Renesas 7024L20PFGI

Overview

IDT7024L20PFGI from IDT (Integrated Device Technology) is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 20 ns max access time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous reads/writes to the same memory location and supports MASTER/SLAVE cascading for 32-bit+ bus expansion in real-time embedded control systems.

For engineers reviewing the IDT7024L20PFGI datasheet, IDT7024L20PFGI pinout, IDT7024L20PFGI application, or IDT7024L20PFGI equivalent, key selection considerations include its on-chip semaphore logic, BUSY flag arbitration, battery-backed data retention at 2V, separate upper/lower byte controls, and compatibility with 100-pin TQFP layouts for space-constrained industrial controllers.

Technical Context

The IDT7024L20PFGI implements full hardware port arbitration with dedicated BUSY output (MASTER) or input (SLAVE), interrupt flag generation, and eight fully supported semaphore registers addressable via A0–A2. Its dual-port architecture permits concurrent access without external logic, eliminating bus contention in tightly coupled processor pairs.

It features automatic power-down via chip enable (CE), delivering 1 µA typical standby current in full CMOS-level disable mode. The device supports both R/W-controlled and CE/UB/LB-controlled write cycles, with strict timing windows for semaphore flag update (tSOP = 10 ns) and contention resolution (tSPS = 5 ns).

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-20AXC and R1EX24002DPX-20, IDT7024L20PFGI delivers integrated hardware arbitration and industrial-grade reliability in a drop-in 100-pin TQFP package - reducing BOM count and enabling certified operation in harsh environments without design compromise.

Availability

IDT7024L20PFGI is available at Aetrix Electronics and suitable for industrial PLCs, avionics data loggers, and medical imaging systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for IDT7024L20PFGI 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 high-performance timing, memory, and interface solutions, now part of Renesas Electronics since 2019.

The IDT7024 product line was designed for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, battery backup, and industrial environmental resilience.

FAQ

What is the maximum guaranteed access time for IDT7024L20PFGI?

IDT7024L20PFGI has a maximum guaranteed access time of 20 ns across the full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This value applies to both read and write operations and is validated under worst-case process, voltage, and temperature corners - ensuring deterministic timing in hard real-time systems.

Does IDT7024L20PFGI support battery backup operation?

Yes, IDT7024L20PFGI supports battery backup operation with guaranteed data retention at VCC = 2.0 V minimum. In this mode, it draws ≤5 µA typical current (ISB3), enabling multi-day retention on standard lithium coin cells - a key feature distinguishing the 'L' (low-power) variant from the 'S' series.

How does the Master/Slave configuration work on IDT7024L20PFGI?

IDT7024L20PFGI uses the M/S pin to configure its role: when M/S = HIGH, BUSYL becomes an output flag indicating port contention; when M/S = LOW, BUSYR serves as an input to synchronize with a master device. This enables seamless cascading of multiple IDT7024L20PFGI units for wider data buses without external glue logic.

What is the function of the semaphore logic in IDT7024L20PFGI?

IDT7024L20PFGI integrates eight hardware semaphore flags accessible via A0–A2 address lines and controlled by SEML/SEMR. These flags provide atomic set/clear/read operations to coordinate resource access between ports - eliminating software polling and enabling lock-free synchronization in dual-CPU architectures.

Is IDT7024L20PFGI pin-compatible with other IDT7024 variants?

IDT7024L20PFGI is pin-compatible with all IDT7024 family members in the 100-pin TQFP (PNG100) package, including IDT7024S20PFGI and IDT7024L25PFGI. Differences are limited to speed grade (20 ns vs. 25 ns) and power class (L vs. S), allowing direct substitution where timing and power budgets permit.