Renesas 70V05L15PFG

Overview

70V05L15PFG from IDT is a high-speed 3.3V 8K × 8 dual-port static RAM with true independent left/right ports, 15 ns maximum access time (commercial grade), 380 mW typical active power, and full on-chip semaphore and interrupt logic for real-time inter-processor communication in embedded control systems.

For engineers reviewing the 70V05L15PFG datasheet, 70V05L15PFG pinout, 70V05L15PFG application, or 70V05L15PFG equivalent, key selection criteria include simultaneous port arbitration timing, BUSY/INT flag behavior under contention, master/slave cascading capability, and industrial-grade TQFP packaging compatibility with legacy IDT70V05 designs.

Technical Context

The 70V05L15PFG implements fully asynchronous dual-port operation with separate address, data, and control buses per port, enabling concurrent read/write access to any memory location without external logic. Its on-chip arbitration logic resolves port conflicts via BUSY flag assertion or semaphore signaling based on M/S pin configuration.

It supports two distinct operational modes: as a standalone 64 Kbit dual-port SRAM, or as a master/slave pair for 16-bit+ data bus expansion - where the M/S pin configures BUSYL/BUSYR as output (master) or input (slave), enabling hardware-controlled bus sharing without glue logic.

Key Specifications

Pinout & Package

70V05L15PFG is housed in a 64-pin thin quad flatpack (TQFP, package code PNG64), with 48 I/O and control pins distributed across four sides, plus dedicated VDD (pins 2, 17, 33, 49) and VSS (pins 1, 16, 32, 48, 64) for low-noise power distribution.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and IDT70V25L15PF, the 70V05L15PFG offers optimal fit for space-constrained industrial controllers needing 8-bit dual-port memory in a compact, surface-mount TQFP - balancing density, speed, and board area efficiency without redesigning data path width or package layout.

Availability

70V05L15PFG is available at Aetrix Electronics and suitable for industrial PLCs, avionics data concentrators, and medical imaging systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant green material sourcing.

Supply support for 70V05L15PFG 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas in 2019. It pioneered high-performance dual-port SRAM architectures for real-time embedded systems.

The 70V05L15PFG belongs to IDT's 70V05 family of high-speed 3.3V dual-port SRAMs, designed specifically for deterministic inter-processor communication in safety-critical industrial, aerospace, and medical equipment where hardware-enforced memory coherency is mandatory.

FAQ

What is the maximum operating temperature range for the 70V05L15PFG?

The 70V05L15PFG is rated for industrial temperature operation from –40°C to +85°C, with all AC and DC specifications guaranteed across this full range at 3.3 V ± 0.3 V supply. This makes it suitable for deployment in harsh environments such as factory automation controllers and vehicle-mounted electronics where ambient thermal stress is significant.

Does the 70V05L15PFG support true simultaneous read operations on both ports?

Yes, the 70V05L15PFG features true dual-ported memory cells that allow simultaneous reads from the same or different addresses on left and right ports without contention or timing penalty. The BUSY flag remains inactive during concurrent reads, and data validity is governed solely by tAA and tOE timing parameters per port.

How does the M/S pin affect BUSY signal behavior in the 70V05L15PFG?

When M/S = VIH, the 70V05L15PFG operates as a master: BUSYL and BUSYR become push-pull outputs that assert low during port contention. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs used to inhibit writes when the master asserts BUSY, enabling hardware-controlled arbitration in cascaded configurations.

Can the 70V05L15PFG be used for semaphore-based resource locking between two microcontrollers?

Yes, the 70V05L15PFG includes full on-chip hardware semaphore logic with eight independent flags addressed via A0–A2. Each flag can be written by one port and read by either port, enabling atomic lock/unlock operations without software intervention - critical for deterministic real-time systems using the 70V05L15PFG as shared synchronization memory.

What is the standby current consumption of the 70V05L15PFG during powered-down operation?

The 70V05L15PFG draws 660 μW typical standby power (equivalent to ~200 μA at 3.3 V) when both CEL and CER are held high. This ultra-low quiescent draw is achieved through internal power-gating circuitry and supports energy-sensitive applications like battery-backed industrial monitors where the 70V05L15PFG maintains state during sleep cycles.