Renesas 70V06S45PF

Overview

70V06S45PF from IDT (Integrated Device Technology) is a high-speed 3.3V 16K × 8 dual-port static RAM with true independent left/right ports, 45 ns read cycle time, TTL-compatible I/O, and on-chip semaphore/interrupt arbitration logic. It enables simultaneous asynchronous access to shared memory in real-time inter-processor communication systems.

For engineers reviewing the 70V06S45PF datasheet, 70V06S45PF pinout, 70V06S45PF application, or 70V06S45PF equivalent, this page delivers verified timing specs (tRC = 45 ns), power metrics (ISB3 = 0.2 mA full standby), package mapping (64-pin TQFP), and validated alternatives for dual-port SRAM migration in industrial control and embedded communications.

Technical Context

The 70V06S45PF implements fully asynchronous dual-port architecture with separate address, data, and control buses per port. Its hardware arbitration includes push-pull BUSY flag generation (M/S = VIH), interrupt mailbox at addresses 3FFE/3FFF, and eight dedicated semaphore registers accessed via A0–A2 with SEM control.

It supports master/slave cascading for 16-bit+ data width expansion using M/S pin logic, and features automatic power-down per port via CE-driven standby modes-ISB3 = 0.2 mA (CMOS-level inputs, VDD = 3.3 V, TA = +25°C).

Key Specifications

Pinout & Package

70V06S45PF is packaged in a 64-pin TQFP (PNG64) with exposed thermal pad. All VDD pins require connection to 3.3 V supply; all VSS pins must be grounded. Pin 1 is located at bottom-left corner (index mark adjacent to pin 1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-45AXC, 70V06S45PF offers direct 8-bit integration and lower active power; versus R1EX24064AS0C-45, it trades ultra-low standby for broader commercial qualification and established IDT ecosystem tooling support.

Availability

70V06S45PF is available at Aetrix Electronics and suitable for industrial PLC communication bridges, real-time DSP co-processor interfaces, medical imaging data pipelines, and avionics sensor fusion hubs requiring stable component supply and long-term obsolescence management.

Supply support for 70V06S45PF 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions before its acquisition by Renesas Electronics in 2019.

The 70V06S45PF belongs to IDT's legacy high-speed dual-port SRAM product line, engineered for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and low-latency memory access are critical.

FAQ

What is the maximum operating frequency supported by the 70V06S45PF?

The 70V06S45PF does not operate at a fixed clock frequency but supports asynchronous operation with a 45 ns read cycle time (tRC), enabling effective throughput up to 22.2 MHz per port. This timing is guaranteed across the commercial temperature range (0°C to +70°C) with VDD = 3.3 V ± 0.3 V. The device requires no external clock - address and control signals drive access directly.

Does the 70V06S45PF support battery backup operation?

Yes, the 70V06S45PF supports battery backup operation with 2 V data retention capability. When main VDD drops below 2 V, the device maintains stored data in memory as long as VDD remains ≥ 2 V and ambient temperature stays within specification limits. This feature enables seamless failover in systems requiring nonvolatile state preservation during power loss events.

How does the BUSY arbitration logic function in the 70V06S45PF?

The 70V06S45PF's BUSY logic asserts BUSYL or BUSYR when both ports attempt access to the same memory address. With M/S = VIH (master mode), BUSY is an output indicating contention; tAPS = 5 ns ensures priority resolution. Writes are internally inhibited on the losing port until BUSY deasserts. tBDD ≤ 30 ns defines the delay from BUSY deassertion to valid data availability - critical for deterministic system timing.

Can the 70V06S45PF be used in a master/slave configuration for 16-bit data width expansion?

Yes, the 70V06S45PF supports master/slave cascading using the M/S pin. When configured as master (M/S = VIH), BUSY is output; as slave (M/S = VIL), BUSY becomes input and inhibits writes. Multiple devices can be stacked to form 16-bit or wider memory systems without external glue logic - the IDT MASTER/SLAVE approach ensures full-speed error-free operation as confirmed in the functional description.

What are the key differences between the 70V06S45PF and the 70V06L variant?

The 70V06S45PF is the commercial-grade, 45 ns speed grade in 64-pin TQFP packaging, while 70V06L denotes the industrial-grade version (−40°C to +85°C) with slower timing (e.g., 70V06L25 = 25 ns). The 'S' suffix indicates commercial temperature rating and 'L' indicates industrial; '45' specifies tRC = 45 ns. Both share identical pinout, feature set, and electrical characteristics except for temperature range and guaranteed timing parameters.