ATxmega16D4 Atmel Corporation, ATxmega16D4 Datasheet - Page 242

• Manufacturer Part Number: ATxmega16D4
• Manufacturer: Atmel Corporation

Specifications of ATxmega16D4

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Speed: No
• Usb Interface: No
• Spi: 4
• Twi (i2c): 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 200
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 14
• Input Capture Channels: 14
• Pwm Channels: 14
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

20.13.2
8210B–AVR–04/10
MUXCTRL - ADC Channel MUX Control registers
Table 20-6.
Table 20-7.
The MUX register defines the input source for the channel.
• Bit 7 - Reserved
This bit is unused and reserved for future use. For compatibility reasons always write this bit to
zero when this register is written.
• Bits 6:3 - MUXPOS[3:0]: MUX selection on Positive ADC input
These bits define the MUX selection for the positive ADC input.
Table 20-9 on page 243
Table 20-8.
Bit
+0x01
Read/Write
Initial Value
INPUTMODE[1:0]
INPUTMODE[1:0]
MUXPOS[2:0]
00
01
10
11
00
01
10
11
000
001
010
011
100
101
110
111
Input Modes, CONVMODE=0 (unsigned mode)
Input Modes, CONVMODE=1 (signed mode)
ADC MUXPOS Configuration when INPUTMODE[1:0] = 00 (Internal) is used
R
7
–
0
shows the possible input selection for the different input modes.
R/W
6
0
Group Configuration
Group Configuration
Group Configuration
SINGLEENDED
SINGLEENDED
SCALEDVCC
DIFFWGAIN
INTERNAL
BANDGAP
INTERNAL
TEMP
R/W
DIFF
5
0
MUXPOS[3:0]
R/W
4
0
R/W
Description
Internal positive input signal
Single-ended positive input signal
Reserved
Reserved
Description
Internal positive input signal
Single-ended positive input signal
Differential input signal
Differential input signal with gain
3
0
Temperature Reference.
R
2
–
0
Bandgap voltage
1/10 scaled V
Analog input
Table 20-8 on page 242
Reserved
Reserved
Reserved
Reserved
Reserved
R/W
1
0
MUXNEG[1:0]
XMEGA D
CC
R/W
0
0
MUXCTRL
and
242