The CY7C028V-15AXI is a 1-Mbit (64K x 16/18) asynchronous dual-port static RAM manufactured by Cypress Semiconductor, designed for shared-memory architectures requiring simultaneous access from multiple processors or buses. Operating from a single 3.3 V supply, this device offers a 15 ns access time and symmetrical independent ports with separate control, address, and I/O pins, enabling fully asynchronous operations without wait states in many systems. The memory array can be configured as either 64K × 16 or 64K × 18 (with parity) via input pins, and each port supports byte-write capability. Housed in a 100-pin TQFP package, the CY7C028V-15AXI is specified for industrial temperature range (–40°C to +85°C), making it suitable for embedded systems deployed in harsh environments.
Typical applications include industrial process control, test and measurement instrumentation, avionics systems, and defense electronics where dual-port RAMs serve as high-speed interprocessor communication buffers, video frame buffers, or data bridges between FPGAs, DSPs, and microcontrollers. The device’s asynchronous nature and fast access time allow it to simplify timing in legacy system upgrades and new designs that require deterministic shared memory access. Procurement engineers should note that Cypress (now part of Infineon Technologies) has a history of long-lifetime support for memory products, but it is advisable to verify current lifecycle status and availability for long-term programs, especially given ongoing semiconductor supply chain dynamics. The industrial-grade ‘XI’ suffix ensures operation over extended temperature ranges without the cost premium of full military-qualified components.
| Attribute | Value |
|---|---|
| Memory Type | Volatile |
| Memory Format | SRAM |
| Technology | SRAM - Dual Port, Asynchronous |
| Memory Size | 1Mbit |
| Memory Organization | 64K x 16 |
| Memory Interface | Parallel |
| Write Cycle Time - Word, Page | 15ns |
| Access Time | 15 ns |
| Voltage - Supply | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 100-LQFP |
| Supplier Device Package | 100-TQFP (14x14) |
| Product Type | 3.3V 64K × 16 dual-port static RAM (True Dual-Port SRAM) |
| Series | CY7C028V |
| Operating Supply Current | ICC 195 mA max (-15 grade, Industrial; Commercial 185 mA); ISB3 250 µA (both ports at CMOS levels) |
| Operating Supply Voltage | 3.3V ± 300 mV |
| Supply Voltage - Max | 3.6 V |
| Supply Voltage - Min | 3.0 V |
| Maximum Operating Temperature | +85 °C |
| Minimum Operating Temperature | -40 °C |
| Organization | 64K × 16 |
| Number of Channels | 2 (two fully independent left/right ports, on-chip arbitration + semaphores) |
Download the current available datasheet for CY7C028V-15AXI.
Download Datasheet 
