Renesas 7024L30J

Overview

7024L30J from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 30 ns max read cycle time (tRC), 2V data retention capability, and full on-chip semaphore arbitration logic - deployed in real-time interprocessor communication systems requiring simultaneous memory access without external logic.

For engineers reviewing the 7024L30J datasheet, 7024L30J pinout, 7024L30J application, or 7024L30J equivalent, this page delivers verified timing specs, master/slave BUSY flag behavior, industrial-temperature operation (–40°C to +85°C), and TQFP-100 package compatibility for deterministic dual-port memory integration.

Technical Context

The 7024L30J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent read/write operations to the same memory location. Its on-chip arbitration logic resolves port contention via BUSY flag signaling and supports semaphore flag management across eight dedicated registers addressed by A0–A2.

It features TTL-compatible 5V (±10%) single-supply operation, battery backup mode with 2V data retention, and low-power standby current of 1 µA typical. The device supports both R/W-controlled and CE/UB/LB-controlled write cycles, with precise timing windows defined for tEW, tWP, tDW, and tBDD under master/slave configurations.

Key Specifications

Pinout & Package

7024L30J is housed in a 100-pin TQFP (PNG100) package with 0.5 mm pitch, 14 mm × 14 mm footprint, and 1.4 mm profile. Pin assignments follow standard dual-port layout with mirrored left/right I/O banks, dedicated semaphore and interrupt flags, and dual chip enable (CEL/CER), output enable (OEL/OER), and byte select (UBL/UBR, LBL/LBR) controls.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-25JC and AS7C34096A-20BIN, the 7024L30J uniquely integrates hardware semaphore arbitration, master/slave BUSY signaling, and 2V data retention in a single 100-pin TQFP - reducing BOM count, PCB area, and firmware complexity for industrial and avionics interprocessor links.

Availability

7024L30J is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffering, redundant control system memory, and avionics data acquisition modules requiring stable component supply across extended lifecycle programs.

Supply support for 7024L30J 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, acquired by Renesas in 2019.

The 7024L30J belongs to IDT's legacy high-speed dual-port SRAM product line, engineered for deterministic, low-latency memory sharing in mission-critical embedded systems where hardware arbitration eliminates software bottlenecks.

FAQ

What is the maximum guaranteed read cycle time for the 7024L30J?

The 7024L30J has a maximum read cycle time (tRC) of 30 ns across its specified industrial temperature range (–40°C to +85°C) and 4.5 V to 5.5 V supply. This value is production-tested and ensures reliable operation in high-throughput dual-port applications such as real-time DSP buffering and interprocessor communication.

Does the 7024L30J support battery backup operation, and what voltage is required?

Yes, the 7024L30J supports battery backup operation with guaranteed data retention at VCC = 2.0 V. In this mode, standby current is typically 100 µA (max 4 mA), enabling long-term data hold during main power loss - a key feature for avionics and industrial control systems requiring nonvolatile memory persistence.

How does the M/S pin affect BUSY signal behavior on the 7024L30J?

When M/S = H, the 7024L30J operates as a Master: BUSYL and BUSYR are active outputs that assert during port contention. When M/S = L, it operates as a Slave: BUSYL and BUSYR become inputs, allowing external master devices to control arbitration - essential for cascading multiple 7024L30J units into wider data buses without external logic.

Can the 7024L30J perform simultaneous reads from both ports to the same memory address?

Yes, the 7024L30J uses true dual-port SRAM cells that allow fully asynchronous, simultaneous reads from both left and right ports to the exact same memory location. No BUSY assertion or arbitration delay occurs during concurrent reads - only during write-write or read-write contention, which is resolved via hardware semaphore or BUSY signaling.

What package type is used for the 7024L30J, and are thermal pads supported?

The 7024L30J is packaged in a 100-pin Thin Quad Flatpack (TQFP, code PNG100) with 0.5 mm pitch, 14 mm × 14 mm body, and 1.4 mm height. It does not include an exposed thermal pad; thermal management relies on standard PCB copper pour and multiple VCC/GND pins distributed across the perimeter for low-impedance heat dissipation.