Renesas 70V24L15PFGI

Overview

70V24L15PFGI from Integrated Device Technology (IDT) is an industrial-grade, 4K x 16-bit true dual-port static RAM with independent left/right asynchronous ports, 15 ns read cycle time, 3.3 V single-supply operation, and on-chip semaphore arbitration - used in real-time inter-processor communication systems requiring deterministic memory access without external logic.

For engineers reviewing the 70V24L15PFGI datasheet, 70V24L15PFGI pinout, 70V24L15PFGI application, or 70V24L15PFGI equivalent, key selection criteria include its 84-pin PLCC package, -40°C to +85°C temperature rating, BUSY/INT flag support for port contention management, and low standby current of 660 µA (typ.) enabling power-sensitive embedded control designs.

Technical Context

This device implements fully asynchronous dual-port architecture with separate address, data, and control buses per port, enabling simultaneous read/write operations to the same memory location without collision. It integrates hardware semaphore logic (8 flags, addressed via A0–A2) and automatic port arbitration using MASTER/SLAVE select (M/S pin) to coordinate multi-device 32-bit+ memory expansion.

Operation relies on TTL-compatible 3.3 V I/O with LVTTL thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), full on-chip power-down via CE-driven standby modes, and non-tri-stated push-pull BUSY/INT outputs - all validated for industrial ambient conditions (-40°C to +85°C) and qualified per IDT's green-part standards.

Key Specifications

Pinout & Package

70V24L15PFGI is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC, package code PLG84), body size ≈ 1.15 in × 1.15 in × 0.17 in, with gull-wing leads suitable for through-hole reflow or wave soldering. All VDD pins require local 3.3 V decoupling; all VSS pins must connect to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and IDT70V25L15PF, the 70V24L15PFGI uniquely delivers industrial-qualified 84-pin PLCC packaging, hardware BUSY/INT signaling, and seamless MASTER/SLAVE cascading - making it optimal for legacy-replacement and mechanically constrained embedded control designs.

Availability

70V24L15PFGI is available at Aetrix Electronics and suitable for motor control systems, industrial PLC backplanes, and telecom line cards requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature compliance.

Supply support for 70V24L15PFGI 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 sensor signal conditioning ICs for communications, computing, and industrial markets.

The IDT70V24 product line delivers high-speed, low-power dual-port SRAMs optimized for deterministic inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, industrial reliability, and minimal external component count.

FAQ

What is the maximum operating temperature range for the 70V24L15PFGI?

The 70V24L15PFGI is rated for industrial operation from -40°C to +85°C ambient temperature. This specification is validated per IDT's qualification standards and applies across all electrical parameters including access time, standby current, and I/O voltage thresholds - making it suitable for deployment in harsh environments such as factory automation controllers and outdoor telecom equipment.

Does the 70V24L15PFGI support true simultaneous read/write to the same memory address?

Yes, the 70V24L15PFGI implements true dual-port SRAM cells that allow concurrent read and write operations to the identical memory location from left and right ports. This capability is intrinsic to the cell architecture and requires no external arbitration - enabling deterministic behavior in tightly coupled dual-processor systems where data coherency must be maintained without software intervention.

How does the BUSY flag function in master/slave configurations with the 70V24L15PFGI?

In master/slave mode, the 70V24L15PFGI uses the M/S pin to configure BUSY behavior: when M/S = VIH, BUSY is an output indicating port contention; when M/S = VIL, BUSY is an input accepting contention signals from the master. This hardware-level signaling eliminates the need for polling or software arbitration, reducing inter-processor latency in cascaded memory systems.

What is the standby current consumption of the 70V24L15PFGI under full CMOS-level disable?

The 70V24L15PFGI draws 660 µA (typical) in full standby mode (ISB3), achieved when both CEL and CER are held above VDD − 0.2 V, all inputs are at valid CMOS levels, and SEMR/SEML are high. This ultra-low quiescent current supports energy-efficient operation in battery-backed or thermally constrained applications such as portable diagnostic instruments and remote sensor nodes.

Is the 70V24L15PFGI pin-compatible with other members of the IDT70V24 family?

The 70V24L15PFGI shares the same 84-pin PLCC (PLG84) package and pinout with all IDT70V24 variants including 70V24S15PFGI and 70V24L25PFGI. Differences are limited to speed grade (15 ns vs. 25 ns) and power class (L = low-power), meaning PCB layout and firmware remain identical - only timing constraints and power budgeting require adjustment when substituting within the same speed bin.