Renesas 7007S20G

Overview

IDT7007S20G 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 operation, and on-chip semaphore/interrupt arbitration logic-designed for real-time interprocessor communication in embedded control systems.

For engineers reviewing the IDT7007S20G datasheet, IDT7007S20G pinout, IDT7007S20G application, or IDT7007S20G equivalent, key selection considerations include BUSY-flag arbitration timing (tBDD ≤ 30 ns), master/slave M/S pin configuration, dual-port contention resolution via semaphore flags (A0–A2 addressed), and compatibility with 68-pin PLCC or 80-pin TQFP PCB footprints.

Technical Context

The IDT7007S20G implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (left: A0L–A14L, I/O0L–I/O7L; right: A0R–A14R, I/O0R–I/O7R), enabling simultaneous read/write to the same memory location without bus contention. Its on-chip arbitration logic resolves port conflicts using BUSY flag assertion (push-pull output) and M/S-selectable master/slave mode.

It supports two distinct memory access modes: RAM array access (CE = LOW, SEM = HIGH) and semaphore register access (CE = HIGH, SEM = LOW), with dedicated interrupt flag latching at fixed addresses (7FFE_H for INTL, 7FFF_H for INTR). All I/Os are TTL-compatible, and power-down is controlled independently per port via CE.

Key Specifications

Pinout & Package

Package: 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in; also available in 80-pin TQFP (not applicable to IDT7007S20G per ordering code).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-20AC and R1EX24032AS0SBG#U0, the IDT7007S20G delivers integrated arbitration, 5 V compatibility, and PLCC packaging-reducing BOM count, layout complexity, and qualification risk in industrial and avionics applications.

Availability

IDT7007S20G is available at Aetrix Electronics and suitable for industrial PLC communication, avionics data exchange, and medical imaging subsystems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IDT7007S20G 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, and RF solutions, now part of Renesas Electronics since 2019.

The IDT7007S20G belongs to IDT's high-speed dual-port SRAM product line, engineered specifically for deterministic interprocessor communication in real-time embedded systems where hardware arbitration and low-latency memory sharing are critical.

FAQ

What is the maximum operating temperature range for the IDT7007S20G?

The IDT7007S20G is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings and Recommended DC Operating Conditions tables of the official datasheet (DSC 2940/16, September 2019), and applies specifically to the 'S' speed grade variant with 20 ns access time.

Does the IDT7007S20G support true simultaneous read operations on both ports?

Yes, the IDT7007S20G features true dual-ported memory cells that allow independent, asynchronous reads from both left and right ports-even to the same memory location-without contention or delay. This capability is explicitly stated in the "Features" section and verified in Truth Table I of the datasheet.

How does the M/S pin affect BUSY signal behavior on the IDT7007S20G?

When M/S = HIGH, the IDT7007S20G operates in master mode: BUSYL and BUSYR are push-pull outputs used to block writes during port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs that must be driven externally to inhibit writes-enabling daisy-chained multi-device configurations.

Can the IDT7007S20G be used in a 16-bit data bus configuration?

Yes, the IDT7007S20G supports 16-bit expansion via its Master/Slave select (M/S) feature. Two devices can be cascaded-one as master, one as slave-with proper BUSY signal routing and address alignment, enabling full-speed 16-bit word access without external logic, as documented in the device description and functional block diagram.

What are the valid addresses for interrupt flag triggering in the IDT7007S20G?

The IDT7007S20G uses fixed addresses to control interrupts: writing to 7FFE_H (hex) with the right port asserts the left-port INTL flag, and writing to 7FFF_H with the left port asserts the right-port INTR flag. These addresses are defined in Truth Table III and confirmed in the Functional Description section of the datasheet.