Renesas 7007S20PFI

Overview

IDT7007S20PFI from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 20 ns max access time (industrial grade), 5 V ±10% single supply, and on-chip semaphore/interrupt arbitration logic - used in real-time inter-processor communication systems such as industrial PLCs and telecom line cards.

For engineers reviewing the 7007S20PFI datasheet, 7007S20PFI pinout, 7007S20PFI application, or 7007S20PFI equivalent, key selection considerations include BUSY flag timing (tBDD ≤ 30 ns), master/slave M/S pin configuration, simultaneous read capability, TTL-compatible I/O levels, and industrial temperature support (–40°C to +85°C).

Technical Context

The 7007S20PFI implements fully asynchronous dual-port architecture with separate address, control, and data buses per port. It integrates hardware semaphore logic (8 flags, addressed via A0–A2), interrupt generation (INTL/INTR tied to fixed addresses 7FFEh/7FFFh), and automatic power-down per port via CE-driven standby mode.

Its arbitration uses push-pull BUSY outputs (not open-drain) and supports both CE-controlled and address-match-based contention resolution. The M/S pin configures port behavior: HIGH enables BUSY output (Master), LOW enables BUSY input (Slave), enabling scalable multi-device memory expansion without external logic.

Key Specifications

Pinout & Package

7007S20PFI is packaged in an 80-pin TQFP (PNG80), 14 mm × 14 mm × 1.4 mm body, lead-free and RoHS-compliant. All VCC pins require local decoupling; all GND 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-20AC and R1EX24032ASG-20, the 7007S20PFI delivers unique value through integrated BUSY arbitration, semaphore registers, and interrupt mailboxes - reducing BOM count, PCB area, and firmware development effort in tightly coupled multi-processor systems.

Availability

7007S20PFI is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and avionics applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 7007S20PFI 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, now part of Renesas Electronics since 2019.

The IDT7007 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, dual-port concurrency, and industrial-grade reliability.

FAQ

What is the maximum operating temperature range for the 7007S20PFI?

The 7007S20PFI is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and supported by DC/AC electrical characteristics tables across this full range. This makes it suitable for deployment in harsh environments such as factory floors, outdoor telecom cabinets, and vehicle-mounted control units where ambient thermal stress is significant.

Does the 7007S20PFI support simultaneous read operations from both ports to the same memory address?

Yes, the 7007S20PFI supports true simultaneous reads from both ports to the same memory location - a core feature enabled by its dual-port SRAM cell architecture. This capability is explicitly confirmed in the datasheet's "Features" section and functional block diagram, and requires no arbitration or BUSY assertion, ensuring zero-contention data access for monitoring or broadcast use cases.

How does the M/S pin affect BUSY signal behavior on the 7007S20PFI?

When M/S = HIGH, the 7007S20PFI operates as a Master: BUSYL and BUSYR are push-pull outputs that assert LOW to block conflicting writes. When M/S = LOW, it operates as a Slave: BUSYL and BUSYR become inputs, and external BUSY signals from a Master device inhibit local writes - enabling hierarchical arbitration in multi-chip configurations without additional logic.

What are the fixed memory addresses used for interrupt generation in the 7007S20PFI?

The 7007S20PFI uses fixed addresses 7FFEh (hex) to assert INTL and 7FFFh (hex) to assert INTR. A write to 7FFEh by the right port sets INTL; a write to 7FFFh by the left port sets INTR. Clearing is performed by reading those same addresses with OE active - behavior confirmed in Truth Table III and Functional Description sections of the official datasheet.

Is the 7007S20PFI pin-compatible with other speed grades in the IDT7007 family, such as 7007S15PFI or 7007S25PFI?

Yes, the 7007S20PFI is pin-compatible with other speed variants in the IDT7007SxxPFI series (e.g., 7007S15PFI, 7007S25PFI) within the same 80-pin TQFP package. All share identical pinout, voltage, and logic-level specifications - allowing drop-in replacement for timing margin tuning or qualification flexibility without PCB redesign.