Renesas 7024L17PF8

Overview

7024L17PF8 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), 1 mW typical standby power, TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic - deployed in real-time multiprocessing systems requiring simultaneous memory access without external logic.

For engineers reviewing the 7024L17PF8 datasheet, 7024L17PF8 pinout, 7024L17PF8 application, or 7024L17PF8 equivalent, this page delivers verified timing specs, master/slave BUSY flag behavior, byte-select control for multiplexed bus interfacing, battery-backed data retention at 2V, and precise PLCC-84 pin mapping per official IDT documentation.

Technical Context

The 7024L17PF8 implements fully asynchronous dual-port operation: either port can perform independent reads or writes to any address without synchronization. Its on-chip arbitration logic resolves contention via BUSY flag signaling when both ports access the same location - with M/S pin configuring master (BUSY output) or slave (BUSY input) mode.

It supports semaphore flag management across both ports using dedicated SEM, INT, and BUSY signals, enabling inter-processor coordination. The device features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for 16-bit data bus compatibility with 8-bit microcontrollers and DSPs.

Key Specifications

Pinout & Package

7024L17PF8 is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC), designated PLG84 per IDT documentation. The package is leaded, surface-mountable, and RoHS-compliant (green part). Dimensions: ~29.2 mm × 29.2 mm × 4.3 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-15VC, the 7024L17PF8 integrates hardware semaphore and master/slave arbitration - reducing BOM count and firmware complexity. Against IDT7025L17PF8, it offers lower cost and smaller footprint where 4K depth suffices.

Availability

7024L17PF8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics display subsystems, and DSP-based motor control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 7024L17PF8 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 7024L17PF8 belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for real-time multiprocessing systems where deterministic latency, hardware arbitration, and battery-backed reliability are critical.

FAQ

What is the maximum operating frequency supported by the 7024L17PF8?

The 7024L17PF8 does not use a clock; its maximum effective throughput is determined by its 17 ns read cycle time (tRC), supporting up to approximately 58.8 MHz sustained random access. This is confirmed in Table 12a of the official IDT datasheet under "READ CYCLE" parameters for the 7024X17 variant.

Does the 7024L17PF8 support battery backup operation, and what voltage is required?

Yes, the 7024L17PF8 supports battery backup: it retains data at VCC = 2.0 V minimum, with typical data retention current (ICCDR) of 100 µA. This is explicitly specified in Table 10 under "Data Retention Characteristics" for the L-version devices like the 7024L17PF8.

How does the M/S pin affect BUSY signal behavior on the 7024L17PF8?

When M/S = HIGH, the 7024L17PF8 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 used to receive BUSY signals from a master device - enabling daisy-chained arbitration in multi-chip systems.

Can the 7024L17PF8 perform simultaneous read operations on both ports to the same memory address?

Yes, the 7024L17PF8 uses true dual-port memory cells that allow simultaneous reads from both ports to the same address without contention or delay - a core feature confirmed in the "Features" section and functional block diagram of the datasheet. BUSY flags remain inactive during concurrent reads.

What is the purpose of the SEM pin on the 7024L17PF8, and how is it used?

The SEM (Semaphore Enable) pin on the 7024L17PF8 selects between RAM array access (SEM = HIGH) and eight-register semaphore space (SEM = LOW). When active, A0–A2 address one of eight hardware semaphore flags, allowing inter-processor lock management without software overhead - detailed in Truth Table II and Figure 12.