Renesas 7130LA100PF8

Overview

7130LA100PF8 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, 100 ns maximum read/write cycle time, 1 mA typical standby current (LA version), and battery-backed data retention down to 2 V. It enables simultaneous independent access from left and right ports in real-time embedded control systems requiring deterministic memory contention resolution.

For engineers reviewing the 7130LA100PF8 datasheet, 7130LA100PF8 pinout, 7130LA100PF8 application, or 7130LA100PF8 equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, dual-supply retention capability, and direct alternative part comparisons for industrial and military-grade memory subsystem design.

Technical Context

The 7130LA100PF8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (left/right), enabling concurrent read/write operations without external logic. Its on-chip arbitration logic resolves address-contention events via open-drain BUSY outputs (BUSYL/BUSYR) and supports port-to-port interrupt signaling through INTL/INTR pins.

It operates at 5.0 V ±10% with TTL-compatible I/O, features automatic power-down controlled by CE inputs per port, and guarantees 2 V data retention in LA variants-enabling nonvolatile backup during main supply loss. The device complies with MIL-PRF-38535 QML for military applications and supports industrial temperature range (–40°C to +85°C).

Key Specifications

Pinout & Package

7130LA100PF8 is packaged in a 48-pin ceramic flatpack (FP48), measuring approximately 0.75 in × 0.75 in × 0.11 in, with side-brazed hermetic sealing suitable for high-reliability military and aerospace applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C131-100AXC, 7130LA100PF8 reduces BOM count and improves timing predictability via integrated arbitration; versus IDT7140LA100PF8, it uniquely serves as the system's arbitration authority and interrupt source-making it irreplaceable in standalone dual-port control nodes.

Availability

7130LA100PF8 is available at Aetrix Electronics and suitable for real-time motion control, digital signal processing buffers, military avionics data loggers, and industrial PLC redundancy modules requiring stable component supply across extended product lifecycles.

Supply support for 7130LA100PF8 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 IDT7130/7140 family was designed specifically for deterministic, low-latency shared-memory architectures in military, industrial, and communications systems where port arbitration and data coherency are critical.

FAQ

What is the function of BUSYL and BUSYR on the 7130LA100PF8?

BUSYL and BUSYR are open-drain arbitration status outputs on the 7130LA100PF8. When the opposite port initiates a write to the same memory address, the corresponding BUSY signal goes LOW to inhibit writes on the asserting port. Both require external pull-up resistors to VIH, and they cannot be LOW simultaneously due to internal priority logic.

Does the 7130LA100PF8 support true simultaneous read/write operations?

Yes-the 7130LA100PF8 supports fully asynchronous, independent read and write operations on left and right ports. However, if both ports access the same address concurrently, on-chip arbitration asserts BUSY to block the later-arriving write, ensuring data coherency without external intervention.

How does the 2 V data retention feature work in the 7130LA100PF8?

The 7130LA100PF8 retains stored data at VCC = 2.0 V with ICCDR ≤ 4000 µA (military grade). This is achieved via optimized CMOS cell design and low-leakage fabrication. During main supply dropout, a backup battery or capacitor maintains ≥2 V on VCC, preserving memory contents until power resumes.

Can the 7130LA100PF8 be used without external pull-up resistors on BUSY and INT pins?

No-BUSYL, BUSYR, INTL, and INTR are open-drain outputs on the 7130LA100PF8 and require external pull-up resistors (typically 4.7 kΩ to 5 V) to establish valid HIGH logic levels. Omitting pull-ups results in undefined or floating states, causing arbitration and interrupt failures.

What is the difference between 7130LA100PF8 and 7140LA100PF8 in a system design?

The 7130LA100PF8 is the MASTER device with on-chip arbitration logic and BUSY output capability; the 7140LA100PF8 is the SLAVE device that accepts BUSY as an input and lacks arbitration circuitry. In system design, only the 7130LA100PF8 can serve as the sole dual-port memory controller-7140LA100PF8 must be paired with it to expand data width.