Renesas 7005L35PF

Overview

7005L35PF from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 35 ns max read cycle time (tRC), 2V data retention capability, and integrated semaphore/arbitration logic - used in real-time inter-processor communication systems requiring simultaneous access to shared memory without external logic.

For engineers reviewing the 7005L35PF datasheet, 7005L35PF pinout, 7005L35PF application, or 7005L35PF equivalent, this page delivers verified specifications, package mapping, functional pin roles, industrial-grade timing behavior, and validated alternative parts for dual-port SRAM selection in embedded control, military avionics, and industrial PLC architectures.

Technical Context

The 7005L35PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port (A0L–A12L/I/O0L–I/O7L and A0R–A12R/I/O0R–I/O7R), enabling concurrent reads/writes to any memory location. Its on-chip arbitration logic resolves port contention via BUSY flag assertion and supports master/slave cascading using the M/S pin.

It integrates hardware semaphore signaling (SEML/SEMR) with eight dedicated flags addressed by A0–A2, and provides interrupt generation (INTL/INTR) triggered by write-to-specific addresses (e.g., 1FFFh for set, 1FFEh for reset). The device operates at 5.0 V ±10% and retains data down to 2 V in low-power mode.

Key Specifications

Pinout & Package

7005L35PF is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, 14 mm × 14 mm body size, and 1.4 mm height. All VCC pins require connection to 5 V supply; all GND 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 CY7C028V-35AXC and IS61LV5128-35TL, the 7005L35PF uniquely delivers hardware-enforced port arbitration, 2 V data retention, and master/slave cascading in a compact 64-pin TQFP - making it irreplaceable for deterministic, fault-resilient dual-processor architectures where timing predictability and power-loss robustness are mandatory.

Availability

7005L35PF is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial motion control, military avionics data buffering, and redundant flight control systems requiring stable component supply across extended product lifecycles.

Supply support for 7005L35PF 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 timing, memory interface, and RF solutions, acquired by Renesas Electronics in 2019.

The IDT7005 family was designed specifically for high-reliability dual-processor systems requiring deterministic memory access, hardware arbitration, and battery-backed operation - targeting aerospace, defense, and industrial automation markets.

FAQ

What is the maximum operating temperature range certified for the 7005L35PF?

The 7005L35PF is rated for industrial temperature operation from −40°C to +85°C, as explicitly specified in the "Maximum Operating Temperature and Supply Voltage" table and confirmed in the "DC Electrical Characteristics" section for both commercial and industrial grades. This rating applies to all 35 ns speed variants including the 7005L35PF.

Does the 7005L35PF support true simultaneous read operations from both ports to the same memory address?

Yes, the 7005L35PF implements true dual-port memory cells that allow simultaneous reads from both left and right ports to the same address without contention or BUSY assertion. This is explicitly stated in the "Features" section: "True Dual-Ported memory cells which allow simultaneous reads of the same memory location."

How does the M/S pin affect BUSY signal behavior in the 7005L35PF?

When M/S = H, BUSYL and BUSYR function as push-pull outputs asserting busy status during port contention; when M/S = L, they become inputs accepting external BUSY signals from a master device. This is documented in Note 1 of the Pin Names table and the Functional Block Diagram notes, enabling hierarchical arbitration in multi-device systems.

What is the guaranteed data retention voltage for the 7005L35PF, and under what conditions does it apply?

The 7005L35PF guarantees data retention at VCC = 2.0 V, as specified in Table 9 ("Data Retention Characteristics") and the "Data Retention Waveform" diagram. This applies only to the 'L' (low-power) version, with retention current up to 4000 µA over the full military temperature range, and is enabled automatically when CE is deasserted.

Can the 7005L35PF be used in a 16-bit data bus configuration without external logic?

Yes - the 7005L35PF supports native 16-bit expansion via Master/Slave cascading using the M/S pin and BUSY chaining, as stated in the "Description" section: "Using the IDT MASTER/SLAVE Dual-Port RAM approach in 16-bit or wider memory system applications results in full-speed, error-free operation without the need for additional discrete logic."