Renesas 7024S25PF

Overview

7024S25PF from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 25 ns max read cycle time (tRC), TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic - used in real-time inter-processor communication systems requiring simultaneous, conflict-free access to shared memory.

For engineers reviewing the 7024S25PF datasheet, 7024S25PF pinout, 7024S25PF application, or 7024S25PF equivalent, key selection criteria include bus-width expansion capability via Master/Slave cascading, battery-backed data retention down to 2V, industrial temperature support (–40°C to +85°C), and full asynchronous operation per port without external logic.

Technical Context

The 7024S25PF implements fully independent address, control, and I/O paths for left and right ports, enabling concurrent read/write operations-even to the same memory location-via true dual-ported SRAM cells. Its internal arbitration logic resolves port contention using BUSY flag signaling and M/S-selectable master/slave configuration.

It supports two distinct memory access modes: standard RAM access (CE = VIL, UB/LB = VIL, SEM = VIH) and semaphore register access (CE = VIH or UB&LB = VIH, SEM = VIL), with dedicated timing parameters (e.g., tSAA, tSWRD) validated for both. The device uses CMOS process technology and features separate upper/lower byte enables (UBL/UBR, LBL/LBR) for multiplexed bus compatibility.

Key Specifications

Pinout & Package

7024S25PF is housed in a 100-pin TQFP (PNG100) package measuring 14 mm × 14 mm × 1.4 mm, with 0.5 mm lead 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 CY7C1370D-250AXC and IS61WV25616BLL-10MLI, the 7024S25PF uniquely delivers industrial-temperature 25 ns dual-port operation with integrated semaphore and BUSY arbitration at 5 V - making it irreplaceable in legacy-reliant, safety-critical embedded designs where minimal external components and proven field reliability are mandatory.

Availability

7024S25PF is available at Aetrix Electronics and suitable for industrial automation controllers, military avionics subsystems, and telecom baseband processing modules requiring stable component supply across extended product lifecycles.

Supply support for 7024S25PF 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, RF, and high-performance interconnect solutions, now part of Renesas Electronics.

The 7024S25PF belongs to IDT's legacy dual-port SRAM product line, engineered for deterministic, low-latency inter-processor communication in mission-critical embedded systems where hardware arbitration and voltage-margin retention are non-negotiable.

FAQ

What is the maximum operating frequency supported by the 7024S25PF?

The 7024S25PF supports a maximum read cycle time (tRC) of 25 ns, corresponding to a theoretical maximum operating frequency of 40 MHz. This timing is guaranteed across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply, with no derating required for thermal or voltage variation.

Does the 7024S25PF support battery backup operation, and what is the minimum retention voltage?

Yes, the 7024S25PF (L-version variant) supports battery backup operation with guaranteed data retention down to 2.0 V (VDR). At this voltage, typical data retention current is 100 µA, enabling long-term memory preservation during main power loss - a key requirement for industrial and aerospace applications.

How does the Master/Slave (M/S) pin function in a multi-device 7024S25PF configuration?

When M/S = H, the 7024S25PF operates as a Master, driving its BUSY output to signal port contention to downstream Slaves. When M/S = L, it acts as a Slave, accepting BUSY input to stall writes until the Master releases the resource. This enables seamless 32-bit+ bus expansion without external arbitration logic.

Can the 7024S25PF perform simultaneous read operations from both ports to the same memory address?

Yes - the 7024S25PF uses true dual-ported SRAM cells that permit concurrent reads from both left and right ports to identical addresses without conflict, corruption, or timing penalty. This capability is fundamental to its use in real-time data mirroring and cross-processor status monitoring.

What package type is used for the 7024S25PF, and are there thermal design considerations?

The 7024S25PF is supplied in a 100-pin Thin Quad Flatpack (TQFP, PNG100) package measuring 14 mm × 14 mm × 1.4 mm. It includes an exposed thermal pad requiring solder connection to a solid ground plane for optimal heat dissipation - especially critical during sustained active operation at 750 mW typical power draw.