Renesas 7024S17PF

Overview

7024S17PF from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 17 ns maximum read cycle time (commercial grade), TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic-used in real-time interprocessor communication systems requiring simultaneous access to shared memory.

For engineers reviewing the 7024S17PF datasheet, 7024S17PF pinout, 7024S17PF application, or 7024S17PF equivalent, this page delivers verified timing specs (tRC = 17 ns), power metrics (750 mW active, 5 mW standby), package mapping (100-pin TQFP), BUSY/INT flag behavior, and master/slave cascading support for 32-bit+ bus expansion.

Technical Context

The 7024S17PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling concurrent reads/writes-even to the same memory location-via true dual-ported SRAM cells. Its on-chip 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 tSAA (17 ns max) and tSWRD (5 ns) timing for semaphore operations. Battery backup data retention at 2V is supported only in the L variant; the S variant (e.g., 7024S17PF) does not provide this feature.

Key Specifications

Pinout & Package

7024S17PF is packaged in a 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant and green-part qualified per ordering information.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and IDT70V24S15PFI, the 7024S17PF uniquely retains 5V TTL compatibility, built-in M/S cascading, and BUSY-driven arbitration-making it irreplaceable in legacy real-time control systems where deterministic contention resolution and 5V bus integration are mandatory.

Availability

7024S17PF is available at Aetrix Electronics and suitable for real-time interprocessor communication, industrial PLC memory expansion, avionics data acquisition, digital signal processing co-processing, and deterministic control systems requiring stable component supply across extended production lifecycles.

Supply support for 7024S17PF 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions before its acquisition by Renesas in 2019. It pioneered high-speed dual-port SRAM architectures for mission-critical embedded systems.

The 7024S17PF belongs to IDT's legacy 7024S/L family of dual-port SRAMs, designed explicitly for deterministic, low-latency interprocessor communication in aerospace, industrial automation, and telecom infrastructure where hardware arbitration and 5V bus compatibility are non-negotiable.

FAQ

What is the maximum operating frequency supported by the 7024S17PF?

The 7024S17PF has a maximum read cycle time (tRC) of 17 ns, corresponding to a theoretical maximum sustained access rate of 58.8 MHz per port. This is not a clock frequency-it is an asynchronous timing specification meaning consecutive read cycles must be spaced ≥17 ns apart. No internal clock exists; timing is governed solely by control signal setup/hold relationships defined in the datasheet.

Does the 7024S17PF support battery backup data retention?

No-the 7024S17PF is the "S" (standard power) variant and does not support battery backup operation. Only the "L" (low-power) variant (e.g., 7024L17PF) provides 2V data retention capability with typical standby current of 1 µA. The 7024S17PF exhibits 5 mW typical standby power at 5V but loses data when VCC drops below 2.0V.

How does the M/S pin configure master vs. slave operation in the 7024S17PF?

When M/S = HIGH, the 7024S17PF operates as a master: BUSYL and BUSYR become outputs that assert during port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs, accepting BUSY signals from a master device. This enables daisy-chained configurations where one master arbitrates access for multiple slave devices-no external logic required.

Can the 7024S17PF perform simultaneous read and write operations on the same memory location?

Yes-the 7024S17PF uses true dual-ported memory cells that permit simultaneous reads from both ports to the same address without conflict or corruption. However, simultaneous write-to-same-address is prohibited: the BUSY flag activates to block the second write attempt, ensuring data integrity. This behavior is hardware-enforced and requires no software intervention.

What package type is used for the 7024S17PF, and are there footprint-compatible alternatives?

The 7024S17PF uses a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch and 14 mm × 14 mm body. While IDT offered the same speed grade in PGA, Flatpack, and PLCC variants, the 100-pin TQFP is the only version designated by the "PF" suffix. No pin-compatible alternatives exist across manufacturers due to unique BUSY/SEM/INT signal allocation and arbitration logic implementation.