Renesas 7025S25PFI

Overview

IDT7025S25PFI from Integrated Device Technology (IDT) is a high-speed 8K × 16-bit true dual-port static RAM with 25 ns maximum access time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It supports simultaneous independent read/write access on left and right ports, features on-chip semaphore logic and BUSY arbitration, and is used in real-time embedded systems requiring deterministic memory coherency - such as digital signal processors interfacing with FPGA-based peripherals.

For engineers reviewing the IDT7025S25PFI datasheet, IDT7025S25PFI pinout, IDT7025S25PFI application, or IDT7025S25PFI equivalent, key selection considerations include its 25 ns read cycle time, dual-port arbitration behavior under address contention, battery-backed data retention at 2V (L-version), and compatibility with master/slave cascading for 32-bit+ bus expansion.

Technical Context

The IDT7025S25PFI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves port conflicts via hardware BUSY flag generation (M/S = H) or BUSY input (M/S = L), and supports eight semaphore flags accessed via A0–A2 and I/O0–I/O15.

It uses CMOS high-performance fabrication for low active power (750 mW typ.) and includes separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility. The device operates across a single 5V ±10% supply and retains data down to 2V in standby mode.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (PNG100), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant green variant available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-25AXC and AS7C38098B-25JCIN, the IDT7025S25PFI uniquely delivers 5V-native operation, integrated BUSY arbitration, and 2V data retention - making it irreplaceable in legacy industrial and avionics systems requiring deterministic hardware coherency and battery backup.

Availability

IDT7025S25PFI is available at Aetrix Electronics and suitable for industrial motion control, avionics display systems, and redundant communication gateways requiring stable component supply across extended product lifecycles.

Supply support for IDT7025S25PFI 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

Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019.

The IDT7025S25PFI belongs to IDT's high-speed dual-port SRAM product line, designed specifically for real-time embedded systems demanding hardware-enforced memory coherency between heterogeneous processors or accelerators.

FAQ

What is the maximum operating temperature range for the IDT7025S25PFI?

The IDT7025S25PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including 25 ns access time, standby current, and BUSY arbitration timing - ensuring reliable performance in factory automation and outdoor embedded equipment without thermal derating.

Does the IDT7025S25PFI support battery backup operation?

Yes, the IDT7025S25PFI supports data retention at 2V supply voltage, enabling direct connection to a backup battery during main power loss. This feature is inherent to the "L" version design (though the "S" suffix here denotes speed grade); the 2V retention is guaranteed across the full industrial temperature range and requires no external circuitry.

How does the M/S pin configure master/slave operation in the IDT7025S25PFI?

When M/S = H, the IDT7025S25PFI operates as a Master: BUSYR becomes an output asserting contention status to a Slave device. When M/S = L, it operates as a Slave: BUSYL becomes an input accepting BUSY assertion from a Master. This pin enables hardware-cascaded dual-port configurations for 32-bit+ bus expansion without external logic.

Can both ports of the IDT7025S25PFI perform simultaneous reads to the same memory location?

Yes, the IDT7025S25PFI features true dual-ported memory cells that allow simultaneous reads - even to identical addresses - without conflict or timing penalty. This capability is fundamental to its architecture and is explicitly guaranteed in the datasheet, enabling lock-free data sharing between processors or functional blocks.

What package type is used for the IDT7025S25PFI?

The IDT7025S25PFI is supplied in a 100-pin Thin Quad Flatpack (TQFP) package, designated PNG100. Its 14 mm × 14 mm footprint with 0.5 mm lead pitch supports high-density PCB layouts and is compatible with standard reflow soldering processes used in industrial electronics manufacturing.