Atmel SAM4S Series, Preliminary Data Sheet

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1034
11100B–ATARM–31-Jul-12
SAM4S Series [Preliminary]
40.3 Block Diagram
Figure 40-1. Analog-to-Digital Converter Block Diagram
40.4 Signal Description
Note: 1. AD15 is not an actual pin but is connected to a temperature sensor.
40.5 Product Dependencies
40.5.1 Power Management
The ADC Controller is not continuously clocked. The programmer must first enable the ADC
Controller MCK in the Power Management Controller (PMC) before using the ADC Controller.
However, if the application does not require ADC operations, the ADC Controller clock can be
stopped when not needed and restarted when necessary. Configuring the ADC Controller does
not require the ADC Controller clock to be enabled.
40.5.2 Interrupt Sources
The ADC interrupt line is connected on one of the internal sources of the Interrupt Controller.
Using the ADC interrupt requires the interrupt controller to be programmed first.
Table 40-1. ADC Pin Description
Pin Name Description
ADVREF Reference voltage
AD0 - AD 15
(1)
Analog input channels
ADTRG External trigger
ADTRG
ADVREF
GND
Trigger
Selection
Timer
Counter
Channels
AD0
AD1
ADn
Analog
Inputs
ADC Interrupt
ADC 12-Bit Controller
ADC cell
Control
Logic
User
Interface
Interrupt
Controller
Peripheral Bridge
APB
PDC
AHB
IN+
IN-
S/H OFFSET PGA
PIO
Cyclic Pipeline
12-bit Analog-to-Digital
Converter
CHx
Table 40-2. Peripheral IDs
Instance ID
ADC 29