Renesas 70V06L55PF

Overview

70V06L55PF from IDT (Integrated Device Technology) is a high-speed 3.3V 16K × 8 dual-port static RAM with true independent left/right ports, 55 ns maximum read cycle time, industrial temperature range (–40°C to +85°C), and full on-chip semaphore and interrupt logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the 70V06L55PF datasheet, 70V06L55PF pinout, 70V06L55PF application, or 70V06L55PF equivalent, key selection criteria include port arbitration timing (tBDD ≤ 40 ns), BUSY flag behavior under address contention, 3.3V-only TTL-compatible operation, and support for MASTER/SLAVE cascading in 16-bit memory systems.

Technical Context

The 70V06L55PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling simultaneous reads from identical memory locations without conflict. Its hardware arbitration logic uses BUSY outputs (push-pull, not open-drain) and M/S select to coordinate access between master and slave configurations.

It integrates dedicated semaphore registers (8 flags, addressed via A0–A2) with write-to-I/O0/read-from-I/O0–I/O7 protocol and supports interrupt signaling via fixed mailbox addresses (3FFE_H for INTL, 3FFF_H for INTR), all operating at 3.3V ±0.3V with no external level translation required.

Key Specifications

Pinout & Package

70V06L55PF is packaged in a 68-pin PLCC (PLG68) with 0.05-inch lead pitch and body size ≈ 1.18 in × 1.18 in × 0.16 in. All VDD pins require connection to 3.3V supply; all VSS pins must be grounded.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-55AXC and IDT70V25L25PF, the 70V06L55PF uniquely delivers 16K × 8 density in PLCC-68 at 55 ns with integrated semaphore/interrupt logic-making it optimal for cost-sensitive, space-constrained industrial and avionics designs requiring exact byte-wide dual-port bandwidth.

Availability

70V06L55PF is available at Aetrix Electronics and suitable for industrial PLC communication modules, avionics data exchange units, and medical imaging real-time buffers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 70V06L55PF 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 IDT70V06 family was designed specifically for real-time inter-processor communication in embedded systems requiring deterministic arbitration, low-latency memory sharing, and hardware-enforced synchronization primitives.

FAQ

What is the maximum operating temperature range for the 70V06L55PF?

The 70V06L55PF is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table and DC Operating Conditions section of the official IDT datasheet (document #2942, Rev Feb.07.20). No derating is required within this range, and all AC parameters-including tRC = 55 ns-are guaranteed across the full span.

Does the 70V06L55PF support battery backup operation?

Yes, the 70V06L55PF supports battery backup operation with 2V data retention capability. This is explicitly stated in the Features section of the datasheet: "Battery backup operation-2V data retention." The device maintains stored data at VDD as low as 2.0V, enabling use with backup coin-cell batteries or supercapacitors during main power loss.

How does the BUSY arbitration logic work on the 70V06L55PF?

The 70V06L55PF uses push-pull BUSY outputs (BUSYL/BUSYR) that assert low when both ports access the same memory address. When configured as Master (M/S = VIH), BUSY signals indicate contention; as Slave (M/S = VIL), they serve as inputs that inhibit writes. Timing is governed by tAPS = 5 ns setup and tBDD ≤ 40 ns disable-to-valid-data delay, ensuring deterministic priority resolution.

Can the 70V06L55PF be used in a 16-bit data bus configuration?

Yes, the 70V06L55PF supports 16-bit expansion using the Master/Slave select (M/S) pin. Two devices can be cascaded-one as Master (M/S = VIH), one as Slave (M/S = VIL)-to form a 16K × 16 memory without external logic. This is documented in the Features section: "IDT70V06 easily expands data bus width to 16 bits or more using the Master/Slave select when cascading more than one device."

What are the valid semaphore address ranges for the 70V06L55PF?

The 70V06L55PF implements eight semaphore flags addressed by A0–A2 (i.e., addresses 000₂ to 111₂). Access requires CE = VIH and SEM = VIL, as defined in Truth Table II and Functional Description. Writing to I/O0 sets the flag; reading returns the value across I/O0–I/O7. This is distinct from main memory access, which requires CE = VIL and SEM = VIH.