Renesas 70V24L20JGI

Overview

IDT70V24L20JGI from Integrated Device Technology is a high-speed 4K x 16 dual-port static RAM with true independent left/right port access, 20 ns maximum read cycle time (tRC), 3.3 V single-supply operation, and industrial temperature range (–40°C to +85°C). It features on-chip semaphore logic, BUSY/INT flags, and master/slave cascading support for 32-bit+ memory expansion in real-time embedded control systems.

For engineers reviewing the IDT70V24L20JGI datasheet, IDT70V24L20JGI pinout, IDT70V24L20JGI application, or IDT70V24L20JGI equivalent, key selection criteria include dual-port arbitration timing, 84-pin PLCC package compatibility, low-power standby current (660 µA typ.), and industrial-grade reliability for deterministic inter-processor communication.

Technical Context

The IDT70V24L20JGI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling simultaneous read/write operations to the same memory location without contention. Its on-chip arbitration logic resolves port conflicts via BUSY flag signaling and supports semaphore-based synchronization across CPUs or DMA engines.

It uses CMOS process technology optimized for 3.3 V operation, with TTL-compatible inputs and push-pull outputs (non-tri-stated BUSY/INT). The device supports byte-selectable upper/lower data access (UBL/LBL) and includes dedicated M/S pin for master/slave configuration in cascaded systems.

Key Specifications

Pinout & Package

Package: 84-pin Plastic Leaded Chip Carrier (PLG84), body size ≈ 1.15 in × 1.15 in × 0.17 in, lead pitch 0.05 in, RoHS-compliant and green-part qualified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-20AXC and AS7C34096B-20JCIN, IDT70V24L20JGI delivers integrated hardware arbitration and cascade-ready BUSY signaling in the same 84-pin PLCC footprint - reducing BOM count and eliminating timing-critical software arbitration code.

Availability

IDT70V24L20JGI is available at Aetrix Electronics and suitable for real-time motion control, avionics display generation, railway signaling, industrial HMI, and dual-core DSP co-processing requiring stable component supply across extended product lifecycles.

Supply support for IDT70V24L20JGI 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance computing solutions.

IDT70V24L20JGI belongs to the IDT70V25/24 family of high-speed dual-port SRAMs designed specifically for deterministic inter-processor communication in industrial, aerospace, and telecom infrastructure equipment.

FAQ

What is the maximum operating frequency supported by IDT70V24L20JGI?

IDT70V24L20JGI supports a maximum read cycle time (tRC) of 20 ns, corresponding to a theoretical maximum operating frequency of 50 MHz. This timing is fully guaranteed over the industrial temperature range (–40°C to +85°C) and 3.3 V ± 0.3 V supply, making IDT70V24L20JGI suitable for high-throughput deterministic systems where consistent latency matters more than peak bandwidth.

Does IDT70V24L20JGI require external arbitration logic for dual-CPU systems?

No, IDT70V24L20JGI includes full on-chip hardware arbitration logic with BUSY flag signaling and semaphore support. When both ports attempt simultaneous access to the same address, the BUSY output asserts to stall the contending port - eliminating the need for external gates or CPLDs. This built-in arbitration is validated in the functional block diagram and truth tables of the official IDT datasheet for IDT70V24L20JGI.

Can IDT70V24L20JGI be used in a master/slave configuration with other IDT70V24 devices?

Yes, IDT70V24L20JGI supports native master/slave cascading via its M/S pin and BUSY signal routing. When configured as Master (M/S = VIH), it drives BUSYR as an output; as Slave (M/S = VIL), it accepts BUSYR as input. This allows multiple IDT70V24L20JGI devices to be chained for wider data buses (e.g., 32-bit) without external control logic - a capability explicitly documented in the IDT70V24L20JGI datasheet Feature list and Pin Configurations section.

What is the standby current consumption of IDT70V24L20JGI, and how is it achieved?

IDT70V24L20JGI achieves 660 µA typical standby current (ISB3) by disabling internal circuitry when both chip enables (CEL and CER) are held high and all inputs are at valid CMOS levels (VIN < 0.2 V or > VDD – 0.2 V). This full standby mode is distinct from TTL-level standby (ISB1 = 13 mA typ.) and is confirmed in Table 09b of the IDT70V24L20JGI datasheet - enabling energy-efficient operation in battery-backed or thermally constrained industrial systems.

Is the 84-pin PLCC package of IDT70V24L20JGI RoHS-compliant and lead-free?

Yes, IDT70V24L20JGI is a green-part qualified device per the IDT ordering information note in the datasheet. The PLG84 package is RoHS-compliant and lead-free, with JEDEC-standard marking and moisture sensitivity level (MSL) rating appropriate for standard surface-mount assembly processes - verified in the "Green parts available" statement and packaging notes of the IDT70V24L20JGI datasheet revision DSC-5624/10.