Renesas 7024L15PF8

Overview

7024L15PF8 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), 2V data retention capability, and full on-chip semaphore and arbitration logic-designed for real-time inter-processor communication in embedded control systems.

For engineers reviewing the 7024L15PF8 datasheet, 7024L15PF8 pinout, 7024L15PF8 application, or 7024L15PF8 equivalent, this device supports simultaneous asynchronous access to the same memory location, MASTER/SLAVE cascading for 32-bit+ bus expansion, and battery-backed operation without external circuitry.

Technical Context

The 7024L15PF8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent read/write operations without internal contention. Its on-chip arbitration logic resolves port conflicts via BUSY flag signaling and supports both master (BUSY output) and slave (BUSY input) configurations using the M/S pin.

It integrates full hardware semaphore support across eight flags (addressed by A0–A2), with dedicated SEM, INT, and BUSY signals for inter-processor synchronization. The device operates at 5.0 V ±10% with TTL-compatible inputs and outputs, and features automatic power-down via CE-controlled standby modes.

Key Specifications

Pinout & Package

7024L15PF8 is packaged in an 84-pin PLCC (Plastic Leaded Chip Carrier) with 0.050" lead pitch and 1.15" × 1.15" body size. Pin 1 is marked by a corner notch; all VCC and GND pins must be externally decoupled.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and IDT70V24L15PF, the 7024L15PF8 delivers unique value through its integrated M/S-configurable BUSY arbitration and eight-hardware semaphore support in a drop-in 5 V, commercial-temp PLCC-84 package-reducing BOM count and firmware complexity in tightly coupled dual-processor designs.

Availability

7024L15PF8 is available at Aetrix Electronics and suitable for industrial automation, avionics data concentrators, and medical imaging control systems requiring stable component supply and long-term lifecycle support.

Supply support for 7024L15PF8 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 high-performance silicon solutions for communications, computing, and industrial markets.

The 7024L15PF8 belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and data coherency are critical.

FAQ

What is the maximum operating frequency supported by the 7024L15PF8?

The 7024L15PF8 has a maximum read cycle time of 15 ns, supporting up to 66.7 MHz sustained read operations per port. Write cycle time is also 15 ns. These values are specified under commercial temperature conditions (0°C to +70°C) and 5.0 V ±10% supply, and apply to both left and right ports independently.

Does the 7024L15PF8 support battery backup operation, and what voltage is required?

Yes, the 7024L15PF8 supports battery backup data retention at 2.0 V minimum supply voltage (VDR = 2.0 V). In data retention mode, it draws only 100 µA typical current (ICCDR), preserving stored contents without external regulators or switching circuitry-ideal for systems requiring nonvolatile state holdover during main power loss.

How does the M/S pin configure master/slave behavior in multi-device systems?

When M/S = HIGH, the 7024L15PF8 operates as a master: BUSYL and BUSYR become push-pull outputs that assert during port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs, allowing external BUSY signals from a master device to gate local write operations-enabling seamless 32-bit+ bus expansion using IDT's MASTER/SLAVE cascading architecture.

Can the 7024L15PF8 perform simultaneous reads from both ports to the same memory address?

Yes-the 7024L15PF8 uses true dual-port memory cells that allow completely independent, simultaneous reads from both left and right ports to identical addresses (e.g., A0L–A11L = A0R–A11R). No arbitration delay, BUSY assertion, or timing penalty occurs during such concurrent reads, ensuring deterministic latency for mirrored data access.

What is the function of the SEM pin, and how are the eight semaphore flags accessed?

The SEM pin enables hardware semaphore register access. When SEM = LOW and CE = HIGH (or UB & LB = HIGH), the device enters semaphore mode: address bits A0–A2 select one of eight semaphore flags, and I/O0 carries the flag bit (write) or all I/O0–I/O15 reflect the flag state (read). This provides atomic, lock-free inter-processor synchronization without software overhead.