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Renesas 7130LA25TFI8
- Part No.:
- 7130LA25TFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA25TFI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,676
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Product details
Overview
7130LA25TFI8 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, 25 ns maximum access time, industrial temperature range (–40°C to +85°C), and battery-backed data retention down to 2.0 V. It enables simultaneous independent read/write access from left and right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130LA25TFI8 datasheet, 7130LA25TFI8 pinout, 7130LA25TFI8 application, or 7130LA25TFI8 equivalent, key selection criteria include BUSY-flag arbitration timing (tBAA ≤ 25 ns), dual-port standby current (ISB3 = 0.2 mA typ.), TTL-compatible 5V ±10% supply, and 48-pin TQFP package compatibility with legacy IDT7130 designs.
Technical Context
The 7130LA25TFI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves contention via BUSYL/BUSYR open-drain outputs (requiring external pull-ups) and supports port-to-port interrupt signaling through INTL/INTR pins.
It features automatic power-down controlled by CEL/CER, CMOS-level full-standby mode (ISB3 = 0.2 mA typ.), and battery backup data retention at VCC = 2.0 V (ICCDR ≤ 4000 µA). The device is fabricated in high-performance CMOS and complies with MIL-PRF-38535 QML for industrial reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide); supports independent addressing per port without internal banking. |
| Access Time | 25 ns max (tAA, tACE, tAOE); guarantees deterministic latency for real-time dual-CPU handshake protocols. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); compatible with standard TTL logic families and eliminates need for level shifters. |
| Operating Temp | –40°C to +85°C; validated for industrial embedded control, motor drives, and telecom line cards. |
| Standby Current | 0.2 mA typical (ISB3, CMOS-level inputs); enables ultra-low-power sleep modes in battery-backed systems. |
| Data Retention | 2.0 V minimum (VDR); retains memory contents during brown-out or backup-battery operation. |
| Package | 48-pin TQFP (PPG64); 10 mm × 10 mm footprint with 0.5 mm pitch - RoHS-compliant and reflow-solderable. |
Pinout & Package
48-pin Thin Quad Flat Package (TQFP), PPG64 variant: 10 mm × 10 mm body, 0.5 mm lead pitch, exposed thermal pad (not electrically connected), JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins minimize ground bounce and support stable dual-port switching noise margins. |
| VCC (Pins 23, 26) | Power supply | Dual VCC pins reduce IR drop and improve decoupling effectiveness across high-frequency I/O transitions. |
| CEL / CER | Chip enable (left/right) | Independent active-low enables allow selective port power-down without affecting the other port's operation. |
| OEL / OER | Output enable (left/right) | Asynchronous output gating per port; enables bus sharing with other peripherals without tristate conflicts. |
| R/WL / R/WR | Read/write direction (left/right) | Active-high write control; eliminates need for external inverters in synchronous bus architectures. |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Indicates port contention; requires external 4.7 kΩ pull-up to VCC for proper BUSY assertion timing (tBAA ≤ 25 ns). |
| INTL / INTR | Interrupt request (open-drain) | Signals inter-port events (e.g., write to 3FFH sets INTR); supports priority-based CPU handshaking without polling. |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit independent address buses; no internal multiplexing - enables true concurrent access to same or different locations. |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional, left/right) | Separate 8-bit data paths prevent bus contention; no external transceivers needed for full-duplex interprocessor links. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to identical addresses without external glue logic; guarantees deterministic BUSY assertion within 25 ns. |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt and arbitration busing across multiple dual-port RAMs in multi-master systems. |
| Battery backup data retention | Maintains stored data at 2.0 V supply - critical for nonvolatile storage in UPS, PLC, and medical backup subsystems. |
| Master-only BUSY generation | 7130LA25TFI8 asserts BUSY flags; 7140 SLAVE devices accept BUSY as input - enforces strict MASTER/SLAVE hierarchy. |
| Full CMOS standby mode | Draws only 0.2 mA when both CE inputs are high and all inputs held at rail - extends battery life in portable instrumentation. |
Applications
| Real-Time Interprocessor Communication | Industrial Motion Control |
|---|---|
Use Scenario: Two microcontrollers exchange status and command data via shared memory without software overhead or bus arbitration delays. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as zero-latency mailbox with hardware-enforced mutual exclusion via BUSY flags. Use Value: Eliminates polling loops and software semaphores; guarantees sub-25 ns response to cross-processor interrupts (INTL/INTR). | Use Scenario: PLC main CPU writes motion profiles to servo controller while servo firmware reads updates and writes position feedback. IC Role / Device Role / Timing Role: Dual-port buffer synchronizes deterministic real-time data flow between safety-critical motion engine and supervisory CPU. Use Value: Enables jitter-free 10 kHz position update cycles using tRC = 25 ns read/write cycles and tAPS = 5 ns arbitration setup. |
| Telecom Line Card Buffering | Medical Imaging Data Pipeline |
Use Scenario: DSP and ARM processor share packet buffers in VoIP gateway; one writes encoded voice frames while the other reads for network transmission. IC Role / Device Role / Timing Role: High-speed 1K × 8 SRAM provides low-latency, conflict-free access to streaming audio buffers. Use Value: Sustains 20 MB/s aggregate bandwidth (tWC = 25 ns) with no wait states - meets G.711 codec throughput requirements. | Use Scenario: FPGA-accelerated image acquisition writes raw sensor data while ARM host reads processed DICOM frames for display and storage. IC Role / Device Role / Timing Role: Battery-backed dual-port RAM preserves critical imaging buffers during unexpected power loss. Use Value: Ensures zero data loss during brown-out events via 2.0 V data retention (VDR) and <4 µA retention current (ICCDR). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-25JC | 5V, 1K × 8, 25 ns, 48-pin SOJ; no built-in arbitration logic; BUSY must be implemented externally. | Lacks on-chip port arbitration - requires discrete logic or FPGA logic for contention resolution. | Select when board space allows external arbitration and cost sensitivity outweighs design simplicity. |
| AS7C31026B-25TIN | 3.3V core, 1K × 8, 25 ns, 48-pin TQFP; no BUSY/INT pins; CMOS I/O only. | Not pin-compatible; requires level-shifting for 5V systems and lacks hardware interrupt signaling. | Choose only for new 3.3V designs where legacy 5V interoperability and arbitration are handled elsewhere. |
Compared with CY7C136-25JC and AS7C31026B-25TIN, the 7130LA25TFI8 delivers integrated arbitration and 5V TTL compatibility in the same 48-pin TQFP footprint - reducing BOM count and eliminating timing-critical external logic.
Availability
7130LA25TFI8 is available at Aetrix Electronics and suitable for real-time interprocessor communication, industrial motion control, and telecom line card buffering requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.
Supply support for 7130LA25TFI8 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, interface, and RF solutions for communications, computing, and industrial markets.
The IDT7130 family was designed specifically for deterministic, low-latency interprocessor communication in dual-CPU systems - delivering hardware arbitration, battery backup, and true asynchronous dual-port operation in a single IC.
FAQ
What is the maximum operating temperature range for the 7130LA25TFI8?
The 7130LA25TFI8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all electrical specifications including access time (25 ns max), standby current (ISB3 = 0.2 mA typ.), and data retention (2.0 V min). It is not qualified for military-grade –55°C to +125°C operation - that rating applies only to MIL-PRF-38535 QML versions with different suffixes.
Does the 7130LA25TFI8 support true simultaneous read/write operations on both ports?
Yes, the 7130LA25TFI8 supports fully asynchronous, independent read and write operations on left and right ports. Each port has dedicated address, control, and data lines - enabling concurrent access to the same or different memory locations. When contention occurs (identical addresses), on-chip arbitration asserts BUSYL or BUSYR within 25 ns to block the later-arriving write, preserving data integrity without external logic.
How does the battery backup function work on the 7130LA25TFI8?
The 7130LA25TFI8 supports data retention at VCC = 2.0 V with ICCDR ≤ 4000 µA (industrial grade). During brown-out, the device enters data retention mode automatically when CE pins are held high and VCC drops below 4.5 V. No external circuitry is required - the internal CMOS latch structure maintains state as long as VCC ≥ 2.0 V, making it ideal for UPS, PLC, and medical backup applications.
Is the 7130LA25TFI8 pin-compatible with other IDT7130 variants like the 7130SA25TFI8?
Yes, the 7130LA25TFI8 shares identical pinout, package (48-pin TQFP), and AC/DC electrical interface with all IDT7130X25 variants including 7130SA25TFI8. The only functional difference is power consumption: LA versions deliver 0.2 mA full-standby current (ISB3) versus 1.0 mA for SA versions, and support 2.0 V data retention - all while maintaining identical timing (tAA = 25 ns max) and logic thresholds.
What external components are required for proper BUSY signal operation on the 7130LA25TFI8?
BUSYL and BUSYR are open-drain outputs and require external pull-up resistors to VCC. A 4.7 kΩ resistor per BUSY line is recommended to ensure tBAA ≤ 25 ns propagation delay and adequate noise margin. Pull-ups must be placed close to the 7130LA25TFI8 pins; unused BUSY lines should still be pulled up to prevent floating nodes and unintended arbitration behavior.
7130LA25TFI8 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (10x10)
7130LA25TFI8 FAQ
1.How can I place an order for 7130LA25TFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA25TFI8 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 7130LA25TFI8 reliable?
The price and inventory of 7130LA25TFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA25TFI8 is usually 5 days.
3.What payment methods are accepted for 7130LA25TFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA25TFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA25TFI8?
7130LA25TFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA25TFI8 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 7130LA25TFI8?
For technical support, including 7130LA25TFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA25TFI8 requirements.
6.How does Aetrix verify that 7130LA25TFI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA25TFI8 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 7130LA25TFI8 meets industry standards.
7.What is the process for return or replacement of 7130LA25TFI8?
All 7130LA25TFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA25TFI8, 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 7130LA25TFI8 part is unused and in its original packaging.
Return procedure for 7130LA25TFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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