ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 340

• Manufacturer Part Number: ATxmega128B1
• Manufacturer: Atmel Corporation

Specifications of ATxmega128B1

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 53
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Segment Lcd: 160
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• 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: 3
• Output Compare Channels: 10
• Input Capture Channels: 10
• Pwm Channels: 10
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

25.15.6
25.15.7
25.15.8
25.15.9
8291A–AVR–10/11
INTFLAGS – Interrupt Flag register
TEMP – Temporary register
CALL – Calibration Value register
CALH – Calibration Value register
• Bit 7:1 – 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.
• Bit 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.
• Bit 7:0 – TEMP[7:0]: 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 is 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 calibration value. The ADC pipeline is cali-
brated during production programming, and the calibration value must be read from the
signature row and written to the CAL register from software.
• Bit 7:0 – CAL[7:0]: ADC Calibration value
These are the eight lsbs of the 12-bit CAL value.
Bit
+0x06
Read/Write
Initial Value
Bit
+0x07
Read/Write
Initial Value
Bit
+0x0C
Read/Write
Initial Value
Bit
+0x0D
Read/Write
Initial Value
R/W
R
7
–
0
7
0
R/W
R/W
7
0
7
–
0
R/W
R
6
–
0
6
0
R/W
R/W
6
0
6
–
0
R/W
R
5
–
0
5
0
R/W
R/W
5
0
5
–
0
R/W
R
4
–
0
4
0
R/W
R/W
4
0
4
–
0
TEMP[7:0]
CAL[7:0]
”Accessing 16-bit Registers” on page
R/W
3
–
R
0
R/W
R/W
3
0
3
0
3
0
Atmel AVR XMEGA B
R/W
R/W
R/W
2
–
R
0
2
0
2
0
2
0
CAL[11:8]
R/W
R/W
R/W
R
1
–
0
1
0
1
0
1
0
CH0IF
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
INTFLAGS
11.
TEMP
CALH
CALL
340