ATxmega128D4 Atmel Corporation, ATxmega128D4 Datasheet - Page 238

• 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

20.12.6
20.12.7
20.12.8
8210B–AVR–04/10
INTFLAGS - ADC Interrupt Flag register
TEMP - ADC Temporary register
CALL - ADC Calibration value registers
Table 20-4.
• Bits 7:1 - 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.
• Bits 0 - CH0IF: Interrupt flags
This flag is set when the ADC conversion is complete. If the ADC is configured for compare
mode, the interrupt flag will be set if the compare condition is met. CH0IF is automatically
cleared when the ADC interrupt vector is executed. The flag can also be cleared by writing a one
to its bit location.
• Bits 7:0 - TEMP[7:0]: ADC Temporary Register
This register is used when reading 16-bit registers in the ADC controller. The high byte of the 16-
bit register is stored here when the low byte read by the CPU. This register can also be read and
written from the user software.
For more details on 16-bit register access refer to
The CALL and CALH register pair hold the 12-bit value ADC calibration value CAL. The ADC is
calibrated during production programming, the calibration value must be read from the signature
row and written to the CAL register from in order to get best possible accuracy.
• Bits 7:0 - CAL[7:0]: ADC Calibration value
This is the 8 LSB of the 12-bit CAL value.
Bit
+0x06
Read/Write
Initial Value
Bit
+0x07
Read/Write
Initial Value
Bit
+0x0C
Read/Write
Initial Value
101
110
111
R/W
R
7
–
0
7
0
ADC Prescaler settings
R/W
7
0
R/W
R
6
–
0
6
0
R/W
6
0
R/W
R
5
–
0
5
0
R/W
5
0
DIV128
DIV256
DIV512
R/W
R
4
–
0
4
0
R/W
4
0
TEMP[7:0]
CAL[7:0]
”Accessing 16-bits Registers” on page
R/W
3
–
R
0
R/W
3
0
3
0
R/W
R/W
2
–
R
0
2
0
2
0
R/W
R/W
R
1
–
0
1
0
1
0
128
256
512
XMEGA D
CH0IF
R/W
R/W
R/W
0
0
0
0
0
0
INTFLAGS
12.
TEMP
CAL
238