Renesas 7007S25PF8

Overview

7007S25PF8 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, TTL-compatible 5 V ±10% supply, and integrated hardware semaphore and interrupt logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the 7007S25PF8 datasheet, 7007S25PF8 pinout, 7007S25PF8 application, or 7007S25PF8 equivalent, this page delivers verified timing specs, master/slave arbitration behavior, BUSY/INT signal timing, semiconductor-grade standby current values, and confirmed TQFP-80 package compatibility - all validated against IDT's official DSC 2940/16 datasheet (September 2019).

Technical Context

The 7007S25PF8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling simultaneous read/write access to the same memory location without contention. Its on-chip arbitration logic resolves port conflicts via BUSY flag assertion and supports both CE-controlled and address-match-based arbitration modes.

It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) accessible via SEM = VIL, and interrupt flags (INTL/INTR) triggered by writes to fixed mailbox addresses (7FFE_H/7FFF_H). The M/S pin configures master (BUSY output) or slave (BUSY input) mode for cascaded 16-bit+ memory expansion.

Key Specifications

Pinout & Package

7007S25PF8 is packaged in an 80-pin thin quad flatpack (TQFP, package code PNG80), measuring 14 mm × 14 mm × 1.4 mm, with all V_CC and GND pins distributed across the perimeter for optimal power integrity and noise immunity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-25AXC and IDT70V27L25PF, the 7007S25PF8 uniquely combines 5 V TTL compatibility, hardware semaphore/INT logic, and M/S-configurable cascading - making it the only drop-in solution for industrial 5 V dual-CPU architectures requiring zero-additional-logic memory sharing.

Availability

7007S25PF8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics control units, medical imaging subsystems, and telecom baseband modules requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 7007S25PF8 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 high-performance timing, memory interface, and RF solutions, now part of Renesas Electronics since 2019.

The IDT7007 family was designed specifically for real-time inter-processor communication in embedded systems requiring deterministic memory access, hardware arbitration, and minimal external logic - targeting industrial automation, aerospace, and medical equipment markets.

FAQ

What is the maximum operating temperature range for the 7007S25PF8?

The 7007S25PF8 is rated for industrial temperature operation from –40°C to +85°C, as confirmed in IDT's DSC 2940/16 datasheet (Table 5). This specification applies to all speed grades including the 25 ns version, and is validated across DC and AC electrical parameters under 5.0 V ±10% supply conditions.

Does the 7007S25PF8 support true simultaneous read operations from both ports to the same memory address?

Yes, the 7007S25PF8 supports true simultaneous reads from both ports to the same memory location, as explicitly stated in the "Features" section of the datasheet: "True Dual-Ported memory cells which allow simultaneous reads of the same memory location." No BUSY assertion or arbitration delay occurs during concurrent reads.

How does the M/S pin affect BUSY signal behavior in the 7007S25PF8?

When M/S = HIGH, the 7007S25PF8 operates as a master: BUSYL and BUSYR are push-pull outputs that assert LOW to block writes during port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs that must be driven LOW by a master device to inhibit local writes - per Note 1 in the Pin Names table (DSC 2940/16, p.4).

What are the valid mailbox addresses for interrupt generation in the 7007S25PF8?

The 7007S25PF8 uses fixed hexadecimal addresses 7FFE_H (for asserting INTL) and 7FFF_H (for asserting INTR), as defined in Truth Table III (p.16) and Functional Description (p.17). Writing to 7FFF_H from the left port asserts INTR; reading 7FFF_H from the right port clears it. These addresses function as user-defined mailboxes within the main SRAM array.

Is the 7007S25PF8 pin-compatible with other members of the IDT7007 family, such as the 7007L variant?

Yes, the 7007S25PF8 shares identical pinout and package (80-pin TQFP, PNG80) with all IDT7007 variants including 7007L, as confirmed in Pin Configurations (p.3–4, DSC 2940/16). Differences are limited to speed grade (25 ns vs. 15/20 ns), power rating (S vs. L), and temperature screening - all electrically and mechanically interchangeable in the same footprint.