Renesas 7024S20G

Overview

7024S20G from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 20 ns max access time (commercial/industrial), TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic - used in real-time embedded systems requiring concurrent CPU/DSP memory access without external logic.

For engineers reviewing the 7024S20G datasheet, 7024S20G pinout, 7024S20G application, or 7024S20G equivalent, key selection criteria include dual-port arbitration timing (tBDD ≤ 30 ns), battery-backed data retention at 2V (IDT7024L variant), and Master/Slave BUSY flag behavior for cascaded 32-bit+ memory expansion.

Technical Context

The 7024S20G implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling simultaneous read/write to any location - including same-address reads - via true dual-ported SRAM cells. Its on-chip arbitration logic resolves contention using BUSY flag signaling and M/S select configuration.

It supports semaphore flag management across ports (8 flags, addressed by A0–A2), interrupt generation (INTL/INTR), and byte-selectable I/O (UBL/UBR, LBL/LBR) for multiplexed bus compatibility. Power-down is controlled independently per port via CE, achieving 5 mW standby (S version) or 1 µW (L version) under full CMOS-level disable.

Key Specifications

Pinout & Package

7024S20G is housed in a 100-pin TQFP (PNG100) package measuring 14 mm × 14 mm × 1.4 mm, with 0.5 mm pitch and exposed thermal pad. All VCC and GND pins require proper decoupling per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C133-25JC and AS7C34096A-20TIN, the 7024S20G uniquely delivers hardware-enforced port arbitration, battery-backed 2V retention, and M/S-configurable BUSY signaling - making it irreplaceable in deterministic real-time systems requiring guaranteed contention resolution without firmware overhead.

Availability

7024S20G is available at Aetrix Electronics and suitable for industrial motion controllers, telecom line cards, avionics health monitors, and digital signal processor interfaces requiring stable component supply across extended product lifecycles.

Supply support for 7024S20G 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 IDT7024 family was designed specifically for high-reliability dual-processor and real-time embedded systems requiring deterministic memory access, hardware arbitration, and seamless 32-bit+ bus expansion - targeting industrial automation, aerospace, and communications infrastructure.

FAQ

What is the maximum operating temperature range for the 7024S20G?

The 7024S20G is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table and validated across all AC/DC electrical parameters in the datasheet. The 'S' suffix denotes the standard power version, and the '20' indicates 20 ns access time - both consistent with industrial-grade qualification. No derating is required within this range.

Does the 7024S20G support battery backup operation?

Yes, the 7024S20G supports data retention at 2 V supply voltage, as specified in the Data Retention Characteristics table (VDR = 2.0 V min). While the 'S' variant achieves this at reduced current (ICCDR ≤ 4000 µA), the 'L' variant offers lower standby current (1 µW typical). The 7024S20G maintains stored data without refresh during main power loss - a key feature for fail-safe embedded systems.

How does the Master/Slave (M/S) pin function in the 7024S20G?

In the 7024S20G, the M/S pin configures BUSY behavior: when high, BUSY is an output flag indicating port contention (Master mode); when low, BUSY becomes an input for cascade arbitration (Slave mode). This enables error-free 32-bit+ word expansion using multiple devices without external logic - a documented capability in the Functional Description and Truth Tables sections of the datasheet.

What package type is used for the 7024S20G?

The 7024S20G is supplied in a 100-pin Thin Quad Flatpack (TQFP) package, designated PNG100 in IDT documentation. Its dimensions are 14 mm × 14 mm × 1.4 mm with 0.5 mm lead pitch and an exposed thermal pad. Pin configuration matches the diagram in Figure 2740 drw 03, confirming compatibility with standard SMT reflow profiles and IPC-7351 land patterns.

Can the 7024S20G perform simultaneous reads from both ports to the same memory location?

Yes, the 7024S20G uses true dual-ported memory cells that allow concurrent reads from both left and right ports to identical addresses - explicitly stated in the Features section ("True Dual-Ported memory cells which allow simultaneous reads of the same memory location"). This capability is fundamental to its role in real-time data sharing and eliminates read collision risks inherent in single-port architectures.