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ST72682R21 Datasheet(PDF) 6 Page - STMicroelectronics

No. de pieza ST72682R21
Descripción Electrónicos  USB 2.0 high-speed Flash drive controller
Download  36 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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ST72682R21 Datasheet(HTML) 6 Page - STMicroelectronics

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Introduction
ST72682
6/36
1
Introduction
The ST72682 is a USB 2.0 high-speed Flash drive controller. The USB 2.0 high-speed
interface includes PHY and function and supports USB 2.0 mass storage device class.
The Mass storage controller interface (MSCI), combined with the Reed-Solomon
encoder/decoder on-the-fly correction (4 bytes on 512-byte data blocks), provides a flexible
high transfer rate solution for interfacing a wide of range NAND Flash memory devices.
The internal 60 MHz PLL driven by the 12 MHz oscillator is used to generate the 480 MHz
frequency required for the USB 2.0 PHY.
The ST7 8-bit CPU runs the application program from the internal ROM and RAM. USB data
and patch code are stored in internal RAM.
The I/O ports provide allow to connect EEPROM, LEDs and a write protect switch control.
The internal 3.3 to 1.8 V voltage regulator provides the 1.8 V supply voltage to the digital
part of the circuit.
Figure 1.
Device block diagram
USB 2.0
USB 2.0
Function
Mass
Controller
PHY
Storage
Interface
Reed-
Solomon
Error
Correction
NAND
I/F
8-bit
CPU
ROM
RAM
3.3V to 1.8V
voltage
GPIO
12 MHz
OSC
regulator


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