Renesas 7007L20PF

Overview

7007L20PF from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 20 ns maximum access time (industrial grade), 5 V ±10% single supply, and on-chip semaphore/interrupt arbitration logic - used in real-time inter-processor communication systems requiring simultaneous memory access without contention.

For engineers reviewing the 7007L20PF datasheet, 7007L20PF pinout, 7007L20PF application, or 7007L20PF equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), 80-pin TQFP package, BUSY/INT flag timing, master/slave cascading capability, and dual-port power-down control via CE.

Technical Context

The 7007L20PF implements fully asynchronous dual-port operation with separate address, data, and control buses per port. Its on-chip arbitration logic resolves port conflicts using BUSY flag assertion based on address match or chip enable timing, with priority set-up time (tAPS) of 5 ns.

It supports two distinct memory access modes: standard RAM access (CE = LOW, SEM = HIGH) and semaphore register access (CE = HIGH, SEM = LOW), enabling eight hardware semaphores addressed via A0–A2. Interrupt flags (INTL/INTR) are triggered by writes to dedicated mailbox addresses (7FFE_H/7FFF_H).

Key Specifications

Pinout & Package

7007L20PF is packaged in an 80-pin thin quad flatpack (TQFP) with exposed thermal pad, pin pitch 0.5 mm, and JEDEC MO-159AC compliance. All VCC pins require local 0.1 µF decoupling; all GND pins must be connected to solid ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-20AXC and AS7C3256A-20TIN, the 7007L20PF uniquely integrates full hardware arbitration, semaphore registers, and master/slave configuration in a compact 80-pin TQFP - reducing BOM count and improving determinism in tightly coupled dual-processor systems.

Availability

7007L20PF is available at Aetrix Electronics and suitable for industrial PLC communication, real-time motion control, and avionics data concentrators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 7007L20PF 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, RF, and high-performance interconnect solutions, now part of Renesas Electronics.

The IDT7007 family was designed specifically for deterministic inter-processor communication in industrial, military, and telecom systems - delivering hardware-accelerated memory coherency without external logic.

FAQ

What is the operating temperature range supported by the 7007L20PF?

The 7007L20PF is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings and DC Operating Conditions tables of the official IDT datasheet (DSC 2940/16, September 2019). It does not support commercial (0°C to +70°C) or military (–55°C to +125°C) grades - the "L" suffix explicitly denotes industrial qualification. The 7007L20PF maintains full 20 ns access time performance across this entire range.

Does the 7007L20PF support true simultaneous read operations from both ports to the same memory address?

Yes, the 7007L20PF supports true simultaneous reads from both left and right ports to the same memory location without contention or data corruption. This capability is explicitly stated in the Features section ("True Dual-Ported memory cells which allow simultaneous reads of the same memory location") and enabled by its dual-port SRAM cell architecture. Writes to the same address from both ports are arbitrated via BUSY logic, but concurrent reads require no arbitration and return valid data on both I/O buses.

How is semaphore functionality implemented in the 7007L20PF?

The 7007L20PF implements eight hardware semaphore flags accessed via the same I/O0–I/O7 pins using dedicated control: CE = HIGH and SEM = LOW. Semaphore addresses are selected by A0–A2, allowing read/write of individual flags without affecting main memory. This is documented in Truth Table II and the Functional Description section. The 7007L20PF does not require external latches or software emulation - semaphore state changes occur atomically in hardware upon write pulse completion.

What package type and pin count does the 7007L20PF use?

The 7007L20PF uses an 80-pin thin quad flatpack (TQFP) package, as confirmed by the Pin Configurations section (drawing 2940 drw 03) and ordering information in the datasheet. Its dimensions are approximately 14 mm × 14 mm × 1.4 mm. The "PF" suffix in the part number directly corresponds to this TQFP variant. It is distinct from the 68-pin PLCC (7007L20P) and 68-pin PGA (7007L20G) variants also offered in the IDT7007L family.

Can the 7007L20PF be used in a master/slave configuration to expand data bus width?

Yes, the 7007L20PF supports master/slave cascading via the M/S pin to construct wider memory systems (e.g., 16-bit or more). When M/S = HIGH, BUSY is an output (master); when M/S = LOW, BUSY is an input (slave). This is explicitly described in the Features list and Functional Block Diagram. Multiple 7007L20PF devices can be synchronized to eliminate external arbitration logic - enabling full-speed, error-free operation in wide-bus architectures without discrete glue logic.