Renesas 7006L45FB

Overview

IDT7006L45FB from Integrated Device Technology (IDT) is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 45 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It supports simultaneous reads of the same memory location and enables master/slave cascading for 16-bit-or-wider bus expansion in real-time inter-processor communication systems.

For engineers reviewing the IDT7006L45FB datasheet, IDT7006L45FB pinout, IDT7006L45FB application, or IDT7006L45FB equivalent, key selection considerations include BUSY arbitration timing (tBDD ≤ 30 ns), semaphore flag support (8 flags via A0–A2), low standby current (1 mW typ.), battery-backed data retention at 2 V, and compatibility with 64-pin TQFP packaging for space-constrained embedded control designs.

Technical Context

The IDT7006L45FB implements fully asynchronous dual-port architecture with on-chip arbitration logic that resolves contention via BUSY flag assertion-either address-match or chip-enable controlled-with priority set-up time (tAPS = 5 ns) guaranteeing deterministic port resolution. Its semaphore subsystem uses dedicated SEM/SEML/SEMR pins and I/O0–I/O7 to read/write eight hardware flags, each addressed by A0–A2.

It operates in two distinct functional modes: RAM mode (CE = VIL, SEM = VIH) for standard memory access, and semaphore mode (CE = VIH, SEM = VIL) for inter-port synchronization. The device supports both R/W-controlled and CE-controlled write cycles, with tDW (data valid to end-of-write) specified at 15 ns (max) for the 45 ns speed grade, ensuring reliable handshaking in tightly timed multi-processor environments.

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 and green-part qualified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-45VXI and IDT70V27L25PF, the IDT7006L45FB uniquely delivers 5 V TTL compatibility, hardware semaphore support, and 2 V data retention in a compact 64-pin TQFP-making it optimal for cost-sensitive, power-resilient industrial control upgrades where minimal BOM change is required.

Availability

IDT7006L45FB is available at Aetrix Electronics and suitable for real-time inter-processor communication, motor control system buffering, and redundant PLC I/O data exchange requiring stable component supply across extended product lifecycles.

Supply support for IDT7006L45FB 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 for communications, computing, and industrial markets.

The IDT7006L45FB belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency memory sharing between heterogeneous processors in rugged embedded systems.

FAQ

What is the guaranteed maximum access time for IDT7006L45FB under industrial temperature conditions?

The IDT7006L45FB guarantees a maximum read cycle time (tRC) of 45 ns across the full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V), as verified in the AC Electrical Characteristics table for the "7006X45" speed grade under Industrial grade testing conditions.

Does IDT7006L45FB support battery backup operation, and what is the minimum retention voltage?

Yes, the IDT7006L45FB supports battery backup operation with guaranteed data retention down to 2.0 V (VDR), as specified in the Data Retention Characteristics table. This enables reliable hold-mode operation during main power interruption in industrial controllers and programmable logic systems.

How does the BUSY arbitration mechanism work in IDT7006L45FB when both ports attempt simultaneous access to the same address?

In IDT7006L45FB, when both ports access the same address concurrently, the BUSY flag (BUSYL or BUSYR) is asserted within tBDD ≤ 30 ns to block the later-arriving write. The priority is determined by tAPS (5 ns setup), ensuring deterministic resolution without external logic-critical for real-time deterministic systems.

Can IDT7006L45FB be used in a master/slave configuration to expand data bus width beyond 8 bits?

Yes, IDT7006L45FB supports master/slave cascading via the M/S pin: set M/S = VIH for master (BUSY output) and M/S = VIL for slave (BUSY input). This enables seamless 16-bit-or-wider word systems without external glue logic, as confirmed in the Functional Description and Pin Configurations sections.

What package type is used for IDT7006L45FB, and are thermal or mechanical drawings available?

IDT7006L45FB is packaged in a 64-pin Thin Quad Flatpack (TQFP) with 14 mm × 14 mm body and 0.5 mm lead pitch (package code PNG64). Mechanical drawings-including land pattern, solder paste stencil, and PCB layout guidelines-are published in IDT's official documentation under document number 2739 drw 03.