ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 344

• 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

8291A–AVR–10/11
• Bit 7 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write
this bit to zero when this register is written.
• Bit 6:3 – MUXPOS[3:0]: MUX Selection on Positive ADC Input
These bits define the MUX selection for the positive ADC input.
Table 25-11 on page 344
Table 25-10. ADC MUXPOS configuration when INPUTMODE[1:0] = 00 (internal) is used.
Table 25-11. ADC MUXPOS configuration when INPUTMODE[1:0] = 01 (single-ended),
Depending on the device pin count and feature configuration, the actual number of analog input
pins may be less than 16. Refer to the device datasheet and pin-out description for details.
• Bit 2:0 – MUXNEG[2:0]: MUX Selection on Negative ADC Input
These bits define the MUX selection for the negative ADC input when differential measurements
are done. For internal or single-ended measurements, these bits are not used.
MUXPOS[3:0]
MUXPOS[3:0]
0100-1111
0000
0001
0010
0011
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
INPUTMODE[1:0] = 10 (differential) or INPUTPMODE[1:0] = 1 (differential with
gain) is used.
Group Configuration
TEMP
BANDGAP
SCALEDVCC
Group Configuration
PIN0
PIN1
PIN2
PIN3
PIN4
PIN5
PIN6
PIN7
PIN8
PIN9
PIN10
PIN11
PIN12
PIN13
PIN14
PIN15
show the possible input selection for the different input modes.
Description
Temperature reference
Bandgap voltage
1/10 scaled V
Reserved
Reserved
Description
ADC0 pin
ADC1 pin
ADC2 pin
ADC3 pin
ADC4 pin
ADC5 pin
ADC6 pin
ADC7 pin
ADC8 pin
ADC9 pin
ADC10 pin
ADC11 pin
ADC12 pin
ADC13 pin
ADC14 pin
ADC15 pin
Atmel AVR XMEGA B
CC
Table 25-10 on page 344
and
344