Renesas 7024L20PFI8

Overview

7024L20PFI8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 20 ns maximum access time (industrial grade), 1 mW typical standby power, TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic - deployed in real-time inter-processor communication systems requiring simultaneous read/write access to shared memory.

For engineers reviewing the 7024L20PFI8 datasheet, 7024L20PFI8 pinout, 7024L20PFI8 application, or 7024L20PFI8 equivalent, key selection criteria include dual-port arbitration timing (tAPS = 5 ns), BUSY flag behavior under M/S = VIH, battery-backed data retention at 2V, and compatibility with 84-pin PLCC packaging for legacy industrial control backplanes.

Technical Context

The 7024L20PFI8 implements full hardware port arbitration with dedicated BUSY output (Master) / BUSY input (Slave) signaling and integrated semaphore logic supporting eight flags addressed via A0–A2. It operates fully asynchronously from either port without external logic.

Its dual-port architecture enables simultaneous reads of the same memory location, while write contention is resolved via priority-based arbitration with tBDD ≤ 30 ns (for 20 ns speed grade) and tAPS = 5 ns setup guarantee. Battery backup mode retains data at VCC = 2V with ICCDR ≤ 4 µA (typ.) in industrial temperature range.

Key Specifications

Pinout & Package

84-pin Plastic Leaded Chip Carrier (PLCC, package code PLG84), body size ≈ 1.15 in × 1.15 in × 0.17 in, lead pitch 0.05 in, RoHS-compliant green variant available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-20AXC and IDT70V24L20PF, the 7024L20PFI8 uniquely supports 5V-only operation with guaranteed 2V data retention and industrial temperature range in the 84-pin PLCC footprint - making it irreplaceable in legacy-reliant, battery-backed, and thermally demanding deployments.

Availability

7024L20PFI8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data concentrators, and medical imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for 7024L20PFI8 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, acquired by Renesas in 2019.

The IDT7024 family was engineered for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, battery backup, and industrial-grade reliability over cost-optimized commodity SRAM.

FAQ

What is the maximum operating temperature range for the 7024L20PFI8?

The 7024L20PFI8 is rated for industrial temperature operation from −40°C to +85°C. This specification is verified per manufacturer test conditions and applies to all DC and AC parameters in the datasheet. The 7024L20PFI8 does not support military or commercial grade temperature ranges - its PFI8 suffix explicitly denotes industrial qualification.

Does the 7024L20PFI8 support battery backup, and what voltage is required?

Yes, the 7024L20PFI8 supports battery backup with guaranteed data retention down to VCC = 2.0 V. In this mode, typical data retention current is 100 µA (max 4 µA), enabling operation from standard lithium coin cells. The 7024L20PFI8 must be operated in L-version (low-power) configuration - confirmed by the "L" in its part number - to achieve this capability.

How does the BUSY signal function in master versus slave configuration for the 7024L20PFI8?

When M/S = H (Master), BUSYL/BUSYR are outputs that assert during port contention to block conflicting writes. When M/S = L (Slave), BUSYL/BUSYR become inputs sampled by the local port before initiating a write. The 7024L20PFI8's BUSY timing is characterized with tBAA ≤ 20 ns and tBDD ≤ 30 ns - values specific to the 20 ns speed grade and validated under industrial temperature conditions.

What package type is used by the 7024L20PFI8, and is it RoHS compliant?

The 7024L20PFI8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG84 in IDT documentation. Its body dimensions are approximately 1.15 in × 1.15 in × 0.17 in. The "I8" suffix confirms industrial temperature and green (lead-free/RoHS-compliant) construction - verified in IDT's ordering information and material declarations.

Can the 7024L20PFI8 perform simultaneous reads from both ports to the same memory address?

Yes, the 7024L20PFI8 features true dual-port memory cells that allow simultaneous reads from both left and right ports to identical addresses without contention or timing penalty. This capability is inherent to its cell architecture - not dependent on external arbitration - and is guaranteed across the full industrial temperature range and 20 ns access specification.