USB-Disk Module

AP-UMxxxxXXXXG-XXXX

1. General Description

Apacer’s USB-Disk Module (UDM) is a high performance, embedded solid state drive (SSD) designed to replace a conventional IDE hard disk drive. UDM SSD can be plugged into a standard Embedded USB connector commonly found in desktops, portable PC systems and industrial PC systems. This product is well suited for embedded flash storage applications offering new and expanded functionality as well as more cost-effective designs, better performance and increased reliability.

1.1 Performance-optimized Controller

The heart of an UDM is the USB controller, which translates standard USB signals into the data and controls of the flash media. This proprietary USB controller is specifically designed to attain high data throughput from host to flash.

1.1.1 Power Management Unit (PMU)

The power management unit (PMU) controls the power consumption of the UDM. It can dramatically extend product battery life by leaving the idle part of the circuitry into sleep mode. The PMU has zero wake-up latency.

1.1.2 SRAM Buffer

The SRAM buffer is a key contributor to the USB controller performance. It optimizes data writes to the flash.

1.1.3 Error Correction Code (ECC)

The UDM uses BCH Error Detection Code (EDC) and Error Correction Code (ECC) algorithms which correct up to four random single-bit errors for each 512-byte block of data. High performance is achieved through hardware-based error detection and correction.

1.1.4 Wear-Leveling

Flash memory can be erased a limited number of times, This number is called the erase cycle limit, or write endurance limit, The erase cycle limit applies to each individual erase block in the flash device.

In a typical application, and especially if a file system is used, specific pages are constantly updated (e.g., the page that contains the FAT, registry, etc.). Without any special handling, these pages would wear out more rapidly than other pages, reducing the lifetime of the entire flash.

To overcome this inherent deficiency, Apacer’s USB-Disk Module (UDM) uses wear-leveling algorithm. This wear-leveling algorithm ensures that consecutive writes of a specific sector are not written physically to the same page in the flash. This spreads flash media usage evenly across all pages, thereby maximizing flash lifetime.

The wear-leveling mechanism provides more than 100,000 write/erase cycles for reliable data storage over an extended period.

1.1.5 Write Protection Mode (Optional)

When the device is configured to the Write-Protection mode, it enhances the data security and protection. This feature prevents the stored data from inadvertent system writes or erases, and viruses.

 

4

© 2008 Apacer Technology, Inc.

Rev. 1.0

Page 3 Page 5
Page 4
Image 4
Apacer Technology II manual General Description, Performance-optimized Controller
Page 3 Page 5

II specifications

Apacer Technology Inc. is a leading provider of high-performance memory and storage solutions, well-regarded for its innovative approach and cutting-edge technology. Founded in 1997, Apacer has carved out a significant niche in the global market, specializing in memory modules, Flash-based storage devices, and a variety of related products. Its commitment to quality and performance has established Apacer as a trusted partner for businesses and consumers alike.

One of Apacer's standout features is its extensive range of memory modules, which include DRAM products designed for the latest computing systems. These memory solutions are optimized for speed and efficiency, making them ideal for gaming, professional workstations, and server applications. With a focus on high-capacity memory ranging from DDR4 to DDR5, Apacer meets the demands of modern high-performance computing environments.

In addition to DRAM modules, Apacer is renowned for its state-of-the-art storage solutions. The company offers a variety of solid-state drives (SSDs) that leverage advanced 3D NAND technology, ensuring faster read and write speeds, greater durability, and improved energy efficiency. Apacer's SSDs are designed for both consumer and enterprise applications, providing essential speed enhancements for data-intensive tasks.

Another key characteristic of Apacer Technology is its commitment to innovation in industrial and embedded storage solutions. The company specializes in ruggedized products that can withstand extreme environmental conditions, making them suitable for applications in automotive, aerospace, and medical industries. With features such as enhanced data integrity, data security, and extended temperature ranges, Apacer's industrial solutions are built to perform in demanding environments.

Apacer’s dedication to quality is reflected in its rigorous testing protocols that all products undergo before reaching the market. The company’s products often come with module-level testing and certification, ensuring that every unit meets the highest standards of reliability and performance.

Furthermore, Apacer is at the forefront of adopting emerging technologies such as PCIe Gen4 and NVMe, enabling significantly faster data transfer rates compared to traditional interfaces. This forward-thinking approach allows users to optimize their systems for maximum performance, particularly in sectors requiring quick data access and real-time processing.

In summary, Apacer Technology Inc. distinguishes itself through a combination of high-performance memory modules, innovative SSD solutions, and ruggedized industrial products. With a strong commitment to quality and a forward-looking stance on technology, Apacer continues to lead the way in memory and storage solutions, catering to an increasingly demanding digital landscape.
Top Page Image Contents