Renesas 7024L35JI/2703

Overview

IDT7024L35JI/2703 from Integrated Device Technology (IDT) 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 industrial temperature range (–40°C to +85°C). It supports simultaneous asynchronous access, on-chip semaphore arbitration, and battery-backed data retention down to 2V - enabling use in real-time inter-processor communication systems such as radar signal processors and avionics data buffers.

For engineers reviewing the IDT7024L35JI/2703 datasheet, IDT7024L35JI/2703 pinout, IDT7024L35JI/2703 application, or IDT7024L35JI/2703 equivalent, key selection criteria include dual-port arbitration timing (tBDD ≤ 35 ns), low standby current (ISB3 = 0.2 mA typ.), 100-pin TQFP package compatibility, and support for master/slave cascading in 32-bit memory expansion.

Technical Context

The IDT7024L35JI/2703 implements full hardware port arbitration using dedicated BUSY flag signaling and semaphore logic, allowing conflict-free concurrent access to shared memory locations. Its dual independent address/data/control buses enable fully asynchronous reads/writes from either port without external logic.

It features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility, and supports both RAM mode (SEM = VIH) and semaphore register mode (SEM = VIL) via dedicated control pins. The device uses CMOS technology with active power consumption of 150 mA (typ.) and full standby current as low as 0.2 mA at CMOS-level inputs.

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-35JC and IDT7025L35JG, the IDT7024L35JI/2703 uniquely delivers integrated semaphore registers and industrial-temperature-rated 100-pin TQFP packaging in a 4K × 16 configuration - making it optimal for space-constrained, arbitration-intensive embedded systems where external logic reduction is critical.

Availability

IDT7024L35JI/2703 is available at Aetrix Electronics and suitable for real-time signal processing, avionics data buffering, and industrial PLC communication hubs requiring stable component supply across extended product lifecycles.

Supply support for IDT7024L35JI/2703 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

Integrated Device Technology (IDT) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.

IDT7024L35JI/2703 belongs to the IDT7024 family of high-speed dual-port SRAMs designed specifically for deterministic inter-processor communication in safety-critical and real-time embedded systems.

FAQ

What is the maximum operating frequency supported by the IDT7024L35JI/2703?

The IDT7024L35JI/2703 supports a maximum read cycle time (tRC) of 35 ns, corresponding to an effective maximum operating frequency of approximately 28.6 MHz for continuous sequential access. This rating applies across the full industrial temperature range (–40°C to +85°C) and is guaranteed under VCC = 5.0 V ±10%. The IDT7024L35JI/2703 does not specify a clock input; timing is fully asynchronous and governed by control signal setup/hold relationships.

Does the IDT7024L35JI/2703 support battery backup operation, and what voltage is required?

Yes, the IDT7024L35JI/2703 supports battery backup operation with data retention down to 2.0 V (VDR = 2.0 V min.). In data retention mode, CE must be held high (CE > VHC), and all inputs biased to valid logic levels (VIN > VHC or < VLC). The IDT7024L35JI/2703 draws only 100 µA typical (up to 4000 µA max) under these conditions, enabling multi-year retention on small coin-cell batteries.

How does the Master/Slave (M/S) pin affect BUSY flag behavior on the IDT7024L35JI/2703?

When M/S = H, BUSYL/BUSYR operate as open-drain push-pull outputs indicating local port contention; when M/S = L, BUSYL/BUSYR become inputs accepting BUSY signals from a master device. This enables hierarchical arbitration in cascaded configurations. The IDT7024L35JI/2703's tBDD parameter (≤35 ns) ensures deterministic resolution regardless of M/S configuration.

Can the IDT7024L35JI/2703 perform simultaneous reads from both ports to the same memory address?

Yes, the IDT7024L35JI/2703 uses true dual-port memory cells that permit fully simultaneous, independent reads from both left and right ports to identical addresses without contention, delay, or data corruption. This capability is intrinsic to its cell architecture and requires no arbitration - unlike write operations, which trigger BUSY assertion and require resolution.

What is the purpose of the SEM pins on the IDT7024L35JI/2703, and how are they used?

The SEML and SEMR pins configure each port to access either the main 4K × 16 RAM array (SEM = VIH) or an internal 3-bit semaphore register file (SEM = VIL). Semaphore addresses are selected via A0–A2, and semaphore data appears on all 16 I/O lines. This eliminates need for external semaphores or software-managed flags - a core feature of the IDT7024L35JI/2703.