SAM3S8B Atmel Corporation, SAM3S8B Datasheet - Page 1047

• Manufacturer Part Number: SAM3S8B
• Manufacturer: Atmel Corporation

39.4
Table 39-1.
39.5
39.5.1
39.5.2
39.5.3
39.6
39.6.1
39.6.2
39.6.3
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
Pin Name
DAC0 - DAC1
DATRG
Signal Description
Product Dependencies
Functional Description
Power Management
Interrupt Sources
Conversion Performances
Digital-to-Analog Conversion
Conversion Results
Conversion Triggers
DACC Pin Description
The DACC becomes active as soon as a conversion is requested and at least one channel is
enabled. The DACC is automatically deactivated when no channels are enabled.
For power saving options see
The DACC interrupt line is connected on one of the internal sources of the interrupt controller.
Using the DACC interrupt requires the interrupt controller to be programmed first.
Table 39-2.
For performance and electrical characteristics of the DACC, see the product DC Characteristics
section.
The DACC uses the master clock (MCK) divided by two to perform conversions. This clock is
named DACC Clock. Once a conversion starts the DACC takes
analog result on the selected analog output.
When a conversion is completed, the resulting analog value is available at the selected DACC
channel output and the EOC bit in the
Reading the DACC_ISR register clears the EOC bit.
In free running mode, conversion starts as soon as at least one channel is enabled and data is
written in the
data is available at the corresponding analog output as stated above.
In external trigger mode, the conversion waits for a rising edge on the selected trigger to begin.
Warning: Disabling the external trigger mode automatically sets the DACC in free running
mode.
Instance
DACC
DACC Conversion Data
Peripheral IDs
Description
Analog output channels
External triggers
30
ID
Section 39.6.6 ”Sleep
Register, then 25 DACC Clock periods later, the converted
DACC Interrupt Status
Mode”.
Register, is set.
25
clock periods to provide the
SAM3S8/SD8
SAM3S8/SD8
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