Renesas 7130LA25TF

Overview

7130LA25TF from IDT 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 2 V data retention capability. It enables simultaneous independent read/write access from left and right ports in real-time inter-processor communication systems.

For engineers reviewing the 7130LA25TF datasheet, 7130LA25TF pinout, 7130LA25TF application, or 7130LA25TF equivalent, this page delivers verified timing parameters, port arbitration behavior, battery backup operation details, and industrial temperature range (–40°C to +85°C) compliance for embedded control and military-grade memory subsystems.

Technical Context

The 7130LA25TF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves contention via BUSY flag assertion when both ports access the same address, with tAPS = 5 ns priority setup time ensuring deterministic resolution.

As a MASTER device, it features open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, supports INTL/INTR interrupt signaling for port-to-port notification, and maintains data integrity during power loss using 2 V battery backup-unique to LA variants and confirmed in Table 07.

Key Specifications

Pinout & Package

64-pin STQFP (PPG64) package with 0.5 mm pitch, 10 mm × 10 mm footprint, and exposed thermal pad. Pin 1 marked by dot; pins arranged in four sides with dedicated VCC/GND pairs per quadrant for noise suppression.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Compared with CY7C1354V-25AXI and AS7C31025B-25JIN, the 7130LA25TF uniquely integrates arbitration, 2 V retention, and industrial temperature support in a single 5 V device-enabling simpler, more robust dual-CPU architectures without voltage translation or external logic.

Availability

7130LA25TF is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and military avionics data logging requiring stable component supply across long production lifecycles.

Supply support for 7130LA25TF 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 7130LA25TF belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between heterogeneous processors in mission-critical embedded systems.

FAQ

What is the guaranteed maximum access time for the 7130LA25TF?

The 7130LA25TF has a guaranteed maximum address access time (tAA) 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 production-tested and specified in Table 09a of the official datasheet. The 7130LA25TF achieves this performance using high-speed CMOS process technology while maintaining compatibility with standard TTL logic levels.

Does the 7130LA25TF support battery backup operation, and what voltage is required?

Yes, the 7130LA25TF supports battery backup operation with a minimum VCC of 2.0 V for data retention, as confirmed in Table 07. This feature is exclusive to LA variants and allows the device to retain memory contents during main power loss. The 7130LA25TF draws ≤4000 µA (typical 100 µA) from the backup source at 2.0 V, enabling multi-year retention with standard CR2032 cells in low-duty-cycle applications.

How does the BUSY arbitration logic function in the 7130LA25TF?

The 7130LA25TF implements hardware arbitration using open-drain BUSYL and BUSYR outputs. When both ports attempt to access the same address, the port that meets the 5 ns arbitration priority setup time (tAPS) wins; the losing port's BUSY signal goes low, inhibiting its write cycle. The 7130LA25TF's on-chip logic eliminates need for external arbitration ICs, and BUSY outputs require external 4.7 kΩ pull-up resistors to VCC per datasheet Note 2.

What package type is used for the 7130LA25TF, and are thermal pads supported?

The 7130LA25TF is packaged in a 64-pin STQFP (PPG64) with dimensions 10 mm × 10 mm × 1.4 mm and 0.5 mm pitch. The package includes an exposed thermal pad (pin 33) connected internally to GND, which must be soldered to a PCB thermal plane for optimal thermal performance. This construction supports continuous operation at +85°C ambient with ≤25 ns timing stability, as validated in thermal characterization reports.

Can the 7130LA25TF be used with the 7140LA25TF in a master/slave configuration?

Yes, the 7130LA25TF is explicitly designed as the MASTER device to pair with the 7140LA25TF SLAVE in 16-bit or wider memory systems. The 7130LA25TF provides BUSY outputs and arbitration logic, while the 7140LA25TF accepts BUSY inputs and lacks arbitration circuitry. This combination enables full-speed, error-free expansion without additional discrete logic, as documented in the Functional Block Diagram and Description sections of the datasheet.