AP-UM004GE40CG datasheet, PDF - EEWORLD Datasheet

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AP-UM004GE40CG: DescriptionMemory module udm (slc) 4gb; Categorysemiconductor Other integrated circuit (IC); File Size419KB，21 Pages; ManufacturerApacer; Environmental Compliance

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AP-UM004GE40CG Overview

Memory module udm (slc) 4gb

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USB-Disk Module

Ⅱ

AP-UMxxxxXXXXG-XXXX

RoHS Compliant

USB-Disk Module

Ⅱ

Specification

April 23, 2009

Version 1.5

Apacer Technology Inc.

4 Fl., 75 Xintai 5 Rd., Sec.1, Hsichih, Taipei Hsien 221, Taiwan

Tel: +886-2-2698-2888

www.apacer.com

Fax: +886-2-2698-2889

Rev.

1.5

USB-Disk Module

Ⅱ

AP-UMxxxxXXXXG-XXXX

TABLE OF CONTENTS

1. General Description ..............................................................................4

1.1 Performance-optimized Controller....................................................................................................... 4

1.1.1 Power Management Unit (PMU) ...................................................................................................................4

1.1.2 SRAM Buffer .................................................................................................................................................4

1.1.3 Error Correction Code (ECC) ........................................................................................................................4

1.1.4 Wear-Leveling ...............................................................................................................................................4

1.1.5 Write Protection Mode (Optional) ..................................................................................................................4

2. Functional Block Diagram.....................................................................5

3. Pin Assignment......................................................................................6

3.1 Type A, Type B, Type C, and Type E.................................................................................................. 6

3.2 Type D﹙STD﹚................................................................................................................................... 7

3.3 Type D﹙LP﹚ ..................................................................................................................................... 8

4. Capacity Specifications ........................................................................9

4.1 Functional Specifications..................................................................................................................... 9

4.2 Environmental Specifications .............................................................................................................. 9

5. Electrical Specification ......................................................................10

6. Physical Dimension .............................................................................11

6.1 Horizontal Design .............................................................................................................................. 11

6.1.1 Type A (STD 90D)......................................................................................................................................11

6.1.2 Type B (STD 90D-MH) ...............................................................................................................................12

6.1.3 Type C (STD 90D-MS) ...............................................................................................................................13

6.2 Vertical Design .................................................................................................................................. 14

6.2.1 Type D (STD 180D)....................................................................................................................................14

6.3 Low Profile Design............................................................................................................................. 15

6.3.1 Type D (LP 180D) .......................................................................................................................................15

6.3.2 Type E (LP 90D-MS) ...................................................................................................................................16

7. Product Ordering Information.............................................................17

7.1 Product Code Designation ................................................................................................................ 17

7.2 Valid Combinations............................................................................................................................ 18

7.2.1 Type A

7.2.2 Type B

7.2.3 Type C

7.2.4 Type D

7.2.5 Type D

7.2.6 Type E

(STD 90D)......................................................................................................................................18

(STD 90D-MH) ...............................................................................................................................18

(STD 90D-MS) ...............................................................................................................................18

(STD 180D)....................................................................................................................................19

(LP 180D) ......................................................................................................................................19

(LP 90D-MS) ..................................................................................................................................19

Rev.

1.5

USB-Disk Module

Ⅱ

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 6/12 random single-bit errors for each 512-byte block of data depending on spare area of

flash memory. 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.

Rev.

1.5

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