Renesas 70V06S25PFI8

Overview

70V06S25PFI8 from IDT (Integrated Device Technology) is a high-speed 3.3V 16K × 8 dual-port static RAM with true independent left/right ports, 25 ns maximum read cycle time, industrial temperature range (−40°C to +85°C), and integrated semaphore and interrupt logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the 70V06S25PFI8 datasheet, 70V06S25PFI8 pinout, 70V06S25PFI8 application, or 70V06S25PFI8 equivalent, key selection criteria include port arbitration timing (tAPS = 5 ns), BUSY flag response (tBAA ≤ 20 ns), low-power standby current (ISB3 = 0.2 mA typ.), and 68-pin PLCC packaging compatibility with legacy board layouts.

Technical Context

The 70V06S25PFI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling simultaneous read/write access to any memory location without contention-induced data corruption. Its on-chip arbitration logic resolves port conflicts via hardware BUSY signaling and master/slave configuration (M/S pin).

It supports three concurrent functional modes: standard SRAM access (CE = VIL, SEM = VIH), semaphore flag operations (CE = VIH, SEM = VIL), and interrupt mailbox handling (INTL/INTR assertion at fixed addresses 3FFEh/3FFFh). All modes operate under single 3.3V ±0.3V supply with TTL-compatible logic levels.

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; all VDD pins require local decoupling; all VSS pins must be connected to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-25AXC and AS7C316000B-25JIN, the 70V06S25PFI8 delivers unique value through integrated hardware semaphore and interrupt logic-reducing BOM count, eliminating arbitration firmware overhead, and guaranteeing sub-20 ns conflict resolution in safety-critical dual-CPU systems.

Availability

70V06S25PFI8 is available at Aetrix Electronics and suitable for industrial PLC communication bridges, real-time motor control co-processors, avionics data concentrators, and medical imaging signal pipelines requiring stable component supply across extended product lifecycles.

Supply support for 70V06S25PFI8 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), now part of Renesas Electronics, is a semiconductor company specializing in timing, memory interface, and high-performance data movement solutions for communications, computing, and industrial markets.

The IDT70V06 family was designed specifically for deterministic inter-processor communication in real-time embedded systems-delivering hardware-accelerated arbitration, semaphore, and interrupt capabilities within a single dual-port SRAM die.

FAQ

What is the operating temperature range for the 70V06S25PFI8?

The 70V06S25PFI8 is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the DC Operating Conditions table (Table 5) and applies to all AC timing parameters including tRC = 25 ns max, tAA ≤ 25 ns, and BUSY arbitration timing. The device uses standard CMOS process technology qualified for extended thermal cycling in harsh environments.

Does the 70V06S25PFI8 support battery backup operation?

Yes, the 70V06S25PFI8 supports battery backup operation with 2V minimum VDD for data retention. This is explicitly stated in the Features section and verified in the Absolute Maximum Ratings table (Table 4), where VTERM minimum is −0.5V and operational VDD range includes 2.0V–3.6V. Data remains valid during brown-out conditions as long as VDD stays ≥2V.

How does the M/S pin affect BUSY signal behavior on the 70V06S25PFI8?

When M/S = VIH, the 70V06S25PFI8 operates as a master: BUSYL and BUSYR are push-pull outputs that assert low during port contention to inhibit writes. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs that must be driven externally to control write enable on the opposite port. This dual-mode configuration enables flexible system-level arbitration topologies.

What are the valid semaphore address ranges for the 70V06S25PFI8?

The 70V06S25PFI8 implements eight semaphore flags addressed by A0–A2 (binary 000 to 111), corresponding to physical addresses 0–7 within the semaphore register space. Access requires CE = VIH and SEM = VIL per Truth Table II. Each flag is written via I/O0 and read across I/O0–I/O7, enabling atomic resource locking without software intervention.

Can the 70V06S25PFI8 be used in a 16-bit data bus configuration?

Yes, the 70V06S25PFI8 supports 16-bit expansion using Master/Slave cascading. Two devices can be connected with M/S pins configured oppositely-one as master (BUSY outputs), one as slave (BUSY inputs)-to form a 16K × 16 memory without external logic. This capability is documented in the Features section and Functional Description, enabling full-speed error-free operation in wide-data-path systems.