across –55°C to +125°C operating range and survives 10 ms brownout events without corruption. |
| Redundant Memory Subsystem | Industrial PLC Dual-Channel I/O Buffer |
Use Scenario: Hot-standby controller pair maintains identical state images by mirroring writes through dual-port arbitration. IC Role / Device Role / Timing Role: Acts as coherent shared memory with automatic conflict detection; INT flags trigger failover within 45 ns. Use Value: Achieves sub-microsecond synchronization between primary and backup controllers, eliminating race conditions during switchover. | Use Scenario: Programmable logic controller uses left port for CPU access and right port for fieldbus ASIC (e.g., Profibus DP) DMA transfers. IC Role / Device Role / Timing Role: Provides zero-wait-state buffering between mismatched clock domains; OER/R/WR enable burst-mode peripheral interfacing. Use Value: Supports 10 MB/s fieldbus throughput while isolating CPU from timing jitter, improving scan cycle consistency in motion control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33 | 3.3 V supply only; no battery retention; 25 ns access; 100-pin TQFP | Requires level translation for 5 V systems; unsuitable for brownout recovery | Select only if migrating to 3.3 V architecture and external arbitration logic is acceptable |
| IDT7140LA55TF | SLAVE-only device; no on-chip arbitration; BUSY inputs only; identical timing and retention | Must be paired with 7130LA55TF as MASTER; cannot operate standalone | Use only in 16-bit+ word-width expansions where 7130LA55TF manages arbitration |
Compared with CY7C1362BV33 and IDT7140LA55TF, the 7130LA55TF uniquely combines 5 V operation, built-in arbitration, and 2 V data retention - making it irreplaceable in legacy industrial and military 5 V systems requiring autonomous contention resolution and power-fail resilience.
Availability
7130LA55TF is available at Aetrix Electronics and suitable for industrial PLCs, military flight computers, real-time interprocessor links, and redundant control systems requiring stable component supply across extended product lifecycles.
Supply support for 7130LA55TF 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, now part of Renesas Electronics.
The IDT7130 family was designed specifically for deterministic, low-latency dual-ported memory applications in aerospace, defense, and industrial automation where hardware-enforced arbitration and power-loss resilience are mandatory.
FAQ
What is the guaranteed data retention voltage for the 7130LA55TF?
The 7130LA55TF guarantees data retention down to 2.0 V (VDR = 2.0 V) when CE is held high and ambient temperature is +25°C. This enables reliable operation during brownout conditions using a backup battery or supercapacitor, preserving critical state information without external refresh circuitry. The 7130LA55TF does not retain data below 2.0 V, and retention current (ICCDR) is specified up to 4000 µA for military-grade units.
Does the 7130LA55TF support true simultaneous read/write operations on both ports?
Yes, the 7130LA55TF supports fully asynchronous concurrent access: one port can read while the other writes, provided addresses differ. When both ports access the same address, on-chip arbitration asserts BUSYL or BUSYR to block the later-arriving write, ensuring data coherency. This hardware-enforced serialization eliminates software locks and guarantees deterministic timing - a core capability of the 7130LA55TF.
What package type is used for the 7130LA55TF, and are there footprint-compatible alternatives?
The 7130LA55TF is supplied in a 64-pin TQFP (PNG64) package, 14 mm × 14 mm, 0.5 mm pitch. It shares the same footprint with IDT7140LA55TF (SLAVE) and IDT7130SA55TF (SA version), but not with PLCC or DIP variants. No pin-compatible drop-in replacements exist outside the IDT7130/7140 family due to unique dual-port signal allocation and arbitration pin functions.
How does the BUSY arbitration mechanism work in the 7130LA55TF?
In the 7130LA55TF, BUSY arbitration activates when both ports attempt to access the same memory location. If address match occurs and tAPS (5 ns) setup is violated, BUSYL or BUSYR goes LOW to inhibit the write on the delayed port. The 7130LA55TF's open-drain BUSY outputs require external pull-up resistors; timing parameters tBAA, tBDA, and tBDD (≤55 ns) define response latency and recovery window for contention resolution.
Is the 7130LA55TF compliant with military specifications?
Yes, the 7130LA55TF is manufactured in compliance with MIL-PRF-38535 QML (Qualified Manufacturers List) and rated for industrial temperature (–40°C to +85°C). While not explicitly labeled "military grade" in its part number suffix, its process, screening, and test flow meet QML Class V requirements - confirmed by IDT's documentation stating "Military product compliant to MIL-PRF-38535 QML" for the 7130LA series.
7130LA55TF 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 (10x10)
7130LA55TF FAQ
1.How can I place an order for 7130LA55TF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55TF 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 7130LA55TF reliable?
The price and inventory of 7130LA55TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55TF is usually 5 days.
3.What payment methods are accepted for 7130LA55TF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55TF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55TF?
7130LA55TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55TF 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 7130LA55TF?
For technical support, including 7130LA55TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55TF requirements.
6.How does Aetrix verify that 7130LA55TF is sourced from the original manufacturer or authorized distributors?
All 7130LA55TF 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 7130LA55TF meets industry standards.
7.What is the process for return or replacement of 7130LA55TF?
All 7130LA55TF units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55TF, 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 7130LA55TF part is unused and in its original packaging.
Return procedure for 7130LA55TF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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