Renesas 7024L15PFI8

Overview

7024L15PFI8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 15 ns maximum read cycle time (commercial grade), TTL-compatible 5V ±10% supply, and integrated on-chip semaphore and port arbitration logic - deployed in real-time inter-processor communication systems requiring simultaneous, conflict-free memory access.

For engineers reviewing the 7024L15PFI8 datasheet, 7024L15PFI8 pinout, 7024L15PFI8 application, or 7024L15PFI8 equivalent, key selection criteria include its 15 ns access timing, battery-backed 2V data retention capability, Master/Slave cascading support for 32-bit+ bus expansion, and full asynchronous dual-port operation without external logic.

Technical Context

The 7024L15PFI8 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 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, 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 automatic power-down via chip enable, achieving 1 µA typical standby current in full CMOS-level disable mode.

Key Specifications

Pinout & Package

7024L15PFI8 is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package, measuring approximately 1.15 in × 1.15 in × 0.17 in, with gull-wing leads and internal heat slug for thermal dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1354KV18 and AS7C34098B, the 7024L15PFI8 uniquely delivers 5V TTL compatibility, integrated hardware semaphores, and Master/Slave cascading - making it irreplaceable in legacy real-time control systems where board-level redesign is prohibited.

Availability

7024L15PFI8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, aerospace flight control units, and medical imaging data buffers requiring stable component supply across extended product lifecycles.

Supply support for 7024L15PFI8 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 sensor solutions, acquired by Renesas Electronics in 2019.

The 7024L15PFI8 belongs to IDT's legacy high-speed dual-port SRAM family, designed specifically for deterministic inter-processor communication in real-time embedded systems where hardware-enforced synchronization is non-negotiable.

FAQ

What is the guaranteed maximum access time for 7024L15PFI8 under commercial conditions?

The 7024L15PFI8 guarantees a maximum address access time (tAA) of 15 ns over the commercial temperature range (0°C to +70°C) with VCC = 5.0 V ±10%. This value is production-tested and specified in the official IDT datasheet revision Feb.20.20, Table 12a. It applies to both left and right ports under standard RAM access mode (SEM = VIH).

Does 7024L15PFI8 support battery backup operation, and what is the minimum retention voltage?

Yes, the 7024L15PFI8 supports battery backup operation with a minimum VCC of 2.0 V for data retention, as confirmed in Table 10 (tCDR and VDR specifications). At this voltage, it retains data with ≤4000 µA typical current draw across the industrial temperature range (–40°C to +85°C), per IDT's characterization data.

How does the Master/Slave (M/S) pin configure port arbitration in 7024L15PFI8?

When M/S = HIGH, the 7024L15PFI8 operates as Master: BUSYL and BUSYR become push-pull outputs reflecting internal arbitration status. When M/S = LOW, it operates as Slave: BUSYL and BUSYR become inputs, allowing external BUSY signals from a Master device to gate writes. This enables scalable multi-device cascading without external logic.

What package type does the 'PFI8' suffix indicate for 7024L15PFI8?

The 'PFI8' suffix denotes an 84-pin Plastic Leaded Chip Carrier (PLCC) package with industrial temperature range (–40°C to +85°C) and 15 ns speed grade. This matches the "PLG84" package code shown in Figure 02F of the IDT datasheet, with body dimensions approx. 1.15 in × 1.15 in × 0.17 in.

Can 7024L15PFI8 perform simultaneous reads from both ports to the same memory address?

Yes - the 7024L15PFI8 uses true dual-ported memory cells that allow concurrent reads from both left and right ports to identical addresses without conflict or performance penalty. This capability is explicitly stated in the "Features" section and verified in Truth Table I and timing waveforms (e.g., Figure 07).