Renesas 7024L17PFI

Overview

7024L17PFI 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 industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access to the same memory location and supports master/slave cascading for 32-bit+ bus expansion in real-time inter-processor communication systems.

For engineers reviewing the 7024L17PFI datasheet, 7024L17PFI pinout, 7024L17PFI application, or 7024L17PFI equivalent, this device is selected for deterministic low-latency shared-memory architectures requiring hardware semaphore arbitration, battery-backed data retention at 2V, and full on-chip port contention resolution without external logic.

Technical Context

The 7024L17PFI implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port-enabling concurrent reads/writes without internal synchronization overhead. Its on-chip arbitration logic resolves port conflicts via BUSY flag signaling and supports both master (BUSY output) and slave (BUSY input) configurations for scalable multi-device systems.

It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) with atomic read/write capability and full hardware support for inter-port flag exchange. The device uses CMOS technology to achieve 1 mW standby power while maintaining 17 ns access under commercial conditions and retaining data at 2V during battery backup mode.

Key Specifications

Pinout & Package

7024L17PFI is packaged in an 84-pin PLCC (Plastic Leaded Chip Carrier) with 0.050" lead pitch and 1.15" × 1.15" body size. All VCC and GND pins must be connected per datasheet note; N/C pins are internally unused.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and IDT70V24S15PF, the 7024L17PFI uniquely combines 5V TTL compatibility, 2V data retention, industrial temperature rating, and 84-pin PLCC packaging-making it irreplaceable in legacy-reliant, safety-critical, or brown-out-prone embedded systems.

Availability

7024L17PFI is available at Aetrix Electronics and suitable for industrial PLC backplanes, avionics data exchange subsystems, and medical imaging frame buffers requiring stable component supply across extended product lifecycles.

Supply support for 7024L17PFI 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 engineered for deterministic inter-processor communication in real-time embedded systems-prioritizing hardware arbitration, low-latency access, and robust operation across military, industrial, and commercial temperature grades.

FAQ

What is the maximum operating frequency supported by the 7024L17PFI?

The 7024L17PFI supports a maximum read cycle time (tRC) of 17 ns, corresponding to a theoretical maximum sustained read rate of 58.8 MHz per port. This assumes ideal conditions: valid address setup, proper CE/OE timing, and no bus contention. Write cycles follow the same 17 ns timing budget under R/W-controlled or CE-controlled protocols as defined in the AC Electrical Characteristics tables.

Does the 7024L17PFI support battery backup operation, and what voltage is required?

Yes, the 7024L17PFI supports battery backup data retention at 2.0 V minimum (VDR), as specified in Table 10. In data retention mode, CE must be held high (VHC), all inputs biased above VHC or below VLC, and the device draws ≤4 mA typical current. This allows uninterrupted memory preservation during main power loss-critical for industrial controllers and avionics black boxes.

How does the M/S pin configure master versus slave operation in a multi-device 7024L17PFI system?

When M/S = HIGH, the 7024L17PFI operates as a master: BUSYL becomes an output flag indicating local port contention; when M/S = LOW, it operates as a slave: BUSYR becomes an input that blocks writes until deasserted by the master. This enables daisy-chained arbitration without external logic-multiple devices can expand bus width to 32 bits or more using the documented Master/Slave select method.

Can both ports of the 7024L17PFI perform simultaneous reads to the same memory address?

Yes-the 7024L17PFI uses true dual-port memory cells that allow completely independent, simultaneous reads from identical addresses on left and right ports. No arbitration delay, no BUSY assertion, and no data corruption occur. This capability is fundamental to its use in real-time inter-processor communication where latency predictability is mandatory.

What package type is used for the 7024L17PFI, and are there thermal or mounting considerations?

The 7024L17PFI uses an 84-pin Plastic Leaded Chip Carrier (PLCC) with 1.15" × 1.15" body and 0.050" lead pitch. It requires standard PLCC socket or reflow soldering per JEDEC MS-026. Thermal design must account for 750 mW typical active power dissipation; the package has no integrated heat slug, so board-level copper pour and airflow should be verified per application ambient conditions.