Renesas 7006L35PFI

Overview

IDT7006L35PFI from Integrated Device Technology (IDT) is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 35 ns maximum read cycle time, industrial temperature range (–40°C to +85°C), and 1 mW typical standby power. It enables real-time inter-processor communication in embedded control systems requiring deterministic memory arbitration.

For engineers reviewing the IDT7006L35PFI datasheet, IDT7006L35PFI pinout, IDT7006L35PFI application, or IDT7006L35PFI equivalent, key selection criteria include BUSY/INT semaphore timing, M/S master/slave cascading capability, dual-port contention resolution, and TQFP-64 package compatibility with 5 V ±10% supply.

Technical Context

The IDT7006L35PFI implements fully asynchronous dual-port operation with separate address, data, and control buses per port. Its on-chip arbitration logic resolves simultaneous access via BUSY flag assertion and supports semaphore signaling across ports using A0–A2 address lines.

It features hardware-supported semaphore enable (SEML/SEMR), interrupt generation (INTL/INTR), and master/slave configuration (M/S pin) for scalable 16-bit+ memory expansion. The device operates at 5 V ±10%, retains data down to 2 V, and withstands >2001 V ESD.

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 CY7C024AV-35AXC and AS7C316000B-35JCIN, the IDT7006L35PFI uniquely delivers 5 V compatibility, hardware semaphore registers, and master/slave cascading in a 64-pin TQFP - critical for retrofitting legacy industrial controllers without PCB redesign.

Availability

IDT7006L35PFI is available at Aetrix Electronics and suitable for industrial automation, avionics data concentrators, dual-core DSP co-processing, and medical imaging systems requiring stable component supply across extended product lifecycles.

Supply support for IDT7006L35PFI 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs.

The IDT7006L35PFI belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and low-latency memory sharing are essential.

FAQ

What is the maximum operating temperature range for the IDT7006L35PFI?

The IDT7006L35PFI is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and validated in the AC/DC electrical characteristics tables across this full range. This makes it suitable for deployment in harsh environments such as factory automation controllers and outdoor communications equipment where ambient thermal stability cannot be guaranteed.

Does the IDT7006L35PFI support battery backup operation, and what voltage is required?

Yes, the IDT7006L35PFI supports battery backup operation with data retention down to 2.0 V (VDR), as specified in Table 9 under "Data Retention Characteristics." At VCC = 2 V, typical data retention current is 100 µA, enabling long-term state preservation during main power failure - a key requirement for industrial black-box logging and avionics non-volatile memory buffers.

How does the M/S pin function in the IDT7006L35PFI, and what happens when it is tied low?

When the M/S pin is tied low, the IDT7006L35PFI operates as a slave device: BUSYL and BUSYR become input terminals (not outputs), allowing an external master device to drive the BUSY signal and coordinate arbitration across multiple IDT7006L35PFI units. This configuration enables seamless expansion to 16-bit or wider data paths without additional discrete logic, as described in the functional description and pin table.

What is the purpose of the SEM pins (SEML/SEMR) on the IDT7006L35PFI?

The SEML and SEMR pins on the IDT7006L35PFI enable access to eight dedicated hardware semaphore registers. When SEM is asserted low, the device interprets A0–A2 as semaphore address lines and uses I/O0–I/O7 for flag read/write operations - providing atomic resource-locking capability without CPU intervention. This eliminates software-based polling and reduces inter-processor synchronization latency to ≤5 ns, as confirmed in Tables 14a/b and Figure 12.

Can the IDT7006L35PFI perform simultaneous reads from both ports to the same memory location?

Yes, the IDT7006L35PFI supports true simultaneous reads from both ports to the same memory location without conflict or data corruption, as explicitly stated in the "Features" section and verified by the "Truth Table I" on page 5. This capability stems from its true dual-ported memory cell architecture - a defining characteristic that differentiates it from pseudo-dual-port or pipelined SRAMs requiring staggered access.