Renesas 7007L35PF

Overview

IDT7007L35PF from Integrated Device Technology (IDT) is a high-speed 32K × 8 dual-port static RAM with true independent left/right port access, 35 ns read cycle time (t_RC), industrial temperature range (–40°C to +85°C), and TTL-compatible 5 V ±10% supply. It enables simultaneous reads of the same memory location and supports master/slave cascading for 16-bit+ bus expansion in real-time inter-processor communication systems.

For engineers reviewing the IDT7007L35PF datasheet, IDT7007L35PF pinout, IDT7007L35PF application, or IDT7007L35PF equivalent, key selection criteria include BUSY arbitration timing (t_BDD ≤ 35 ns), semaphore flag support (8 flags via A0–A2), interrupt mailbox addressing (7FFE/7FFF), low standby current (ISB3 ≤ 5 µA), and PLCC-68 package compatibility with legacy board layouts.

Technical Context

The IDT7007L35PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-no shared clock or synchronization required. Its on-chip arbitration logic resolves contention via BUSY flag assertion (push-pull output) when address matches occur between ports, with priority determined by t_APS (5 ns setup).

It integrates full hardware semaphore signaling (SEML/SEMR) and interrupt generation (INTL/INTR) using dedicated mailbox addresses (7FFE/7FFF). Memory access requires CE = VIL and SEM = VIH for RAM mode; CE = VIH and SEM = VIL for semaphore mode-mode selection is mutually exclusive and electrically enforced.

Key Specifications

Pinout & Package

IDT7007L35PF is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 24.1 mm × 24.1 mm × 4.3 mm, with lead finish SnPb. All V_CC and GND pins must be decoupled locally; NC pins are not internally connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-35AXC and R1EX24032AS0C-35, the IDT7007L35PF uniquely delivers integrated hardware arbitration, semaphore, and interrupt features in a 5 V, 8-bit, PLCC-68 package-enabling deterministic real-time inter-processor communication without firmware overhead or voltage translation.

Availability

IDT7007L35PF is available at Aetrix Electronics and suitable for industrial automation controllers, avionics data concentrators, and test-and-measurement instruments requiring stable component supply, long-term lifecycle support, and drop-in replacement capability for legacy IDT7007 designs.

Supply support for IDT7007L35PF 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning solutions before its acquisition by Renesas in 2019. IDT's dual-port SRAMs were engineered for deterministic real-time systems.

The IDT7007 product line was designed specifically for high-reliability, multi-processor embedded systems requiring hardware-enforced memory coherency-targeting aerospace, industrial control, and telecom infrastructure applications.

FAQ

What is the maximum operating temperature range for the IDT7007L35PF?

The IDT7007L35PF is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all AC and DC electrical parameters in the datasheet, including 35 ns read cycle time and 5 µA standby current. The device uses standard plastic PLCC packaging qualified to JEDEC J-STD-020 moisture sensitivity level 3.

Does the IDT7007L35PF support true simultaneous read operations on both ports to the same memory address?

Yes, the IDT7007L35PF supports true simultaneous reads to the same memory location from both left and right ports without contention or arbitration delay. This capability is enabled by its true dual-ported SRAM cell design, which is explicitly confirmed in the datasheet Features section and functional block diagram. No BUSY assertion occurs during concurrent reads.

How does the M/S pin affect BUSY signal behavior on the IDT7007L35PF?

When M/S = H, the IDT7007L35PF operates as a master: BUSYL and BUSYR are push-pull outputs that assert LOW during port-to-port address contention. When M/S = L, it operates as a slave: BUSYL and BUSYR become inputs that must be driven LOW by a master device to inhibit writes-this configuration enables daisy-chained arbitration across multiple IDT7007L35PF devices.

Can the IDT7007L35PF be used in a 3.3 V system?

No, the IDT7007L35PF requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and is TTL-compatible. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive levels (VOH = 2.4 V min, VOL = 0.4 V max) are specified only for 5 V operation. Using it with 3.3 V violates absolute maximum ratings and will result in undefined logic states and potential damage.

What is the function of the SEM pins on the IDT7007L35PF?

The SEML and SEMR pins on the IDT7007L35PF enable hardware semaphore register access. When SEM = VIL and CE = VIH, the device enters semaphore mode-allowing read/write of eight dedicated flags using A0–A2 as address lines. This mode is electrically isolated from RAM mode (CE = VIL, SEM = VIH) and eliminates need for external semaphores in multi-CPU systems.