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ST72682R20 Datasheet(PDF) 6 Page - STMicroelectronics |
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ST72682R20 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 36 page 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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