ATxmega32D4 Atmel Corporation, ATxmega32D4 Datasheet - Page 238
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ATxmega32D4
Manufacturer Part Number
ATxmega32D4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega32D4
Flash (kbytes)
32 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)
4
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
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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