Renesas 7007L15PFG

Overview

IDT7007L15PFG from IDT (now Renesas) is a high-speed 32K × 8 true dual-port static RAM with independent left/right ports, 15 ns max access time (commercial grade), 5 V ±10% single supply, and integrated hardware semaphore and interrupt logic - used in real-time inter-processor communication systems such as industrial PLCs and telecom line cards.

For engineers reviewing the 7007L15PFG datasheet, 7007L15PFG pinout, 7007L15PFG application, or 7007L15PFG equivalent, this page delivers verified timing specs, master/slave arbitration behavior, BUSY/INT signal timing, semiconductor-grade standby current values, and confirmed TQFP-80 package mapping - all extracted from the official September 2019 DSC 2940/16 datasheet.

Technical Context

The 7007L15PFG implements fully asynchronous dual-port operation with separate address, data, and control buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion (push-pull output) when both ports access the same memory location simultaneously, with priority determined by tAPS (5 ns setup) and M/S pin configuration.

It supports two distinct memory access modes: standard RAM read/write (CE = LOW, SEM = HIGH) and semaphore register access (CE = HIGH, SEM = LOW), using A0–A2 to select among eight semaphore flags. Interrupt flags (INTL/INTR) are triggered by writes to dedicated mailbox addresses (7FFE_H/7FFF_H) and cleared by reads to those same locations.

Key Specifications

Pinout & Package

7007L15PFG is housed in an 80-pin thin quad flatpack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm body, and exposed thermal pad (not electrically connected). Pin 1 marked by dot; pin numbering follows standard counter-clockwise sequence from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and AS7C33256B-15JCIN, the 7007L15PFG uniquely integrates arbitration, semaphore, and interrupt logic in a compact 80-pin TQFP - delivering hardware-enforced coherency without external components or firmware overhead.

Availability

7007L15PFG is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line cards, and medical imaging subsystems requiring stable component supply, long-lifecycle support, and guaranteed commercial-temperature performance.

Supply support for 7007L15PFG 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in high-performance memory, timing, and interface solutions for communications and computing infrastructure.

The IDT7007 family was designed specifically for deterministic inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, low-latency signaling, and seamless master/slave scalability without external logic.

FAQ

What is the maximum operating temperature range for the 7007L15PFG?

The 7007L15PFG is rated for commercial temperature operation only: 0°C to +70°C. It is not specified for industrial (−40°C to +85°C) or extended ranges. This is explicitly defined in Table 5 of the DSC 2940/16 datasheet, where "7007L" suffix denotes commercial-grade speed and temperature grading. Using the 7007L15PFG outside this range may result in timing violations or increased standby current.

Does the 7007L15PFG support true simultaneous read operations from both ports to the same address?

Yes, the 7007L15PFG supports true simultaneous reads from both ports to the same memory location - a core feature of its true dual-port architecture. The datasheet states this explicitly in the Features section: "True Dual-Ported memory cells which allow simultaneous reads of the same memory location." No BUSY assertion or arbitration delay occurs during concurrent reads, enabling deterministic data mirroring.

How is semaphore functionality accessed on the 7007L15PFG?

Semaphore access on the 7007L15PFG requires setting CE = HIGH and SEM = LOW - opposite of normal RAM mode. Eight semaphore flags are addressed using A0–A2, and data is written via I/O0 (per Truth Table II and Section 5). The 7007L15PFG implements this entirely in hardware; no firmware driver is needed beyond standard address/data strobing, as confirmed in the Functional Description and Truth Table V.

What is the function of the M/S pin on the 7007L15PFG?

The M/S (Master/Slave) pin configures BUSY behavior: when HIGH, BUSYL/BUSYR become push-pull outputs indicating contention (MASTER mode); when LOW, they become inputs that inhibit writes on the slave port (SLAVE mode). This enables cascaded configurations for wider data buses, as documented in the Features section and Pin Names table - a defining capability of the 7007L15PFG versus generic dual-port SRAMs.

Is the 7007L15PFG pin-compatible with other members of the IDT7007 family?

Yes, the 7007L15PFG shares identical pinout and package (80-pin TQFP) with all IDT7007X15 variants, including 7007S15PFG and 7007L15PF. Differences are limited to speed grade (15 ns), power rating (L = low-power), and temperature grade (L = commercial), all reflected in the ordering code - not physical layout. This is confirmed in the Pin Configurations section and Package Code "PNG80(4)" reference.