SAM3U Datasheet, PDF (51/59 Pages) ATMEL Corporation – AT91SAM ARM-based Flash MCU

SAM3U Series
12.10 Analog-to-Digital Converter (ADC)
Two ADCs are embedded in the product.
12.10.1
12-bit High Speed ADC
• 8-channel ADC
• 12-bit 1 Msamples/sec. Cyclic Pipeline ADC
• Integrated 8-to-1 multiplexer
• 12-bit resolution
• Selectable single ended or differential input voltage
• Programmable gain for maximum full scale input range
• External voltage reference for better accuracy on low voltage inputs
• Individual enable and disable of each channel
• Multiple trigger sources
– Hardware or software trigger
– External trigger pin
– Timer Counter 0 to 2 outputs TIOA0 to TIOA2 trigger
– PWM trigger
• Sleep Mode and conversion sequencer
– Automatic wakeup on trigger and back to sleep mode after conversions of all
enabled channels
12.10.2
10-bit Low Power ADC
• 8-channel ADC
• 10-bit 384 Ksamples/sec. or 8-bit 533 Ksamples/sec. Successive Approximation Register
ADC
• -2/+2 LSB Integral Non Linearity, -1/+1 LSB Differential Non Linearity
• Integrated 8-to-1 multiplexer
• External voltage reference for better accuracy on low voltage inputs
• Individual enable and disable of each channel
• Multiple trigger sources
– Hardware or software trigger
– External trigger pin
– Timer Counter 0 to 2 outputs TIOA0 to TIOA2 trigger
– PWM trigger
• Sleep Mode and conversion sequencer
– Automatic wakeup on trigger and back to sleep mode after conversions of all
enabled channels
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6430ES–ATARM–22-Aug-11