Renesas 7130LA55TFI

Overview

7130LA55TFI from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns max read cycle time, industrial temperature range (–40°C to +85°C), and battery-backed data retention at 2 V. It enables concurrent asynchronous access from left/right ports in real-time inter-processor communication systems.

For engineers reviewing the 7130LA55TFI datasheet, 7130LA55TFI pinout, 7130LA55TFI application, or 7130LA55TFI equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port power-down modes, and direct replacement guidance for legacy dual-port SRAM designs requiring deterministic contention resolution.

Technical Context

The 7130LA55TFI implements fully asynchronous dual-port operation with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves simultaneous access to the same memory location using address-match detection and priority setup time (tAPS = 5 ns).

As a MASTER device, it features open-drain BUSYL/BUSYR outputs (requiring external pull-ups) and INTL/INTR flags for port-to-port signaling; the SLAVE IDT7140 uses these signals as inputs to inhibit writes during contention. Battery backup mode retains data at VCC = 2.0 V with ICCDR ≤ 4000 µA (military/industrial grade).

Key Specifications

Pinout & Package

7130LA55TFI is packaged in a 48-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, body size 7 mm × 7 mm × 1.4 mm. Pin assignments are identical across FP48, LC48, and PDG48 variants per IDT documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-55AXC and IDT7140LA55TFI, the 7130LA55TFI uniquely integrates arbitration logic and open-drain BUSY outputs - enabling true standalone MASTER operation in real-time systems where deterministic contention resolution is mandatory.

Availability

7130LA55TFI is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial motion control, and military avionics data logging requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 7130LA55TFI 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, and RF solutions, now part of Renesas Electronics.

The IDT7130/7140 family was designed specifically for deterministic dual-ported memory applications in embedded control, digital signal processing, and military systems requiring hardware-enforced arbitration and battery-backed retention.

FAQ

What is the maximum operating temperature range for the 7130LA55TFI?

The 7130LA55TFI is qualified for industrial temperature operation from –40°C to +85°C. This rating is verified per IDT's specification tables and applies across all DC and AC electrical parameters including tRC = 55 ns, ISB3 = 0.2 mA, and VDR = 2.0 V data retention. It is not rated for commercial (0°C to +70°C) or military (–55°C to +125°C) grades.

Does the 7130LA55TFI support true dual-port read/write concurrency?

Yes, the 7130LA55TFI supports fully asynchronous concurrent read/write operations on left and right ports. Each port has independent CE, OE, R/W, address, and I/O lines. When accessing different addresses, both ports operate simultaneously with no timing penalty; when accessing the same address, on-chip arbitration asserts BUSYL/BUSYR within tBAA ≤ 30 ns to block the later-arriving write.

How does the BUSY arbitration mechanism work on the 7130LA55TFI?

The 7130LA55TFI uses address-match detection and tAPS = 5 ns priority setup time to determine which port wins contention. If both ports assert CE and present matching addresses within tAPS, the earlier-stabilized port proceeds; the later port sees BUSYL or BUSYR pulled low (open-drain), inhibiting its write. BUSY outputs require 4.7 kΩ pull-up resistors to VCC per IDT application guidance.

Can the 7130LA55TFI retain data during power loss?

Yes, the 7130LA55TFI supports battery backup data retention at VCC = 2.0 V. In this mode, ICCDR is guaranteed ≤ 4000 µA (military/industrial grade) and data remains valid indefinitely as long as voltage stays ≥2.0 V. This feature is exclusive to LA versions; SA variants do not support data retention below 4.5 V.

What package type is used for the 7130LA55TFI?

The 7130LA55TFI uses a 48-pin TQFP (Thin Quad Flat Package) with 7 mm × 7 mm body and 0.5 mm lead pitch. This matches the "TFI" suffix in the part number and is distinct from FP48 (flatpack), LC48 (LCC), or PDG48 (DIP) variants - all sharing identical pinout but differing in thermal and mechanical characteristics.