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SAM3A Datasheet(PDF) 7 Page - ATMEL Corporation |
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SAM3A Datasheet(HTML) 7 Page - ATMEL Corporation |
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7 / 71 page  9 11057BS–ATARM–13-Jul-12 SAM3X/A 9 11057BS–ATARM–13-Jul-12 SAM3X/A 3. Signal Description Table 3-1 gives details on the signal names classified by peripheral. Table 3-1. Signal Description List Signal Name Function Type Active Level Voltage Reference Comments Power Supplies VDDIO Peripherals I/O Lines Power Supply Power 1.62V to 3.6V VDDUTMI USB UTMI+ Interface Power Supply Power 3.0V to 3.6V VDDOUT Voltage Regulator Output Power VDDIN Voltage Regulator, ADC and DAC Power Supply Power GNDUTMI USB UTMI+ Interface Ground Ground VDDBU Backup I/O Lines Power Supply Power 1.62V to 3.6V GNDBU Backup Ground Ground VDDPLL PLL A, UPLL and Oscillator Power Supply Power 1.62 V to 1.95V GNDPLL PLL A, UPLL and Oscillator Ground Ground VDDANA ADC and DAC Analog Power Supply Power 2.0V to 3.6V GNDANA ADC and DAC Analog Ground Ground VDDCORE Core Chip Power Supply Power 1.62V to 1.95V GND Ground Ground Clocks, Oscillators and PLLs XIN Main Oscillator Input Input VDDPLL XOUT Main Oscillator Output Output XIN32 Slow Clock Oscillator Input Input VDDBU XOUT32 Slow Clock Oscillator Output Output VBG Bias Voltage Reference Analog PCK0 - PCK2 Programmable Clock Output Output Shutdown, Wakeup Logic SHDN Shut-Down Control Output VDDBU 0: The device is in backup mode 1: The device is running (not in backup mode) FWUP Force Wake-up Input Input VDDBU Needs external Pull- up |
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