কোম্পানির ব্লগ সম্পর্কে Infineon CYEL18V5123-200BKXE High Bandwidth Pseudostatic RAM Memory For LEO Satellites Applications

Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycles the Infineon CYEL18V5123-200BKXE, a high-bandwidth pseudo-static random-access memory (PSRAM) designed for low Earth orbit (LEO) satellite applications.

I. CYEL18V5123-200BKXE Product Overview

The CYEL18V5123-200BKXE is a radiation-hardened pseudo-static random-access memory (pSRAM / HyperRAM™ 2.0) from Infineon’s NewSpace product line, specifically designed for low Earth orbit (LEO) satellite constellations. It is intended for the development of payloads for commercial space lightweight satellites, nanosatellites and CubeSats. The device utilises an internal DRAM storage architecture and integrates hardware self-refresh logic, presenting a simple serial memory interface to the outside world. It combines the ease of use of SRAM with the high-density advantages of DRAM, precisely addressing the size, weight, power consumption and cost (SWaP-C) constraints of LEO satellite platforms. It can serve as a core component for high-speed data caching, image frame buffering and temporary telemetry data storage in on-board processors.

Addressing the challenges posed by short-duration in-orbit missions for large-scale LEO constellations, the space radiation environment, and limited PCB routing resources on board, the CYEL18V5123-200BKXE, with its eight-channel xSPI (Octal SPI) high-speed interface, wide temperature tolerance and standardised aerospace reliability screening programme, has become the preferred high-speed volatile memory solution for next-generation commercial low-Earth orbit satellite payloads.

II. Key Electrical and Specification Parameters of the CYEL18V5123-200BKXE

Storage capacity: 512 Mbit (64 MB)

Interface type: xSPI (Octal SPI, eight-wire serial)

Clock frequency: 200 MHz DDR, with a peak bandwidth of up to 400 MB/s

Core supply voltage: 1.8 V low-voltage operation

Package Type: PG-BGA-24 (Small 24-ball BGA, compact layout)

Operating Temperature Range: –40 °C to +125 °C, suitable for the temperature fluctuations encountered by satellites in orbit

Radiation Resistance: Guaranteed tolerance of 100 krad (Si) TID (Total Ionising Dose), suitable for radiation levels in LEO orbit

Process Architecture: Built-in self-refresh controller eliminates the need for external DRAM refresh management, reducing the load on the host controller

Quality Specifications: Single Lot Date Code (SLDC), 100% full-parameter electrical testing, Certificate of Conformity (CoC) available; compliant with AEC-Q100 standard and RoHS halogen-free requirements

III. Key Technical Advantages of the CYEL18V5123-200BKXE

1. pSRAM architecture, simplifying on-board system design

Traditional SDRAM/DDR requires a dedicated memory controller, which consumes processor resources and a large number of GPIO pins; the CYEL18V5123-200BKXE integrates an on-chip self-refresh circuit, eliminating the need for software intervention in refresh timing. On-board MCUs and payload SoCs require only a standard xSPI peripheral to drive the device, significantly reducing the number of hardware pins and simplifying PCB routing, making it ideal for small satellite platforms with limited pin resources, such as CubeSats and nanosatellites.

2. High-bandwidth xSPI interface supporting real-time on-board data streams

The 200 MHz DDR eight-channel xSPI interface provides ample throughput, enabling the stable buffering of optical payload imagery, raw sampling data from multispectral sensors, and baseband data streams for inter-satellite communications. This prevents data packet loss in high-speed acquisition scenarios and meets the real-time signal processing requirements of Earth observation satellites and IoT communication satellites.

3. NewSpace radiation-hardened design, adapted to the LEO in-orbit environment

Low Earth Orbit (LEO) is constantly subjected to bombardment by cosmic rays and high-energy particles, which can easily cause data corruption in memory. The CYEL18V5123-200BKXE has undergone batch-level TID radiation qualification testing, withstands typical LEO radiation doses, and is suitable for mainstream commercial LEO satellite mission durations of 2 to 5 years; when combined with on-board software error-correction mechanisms, it effectively enhances in-orbit data reliability.

4. Compact Package + Low Power Consumption, Optimising Satellite SWaP Metrics

The compact 24-ball PG-BGA package effectively reduces the board footprint; the 1.8V power supply architecture reduces dynamic and standby power consumption, alleviating the strain on the satellite’s solar array and energy storage batteries, and facilitating lightweight and compact payload designs, making it suitable for large-scale, mass-deployed LEO satellite constellations.

IV. Typical LEO Satellite Application Scenarios for the CYEL18V5123-200BKXE

Earth observation CubeSat optical payloads: camera image frame caching, temporary storage of raw imagery, and buffering of large-capacity remote sensing data prior to downlink transmission;

On-board communication payloads: caching of telemetry and telecommand data, and buffering of baseband signals for inter-satellite links;

On-board computer (OBC): temporary memory for algorithm execution; intermediate data storage for mission scheduling;

Low-Earth orbit (LEO) IoT communication satellites: caching of terminal access data packets; pre-processing of channel data;

On-board edge computing unit: real-time AI processing in orbit; high-speed buffer for target recognition operations.

V. Summary of CYEL18V5123-200BKXE

With its four core capabilities—512 Mbit high capacity, xSPI high bandwidth, radiation-hardened pSRAM architecture, and a compact, low-power package—the CYEL18V5123-200BKXE precisely aligns with the current trends towards lightweight, mass-produced and low-cost LEO satellite constellations, making it a highly competitive high-speed cache solution for the NewSpace commercial space sector.