Renesas 70V06L15PFG

Overview

70V06L15PFG from IDT (now Renesas) is a high-speed 3.3V 16K × 8 true dual-port static RAM with independent left/right ports, 15 ns max access time (commercial grade), TTL-compatible I/O, and full on-chip semaphore and interrupt logic - used in real-time inter-processor communication systems requiring simultaneous memory access without arbitration overhead.

For engineers reviewing the 70V06L15PFG datasheet, 70V06L15PFG pinout, 70V06L15PFG application, or 70V06L15PFG equivalent, key selection criteria include bus contention resolution via BUSY flag timing (tBAA ≤ 15 ns), master/slave configuration support (M/S pin), and dual-port power-down capability (ISB3 ≤ 0.2 mA).

Technical Context

The 70V06L15PFG implements fully asynchronous dual-port operation: each port has dedicated address (A0L–A13L / A0R–A13R), data (I/O0L–I/O7L / I/O0R–I/O7R), and control lines (CEL/CER, R/WL/R/WR, OEL/OER). Port arbitration is hardware-managed via push-pull BUSYL/BUSYR outputs and M/S-selectable master/slave mode.

It integrates three co-located but functionally separate subsystems: memory array (128 Kbit SRAM), semaphore logic (8 flags addressed by A0–A2), and interrupt controller (INTL/INTR triggered by writes to 3FFE_H/3FFF_H). All operate under single 3.3 V ±0.3 V supply with battery backup down to 2 V for data retention.

Key Specifications

Pinout & Package

68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in, lead pitch 0.05 in, JEDEC MO-047AC compliant. Pin 1 marked by index notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and AS7C316000PFGI-15, the 70V06L15PFG uniquely integrates full hardware semaphore, interrupt, and BUSY arbitration in a 68-pin PLCC package - reducing BOM count and PCB area for tightly coupled multi-processor designs.

Availability

70V06L15PFG is available at Aetrix Electronics and suitable for real-time industrial control, avionics data concentrators, medical imaging subsystems, and dual-core embedded systems requiring stable component supply with long-term lifecycle assurance.

Supply support for 70V06L15PFG 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in high-performance timing, memory, and interface solutions for communications and computing infrastructure.

The 70V06L15PFG belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic inter-processor communication in safety-critical and real-time embedded systems where hardware arbitration eliminates software-induced latency jitter.

FAQ

What is the maximum operating frequency supported by the 70V06L15PFG?

The 70V06L15PFG supports a maximum read cycle time (tRC) of 15 ns, enabling reliable operation up to 66.7 MHz in synchronous systems. Its fully asynchronous architecture allows variable clock rates per port, with timing governed by tAA (15 ns max), tACE (15 ns max), and tAOE (10 ns max) - making it suitable for mixed-clock-domain designs without synchronization logic.

Does the 70V06L15PFG support battery backup operation?

Yes, the 70V06L15PFG supports battery backup operation down to 2 V for data retention, preserving memory contents during main power loss. This feature is explicitly specified in the datasheet under "Battery backup operation-2V data retention" and is validated across the commercial temperature range (0°C to +70°C), making it suitable for UPS-backed industrial controllers and avionics systems.

How does the M/S pin affect BUSY signal behavior on the 70V06L15PFG?

When M/S = VIH, the 70V06L15PFG operates as a master: BUSYL and BUSYR are push-pull outputs that assert LOW during address contention. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs that must be driven externally to inhibit writes - enabling hierarchical arbitration in multi-device configurations without additional logic.

Can the 70V06L15PFG be used in a 16-bit data bus configuration?

Yes, the 70V06L15PFG supports 16-bit expansion using master/slave cascading: two devices can be configured with one as master (M/S = VIH) and the other as slave (M/S = VIL), sharing BUSY signals to coordinate access. The datasheet confirms this capability with full timing compatibility and no external logic required - enabling error-free 16-bit word systems at full speed.

What are the valid interrupt mailbox addresses for the 70V06L15PFG?

The 70V06L15PFG uses fixed interrupt mailbox addresses: INTL (left port flag) is set when the right port writes to address 3FFE_H, and cleared when the left port reads 3FFE_H; INTR (right port flag) is set when the left port writes to 3FFF_H, and cleared when the right port reads 3FFF_H. These addresses are hardwired and non-reconfigurable per the functional description and Truth Table III.