Renesas 7007L20PFGI8

Overview

7007L20PFGI8 from IDT (Integrated Device Technology) is an industrial-grade, high-speed 32K × 8 dual-port static RAM with true independent left/right port access, 20 ns max read cycle time, 850 mW typical active power, and full on-chip semaphore and interrupt logic - used in real-time inter-processor communication systems such as radar signal processors and dual-CPU industrial controllers.

For engineers reviewing the 7007L20PFGI8 datasheet, 7007L20PFGI8 pinout, 7007L20PFGI8 application, or 7007L20PFGI8 equivalent, key selection considerations include its 80-pin TQFP package, master/slave arbitration support, BUSY flag timing (tBDD ≤ 30 ns), and industrial temperature range (–40°C to +85°C) compliance.

Technical Context

The 7007L20PFGI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling simultaneous read/write operations-even to the same memory location-via hardware-managed arbitration. Its on-chip logic supports three concurrent coordination mechanisms: BUSY-flag arbitration (M/S-selectable), eight-bit semaphore registers (addressed via A0–A2), and dedicated INTL/INTR flags triggered by writes to fixed mailbox addresses (7FFE_H/7FFF_H).

Each port features independent chip enable (CEL/CER), read/write (R/WL/R/WR), and output enable (OEL/OER) controls, with automatic low-power standby when CE is high. The device operates at 5.0 V ±10% and uses TTL-compatible input thresholds, with all outputs driving push-pull (not open-drain) BUSY and INT signals.

Key Specifications

Pinout & Package

7007L20PFGI8 is housed in an 80-pin thin quad flatpack (TQFP) with exposed thermal pad, compliant with JEDEC MO-220. All VCC pins require local 0.1 µF decoupling; GND pins must be connected to solid ground plane. Pin 1 marked via corner notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-20AXC and IDT70V27L25PFGI, the 7007L20PFGI8 uniquely delivers industrial-temperature-rated 20 ns performance with integrated semaphore and interrupt logic in a space-efficient 80-pin TQFP - reducing BOM count and PCB area in safety-critical dual-processor systems.

Availability

7007L20PFGI8 is available at Aetrix Electronics and suitable for radar signal processors, dual-CPU industrial controllers, and avionics flight management units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 7007L20PFGI8 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 timing, memory interface, and RF solutions for high-performance computing and communications infrastructure.

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

FAQ

What is the maximum operating temperature range for the 7007L20PFGI8?

The 7007L20PFGI8 is rated for industrial operation from –40°C to +85°C. This specification is validated per the manufacturer's datasheet (DSC 2940/16, September 2019) and applies to all DC and AC electrical parameters under 5.0 V ±10% supply conditions. The 7007L20PFGI8 does not support military-grade temperature ranges.

Does the 7007L20PFGI8 support true simultaneous read access to the same memory location from both ports?

Yes, the 7007L20PFGI8 implements true dual-port SRAM cells that permit concurrent reads from identical addresses on left and right ports without contention or data corruption. This behavior is inherent to the cell architecture and requires no arbitration - confirmed in the Functional Block Diagram and Truth Table I of the official datasheet.

How is semaphore functionality implemented in the 7007L20PFGI8?

The 7007L20PFGI8 integrates eight dedicated semaphore flags accessed via A0–A2 address lines when SEM = VIL and CE = VIH. Each flag is written using I/O0 and read across all I/O lines. This on-chip logic eliminates external latches or gates - a capability explicitly documented in Truth Table II and the "Full on-chip hardware support of semaphore signaling" feature list.

What is the function of the M/S pin on the 7007L20PFGI8?

The M/S (Master/Slave) pin configures arbitration behavior: when high, BUSYL and BUSYR operate as push-pull outputs indicating port contention; when low, they become inputs that inhibit writes on the receiving port. This enables cascaded master/slave configurations - a core design feature described in the datasheet's "M/S = H for BUSY output flag on Master, M/S = L for BUSY input on Slave" note.

Can the 7007L20PFGI8 be used in a 3.3 V system?

No, the 7007L20PFGI8 is specified exclusively for 5.0 V ±10% operation (4.5 V to 5.5 V). Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max), output drive strength, and internal logic are optimized for 5 V TTL compatibility. Using it with 3.3 V supplies violates Absolute Maximum Ratings and will result in unreliable operation or damage.