Renesas 7130LA25PFGI

Overview

7130LA25PFGI 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, industrial temperature range (–40°C to +85°C), and battery backup data retention down to 2.0 V. It enables concurrent asynchronous read/write access from left and right ports in real-time communication systems such as digital signal processors interfacing with microcontrollers.

For engineers reviewing the 7130LA25PFGI datasheet, 7130LA25PFGI pinout, 7130LA25PFGI application, or 7130LA25PFGI equivalent, key selection considerations include its dual-port arbitration capability, BUSY/INT flag signaling for port-to-port coordination, 1 mW standby power consumption, and compatibility with TTL-level 5 V ±10% supply - all critical for deterministic memory sharing in embedded control and test equipment.

Technical Context

The 7130LA25PFGI implements fully asynchronous dual-port operation with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves simultaneous access contention by asserting open-drain BUSY outputs (BUSYL/BUSYR) and supports interrupt generation via INTL/INTR pins for inter-processor signaling.

It features automatic power-down controlled by CE inputs per port, enabling two distinct standby modes: ISB1 (TTL-level CE high, 25 mA typical) and ISB3 (CMOS-level CE high, 0.2 mA typical). Data retention at 2.0 V is guaranteed for LA variants, with tCDR = 0 ns and ICCDR ≤ 4000 µA under military/industrial conditions.

Key Specifications

Pinout & Package

7130LA25PFGI is housed in a 64-pin Thin Quad Flat Package (TQFP), designated PFGI per IDT's ordering nomenclature. The package provides 48 signal pins (including dual-port I/O, address, control, and arbitration signals), 4 VCC, 4 GND, and 8 no-connect (N/C) pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1354V25 and AS7C31025B-25JIN, the 7130LA25PFGI uniquely integrates on-chip arbitration and 2.0 V data retention - making it the only choice for deterministic, battery-backed dual-processor memory sharing without external logic or voltage translation.

Availability

7130LA25PFGI is available at Aetrix Electronics and suitable for industrial PLCs, automated test equipment, real-time DSP subsystems, and digital communications bridges requiring stable component supply across extended product lifecycles.

Supply support for 7130LA25PFGI 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 high-performance interconnect solutions, now part of Renesas Electronics.

The 7130LA25PFGI belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between heterogeneous processors in industrial and military systems.

FAQ

What is the function of BUSYL and BUSYR on the 7130LA25PFGI?

BUSYL and BUSYR are open-drain arbitration status outputs on the 7130LA25PFGI. When asserted low, they indicate that the corresponding port (left or right) is blocked from writing due to address contention with the opposite port. These signals require external pull-up resistors and enable hardware-level synchronization without software polling. The 7130LA25PFGI uses these flags to enforce deterministic access priority based on tAPS timing.

Does the 7130LA25PFGI support true simultaneous read operations from both ports?

Yes, the 7130LA25PFGI supports fully asynchronous, simultaneous reads from both left and right ports without contention or BUSY assertion. Reads do not trigger arbitration - only simultaneous writes to the same address location cause BUSY activation. This allows concurrent data fetching by two processors, such as a DSP reading sensor results while a host MCU reads configuration data, with no performance penalty.

How does the 7130LA25PFGI achieve 2.0 V data retention, and what are the design implications?

The 7130LA25PFGI achieves 2.0 V data retention through optimized CMOS cell design and LA-series low-voltage threshold transistors. At VCC = 2.0 V, it maintains stored data with ICCDR ≤ 4000 µA (military/industrial grade), enabling operation from backup batteries or supercapacitors during main supply failure. Designers must ensure CE remains asserted (VIH) and avoid address/control transitions during retention mode.

Can the 7130LA25PFGI be used as a SLAVE device in a MASTER/SLAVE configuration?

No, the 7130LA25PFGI is exclusively a MASTER device with on-chip arbitration logic and BUSY outputs. For SLAVE functionality - which accepts BUSY inputs and disables writes when BUSY is low - the companion IDT7140LA25PFGI must be used. The 7130LA25PFGI cannot operate as a SLAVE because its BUSY pins are outputs only and lack internal input-enable circuitry required for slave-side contention detection.

What is the significance of the 'PFGI' suffix in 7130LA25PFGI?

The 'PFGI' suffix in 7130LA25PFGI denotes a 64-pin Thin Quad Flat Package (TQFP) with industrial temperature range (–40°C to +85°C) and lead-free, RoHS-compliant construction. 'PF' = TQFP, 'G' = green (halogen-free), 'I' = industrial grade. This distinguishes it from other packages like 'PDG48' (DIP) or 'PLG52' (PLCC), ensuring correct PCB footprint and thermal design for the 7130LA25PFGI.