Renesas 7024L35PF8

Overview

IDT7024L35PF8 from IDT (Integrated Device Technology) is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 35 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and battery-backed data retention down to 2V. It supports simultaneous asynchronous access, on-chip semaphore signaling, and master/slave cascading for 32-bit+ bus expansion in real-time inter-processor communication systems.

For engineers reviewing the IDT7024L35PF8 datasheet, IDT7024L35PF8 pinout, IDT7024L35PF8 application, or IDT7024L35PF8 equivalent, key selection considerations include its 35 ns access timing, 1 µA full-standby current (CMOS-level inputs), dual-port arbitration logic, 84-pin PLCC package, and industrial temperature range (–40°C to +85°C).

Technical Context

The IDT7024L35PF8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent read/write operations-even to the same memory location-via true dual-ported SRAM cells. Its on-chip arbitration logic resolves port contention using BUSY flag signaling and M/S select configuration.

It integrates full hardware semaphore support (8 flags addressed via A0–A2), interrupt flag generation (INTL/INTR), and separate upper-byte (UBR/UBL) and lower-byte (LBR/LBL) enables for multiplexed bus compatibility. The L-version delivers ultra-low standby power: 1 µA typical full-standby current under CMOS-level inputs and 2V data retention capability.

Key Specifications

Pinout & Package

Package: 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.15 in × 1.15 in × 0.17 in, lead finish SnPb, 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-35AXC and R1EX24032DGS-35, IDT7024L35PF8 uniquely combines industrial temperature rating, 2V data retention, on-chip semaphores, and PLCC packaging - making it optimal for ruggedized, battery-backed dual-processor systems where reliability and minimal BOM count are critical.

Availability

IDT7024L35PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial PLC memory expansion, and redundant control system buffering requiring stable component supply across extended temperature and long-life programs.

Supply support for IDT7024L35PF8 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 signal processing solutions, now part of Renesas Electronics.

IDT7024L35PF8 belongs to the IDT7024 family of high-speed dual-port SRAMs designed specifically for deterministic, low-latency inter-processor communication in industrial, military, and telecom infrastructure equipment.

FAQ

What is the maximum operating speed of the IDT7024L35PF8?

The IDT7024L35PF8 has a guaranteed maximum read cycle time (tRC) of 35 ns, supporting sustained operation up to 28.6 MHz. Its address access time (tAA) is also rated at 35 ns max, ensuring deterministic timing for real-time systems. This speed applies across the full industrial temperature range (–40°C to +85°C) with 5.0 V ±10% supply.

Does the IDT7024L35PF8 support battery backup operation?

Yes, the IDT7024L35PF8 supports battery backup operation with guaranteed data retention down to 2.0 V (VDR). In data retention mode, it draws only 100 µA typical (up to 4 mA max) when CE is high and inputs are held at valid logic levels - enabling multi-year operation from a small coin-cell battery.

How does the Master/Slave (M/S) pin function in the IDT7024L35PF8?

When M/S = HIGH, the IDT7024L35PF8 operates as a Master: BUSYL/BUSYR become outputs that assert during port contention. When M/S = LOW, it operates as a Slave: BUSYL/BUSYR become inputs that must be driven by a Master device to gate writes. This enables seamless cascading of multiple IDT7024L35PF8 devices for wider data buses without external logic.

What is the purpose of the semaphore feature in the IDT7024L35PF8?

The IDT7024L35PF8 integrates eight hardware semaphore flags accessible via A0–A2 and controlled by SEML/SEMR. These enable atomic test-and-set operations between ports, allowing safe resource sharing (e.g., shared peripherals or memory regions) without software locks or polling - reducing latency and eliminating race conditions in dual-processor systems.

Which package type is used by the IDT7024L35PF8?

The IDT7024L35PF8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, designated as "PF8" in the part number. Its body dimensions are approximately 1.15 in × 1.15 in × 0.17 in, with gull-wing leads compatible with standard surface-mount reflow processes and socket-based prototyping.