ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 303
ATAVRDISPLAYX
Manufacturer Part Number
ATAVRDISPLAYX
Description
KIT EVAL XMEGA DISPLAY
Manufacturer
Atmel
Specifications of ATAVRDISPLAYX
Main Purpose
*
Embedded
*
Utilized Ic / Part
*
Primary Attributes
*
Secondary Attributes
*
Silicon Manufacturer
Atmel
Silicon Family Name
ATxmega
Kit Contents
Board
Features
Temperature Sensor, Mono Speaker Via Audio Amplifier
Svhc
No SVHC (15-Dec-2010)
Core Architecture
AVR
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
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25.16.3
8077H–AVR–12/09
REFCTRL - ADC Reference Control register
• Bit 4 - CONVMODE: ADC Conversion Mode
This bit controls whether the ADC should work in signed or unsigned mode. By default this bit is
zero and the ADC is then configured for unsigned mode where single ended and internal signals
can be measured. When this bit is set to one the ADC is configured for signed mode where also
differential input can be used.
• Bit 3 - FREERUN: ADC Free Running Mode
This bit controls the free running mode for the ADC. When the bit is set to one the ADC channels
defined in the EVCTRL register are swept repeatedly.
• Bits 2:1 - RESOLUTION[1:0]: ADC Conversion Result Resolution
These bits define whether the ADC completes the conversion at 12- or 8-bit result. They also
define whether the 12-bit result is left or right oriented in the 16-bit result registers. See
25-2 on page 303
Table 25-2.
• Bit 0 - Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write
this bit to zero when this register is written.
Note:
• Bit 7:6 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bits 6:4 – REFSEL[1:0]: ADC Reference Selection
These bits selects the reference and conversion range for the ADC according to
page
Bit
+0x02
Read/Write
Initial Value
RESOLUTION[1:0]
304.
1. Refer to datasheet for limitations on reference voltage.
00
01
10
11
R
7
0
-
ADC Conversion Result resolution
for possible settings.
R
6
0
-
Group Configuration
(1)
R/W
LEFT12BIT
5
0
REFSEL[1:0]
12BIT
8BIT
R/W
4
0
R
3
0
-
Description
12-bit result, right adjusted
Reserved
8-bit result, right adjusted
12-bit result, left adjusted
R
2
0
-
BANDGAP
R/W
1
0
XMEGA A
TEMPREF
R/W
0
0
Table 25-3 on
REFCTRL
Table
303
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