Renesas 7007S25PFI

Overview

IDT7007S25PFI from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 25 ns maximum access time, industrial temperature range (–40°C to +85°C), and full on-chip semaphore and interrupt logic - used in real-time inter-processor communication systems such as motor control co-processors and redundant PLC modules.

For engineers reviewing the IDT7007S25PFI datasheet, IDT7007S25PFI pinout, IDT7007S25PFI application, or IDT7007S25PFI equivalent, key selection considerations include BUSY arbitration timing (tBDD ≤ 30 ns), dual-port power-down current (ISB3 = 0.2 mA typ.), 80-pin TQFP package compatibility, and master/slave M/S pin configuration for system-level port coordination.

Technical Context

The IDT7007S25PFI implements fully asynchronous dual-port operation with separate address, data, and control buses per port, enabling simultaneous read/write access to any memory location without external arbitration logic. Its on-chip arbitration logic resolves contention via BUSY flag assertion based on address match or chip enable timing, with tAPS = 5 ns priority setup time.

It supports two distinct memory access modes: RAM mode (CE = VIL, SEM = VIH) and semaphore mode (CE = VIH, SEM = VIL), with dedicated I/O0–I/O7 pins serving both data and semaphore flag I/O. The M/S pin configures BUSYL/BUSYR as output (master) or input (slave), enabling scalable multi-device 16-bit+ memory expansion.

Key Specifications

Pinout & Package

Package: 80-pin Thin Quad Flat Pack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-25AC and R1EX24032AS0C-25, the IDT7007S25PFI uniquely integrates BUSY arbitration, semaphore registers, and interrupt mailboxes in a single 5 V device - reducing BOM count and PCB area while enabling faster time-to-market for real-time inter-processor communication.

Availability

IDT7007S25PFI is available at Aetrix Electronics and suitable for motor control co-processors, redundant PLC modules, and industrial Ethernet gateways requiring stable component supply across extended industrial temperature ranges and long production lifecycles.

Supply support for IDT7007S25PFI 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, RF, and sensor signal conditioning ICs, acquired by Renesas Electronics in 2019.

The IDT7007 family was designed specifically for deterministic, low-latency inter-processor communication in industrial automation, motion control, and telecom infrastructure - emphasizing hardware arbitration, mailbox interrupts, and seamless 16-bit+ bus expansion.

FAQ

What is the operating temperature range for the IDT7007S25PFI?

The IDT7007S25PFI is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and qualified for use in programmable logic controllers, motor drives, and factory automation equipment where ambient thermal stress is significant. This range is explicitly confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the official datasheet.

Does the IDT7007S25PFI support true simultaneous read operations on both ports?

Yes, the IDT7007S25PFI supports true simultaneous reads on both left and right ports - including reads from the same memory location - without BUSY assertion or arbitration delay. This behavior is guaranteed by its true dual-port SRAM cell architecture and is explicitly documented in the Features section and Truth Table I of the datasheet.

How does the M/S pin affect BUSY signal behavior in the IDT7007S25PFI?

In the IDT7007S25PFI, the M/S pin configures BUSYL and BUSYR as outputs when M/S = HIGH (master mode), enabling automatic contention detection and blocking of conflicting writes. When M/S = LOW (slave mode), BUSYL and BUSYR become inputs, allowing external arbitration - a feature critical for cascading multiple IDT7007S25PFI devices into wider data buses. This dual-mode operation is defined in Pin Names and Truth Table IV.

What are the valid semaphore access conditions for the IDT7007S25PFI?

Semaphore access in the IDT7007S25PFI requires CE = VIH and SEM = VIL (per Truth Table II), with semaphore flags addressed via A0–A2 and data transferred on I/O0–I/O7. Eight independent flags are supported, and the timing parameters tSOP = 12 ns and tSAA = 25 ns max are specified for this mode - distinct from RAM access timing which uses CE = VIL and SEM = VIH.

Is the IDT7007S25PFI pin-compatible with other speed grades in the IDT7007 family?

Yes, the IDT7007S25PFI shares identical 80-pin TQFP pinout and signal mapping with other speed variants (e.g., IDT7007S15PFI, IDT7007S20PFI), as confirmed by the Pin Configurations section and consistent pin naming across all AC Electrical Characteristics tables. This allows direct speed-grade substitution without PCB layout changes.