ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 1079

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

42. Analog-to-Digital Converter (ADC)
42.1
42.2
Figure 42-1. Analog-to-Digital Converter Block Diagram
42.3
Table 42-1.
6430D–ATARM–25-Mar-11
Pin Name
AD0 - AD7
ADTRG
Description
Block Diagram
Signal Description
Analog Inputs
with I/O lines
Multiplexed
ADC Pin Description
VDDANA
ADVREF
ADTRG
The ADC is based on a Successive Approximation Register (SAR) 10-bit Analog-to-Digital Con-
verter (ADC). It also integrates an 8-to-1 analog multiplexer, making possible the analog-to-
digital conversions of 8 analog lines. The conversions extend from 0V to ADVREF. The ADC
supports an 8-bit or 10-bit resolution mode, and conversion results are reported in a common
register for all channels, as well as in a channel-dedicated register. Software trigger, external
trigger on rising edge of the ADTRG pin or internal triggers from Timer Counter output(s) or
PWM Event lines are configurable.
The ADC also integrates a Sleep Mode and a conversion sequencer and connects with a PDC
channel. These features reduce both power consumption and processor intervention.
Finally, the user can configure ADC timings, such as Startup Time and Sample & Hold Time.
GND
AD0
AD1
ADn
PIO
Description
Analog input channels
External trigger
Selection
Channels
Trigger
Counter
Timer
Analog-to-Digital
Approximation
ADC cell
Successive
Converter
Register
ADC Controller
Interface
PMC
Control
Logic
User
MCK
ADC Interrupt
PDC
NVIC
SAM3U Series
System Bus
Peripheral Bridge
APB
1079