Renesas 7007L35PF8

Overview

7007L35PF8 from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 35 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and integrated semaphore/interrupt arbitration logic - used in real-time inter-processor communication systems requiring simultaneous memory access without contention.

For engineers reviewing the 7007L35PF8 datasheet, 7007L35PF8 pinout, 7007L35PF8 application, or 7007L35PF8 equivalent, key selection criteria include bus width expansion capability via Master/Slave cascading, industrial temperature range (–40°C to +85°C), low standby current (≤5 µA per port), and on-chip hardware semaphore signaling for multi-CPU synchronization.

Technical Context

The 7007L35PF8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent read/write operations to the same memory location. Its internal arbitration logic resolves port conflicts using BUSY flag assertion and M/S-selectable master/slave mode.

It supports two distinct memory access modes: standard RAM access (CE = LOW, SEM = HIGH) and semaphore register access (CE = HIGH, SEM = LOW), with dedicated INTL/INTR flags and eight addressable semaphore bits controlled by A0–A2. All timing parameters are specified at V_CC = 5.0 V ±10% and T_A = –40°C to +85°C.

Key Specifications

Pinout & Package

7007L35PF8 is packaged in an 80-pin thin quad flatpack (TQFP) with 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm, and thermal pad exposed on underside for enhanced heat dissipation in high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-35AXC and IDT70V27L25PFGI, the 7007L35PF8 uniquely delivers 5 V TTL compatibility, industrial temperature operation, Master/Slave expandability, and hardware semaphore support - making it irreplaceable in legacy industrial control and avionics retrofits requiring drop-in 5 V dual-port memory.

Availability

7007L35PF8 is available at Aetrix Electronics and suitable for industrial PLC communication, real-time motor control, avionics data concentrators, and medical imaging pipelines requiring stable component supply across extended product lifecycles.

Supply support for 7007L35PF8 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions, acquired by Renesas Electronics in 2019.

The IDT7007 family was designed specifically for deterministic, contention-free inter-processor communication in industrial automation, aerospace, and medical systems - emphasizing hardware arbitration, low-latency access, and robust 5 V operation.

FAQ

What is the operating temperature range for the 7007L35PF8?

7007L35PF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is verified per the manufacturer's datasheet (DSC 2940/16, September 2019) and applies to all DC and AC electrical characteristics including access time, standby current, and BUSY arbitration timing. It is not qualified for military or extended commercial ranges.

Does the 7007L35PF8 support true simultaneous read operations on both ports?

Yes, the 7007L35PF8 features true dual-ported memory cells that allow simultaneous reads of the same memory location from both left and right ports without contention or arbitration delay. This behavior is explicitly documented in the "Features" section of the datasheet and confirmed by the functional block diagram showing independent I/O control paths.

How does the Master/Slave (M/S) pin affect BUSY pin functionality in the 7007L35PF8?

When M/S = HIGH, BUSYL and BUSYR operate as push-pull outputs indicating port contention; when M/S = LOW, they become inputs that inhibit writes on the slave port. This dual-mode operation is defined in datasheet Note 1 and Truth Table IV, and is essential for cascading multiple 7007L35PF8 devices in wider memory systems.

What are the valid semaphore access conditions for the 7007L35PF8?

Semaphore registers are accessed only when CE = HIGH and SEM = LOW - a condition distinct from standard RAM access (CE = LOW, SEM = HIGH). The eight semaphore flags are addressed via A0–A2, and data is written via I/O0 and read across all I/O lines, as specified in Truth Table II and the "Semaphore Read/Write Control" section of the datasheet.

Can the 7007L35PF8 be used in a single-port configuration?

Yes, the 7007L35PF8 can operate with only one port enabled (e.g., CEL = LOW, CER = HIGH), functioning as a standard 32K × 8 SRAM. In this mode, the unused port enters full standby (I_SB4 ≤ 80 µA), and all arbitration logic remains inactive - confirmed by ISB4 test conditions in Table 9 and the "Full Standby Current" specification.