Renesas 70V27L25PF8

Overview

IDT70V27L25PF8 from Integrated Device Technology (IDT) is a high-speed, low-power 32K × 16 dual-port static RAM with true simultaneous access capability, 25 ns maximum read cycle time, 3.3 V ±0.3 V single-supply operation, and integrated hardware semaphore/arbiter logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the IDT70V27L25PF8 datasheet, IDT70V27L25PF8 pinout, IDT70V27L25PF8 application, or IDT70V27L25PF8 equivalent, key selection considerations include its 100-pin TQFP package, master/slave cascading support for 32-bit+ bus expansion, BUSY/INT flag timing at 25 ns speed grade, and ultra-low 660 µW standby power consumption in industrial temperature range (–40°C to +85°C).

Technical Context

The IDT70V27L25PF8 implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses - enabling concurrent read/write operations to the same memory location without contention. Its on-chip arbitration logic uses address-match and chip-enable priority detection to assert BUSY flags and prevent data corruption during port-to-port access conflicts.

It supports two distinct operational modes: RAM mode (CE = VIL, SEM = VIH) for standard memory access, and semaphore mode (CE = VIH, SEM = VIL) for eight shared synchronization flags addressed via A0–A2. The M/S pin configures master (BUSY output) or slave (BUSY input) behavior for system-level coordination in multi-CPU designs.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (PN100-1), body size 14 mm × 14 mm × 1.4 mm, lead finish SnPb (EOL as of June 2018).

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 IDT70V27L25PF8 delivers unique value through single-supply operation, on-chip semaphore arbitration, and industrial temperature qualification - reducing BOM count and enabling robust deployment in harsh environments.

Availability

IDT70V27L25PF8 is available at Aetrix Electronics and suitable for industrial PLC communication modules, avionics flight control interfaces, medical imaging data buffers, automotive ADAS sensor fusion hubs, and real-time motion control systems requiring stable component supply across extended product lifecycles.

Supply support for IDT70V27L25PF8 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 IDT70V27L25PF8 belongs to IDT's high-performance dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where latency, reliability, and power efficiency are critical.

FAQ

What is the operating voltage range for the IDT70V27L25PF8?

The IDT70V27L25PF8 operates from 3.0 V to 3.6 V, with nominal 3.3 V ±0.3 V supply specified. It is not compatible with 5 V or 2.5 V logic families without level-shifting, and all VDD pins must be connected to the same regulated 3.3 V source with proper decoupling per the layout guidelines in the datasheet.

How does the IDT70V27L25PF8 handle simultaneous access to the same memory address?

The IDT70V27L25PF8 uses on-chip arbitration logic to detect address matches between ports and asserts BUSY flags to block conflicting writes. When M/S = VIH (Master), BUSY outputs indicate contention; when M/S = VIL (Slave), BUSY inputs inhibit writes - ensuring deterministic resolution without data corruption.

Can the IDT70V27L25PF8 be used in a 32-bit data bus configuration?

Yes - the IDT70V27L25PF8 supports 32-bit+ bus expansion via MASTER/SLAVE cascading. Two devices can be configured with M/S = VIH (Master) and M/S = VIL (Slave), using BUSY handshaking and CE0/CE1 controls to coordinate access and maintain full-speed operation without external logic.

What is the significance of the 'L' suffix in IDT70V27L25PF8?

The 'L' denotes the low-power variant: IDT70V27L consumes 660 µW typical standby current (ISB3), versus 3.3 mW for the 'S' (standard) version. This makes IDT70V27L25PF8 optimal for battery-powered or thermally constrained industrial applications requiring extended quiescent operation.

Does the IDT70V27L25PF8 support hardware semaphore functionality?

Yes - the IDT70V27L25PF8 integrates eight hardware semaphore flags accessible via A0–A2 address lines in semaphore mode (CE = VIH, SEM = VIL). Each flag is written via I/O0 and read across all 16 I/O lines, enabling atomic resource locking across ports without CPU involvement.