Renesas 70V06L25PFI

Overview

70V06L25PFI from IDT is a high-speed 3.3V 16K × 8 dual-port static RAM with true independent left/right ports, 25 ns max read cycle time, industrial temperature range (–40°C to +85°C), and full on-chip semaphore and interrupt logic - used in real-time interprocessor communication systems requiring concurrent memory access without arbitration overhead.

For engineers reviewing the 70V06L25PFI datasheet, 70V06L25PFI pinout, 70V06L25PFI application, or 70V06L25PFI equivalent, key selection criteria include BUSY/INT flag timing, M/S master/slave configuration support, 3.3V-only operation, PLCC-68 package compatibility, and dual-port contention resolution behavior under simultaneous address access.

Technical Context

The 70V06L25PFI implements fully asynchronous dual-port architecture with separate address, data, and control buses per port. Its on-chip arbitration logic resolves port-to-port contention via push-pull BUSY flags and supports both address-match and chip-enable arbitration modes with tAPS = 5 ns priority setup time.

It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) accessible via CE = VIH/SEM = VIL, and interrupt mailbox logic using fixed addresses 3FFE_H (INTL) and 3FFF_H (INTR), enabling deterministic inter-processor signaling without external logic.

Key Specifications

Pinout & Package

68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 24.1 mm × 24.1 mm × 4.3 mm, lead pitch 1.27 mm. Pin 1 marked by index notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-25AXC and IDT70V25L25PF, the 70V06L25PFI offers optimal balance of integrated arbitration features, industrial temperature support, and PLCC-68 footprint - making it preferred for cost-sensitive, space-constrained dual-CPU designs where semaphore/BUSY logic must be self-contained.

Availability

70V06L25PFI is available at Aetrix Electronics and suitable for industrial PLCs, avionics data concentrators, and medical imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for 70V06L25PFI 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, now part of Renesas Electronics since 2019.

The 70V06L25PFI belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic interprocessor communication in real-time embedded systems where software-managed synchronization introduces unacceptable latency.

FAQ

What is the maximum operating frequency supported by the 70V06L25PFI?

The 70V06L25PFI does not specify a maximum clock frequency because it is an asynchronous SRAM. Its performance is defined by timing parameters: 25 ns maximum read cycle time (tRC), 25 ns address access time (tAA), and 25 ns chip enable access time (tACE). System-level throughput depends on control signal sequencing, not a clock domain.

Does the 70V06L25PFI support 5V-tolerant I/O?

No, the 70V06L25PFI is strictly a 3.3V device. All inputs require VIH ≥ 2.0 V and VIL ≤ 0.8 V referenced to VDD = 3.3 V ± 0.3 V. It is not 5V-tolerant, and applying 5V signals will exceed absolute maximum ratings and may cause permanent damage.

How does the M/S pin affect BUSY signal behavior in the 70V06L25PFI?

When M/S = VIH, BUSYL and BUSYR are push-pull outputs indicating local port contention. When M/S = VIL, they become inputs accepting BUSY signals from a master device - enabling hierarchical arbitration in multi-chip configurations. The 70V06L25PFI must be configured consistently across cascaded devices.

Can the 70V06L25PFI retain data during power loss?

Yes, the 70V06L25PFI supports battery backup operation with 2V data retention voltage. When VDD drops below 2.0 V but remains ≥ 2.0 V, the device maintains stored data with ISB3 ≤ 0.2 µA typical current draw - enabling seamless transition to backup power in mission-critical systems.

What addresses are used for interrupt mailbox functionality in the 70V06L25PFI?

The 70V06L25PFI uses fixed addresses 3FFE_H (hexadecimal) to set the left port interrupt flag (INTL) and 3FFF_H to set the right port interrupt flag (INTR). Reading those addresses clears the respective flags. These locations function as mailboxes only when interrupt logic is enabled; otherwise, they behave as standard memory locations.