Renesas 7007L20JGI8

Overview

IDT7007L20JGI8 from IDT (now Renesas) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 20 ns max access time (industrial grade), 5 V ±10% single supply, and integrated hardware semaphore/arbiter logic. It enables concurrent read/write access to shared memory in real-time inter-processor communication systems such as industrial PLCs and avionics data concentrators.

For engineers reviewing the 7007L20JGI8 datasheet, 7007L20JGI8 pinout, 7007L20JGI8 application, or 7007L20JGI8 equivalent, this page delivers verified timing specs, master/slave arbitration behavior, BUSY/INT signal timing, semiconductor-grade thermal range (–40°C to +85°C), and confirmed PLCC-68 package mapping - all extracted from the official IDT DSC2940/16 datasheet.

Technical Context

The 7007L20JGI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion (push-pull, not open-drain) and supports both address-match and CE-controlled arbitration modes with tAPS = 5 ns priority setup time.

It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) accessible via SEM = VIL and CE = VIH, enabling inter-port synchronization without external logic. Interrupt flags (INTL/INTR) are triggered by writes to fixed addresses (7FFE_H/7FFF_H) and cleared by reads - all implemented in hardware with no firmware overhead.

Key Specifications

Pinout & Package

7007L20JGI8 is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 24.1 mm × 24.1 mm × 4.3 mm, with 4 corner pins (1, 18, 35, 68) designated as GND and 6 VCC pins distributed across the perimeter for low-noise power delivery.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-20JC and 70V27L20PF8, the 7007L20JGI8 uniquely combines PLCC-68 packaging, hardware semaphore/arbiter, and M/S-configurable BUSY I/O - delivering lowest system-level component count for industrial dual-CPU architectures.

Availability

7007L20JGI8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, aerospace data concentrators, and medical imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for 7007L20JGI8 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, specializes in high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 7007L20JGI8 belongs to IDT's legacy dual-port SRAM family, designed specifically for deterministic inter-processor communication in real-time embedded systems where software-managed shared memory introduces unacceptable latency and complexity.

FAQ

What is the maximum operating temperature range for the 7007L20JGI8?

The 7007L20JGI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all AC and DC parameters in the official IDT DSC2940/16 datasheet, including 20 ns access time, BUSY arbitration timing, and standby current. No derating is required within this range.

Does the 7007L20JGI8 support true simultaneous read operations on both ports?

Yes, the 7007L20JGI8 implements true dual-port memory cells that allow simultaneous reads from the same or different memory locations on left and right ports. This capability is explicitly stated in the "Features" section of the datasheet and verified in the functional block diagram and truth tables.

How does the M/S pin affect BUSY signal behavior on the 7007L20JGI8?

When M/S = H, BUSYL and BUSYR are push-pull outputs (master mode); when M/S = L, they become inputs (slave mode). In slave configuration, an asserted BUSY input inhibits writes on that port. This behavior is documented in Note 1 of the Pin Names table and Truth Table IV in the 7007L20JGI8 datasheet.

Can the 7007L20JGI8 be used without enabling the semaphore or interrupt functions?

Yes. The 7007L20JGI8 operates as a standard dual-port SRAM when SEM = VIH and INTL/INTR are left unconnected. Addresses 7FFE_H and 7FFF_H function as regular memory locations unless explicitly used for mailbox interrupts. Semaphore registers remain inactive unless SEM = VIL and CE = VIH.

What package type is used for the 7007L20JGI8, and are there alternate packages?

The 7007L20JGI8 uses a 68-pin PLCC (Plastic Leaded Chip Carrier) package, as confirmed by the "Pin Configurations" section and ordering code 'JGI8' in the IDT DSC2940/16 datasheet. Alternate versions include 80-pin TQFP (e.g., 7007L20PGI), but the JGI8 suffix specifically denotes the PLCC variant.