Renesas 7024L17PFI8

Overview

7024L17PFI8 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), 2V data retention capability, and full on-chip semaphore arbitration logic-designed for real-time inter-processor communication in embedded control systems.

For engineers reviewing the 7024L17PFI8 datasheet, 7024L17PFI8 pinout, 7024L17PFI8 application, or 7024L17PFI8 equivalent, this page delivers verified timing specs, master/slave port arbitration behavior, battery-backed standby operation, and precise TQFP-100 package mapping for memory subsystem integration.

Technical Context

The 7024L17PFI8 implements fully asynchronous dual-port access with separate address, control, and I/O buses per port, enabling simultaneous reads from the same memory location. Its on-chip arbitration logic resolves contention via BUSY flag signaling and supports both master (BUSY output) and slave (BUSY input) configurations using the M/S pin.

It integrates dedicated semaphore registers (addressed by A0–A2) accessible via SEM = VIL, with guaranteed 5 ns semaphore write-to-read delay (tSWRD) and 5 ns contention window (tSPS). The device operates at 5.0 V ±10% and retains data down to 2 V in low-power L-version standby mode.

Key Specifications

Pinout & Package

7024L17PFI8 is packaged in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm footprint, and 1.4 mm height. Pin 1 is marked by a corner notch; 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 CY7C024AV-15AXC and AS7C34096B-17JIN, the 7024L17PFI8 uniquely combines 5 V operation, 2V data retention, hardware semaphore arbitration, and industrial-grade TQFP packaging-making it the only drop-in solution for legacy 5 V dual-processor systems requiring zero-software coordination and fail-safe memory hold.

Availability

7024L17PFI8 is available at Aetrix Electronics and suitable for industrial motion control, avionics data exchange, and automotive ADAS fusion applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for 7024L17PFI8 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 7024L17PFI8 belongs to IDT's legacy high-speed dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and battery-backed retention are mandatory.

FAQ

What is the maximum operating speed of the 7024L17PFI8?

The 7024L17PFI8 has a maximum read cycle time (tRC) of 17 ns, corresponding to a theoretical maximum throughput of approximately 58.8 MHz for consecutive reads. This timing is specified under commercial conditions (0°C to +70°C) with VCC = 5.0 V ±10%, and applies to both ports independently. The 7024L17PFI8 does not specify a clock frequency-it is fully asynchronous, with timing governed solely by setup/hold and access parameters.

Does the 7024L17PFI8 support true simultaneous read operations from both ports?

Yes, the 7024L17PFI8 uses true dual-port memory cells that allow simultaneous reads from the same or different addresses on the left and right ports without contention or latency penalty. This is confirmed in the Functional Block Diagram and "True Dual-Ported memory cells" feature statement. No BUSY assertion occurs during concurrent reads, and output data is valid per port's individual timing specifications (e.g., tAA, tAOE).

How does the M/S pin configure master vs. slave operation in a multi-device system?

When M/S = H (high), the 7024L17PFI8 operates as a master: BUSYL and BUSYR become push-pull outputs reflecting internal arbitration status. When M/S = L (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 coordinates multiple slaves-critical for expanding data bus width beyond 16 bits without external logic.

What is the significance of the 'L' in 7024L17PFI8, and how does it affect power consumption?

The 'L' denotes the low-power version of the IDT7024 family. Compared to the 'S' variant, the 7024L17PFI8 reduces typical standby current (ISB3) from 5 µA to 0.2 µA and enables 2V data retention-key for battery-backed applications. Active power remains identical (750 mW typ.), but the L-version achieves ultra-low hold current through optimized CMOS design, making it suitable for systems requiring extended memory retention during main power loss.

Can the 7024L17PFI8 be used in a single-port configuration?

Yes, the 7024L17PFI8 can operate as a single-port SRAM by tying unused control signals (e.g., CER, R/WR, OER) to inactive states and routing all traffic through one port (e.g., left side). All timing and electrical specifications remain valid in this mode. However, doing so forfeits hardware arbitration, semaphore signaling, and true dual-access benefits-so it is only recommended for legacy drop-in replacements where dual-port functionality is unused.