Renesas 7007L20PFGI

Overview

7007L20PFGI from IDT (now Renesas) is a high-speed 32K × 8 dual-port static RAM with independent left/right asynchronous ports, 20 ns max access time (industrial 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 7007L20PFGI datasheet, 7007L20PFGI pinout, 7007L20PFGI application, or 7007L20PFGI equivalent, key selection criteria include BUSY arbitration timing (tBDD ≤ 30 ns), dual-port power-down current (ISB3 ≤ 5 µA), TQFP-80 package compatibility, and master/slave configuration support via M/S pin.

Technical Context

The 7007L20PFGI implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention using either chip-enable (CE) or address-match detection, with BUSY flag propagation governed by tAPS (5 ns setup) and tBDD (≤30 ns disable-to-valid-data).

It supports two distinct memory access modes: standard RAM access (CE = VIL, SEM = VIH) and semaphore register access (CE = VIH, SEM = VIL), with eight semaphore flags addressed via A0–A2 and written through I/O0. Interrupts are triggered by writes to fixed addresses 7FFE_H (INTL) and 7FFF_H (INTR).

Key Specifications

Pinout & Package

80-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, 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 CY7C028V-20AXC and AS7C33256B-20TIN, the 7007L20PFGI uniquely integrates full hardware arbitration, semaphore registers, and industrial temperature support in a single 80-pin TQFP - reducing BOM count by two ICs and eliminating timing-critical PCB routing for external logic.

Availability

7007L20PFGI is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, avionics, and medical imaging systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 7007L20PFGI 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 timing, memory, and interface solutions for communications, computing, and industrial markets.

The IDT7007 family was designed specifically for deterministic inter-processor communication in real-time embedded systems - emphasizing low-latency arbitration, hardware semaphore support, and robust industrial-grade reliability.

FAQ

What is the maximum operating temperature range for the 7007L20PFGI?

The 7007L20PFGI is rated for industrial operation from −40°C to +85°C. This range is validated across all AC and DC specifications including access time (20 ns max), standby current (ISB3 ≤ 5 µA), and BUSY arbitration timing (tBDD ≤ 30 ns), with no derating required.

Does the 7007L20PFGI support true simultaneous read operations on both ports?

Yes, the 7007L20PFGI implements true dual-port SRAM cells that allow concurrent reads from both left and right ports to the same or different memory locations without conflict or timing penalty - a core architectural feature confirmed in the functional block diagram and truth tables.

How does the M/S pin affect BUSY signal behavior in the 7007L20PFGI?

When M/S = H, BUSYL and BUSYR function as push-pull outputs indicating local port contention; when M/S = L, they become inputs accepting BUSY signals from a master device. This configuration enables hierarchical arbitration in multi-device systems, as defined in Truth Table IV and the BUSY timing section.

Can the 7007L20PFGI be used without enabling the semaphore or interrupt features?

Yes - the 7007L20PFGI operates as a standard dual-port SRAM when SEM = VIH and interrupt addresses (7FFE_H/7FFF_H) are unused. Semaphore and interrupt logic remain inactive but do not impact timing, power, or functionality of basic memory access.

What is the power consumption of the 7007L20PFGI in full standby mode?

In full standby mode (ISB3), where both ports are disabled with CMOS-level inputs and SEM = VIH, the 7007L20PFGI draws ≤5 µA - verified in Table 9 under "Full Standby Current (Both Ports)" for the 7007L industrial variant at VCC = 5.0 V ±10%.