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应用功能：全速/低速USB微控制器与ADC和脉宽调制 The Atmel AT43USB351M is a USB AVR-based microcontroller that is configurable as a low-speed or full-speed USB device. Its program memory is a 24-Kbyte mask programmable ROM and its data memory is 1-Kbyte SRAM. The on-chip peripherals consists of 19 general-purpose I/O ports, two timer-counters, SPI serial interface, a PWM and a 10-bit AD converter with 12 input channels.
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