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PDF EKF5250 Data sheet ( Hoja de datos )
| Número de pieza | EKF5250 | |
| Descripción | USB full speed NAND flash controller | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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eKF5250
USB full speed NAND flash controller
Preliminary
SPECIFICATION
1. General Description
The eKF5250 provides a high-performance interface to bridge USB and NAND Flash
compliance device which can be used to implement of flash memory storage device with USB
interface. It contains a 8-bit RISC processor to greatly reduce firmware development work.
The eKF5250 has a phase Lock Loop(PLL) embedded. The PLL provided all clocks needed
in this Controller. It needs an externally provided clock operating in 2 Mhz.
The eKF5250 can control up to 4 pieces of NAND Flash memory. The flash capacity can be
16M bytes up to 256M bytes. And these chips can be any combination. It has been optimized to
support Toshiba and Samsung flash memory designs. The controller has write-protected ability
to prevent writing data to flash. For read/write operation, the controller can achieve 1000KB
/800KB throughput.
This controller can operate in Win XP, Win2000, Windows ME without any driver
installation.
2. Features
• USB Specification v1.1 Compliant
• USB Mass Storage Class v1.0 Compliant
• Support 12 Mbits/s Full Speed Serial Data Transmission
• Support USB Mass Storage Class Bulk-Only Spec.
• USB bus-powered capability
• Build in PLL used to generate clock for USB. And MCU.
• Total 3 Endpoints. Endpoint 0 is the default control endpoint. Endpoint 1 is the
Bulk-in endpoint. Endpoint 2 is the Bulk-out endpoint.
• 4K x 13 on chip ROM(Program).
• Support wear leveling
• Support write-protected ability.
• Higher reliability : ECC on the fly
• Support ping-pong buffer(Two 536x8 bits) for data transfer to/from NAND Flash
• Support 4 pieces of NAND Flash.memory
• 8 Level stack for subroutine nesting.
• 1 LED sink pin with internal serial resistor.
• One 8 bits general purpose timer.
• Watchdog Timer with its own on-chip RC oscillator
This specification may change without further notice.
02, 12, 2003
1
1 page  
6. Block Diagram
5V
eKF5250
USB full speed NAND flash controller
Preliminary
2 MHz
Crystal
Host
Regulator
3.3V
LUT
USB Core
PLL
USB I/F
MCU
DMA(Buf)
ECC
Flash I/F
Flash 0
Flash 1 Flash 2 Flash 3
This specification may change without further notice.
02, 12, 2003
5
5 Page 
eKF5250
USB full speed NAND flash controller
Preliminary
© 2002 ELAN Microelectronics Corporation
All Rights Reserved
Printed in Taiwan, ROC, 05/2002
The contents of this specification are subject to change without notice. ELAN Microelectronics assumes no
responsibility for errors that may appear in this specification. ELAN Microelectronics makes no commitment
to update, or to keep current, the information contained in this specification. The products described herein
are not intended for use in life support appliances, devices, or systems. Use of ELAN Microelectronics
products in such applications are not supported and is prohibited.
NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR BY
ANY MEANS WITHOUT THE EXPRESS WRITTEN PERMISSION OF ELAN MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters:
No. 12, Innovation Road 1,
Science-based Industrial Park,
Hsinchu, Taiwan, R.O.C.
Tel: +886 3 5639977
Fax:+886 3 5639966
http://www.emc.com.tw
Hong Kong Office:
Rm. 1005B, 10/F Empire Centre
68 Mody Road, Tsimshatsui
Kowloon , HONG KONG
Tel: +852 2838-8715
Fax: +852 2838-0497
This specification may change without further notice.
02, 12, 2003 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EKF5250.PDF ] | |
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