Renesas 7006L55PF

Overview

IDT7006L55PF from Integrated Device Technology (IDT) is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 55 ns maximum read cycle time, TTL-compatible 5 V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables simultaneous reads of the same memory location and supports master/slave cascading for 16-bit+ bus expansion in real-time interprocessor communication systems.

For engineers reviewing the IDT7006L55PF datasheet, IDT7006L55PF pinout, IDT7006L55PF application, or IDT7006L55PF equivalent, key selection criteria include BUSY arbitration timing (tBDD ≤ 30 ns), semaphore flag support (8 flags via A0–A2), low standby current (1 µA typ.), battery backup capability (2 V data retention), and 64-pin TQFP package compatibility with PCB layout constraints.

Technical Context

The IDT7006L55PF implements fully asynchronous dual-port architecture with on-chip arbitration logic and dedicated semaphore signaling. Its left and right ports feature independent address decoders, I/O controls, and control signal sets (CEL/CER, R/WL/R/WR, OEL/OER), enabling concurrent read/write operations without external logic.

It uses CMOS high-performance fabrication to achieve 700 mW typical active power and 1 mW typical standby power. The device supports both CE-controlled and R/W-controlled write cycles, with BUSY flag generation (M/S = VIH) or BUSY input (M/S = VIL) for port contention resolution, and includes interrupt flag outputs (INTL/INTR) with programmable set/reset timing.

Key Specifications

Pinout & Package

Package: 64-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-55AXC and AS7C316000B-55PCN, the IDT7006L55PF uniquely delivers 5 V TTL compatibility, integrated BUSY/semaphore arbitration, and industrial temperature rating in a compact 64-pin TQFP-making it optimal for legacy 5 V embedded systems requiring hardware-enforced concurrency control.

Availability

IDT7006L55PF is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffering, and industrial PLC memory expansion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT7006L55PF 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs, acquired by Renesas Electronics in 2019.

The IDT7006 product line was designed for high-reliability dual-ported memory applications in military, industrial, and telecommunications equipment where deterministic arbitration and low-latency shared memory access are critical.

FAQ

What is the maximum operating temperature range for the IDT7006L55PF?

The IDT7006L55PF is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Maximum Operating Temperature and Supply Voltage" table and applies specifically to the L-grade (low-power) variant in the 55 ns speed bin. It does not support military-grade (–55°C to +125°C) or commercial-grade (0°C to +70°C) operation.

Does the IDT7006L55PF support battery backup operation, and what voltage is required?

Yes, the IDT7006L55PF supports battery backup operation with guaranteed data retention at 2.0 V (VDR = 2.0 V min). This is explicitly specified in the "Data Retention Characteristics" table for L-version devices and validated under conditions of VCC = 2 V, TA = +25°C. The 1 µA typical standby current enables multi-year retention on small coin-cell batteries.

How does the M/S pin configure master versus slave behavior in the IDT7006L55PF?

When M/S = VIH, the IDT7006L55PF operates as a master: BUSYR becomes an output flag indicating right-port contention, and BUSYL is unused. When M/S = VIL, it operates as a slave: BUSYL becomes an input used to block writes during contention, and BUSYR is unused. This configuration is defined in the "Pin Names" table and functional block diagram.

What is the purpose of the semaphore enable (SEML/SEMR) pins on the IDT7006L55PF?

The SEML and SEMR pins enable access to the internal 8-bit semaphore register instead of the main RAM array. When SEM = VIL, address bits A0–A2 select one of eight semaphore flags, and I/O0–I/O7 read/write flag state. This provides hardware-level mutual exclusion without software intervention, as detailed in Truth Table II and the "Semaphore Read/Write Control" section.

Can the IDT7006L55PF be used in a single-port configuration, and how is that achieved?

Yes, the IDT7006L55PF can operate as a single-port SRAM by tying one port's chip enable (e.g., CER) permanently high and using only the other port (e.g., left port with CEL, R/WL, OEL). All control, address, and I/O signals for the disabled port must remain static or driven to valid logic levels per the DC operating conditions table to avoid increased leakage or undefined behavior.