Renesas 70V25L15PFI8

Overview

70V25L15PFI8 from Integrated Device Technology (IDT) is a high-speed 4K x 16 true dual-port static RAM with independent left/right asynchronous ports, 15 ns maximum access time, 3.3 V ±0.3 V single supply, and industrial temperature range (–40°C to +85°C). It supports simultaneous read/write operations, on-chip semaphore arbitration, and byte-selectable I/O for multiplexed bus compatibility in real-time inter-processor communication systems.

For engineers reviewing the 70V25L15PFI8 datasheet, 70V25L15PFI8 pinout, 70V25L15PFI8 application, or 70V25L15PFI8 equivalent, key selection criteria include dual-port timing symmetry, low-power standby (660 µW typ.), BUSY/INT flag signaling, master/slave cascading capability, and TQFP-100 packaging for space-constrained embedded control designs.

Technical Context

The 70V25L15PFI8 implements fully asynchronous dual-port architecture with separate address, control, and data buses per port-enabling concurrent, collision-free access to any memory location. Its on-chip arbitration logic resolves port contention via BUSY flag assertion and supports hardware semaphore signaling across eight shared flags using A0–A2 addressing.

It operates exclusively from a single 3.3 V supply with LVTTL-compatible I/O levels, features automatic power-down via CE-controlled standby mode, and delivers deterministic 15 ns read cycle timing (tRC, tAA, tACE, tABE) under commercial and industrial conditions-verified at VDD = 3.3 V ±0.3 V and TA = –40°C to +85°C.

Key Specifications

Pinout & Package

70V25L15PFI8 is housed in a 100-pin Thin Quad Flatpack (TQFP) package (PNG100), measuring 14 mm × 14 mm × 1.4 mm, with exposed pad not electrically connected. All VDD and VSS pins require proper decoupling per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and AS7C34096A-15TCN, the 70V25L15PFI8 uniquely integrates master/slave cascading, hardware semaphore registers, and 660 µW standby-making it optimal for tightly coupled, safety-critical dual-processor systems requiring deterministic latency and minimal external components.

Availability

70V25L15PFI8 is available at Aetrix Electronics and suitable for industrial PLC data exchange, telecom line card buffering, medical imaging subsystem sync, and avionics sensor fusion hub applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 70V25L15PFI8 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs for communications, computing, and industrial markets.

The IDT70V25 family was designed specifically for high-reliability, real-time dual-processor systems requiring deterministic memory access, hardware-based inter-core coordination, and industrial-grade thermal performance.

FAQ

What is the maximum operating temperature range for the 70V25L15PFI8?

The 70V25L15PFI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all electrical parameters including 15 ns access time, 660 µW standby current, and full functionality of BUSY/INT flags and semaphore logic-validated per IDT's DSC-5624/10 datasheet revision OCTOBER 2019.

Does the 70V25L15PFI8 support true simultaneous read operations from both ports to the same memory address?

Yes, the 70V25L15PFI8 implements true dual-ported memory cells that allow simultaneous reads from both left and right ports to the identical memory location without contention or delay. This behavior is inherent to its SRAM cell architecture and requires no arbitration-confirmed in the Functional Block Diagram and Features section of the IDT70V25/24 datasheet.

How does the M/S pin configure master versus slave operation in the 70V25L15PFI8?

When M/S = VIH, the 70V25L15PFI8 operates as a master device with BUSY asserted as an output flag; when M/S = VIL, it operates as a slave with BUSY configured as an input. This enables daisy-chained configurations for wider data buses-explicitly defined in Note 2 of the Pin Configurations section and Truth Table I of the datasheet.

What is the standby current specification for the 70V25L15PFI8, and under what conditions is it measured?

The 70V25L15PFI8 has a typical standby current of 660 µW (not mA), measured under ISB3 conditions: both ports disabled (CEL/CER > VDD – 0.2 V), all inputs at CMOS levels (VIN > VDD – 0.2 V or VIN < 0.2 V), f = 0, and SEMR/SEML > VDD – 0.2 V-per Table 09b in the official IDT datasheet DSC-5624/10.

Can the 70V25L15PFI8 be used in a single-port configuration, and how is that achieved?

Yes, the 70V25L15PFI8 can operate in single-port mode by tying one port's CE pin high (e.g., CER = VIH) while using only the other port's address, control, and data signals. The unused port enters full standby, drawing only 660 µW, and its I/Os tri-state automatically-verified in Truth Table I and AC Electrical Characteristics tables for 70V25X15 variants.