ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 316

• 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

24.5.9
8291A–AVR–10/11
CTRLG – Control Register G
• Bits 7:6 – 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.
• Bits 5:0 – FCONT[5:0]: Fine Contrast
FCONT bit-field defines the maximum voltage clk
signed number (two's complement). New values take effect at the beginning of each frame.
• Bits 7:6 – TDG[1:0]: Type of Digit
This bit-field specifies the number of segments and segment/common connections used to dis-
play a digit. See
Table 24-11. Type of Digit
Note:
• Bits 5:0 – STSEG[5:0]: Start Segment
STSEG bit-field defines the first segment terminal used to write the decoded display. This bit-
field is automatically incremented or decremented (according to the DEC value of CTRLH regis-
ter) by the number of segment terminals used in the digit.
Bit
+0x08
Read/Write
Initial Value
TDG[1:0]
0 0
0 1
1 0
1 1
1. Refer to specific device datasheet for “Type of Digit” availability.
R/W
7
0
Digit Type
7-segment with 3 common terminals, COM[2:0]
7-segment with 4 common terminals, COM[3:0]
14-segment with 4 common terminals, COM[3:0]
16-segment with 3 common terminals, COM[2:0]
Table 24-11
TDG[1:0]
V
R/W
LCD
6
0
= 3.0 V + ( FCONT[5:0] x 0.016 V )
and
R/W
Figure 24-11
5
0
(1)
R/W
4
0
below.
LCD
R/W
on segment and common pins. FCONT is a
3
0
STSEG[5:0]
Atmel AVR XMEGA B
R/W
2
0
R/W
1
0
R/W
0
0
CTRLG
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