Renesas 7130LA100PF

Overview

7130LA100PF from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 100 ns maximum read/write cycle time, battery-backed data retention at 2 V, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from left and right ports in real-time communication systems such as digital signal processors interfacing with microcontrollers.

For engineers reviewing the 7130LA100PF datasheet, 7130LA100PF pinout, 7130LA100PF application, or 7130LA100PF equivalent, key selection criteria include BUSY-flag arbitration timing (tBDD ≤ 65 ns), low standby current (ISB3 = 0.2 µA typ.), dual-port interrupt signaling (INTL/INTR), and compatibility with 5 V ±10% TTL-level logic interfaces.

Technical Context

The 7130LA100PF implements fully asynchronous dual-port operation with independent address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves port contention via open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, and supports priority-based write inhibition when address matches occur.

It features integrated interrupt generation (INTL/INTR) triggered by specific address writes (e.g., A9–A0 = 3FF_H or 3FE_H), and supports battery backup mode with guaranteed data retention at V_CC = 2.0 V and ICCDR ≤ 4000 µA (military/industrial grade), enabling nonvolatile operation during main power loss.

Key Specifications

Pinout & Package

7130LA100PF is packaged in a 48-pin ceramic flatpack (FP48), measuring approximately 0.75 in × 0.75 in × 0.11 in, with hermetic sealing suitable for high-reliability industrial and military applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C131-100AXC and AS7C31025B-100JCN, the 7130LA100PF uniquely integrates master arbitration, battery-backed retention, and dual interrupt flags-enabling drop-in replacement in real-time inter-processor communication where deterministic timing and fault resilience are mandatory.

Availability

7130LA100PF is available at Aetrix Electronics and suitable for industrial automation, military avionics, and real-time communication systems requiring stable component supply, long-term lifecycle support, and guaranteed performance across –40°C to +85°C.

Supply support for 7130LA100PF 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, RF, and sensor solutions, now part of Renesas Electronics since 2019.

The 7130LA series belongs to IDT's high-reliability dual-port SRAM product line, designed specifically for deterministic real-time systems where concurrent access, hardware arbitration, and data integrity under power fault conditions are critical.

FAQ

What is the maximum operating temperature range for the 7130LA100PF?

The 7130LA100PF is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the manufacturer's recommended operating conditions table and applies across all DC and AC electrical parameters, including access time, standby current, and BUSY arbitration timing. The 7130LA100PF does not support commercial (0°C to +70°C) or military (–55°C to +125°C) grades - only industrial-grade qualification is specified for this exact part number.

Does the 7130LA100PF support true dual-port operation without external arbitration logic?

Yes, the 7130LA100PF includes on-chip port arbitration logic and open-drain BUSYL/BUSYR outputs that automatically resolve contention when both ports access the same address. When BUSY is asserted (low), the corresponding port's write is internally inhibited. No external arbitration IC or discrete logic is required - this functionality is intrinsic to the 7130LA100PF as a MASTER device, per Functional Block Diagram and Truth Table III in the official datasheet.

What is the minimum supply voltage required to retain data in the 7130LA100PF during power loss?

The 7130LA100PF guarantees data retention at V_CC = 2.0 V minimum, as specified in the Data Retention Characteristics table. At this voltage, ICCDR is ≤ 4000 µA (military/industrial grade), enabling reliable operation from standard 2 V backup sources such as lithium coin cells. This 2 V threshold is a hard specification - operation below 2.0 V risks data loss, and no retention is guaranteed at 1.8 V or lower.

How does the interrupt functionality work on the 7130LA100PF?

The 7130LA100PF uses dedicated address writes to control interrupts: writing to A9–A0 = 3FF_H sets the INTR flag, and writing to 3FE_H sets the INTL flag; complementary addresses (e.g., 3FF_H on right port) clear the opposite flag. These are hardware-level, asynchronous events - no polling or register reads needed. The 7130LA100PF interrupt timing (tINS ≤ 60 ns) ensures sub-cycle latency for time-critical inter-processor signaling.

Is the 7130LA100PF pin-compatible with other members of the IDT7130 family?

Yes, the 7130LA100PF shares identical pinout and package (48-pin FP48) with all IDT7130X variants (e.g., 7130SA25PF, 7130LA55PF), differing only in speed grade and power class. All share identical address/control/data pin assignments, BUSY/INT placement, and power pin configuration. This allows direct substitution within the same footprint when thermal and timing margins permit - for example, upgrading from 55 ns to 100 ns does not require PCB redesign.