Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
12
Notes: 1. TDO pin is set in input mode when the Cortex-M3 Core is not in debug mode. Thus the internal pull-up corresponding to this
PIO line must be enabled to avoid current consumption due to floating input.
2. PIOA: Schmitt Trigger on all, except PA0, PA9, PA26, PA29, PA30, PA31
3. PIOB: Schmitt Trigger on all, except PB14 and PB22
Serial Peripheral Interface - SPIx
SPIx_MISO Master In Slave Out I/O
SPIx_MOSI Master Out Slave In I/O
SPIx_SPCK SPI Serial Clock I/O
SPIx_NPCS0 SPI Peripheral Chip Select 0 I/O Low
SPIx_NPCS1–SPIx_NPCS3 SPI Peripheral Chip Select Output Low
Two-Wire Interface - TWIx
TWDx TWIx Two-wire Serial Data I/O
TWCKx TWIx Two-wire Serial Clock I/O
Analog-to-Digital Converter - ADC
AD0–AD14 Analog Inputs Analog
ADTRG ADC Trigger Input
ADVREF ADC and DAC Reference Analog
Digital-to-Analog Converter Controller - DACC
DAC0 DAC channel 0 analog output Analog
DAC1 DAC channel 1 analog output Analog
DATRG DAC Trigger
Fast Flash Programming Interface - FFPI
PGMEN0–PGMEN2 Programming Enabling Input VDDIO
PGMM0–PGMM3 Programming Mode Input VDDIO
PGMD0–PGMD15 Programming Data I/O VDDIO
PGMRDY Programming Ready Output High VDDIO
PGMNVALID Data Direction Output Low VDDIO
PGMNOE Programming Read Input Low VDDIO
PGMCK Programming Clock Input VDDIO
PGMNCMD Programming Command Input Low VDDIO
USB High Speed Device
VBUS
USB Bus Power Measurement Mini
Host/Device
Analog
DFSDM USB Full Speed Data - Analog VDDUTMI
DFSDP USB Full Speed Data + Analog VDDUTMI
DHSDM USB High Speed Data - Analog VDDUTMI
DHSDP USB High Speed Data + Analog VDDUTMI
UOTGVBOF
USB VBus On/Off: Bus Power
Control Port
VDDIO
UOTGID
USB Identification: Mini Connector
Identification Port
VDDIO
Table 3-1. Signal Description List (Continued)
Signal Name Function Type
Active
Level
Voltage
Reference Comments