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Renesas 7130LA20TF
- Part No.:
- 7130LA20TF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA20TF.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,735
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Product details
Overview
7130LA20TF 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 access time, 5 V ±10% single-supply operation, and battery-backed data retention down to 2 V - used in real-time inter-processor communication systems requiring concurrent read/write access without external logic.
For engineers reviewing the 7130LA20TF datasheet, 7130LA20TF pinout, 7130LA20TF application, or 7130LA20TF equivalent, key selection criteria include its master arbitration capability, 2 V data retention, open-drain BUSY outputs requiring pull-up resistors, and compatibility with IDT7140 SLAVE devices for 16-bit+ memory expansion.
Technical Context
The 7130LA20TF implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via BUSY flag assertion, and it supports interrupt-driven inter-port signaling using INTL/INTR pins tied to dedicated address-mapped locations (e.g., A9–A0 = 3FFH for interrupt set).
It operates in three power states: active (typ. 110 mA), TTL-level standby (typ. 30 mA), and CMOS-level full standby (typ. 1.0 mA); the LA variant achieves 200 µW typical battery-retention current at 2 V, enabled by CE-controlled automatic power-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,024 × 8 bits - provides byte-wide dual-access storage for embedded co-processor or FPGA-to-ASIC handshake buffers. |
| Access Time | 20 ns (max.) - enables direct interface with 50 MHz bus systems without wait states. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL/CMOS 5 V logic families and industrial 5 V rails. |
| Data Retention | 2.0 V minimum - allows backup from coin-cell or supercapacitor during main power loss. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment. |
| Power Dissipation | Active: 550 mW typ.; Standby: 1 mW typ. - reduces thermal load in dense PCB layouts. |
| Package | 48-pin TQFP (PPG64) - surface-mount footprint with 10 mm × 10 mm body and 1.4 mm height for automated assembly. |
Pinout & Package
7130LA20TF is housed in a 48-pin thin quad flatpack (TQFP) package designated PPG64, measuring 10 mm × 10 mm × 1.4 mm, with lead pitch of 0.5 mm and exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | All four GND pins must be low-inductance connected to system ground plane to ensure signal integrity and noise immunity. |
| VCC (Pins 23, 47) | Power supply | Two dedicated 5 V supply pins reduce IR drop and support simultaneous port switching currents. |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; when both high, device enters ISB1 standby mode (30 mA typ.). |
| OEL / OER | Output enable (left/right) | Active-low controls I/O drivers; high-Z state permits bus sharing without external transceivers. |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of data flow on associated I/O bus. |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Outputs indicate port contention; require external pull-up resistors to VCC for proper HIGH logic level. |
| INTL / INTR | Interrupt request (open-drain) | Flag set/reset via dedicated address writes (e.g., A9–A0 = 3FFH); also require pull-up resistors. |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses select one of 1,024 memory locations per port; no internal latching. |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | Byte-wide bidirectional data paths; driven only when CE and OE are asserted and R/W defines direction. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoders or glue logic in dual-CPU or DSP+FPGA shared-memory topologies. |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt aggregation and multi-master BUSY sharing across multiple dual-port RAMs. |
| Master/Slave expandability | 7130LA20TF (MASTER) pairs with IDT7140LA20TF (SLAVE) to construct 16-bit or wider memory without cycle penalties. |
| 2 V data retention | Preserves memory contents during brown-out or controlled shutdown, supporting fail-safe state recovery. |
| TTL-compatible I/O | Direct interface with legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry. |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two independent CPUs exchange sensor data and control commands via shared memory with deterministic latency. IC Role / Device Role / Timing Role: 7130LA20TF acts as MASTER dual-port SRAM providing atomic read/write access with BUSY-flag arbitration to prevent data corruption. Use Value: Enables lock-free communication at 50 MHz bus speed while eliminating software semaphore overhead and external arbitration ICs. | Use Scenario: An FPGA-accelerated DSP pipeline uses ping-pong buffering between acquisition and processing stages. IC Role / Device Role / Timing Role: 7130LA20TF serves as low-latency, byte-accessible buffer memory with independent left/right ports for simultaneous fill and drain operations. Use Value: Achieves zero-wait-state throughput for 20 ns access-critical algorithms, reducing pipeline stalls and jitter in real-time audio/video processing. |
| Industrial PLC Memory Coherency | Redundant Control System State Sharing |
Use Scenario: Primary and backup PLC controllers maintain synchronized operational state through mirrored memory regions. IC Role / Device Role / Timing Role: 7130LA20TF functions as fault-tolerant shared memory with hardware-enforced write collision detection via BUSY signals. Use Value: Guarantees consistent state transfer during switchover events, meeting SIL-2 functional safety requirements without software intervention. | Use Scenario: Dual-redundant flight control computers share telemetry and actuator command history for cross-checking. IC Role / Device Role / Timing Role: 7130LA20TF operates as battery-backed shared memory with 2 V retention, preserving critical state during primary power failure. Use Value: Ensures continuity of mission-critical data across power-loss events, satisfying DO-254/ED-80 retention duration requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-20AXC | 2 K × 16 organization, 3.3 V core, LVCMOS I/O; no built-in arbitration or BUSY logic. | Requires external priority encoder for contention resolution; suited for non-real-time or software-managed dual-access. | Select when migrating to 3.3 V systems and adding external arbitration logic is acceptable. |
| IDT7140LA20TF | SLAVE-only dual-port; lacks on-chip arbitration, BUSY outputs, and interrupt generation; shares identical timing and retention specs. | Must be paired with 7130LA20TF as MASTER; cannot operate stand-alone in arbitration-critical roles. | Choose only as companion device in 16-bit+ memory expansions where 7130LA20TF handles arbitration. |
Compared with CY7C024AV-20AXC and IDT7140LA20TF, the 7130LA20TF uniquely integrates arbitration, interrupt, and 2 V retention in a 1K × 8 MASTER configuration - making it irreplaceable in deterministic, low-power, real-time shared-memory systems without external logic.
Availability
7130LA20TF is available at Aetrix Electronics and suitable for industrial automation, avionics data logging, and real-time embedded control requiring stable component supply, long-term lifecycle support, and guaranteed MIL-PRF-38535 QML-compliant manufacturing traceability.
Supply support for 7130LA20TF 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, RF, and high-performance computing solutions, now part of Renesas Electronics.
The IDT7130/7140 product line was designed specifically for deterministic, low-latency inter-processor communication in military, industrial, and telecom infrastructure - emphasizing hardware arbitration, battery backup, and wide temperature operation.
FAQ
What is the function of BUSYL and BUSYR on the 7130LA20TF?
BUSYL and BUSYR are open-drain arbitration flag outputs on the 7130LA20TF. When asserted LOW, they indicate that the corresponding port (left or right) is blocked due to address contention with the opposite port. These signals require external pull-up resistors to VCC and are used to stall writes until contention clears - a core feature enabling deterministic dual-port operation without external logic.
Does the 7130LA20TF support true simultaneous read/write access to the same memory location?
No - the 7130LA20TF does not permit simultaneous read/write to the same address. Its on-chip arbitration logic detects contention and asserts BUSYL or BUSYR to inhibit the later-arriving write. The winning port completes its access; the losing port's write is ignored, ensuring data coherency. This behavior is documented in Truth Table III and timing waveforms for BUSY arbitration.
Can the 7130LA20TF operate with only one port active while the other is disabled?
Yes - the 7130LA20TF supports asymmetric operation. With CEL = VIH and CER = VIL, only the right port is active; the left port enters full standby (ISB4), drawing just 45 mA typ. This mode reduces dynamic power and is commonly used in master-slave configurations where one side handles host interface and the other connects to peripheral logic.
What is the significance of the '20' and 'TF' suffixes in 7130LA20TF?
In 7130LA20TF, '20' denotes 20 ns maximum access time, 'LA' specifies low-power/battery-retention variant, and 'TF' indicates 48-pin TQFP (PPG64) package. This exact ordering code maps to industrial temperature range (–40°C to +85°C), 5 V supply, and green (lead-free) compliance - confirmed in IDT's official ordering information tables.
How is interrupt generation implemented on the 7130LA20TF?
Interrupt generation on the 7130LA20TF uses dedicated address-mapped writes: writing to A9–A0 = 3FFH sets the INTR flag (right port), while 3FEH sets INTL (left port); complementary addresses clear them. These open-drain flags require pull-up resistors and are edge-triggered - enabling hardware-synchronized event signaling between processors without polling overhead.
7130LA20TF 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:
- 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 (10x10)
7130LA20TF FAQ
1.How can I place an order for 7130LA20TF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA20TF 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 7130LA20TF reliable?
The price and inventory of 7130LA20TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA20TF is usually 5 days.
3.What payment methods are accepted for 7130LA20TF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA20TF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA20TF?
7130LA20TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA20TF 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 7130LA20TF?
For technical support, including 7130LA20TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA20TF requirements.
6.How does Aetrix verify that 7130LA20TF is sourced from the original manufacturer or authorized distributors?
All 7130LA20TF 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 7130LA20TF meets industry standards.
7.What is the process for return or replacement of 7130LA20TF?
All 7130LA20TF units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA20TF, 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 7130LA20TF part is unused and in its original packaging.
Return procedure for 7130LA20TF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA20TF Tags
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