Atmel SAM4SD32B Preliminary Data Sheet page 1034

40.3 Block Diagram
Figure 40-1. Analog-to-Digital Converter Block Diagram
ADTRG
ADVREF
AD0
PIO
Analog AD1
Inputs
ADn
GND
40.4 Signal Description
Table 40-1. ADC Pin Description
Pin Name
ADVREF
(1)
AD0 - AD15
ADTRG
Note: 1. AD15 is not an actual pin but is connected to a temperature sensor.
40.5 Product Dependencies
40.5.1 Power Management
40.5.2 Interrupt Sources
SAM4S Series [Preliminary]
1034
Timer
Counter
Channels
ADC 12-Bit Controller
Trigger
Selection
ADC cell
IN+
OFFSET PGA
IN- S/H
Description
Reference voltage
Analog input channels
External trigger
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.
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 40-2. Peripheral IDs
Instance
ADC
Cyclic Pipeline
12-bit Analog-to-Digital
Converter
ID
29
ADC Interrupt Interrupt
Control
Controller
Logic
PDC
User
Interface
CHx
11100B–ATARM–31-Jul-12
AHB
Peripheral Bridge
APB