Renesas 7005L25PF8

Overview

7005L25PF8 from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right port access, 25 ns maximum read cycle time (tRC), 1 mW typical standby power, and TTL-compatible 5 V ±10% operation - used in real-time inter-processor communication, video frame buffers, and military-grade avionics data exchange systems.

For engineers reviewing the 7005L25PF8 datasheet, 7005L25PF8 pinout, 7005L25PF8 application, or 7005L25PF8 equivalent, key selection criteria include simultaneous dual-port arbitration latency, BUSY/INT semaphore timing compliance, battery-backed 2 V data retention, and 64-pin TQFP package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The 7005L25PF8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port (A0L–A12L/I/O0L–I/O7L and A0R–A12R/I/O0R–I/O7R), enabling concurrent reads/writes to identical memory locations without contention. On-chip arbitration logic resolves port conflicts via BUSY flag assertion and M/S-selectable master/slave cascading.

It supports two distinct operational modes: RAM access (CE = LOW, SEM = HIGH) and semaphore register access (CE = HIGH, SEM = LOW), with dedicated INTL/INTR interrupt flags and SEML/SEMR-controlled 8-bit semaphore bank addressed by A0–A2. All timing parameters-including tBDD (BUSY disable to valid data) and tSWRD (SEM write-to-read)-are specified for 25 ns speed grade under industrial conditions.

Key Specifications

Pinout & Package

7005L25PF8 is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, thermally enhanced for industrial ambient operation. Pin functions are strictly segregated between left port (L-suffixed), right port (R-suffixed), and shared control signals.

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 7005L25PF8 uniquely delivers integrated hardware semaphore, master/slave cascading, and 2 V data retention in a 5 V industrial-grade 64-pin TQFP-making it irreplaceable in deterministic real-time embedded systems requiring guaranteed arbitration and power-fail resilience.

Availability

7005L25PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, avionics data exchange, and industrial motion controller memory requiring stable component supply across extended product lifecycles.

Supply support for 7005L25PF8 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, and interface solutions for communications, computing, and industrial markets.

The 7005L25PF8 belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor memory sharing in mission-critical embedded systems operating across military, industrial, and commercial temperature ranges.

FAQ

What is the guaranteed maximum access time for the 7005L25PF8 under industrial temperature conditions?

The 7005L25PF8 guarantees a maximum read cycle time (tRC) of 25 ns over the full industrial temperature range (−40°C to +85°C) with VCC = 5.0 V ±10%. This value is production-tested and applies to both left and right ports under worst-case voltage and temperature conditions, ensuring deterministic timing in real-time control loops.

Does the 7005L25PF8 support battery backup operation, and what is the minimum retention voltage?

Yes, the 7005L25PF8 supports battery backup operation with guaranteed data retention down to 2.0 V (VDR). In retention mode (CE > VHC, VIN > VHC or < VLC), it draws ≤4000 µA in military/industrial grades, enabling long-term memory hold using a single 2 V coin cell - a feature confirmed in datasheet Table 9 and Figure 5.

How does the M/S pin configure arbitration behavior between multiple 7005L25PF8 devices?

When M/S = HIGH, the 7005L25PF8 operates as a master: BUSYL and BUSYR become push-pull outputs asserting contention status. When M/S = LOW, it operates as a slave: BUSYL/BUSYR become inputs that inhibit writes when driven LOW by a master. This enables daisy-chained master/slave configurations without external logic.

Can the 7005L25PF8 perform simultaneous read operations on both ports to the same memory address?

Yes, the 7005L25PF8 uses true dual-port memory cells that allow concurrent reads from identical addresses on left and right ports with no timing penalty or BUSY assertion. This capability is explicitly stated in the Features section and verified in Truth Table I (non-contention mode), enabling lock-free data sharing in symmetric multiprocessing.

What are the pin-compatible package options for the 7005L25PF8, and is the 64-pin TQFP RoHS-compliant?

The 7005L25PF8 is offered exclusively in the 64-pin thin quad flatpack (TQFP, package code PNG64); it is not pin-compatible with the 68-pin PGA or PLCC variants of the IDT7005 family. Per IDT ordering information, the 7005L25PF8 is a green part compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3.