參數(shù)資料
型號(hào)： DRM061
英文描述： USB Thumb Drive
中文描述： USB拇指驅(qū)動(dòng)器
文件頁(yè)數(shù)： 13/26頁(yè)
文件大?。?/td> 485K
代理商： DRM061
USB Thumb Drive Designer Reference Manual, Rev. 0
Freescale Semiconductor
13
Chapter 3
Hardware
3.1 Introduction
The UF32 has 32K-bytes of Flash memory, 30MHz bus speed, a Smart Media (hereafter referred as SM)
module and appropriate number of I/O pins makes this MCU suited for thumb drive solutions. The main
features of the reference design include:
USB interface
480Mbps data transfer rate
LED display
3.2 System Overview
The thumb drive consists of the UF32, the NAND Flash.
Figure 3-1
shows the block diagram of the system
Figure 3-1. Thumb Drive Block Diagram
3.2.1 UF32 Microcontroller
The functions of the UF32 are to get the USB Mass Storage (hereafter referred as MS) command from
PC via USB 2.0 interface and decodes them for MS read/write.
3.2.2 NAND Flash
The TC58DVG02A1 is a single 3.3 V 1-Gbit (1,107,296,256) bit NAND Electrically Erasable and
Programmable Read-Only Memory (NAND E2PROM), organized as 528 bytes, 32 pages, and 8192
blocks. The device has a 528-byte static register which allows program and read data to be transferred
between the register and the memory cell array in 528-byte increments. The erase operation is
implemented in a single block unit (16K-bytes 512 bytes: 528 bytes 32 pages). The TC58DVG02A1 is a
serial-type memory device which utilizes the I/O pins for both address and data input/output as well as for
command inputs. The erase and program operations are automatically executed making the device most
suitable for applications such as solid-state file storage, voice recording, image file memory for still
cameras and other systems which require high-density non-volatile memory data storage.
9S12UF32
Interface
Interface
Flash Memory
USB2.0
SmartMedia
NAND
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