Renesas 7024L35GB

Overview

7024L35GB from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 35 ns max read cycle time (tRC), 2V data retention capability, and full on-chip semaphore arbitration logic - used in real-time inter-processor communication systems requiring simultaneous memory access without external logic.

For engineers reviewing the 7024L35GB datasheet, 7024L35GB pinout, 7024L35GB application, or 7024L35GB equivalent, this page delivers verified timing specs, master/slave BUSY flag behavior, industrial-grade (-40°C to +85°C) operation, and TQFP-100 package–specific I/O mapping for deterministic dual-port memory integration.

Technical Context

The 7024L35GB implements fully asynchronous dual-port architecture with separate address, control, and bidirectional I/O buses per port, enabling concurrent reads/writes to any memory location. Its on-chip arbitration logic resolves port contention via BUSY flag assertion and supports semaphore signaling using A0–A2 address lines to manage eight shared resource flags.

It operates from a single 5.0 V ±10% supply, features TTL-compatible inputs/outputs, and includes automatic power-down via chip enable (CE). The L-version achieves 1 µA typical standby current (ISB3) and retains data at 2 V, making it suitable for battery-backed systems where low quiescent power is critical.

Key Specifications

Pinout & Package

7024L35GB is packaged in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm footprint, and 1.4 mm height. Pin assignments follow the PNG100 configuration as specified in IDT document 2740 drw 03.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-35AXC and AS7C34098B-35TIN, the 7024L35GB uniquely integrates master/slave BUSY signaling, on-chip semaphores, and 2 V data retention - delivering complete inter-processor memory coordination in a single 5 V device without layout or firmware overhead.

Availability

7024L35GB is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and redundant control system memory requiring stable component supply across extended product lifecycles.

Supply support for 7024L35GB 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 7024L35GB belongs to IDT's legacy dual-port SRAM product line, engineered for deterministic, low-latency memory sharing in safety-critical embedded systems where hardware arbitration and battery-backed retention are mandatory.

FAQ

What is the maximum operating speed of the 7024L35GB?

The 7024L35GB has a guaranteed maximum read cycle time (tRC) of 35 ns, supporting up to approximately 28.6 MHz random access throughput. This speed is validated across the full industrial temperature range (-40°C to +85°C) and 4.5 V–5.5 V supply, with all AC parameters including tAA, tACE, and tAOE meeting specification at this grade.

Does the 7024L35GB support battery backup operation?

Yes, the 7024L35GB supports battery backup operation with guaranteed data retention at VCC = 2.0 V. In data retention mode, it draws only 100 µA typical (up to 4 mA max) while preserving all 64 Kbits of memory content - a key feature distinguishing the "L" (low-power) variant from the "S" series.

How does the BUSY flag function in master vs. slave configuration?

When M/S = H (master), BUSYL/BUSYR are outputs asserting active-low during port contention. When M/S = L (slave), BUSYL/BUSYR become inputs that must be driven low by the master to gate local write operations. This enables hierarchical arbitration in multi-device cascades without external logic.

What package type is used for the 7024L35GB?

The 7024L35GB is supplied in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch and 14 mm × 14 mm body size (IDT package code PNG100). It is lead-free and RoHS-compliant, with thermal characteristics suitable for reflow soldering in industrial PCB assemblies.

Can the 7024L35GB perform simultaneous reads from both ports to the same address?

Yes - the 7024L35GB uses true dual-port SRAM cells that allow completely independent, simultaneous reads from both left and right ports to identical memory locations. No BUSY assertion or arbitration delay occurs in this mode, enabling lock-free data broadcast across processors.