Renesas 7007L25PF8

Overview

IDT7007L25PF8 from IDT (now Renesas) 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 5 V ±10% single-supply operation. It enables simultaneous asynchronous read/write access to the same memory location and is used in real-time inter-processor communication systems requiring deterministic arbitration.

For engineers reviewing the IDT7007L25PF8 datasheet, IDT7007L25PF8 pinout, IDT7007L25PF8 application, or IDT7007L25PF8 equivalent, key selection considerations include BUSY/INT flag timing, semaphore support for resource locking, Master/Slave cascading capability, and low-power standby modes under TTL-level control.

Technical Context

The IDT7007L25PF8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion with tBDD ≤ 30 ns (M/S = VIH) and supports priority-based write resolution using tAPS = 5 ns setup time.

It integrates full hardware semaphore signaling across both ports using A0–A2 addressing of eight shared flags, and provides interrupt generation via dedicated mailbox addresses (7FFE_H for INTL, 7FFF_H for INTR), with tINS/tINR ≤ 20 ns propagation delay.

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-25AC and R1EX24064ASAS0I#U0, the IDT7007L25PF8 delivers integrated arbitration, semaphore, and interrupt hardware in a compact 80-pin TQFP - reducing BOM count and PCB area while guaranteeing deterministic latency for real-time inter-processor communication.

Availability

IDT7007L25PF8 is available at Aetrix Electronics and suitable for industrial PLCs, motor drive controllers, avionics data acquisition systems, and digital signal co-processing platforms requiring stable component supply and long-term lifecycle support.

Supply support for IDT7007L25PF8 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

Renesas Electronics Corporation (formerly Integrated Device Technology) is a global semiconductor leader specializing in microcontrollers, analog, power management, and memory solutions for industrial, automotive, and communications markets.

The IDT7007L25PF8 belongs to Renesas' legacy dual-port SRAM product line, engineered specifically for deterministic real-time inter-processor communication in safety-critical embedded systems requiring hardware-enforced resource arbitration.

FAQ

What is the maximum operating temperature range for the IDT7007L25PF8?

The IDT7007L25PF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table and DC Operating Conditions section of the official datasheet, and applies to all speed grades including the 25 ns version. The device maintains full functionality-including 25 ns access time and BUSY arbitration timing-across this entire range.

Does the IDT7007L25PF8 support true simultaneous read operations from both ports to the same memory address?

Yes, the IDT7007L25PF8 supports true simultaneous reads from both ports to the same memory location. This capability is explicitly stated in the Features section ("True Dual-Ported memory cells which allow simultaneous reads of the same memory location") and is fundamental to its architecture. No BUSY flag assertion or arbitration delay occurs during concurrent reads, enabling lock-free data sharing.

How does the Master/Slave (M/S) pin affect BUSY signal behavior on the IDT7007L25PF8?

When M/S = H, the IDT7007L25PF8 operates as a Master: BUSYL and BUSYR are push-pull outputs that assert LOW during port contention to block writes. When M/S = L, it operates as a Slave: BUSYL and BUSYR become inputs that must be driven LOW by a Master to inhibit local writes. This configuration enables hierarchical arbitration in multi-device systems.

What are the valid address ranges for interrupt mailbox functionality in the IDT7007L25PF8?

The IDT7007L25PF8 uses fixed addresses for interrupt mailbox operation: writing to 7FFE_H (hex) with the right port asserts the left port's INTL flag, and writing to 7FFF_H with the left port asserts the right port's INTR flag. These addresses are reserved for interrupt signaling per Truth Table III and Functional Description; they remain accessible as regular SRAM if interrupts are unused.

Can the IDT7007L25PF8 be used in a 16-bit data bus configuration?

Yes, the IDT7007L25PF8 supports 16-bit or wider data bus expansion using the Master/Slave cascade method. By connecting multiple devices with M/S configured appropriately and tying their BUSY lines, the IDT7007L25PF8 enables full-speed, error-free wide-word operation without external logic-explicitly cited in the Features and Description sections as a core design capability.