ATxmega128D4 Atmel Corporation, ATxmega128D4 Datasheet - Page 240

• Manufacturer Part Number: ATxmega128D4
• Manufacturer: Atmel Corporation

Specifications of ATxmega128D4

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• 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): 8
• Eeprom (bytes): 2048
• 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

20.12.11 CH0RESL - ADC Channel Result register Low
20.12.11.1
20.12.11.2
20.12.12 CMPH - ADC Compare register High
20.12.13 CMPL - ADC Compare register Low
8210B–AVR–04/10
12-/8-bit mode
12-bit mode, left adjusted
• Bits 7:0 - CHRES[7:0]: ADC Channel Result, low byte
These are the 8 LSB of the ADC result.
• Bits 7:4 - CHRES[3:0]: ADC Channel Result, low byte
These are the 4 LSB of the 12 bit ADC result.
• Bits 3:0 - Reserved
These bits are reserved and will always read as zero. For compatibility reasons always write
these bits to zero when this register is written.
The CMPH and CMPL register pair represents the 16-bit value ADC Compare (CMP). For
details on reading and writing 16-bit registers refer to
• Bits 7:0 - CMP[15:0]: ADC Compare value high byte
These are the 8 MSB of the 16-bit ADC compare value. In signed mode, the number representa-
tion is 2's complement and the MSB is the sign bit.
• Bits 7:0 - CMP[7:0]: ADC compare value high byte
These are the 8 LSB of the 16-bit ADC compare value. In signed mode, the number representa-
tion is 2's complement.
12-/8-
12-bit, left
Bit
+0x18
Read/Write
Initial Value
Bit
+0x19
Read/Write
Initial Value
Bit
Read/Write
Initial Value
R/W
R/W
7
0
7
0
R/W
R/W
6
0
6
0
R
7
0
R/W
R/W
5
0
5
0
R
6
0
CHRES[3:0]
R/W
R/W
4
0
4
0
R
5
0
CMP[15:0]
CMP[7:0]
R/W
R/W
3
0
3
0
”Accessing 16-bits Registers” on page
R
4
0
CHRES[7:0]
R/W
R/W
2
0
2
0
R
3
–
0
R/W
R/W
1
0
1
0
R
2
–
0
XMEGA D
R/W
R/W
0
0
R
0
0
1
–
0
CMPH
CMPL
R
0
–
0
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12.