Infineon Technologies CY7C024-15AXCT

Overview

CY7C024-15AXCT from Cypress Semiconductor is a 4K × 16-bit true dual-port static RAM with independent left/right ports, 15 ns access time, on-chip semaphore logic, and BUSY/INT flags for interprocessor coordination-used in real-time multiprocessor communication buffers and video frame memory subsystems.

For engineers reviewing the CY7C024-15AXCT datasheet, CY7C024-15AXCT pinout, CY7C024-15AXCT application, or CY7C024-15AXCT equivalent, this page delivers verified package mapping (84-pin PLCC), arbitration behavior under contention, byte-select control timing, and master/slave expansion capability without external logic.

Technical Context

The CY7C024-15AXCT implements fully asynchronous dual-port operation with separate CE/R/W/OE controls per port, enabling concurrent read/write access to any memory location. Its on-chip arbitration resolves address-contention events via BUSY assertion with tBLA = 5 ns and tBLC = 8 ns timing windows.

It integrates eight dedicated semaphore latches accessible via SEM pin activation, supporting software-controlled resource locking between ports. The M/S pin configures the device as master (BUSY output) or slave (BUSY input), enabling 32-bit-wide memory expansion using multiple units without discrete glue logic.

Key Specifications

Pinout & Package

Package: 84-pin Plastic Leaded Chip Carrier (PLCC), RoHS-compliant, surface-mountable with J-lead profile and thermal pad compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT70V25L15PF and IS61LV25616AL-15TQLI, the CY7C024-15AXCT uniquely integrates arbitration, semaphores, and master/slave expansion in a 5 V, 4K×16 package-reducing BOM count and firmware complexity in tightly coupled multiprocessor designs.

Availability

CY7C024-15AXCT is available at Aetrix Electronics and suitable for interprocessor communication buffers, dual-port video frame memory, and real-time signal processing interfaces requiring stable component supply across extended lifecycle programs.

Supply support for CY7C024-15AXCT 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability memory and programmable solutions for industrial, automotive, and communications infrastructure.

The CY7C024 series belongs to Cypress's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency interprocessor data exchange in safety-critical and real-time embedded systems.

FAQ

What is the function of the M/S pin on CY7C024-15AXCT?

The M/S pin configures the device as master (M/S = HIGH) or slave (M/S = LOW). In master mode, BUSY pins act as outputs signaling arbitration outcomes; in slave mode, they become inputs synchronized to the master's BUSY output-enabling seamless 32-bit memory expansion without external logic.

How does semaphore access differ from normal memory access?

Semaphore access requires SEM asserted LOW while CE remains HIGH; only A0–A2 select among eight latches, and only I/O0 carries write data. Reads return the full 16-bit latch state. Unlike memory access, semaphore operations bypass the main array and use dedicated internal logic with tSOP = 10 ns setup hold requirements.

Can both ports read the same memory location simultaneously without conflict?

Yes-true dual-port architecture allows simultaneous reads from the same address with no arbitration delay or BUSY assertion. Each port drives its own I/O bus independently, ensuring deterministic data delivery within tACE = 15 ns after CE or tDOE after OE assertion.

What happens when both ports attempt to write to the same address at nearly the same time?

On-chip arbitration asserts BUSY on the losing port within tBLA = 5 ns of address match. The winning port gains immediate access; the losing port must wait until BUSY deasserts before retrying. If tPS < 5 ns is violated, arbitration outcome becomes unpredictable per datasheet specification.