Renesas 7007S25PF

Overview

IDT7007S25PF from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right port access, 25 ns maximum read cycle time (tRC), TTL-compatible 5 V ±10% operation, and integrated on-chip semaphore and interrupt logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the IDT7007S25PF datasheet, IDT7007S25PF pinout, IDT7007S25PF application, or IDT7007S25PF equivalent, this device supports simultaneous asynchronous reads/writes across ports, hardware arbitration via BUSY flag, master/slave cascading for 16-bit+ bus expansion, and industrial temperature operation (–40°C to +85°C) in 80-pin TQFP packaging.

Technical Context

The IDT7007S25PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling concurrent memory access without external logic. Its on-chip arbitration logic uses push-pull BUSY outputs (not open-drain) and supports both CE-controlled and address-match–based contention resolution.

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 addresses (7FFE_H/7FFF_H). Power management includes four standby current modes (ISB1–ISB4), with full CMOS-level standby drawing as low as 0.2 mA.

Key Specifications

Pinout & Package

Package: 80-pin thin quad flatpack (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-25AXC and R1EX24032AS0C-25, the IDT7007S25PF delivers integrated hardware arbitration, industrial temperature resilience, and seamless bus-width scalability - reducing BOM count and firmware development effort in mission-critical dual-CPU systems.

Availability

IDT7007S25PF is available at Aetrix Electronics and suitable for industrial PLC communication modules, avionics data concentrators, and medical imaging frame buffers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for IDT7007S25PF 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 real-time embedded systems requiring deterministic inter-processor communication - emphasizing hardware-accelerated arbitration, low-latency memory access, and robust industrial temperature operation.

FAQ

What is the maximum operating temperature range supported by the IDT7007S25PF?

The IDT7007S25PF is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended DC Operating Conditions" table (Table 05) and applies to all speed grades including the 25 ns version. It does not support military-grade (–55°C to +125°C) operation.

Does the IDT7007S25PF support true simultaneous read operations from both ports to the same memory address?

Yes, the IDT7007S25PF features true dual-ported memory cells that permit simultaneous reads of the same memory location from left and right ports without contention or delay. This is explicitly stated in the "Features" section and verified in Truth Table I under non-contention conditions.

How does the BUSY arbitration logic function when the IDT7007S25PF is configured as a slave (M/S = L)?

When M/S = L, BUSYL and BUSYR become inputs. A LOW level on either BUSY input inhibits writes to the corresponding port - e.g., BUSYL = L blocks writes on the left port regardless of R/WL or CEL state. This behavior is defined in Note 1 of the Pin Names table and Truth Table IV.

Can the IDT7007S25PF be used without connecting the M/S pin if only a single device is deployed?

Yes - the M/S pin may be tied HIGH (for master mode) or LOW (for slave mode) permanently. In single-device configurations, tying M/S = H configures BUSYL/BUSYR as outputs, enabling local arbitration monitoring; tying M/S = L disables BUSY output functionality but retains interrupt and semaphore features.

What is the minimum pulse width required for reliable semaphore flag writes on the IDT7007S25PF?

The minimum semaphore write pulse width (tSOP) is 12 ns for the IDT7007S25PF, as specified in Table 12a under "Semaphore Flag Update Pulse (OE or SEM)". This timing must be met when SEM = VIL and CE = VIH to ensure correct flag latching across process/voltage/temperature corners.