ST72682 STMicroelectronics, ST72682 Datasheet - Page 6

• Manufacturer Part Number: ST72682
• Description: USB 2.0 high-speed Flash drive controller
• Manufacturer: STMicroelectronics

Introduction
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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.
12 MHz
3.3 V to 1.8 V
USB 2.0 USB 2.0
Device block diagram
OSC
PHY
regulator
voltage
Function
8-bit
CPU
Controller
Interface
Storage
ROM
Mass
GPIO
Correction
Solomon
Reed-
Error
RAM
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NAND
I/F
ST72682