Renesas 7024L25PFI

Overview

7024L25PFI from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 25 ns max read cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It supports simultaneous asynchronous access, on-chip semaphore arbitration, and battery-backed data retention down to 2V - used in real-time inter-processor communication and shared-memory embedded systems.

For engineers reviewing the 7024L25PFI datasheet, 7024L25PFI pinout, 7024L25PFI application, or 7024L25PFI equivalent, key selection criteria include dual-port arbitration timing (tBDD ≤ 30 ns), low standby power (1 mW typ.), 100-pin TQFP package compatibility, and support for MASTER/SLAVE cascading in 32-bit memory expansion.

Technical Context

The 7024L25PFI implements full hardware port arbitration with dedicated BUSY flag signaling, interrupt generation (INTL/INTR), and eight fully independent semaphore registers accessible via A0–A2. Its dual-port architecture enables concurrent reads from identical addresses without contention.

It operates in two distinct modes: RAM access (CE = VIL, UB/LB = VIL, SEM = VIH) and semaphore access (CE = VIH or UB&LB = VIH, SEM = VIL), with separate timing specifications for each. The L-version delivers ultra-low ISB3 full-standby current of 0.2 mA typ. at CMOS-level inputs.

Key Specifications

Pinout & Package

7024L25PFI is packaged in a 100-pin TQFP (PNG100) with 0.5 mm pitch, 14 mm × 14 mm body, and 1.4 mm height. Pin functions are symmetrically distributed across left (L) and right (R) ports to support bidirectional memory mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV25 and AS7C34096B, the 7024L25PFI uniquely integrates 2V data retention, hardware semaphore registers, and configurable BUSY-based port arbitration - reducing system-level component count and eliminating timing-critical software synchronization.

Availability

7024L25PFI is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and medical imaging equipment requiring stable component supply across extended product lifecycles.

Supply support for 7024L25PFI 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 7024L25PFI belongs to IDT's legacy dual-port SRAM family designed for deterministic real-time inter-processor communication in mission-critical embedded systems where hardware arbitration and low-power retention are mandatory.

FAQ

What is the maximum operating frequency supported by the 7024L25PFI?

The 7024L25PFI guarantees a 25 ns maximum read cycle time (tRC), supporting sustained dual-port operation up to 40 MHz. This timing applies across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply, with no derating required for thermal or voltage variation.

Does the 7024L25PFI support true simultaneous read operations from both ports to the same memory address?

Yes, the 7024L25PFI features true dual-ported memory cells that allow concurrent reads from identical addresses on left and right ports without contention or data corruption. This capability is inherent to its silicon architecture and requires no external arbitration.

How does the M/S pin affect BUSY signal behavior on the 7024L25PFI?

When M/S = HIGH, the 7024L25PFI operates as Master: BUSYL and BUSYR are push-pull outputs reflecting internal arbitration state. When M/S = LOW, it operates as Slave: BUSYL and BUSYR become inputs, accepting BUSY assertions from a Master device in cascaded configurations.

Can the 7024L25PFI retain data when powered solely by a 2V backup battery?

Yes, the 7024L25PFI guarantees data retention at VCC = 2.0 V minimum, with ICCDR ≤ 4000 µA (typ. 100 µA) across military and industrial temperature ranges. This enables reliable operation during main power loss without volatile data loss.

What package type is used for the 7024L25PFI, and are there lead-free options?

The 7024L25PFI is supplied in a 100-pin Thin Quad Flatpack (TQFP, package code PNG100), 14 mm × 14 mm, 0.5 mm pitch. Per IDT documentation, "Green parts" - RoHS-compliant, lead-free variants - are available; ordering code suffix 'PFI' confirms Pb-free finish and industrial temperature grade.