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Renesas 7130LA25PF
- Part No.:
- 7130LA25PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA25PF.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,666
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Product details
Overview
7130LA25PF 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, 1 mA typical standby current, and battery-backed data retention down to 2 V. It enables simultaneous independent read/write access from left and right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130LA25PF datasheet, 7130LA25PF pinout, 7130LA25PF application, or 7130LA25PF equivalent, key selection criteria include port arbitration timing (tBAA ≤ 25 ns), BUSY output open-drain drive capability, INT flag generation for cross-port signaling, and compatibility with 5 V ±10% TTL-level interfaces in industrial temperature environments.
Technical Context
The 7130LA25PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention when both ports access the same memory location, asserting BUSYL/BUSYR outputs to stall the later-arriving write.
As a MASTER device, it features open-drain BUSY outputs requiring external pull-up resistors, supports interrupt flag generation (INTL/INTR) via dedicated address-match writes, and provides battery backup data retention at 2 V - a capability exclusive to LA-grade variants and confirmed for this part number.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit data width per port) |
| Access Time | 25 ns max - guarantees full-speed operation in 40 MHz bus systems with no wait states |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL logic families without level translation |
| Standby Current | 1 mA typ. - enables ultra-low-power hold mode during system sleep or idle cycles |
| Data Retention | 2.0 V min - retains memory contents during brown-out or battery-backup operation |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Package | 48-pin Flatpack (FP48) - hermetically sealed ceramic package for high-reliability applications |
Pinout & Package
7130LA25PF is housed in a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ footprint and 0.11″ height, rated for industrial temperature operation and featuring gold-plated leads for solderability and corrosion resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access (0x000–0x3FF) |
| A0R–A9R | Right port address inputs | 10-bit address bus for right-side memory access (0x000–0x3FF) |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; tristated when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; tristated when OER = VIH or CER = VIH |
| CEL / CER | Chip enable (left/right) | Active-low enables port logic; controls ISB1/ISB2 standby current modes |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z when deasserted |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of I/O data flow |
| BUSYL / BUSYR | Arbitration status (open-drain) | Asserted low during port contention; requires external 4.7 kΩ pull-up to VCC |
| INTL / INTR | Interrupt flag outputs | Open-drain flags set/cleared by dedicated address-match writes (e.g., A9–A0 = 3FFh) |
| VCC / GND | Power supply pins | All VCC pins must be decoupled locally; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to identical addresses without external glue logic, reducing BOM count and PCB area |
| Open-drain BUSY outputs | Enable wired-OR arbitration across multiple dual-port RAMs in multi-master systems |
| Port-to-port interrupt signaling | INTL/INTR flags support event-driven synchronization between processors without polling overhead |
| 2 V data retention | Preserves memory contents during main power loss using backup battery, critical for nonvolatile state storage |
| TTL-compatible interface | Eliminates need for level shifters when interfacing with legacy microcontrollers and FPGAs operating at 5 V |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without shared clock or bus master. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as synchronized mailbox with hardware arbitration preventing data corruption during concurrent access. Use Value: Eliminates software semaphores and reduces inter-CPU latency to sub-25 ns, enabling deterministic response in motor control loops. | Use Scenario: DSP core writes processed audio samples into memory while host MCU reads them for display or network transmission. IC Role / Device Role / Timing Role: Dual-port buffer decouples processing and I/O timing domains, absorbing jitter between asynchronous clocks. Use Value: Prevents FIFO underrun/overrun; sustains sustained 40 MB/s throughput (25 ns cycle × 8-bit width × 2 ports). |
| Industrial PLC Data Exchange | Battery-Backed Configuration Storage |
Use Scenario: PLC main CPU and safety monitor CPU share I/O status and diagnostic flags in harsh EMI environments. IC Role / Device Role / Timing Role: Hardware-arbitrated memory ensures atomic updates to critical safety variables under worst-case timing skew. Use Value: Meets SIL-2 functional safety requirements by guaranteeing consistent memory state during fault conditions. | Use Scenario: Embedded gateway retains network credentials, calibration tables, and firmware update metadata during AC power failure. IC Role / Device Role / Timing Role: LA-grade SRAM maintains data integrity at 2 V using onboard coin-cell backup, independent of main 5 V rail. Use Value: Enables zero-data-loss recovery after brown-out events; eliminates need for EEPROM wear leveling or write endurance management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C135-25JC | 5 V, 1K × 8, 25 ns, 44-pin PLCC; no built-in arbitration; requires external BUSY logic | Lacks on-chip arbitration and INT flag - demands additional discrete logic for contention resolution | Select when cost sensitivity outweighs design simplicity and board space constraints |
| IDT7140LA25PF | SLAVE dual-port SRAM; same speed/package; BUSY inputs only; no arbitration logic | Designed exclusively for expansion with 7130 as MASTER; cannot operate stand-alone as arbitration node | Use only in paired MASTER/SLAVE configurations to extend data bus width beyond 8 bits |
Compared with CY7C135-25JC and IDT7140LA25PF, the 7130LA25PF uniquely integrates arbitration, interrupt, and battery-retention functions in a single 48-pin FP48 package - reducing component count, eliminating timing-critical external logic, and enabling self-contained dual-CPU coordination.
Availability
7130LA25PF is available at Aetrix Electronics and suitable for real-time interprocessor communication, industrial PLC data exchange, and battery-backed configuration storage requiring stable component supply across extended product lifecycles.
Supply support for 7130LA25PF 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 for communications, computing, and industrial markets.
The IDT7130/7140 family was designed specifically for deterministic, low-latency interprocessor communication in mission-critical embedded systems where hardware-enforced memory coherency and power-fail resilience are mandatory.
FAQ
What is the guaranteed maximum access time for the 7130LA25PF?
The 7130LA25PF has a guaranteed maximum access time of 25 ns across the full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This value is specified for tAA (address access time), tACE (chip enable access time), and tAOE (output enable access time), ensuring deterministic timing in hard real-time systems. The 7130LA25PF meets this spec without derating under worst-case voltage and temperature conditions.
Does the 7130LA25PF support true simultaneous read/write operations on both ports?
Yes, the 7130LA25PF supports fully asynchronous, simultaneous read and write operations on left and right ports - provided they target different memory addresses. When both ports access the same location, its on-chip arbitration logic asserts BUSYL or BUSYR to stall the later-arriving write, preventing data corruption. This behavior is intrinsic to the MASTER architecture and verified in Truth Table III of the official datasheet.
How does the battery backup function work on the 7130LA25PF?
The 7130LA25PF supports data retention at VCC = 2.0 V minimum, drawing ≤4000 µA (military/industrial grade) during retention mode. When main VCC drops below ~3.0 V, the device automatically enters low-power retention - preserving all 1K × 8 memory contents without external circuitry. This feature is exclusive to LA-grade variants and is electrically characterized, not just theoretical.
Are the BUSY outputs on the 7130LA25PF push-pull or open-drain?
The BUSYL and BUSYR outputs on the 7130LA25PF are open-drain, requiring external pull-up resistors (typically 4.7 kΩ to VCC) to generate valid HIGH levels. This is explicitly stated in Note 1 of the Functional Block Diagram and confirmed in Pin Configuration diagrams. Driving these outputs directly as push-pull will cause functional failure and is prohibited per datasheet specifications.
Can the 7130LA25PF operate as a standalone 8-bit dual-port RAM without a SLAVE device?
Yes, the 7130LA25PF is fully functional as a standalone 8-bit dual-port SRAM. Its MASTER designation indicates it contains on-chip arbitration logic and BUSY outputs - features needed even in single-device configurations to manage internal port contention. The SLAVE IDT7140 is optional and used only when expanding to 16-bit or wider data paths; the 7130LA25PF requires no companion device for basic dual-port operation.
7130LA25PF 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:
- 25ns
- Access Time:
- 25 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)
7130LA25PF FAQ
1.How can I place an order for 7130LA25PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA25PF 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 7130LA25PF reliable?
The price and inventory of 7130LA25PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA25PF is usually 5 days.
3.What payment methods are accepted for 7130LA25PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA25PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA25PF?
7130LA25PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA25PF 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 7130LA25PF?
For technical support, including 7130LA25PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA25PF requirements.
6.How does Aetrix verify that 7130LA25PF is sourced from the original manufacturer or authorized distributors?
All 7130LA25PF 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 7130LA25PF meets industry standards.
7.What is the process for return or replacement of 7130LA25PF?
All 7130LA25PF units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA25PF, 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 7130LA25PF part is unused and in its original packaging.
Return procedure for 7130LA25PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA25PF Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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