ATxmega128D4 Atmel Corporation, ATxmega128D4 Datasheet - Page 52

• 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

8210B–AVR–04/10
• Bit 6:5 - QDIRM[1:0]: Quadrature Decode Index Recognition Mode
These bits determine the quadrature state for the QDPH0 and QDPH90 signals where a valid
index signal is recognized and the counter index data event is given according to
page
nal is used.
These bits are only available for CH0CTRL and CH2CTRL
Table 5-5.
• Bit 4 - QDIEN: Quadrature Decode Index Enable
When this bit is set the event channel will be used as QDEC index source, and the index data
event will be enabled.
These bit is only available for CH0CTRL and CH2CTRL.
• Bit 3 - QDEN: Quadrature Decode Enable
Setting this bit enables QDEC operation.
These bits is only available for CH0CTRL and CH2CTRL.
• Bit 2:0 - DIGFILT[2:0]: Digital Filter Coefficient
These bits define the length of digital filtering used. Events will be passed through to the event
channel only when the event source has been active and sampled with the same level for a a
number of peripheral clock for the number of cycles as defined by DIGFILT.
Table 5-6.
QDIRM[1:0]
0
0
1
1
52. These bits is only needed to set when a quadrature encoed with a connected index sig-
DIGFILT[2:0]
0
1
0
1
000
001
010
011
100
101
110
111
QDIRM Bit Settings
Digital Filter Coefficient values
Index Recognition State
{QDPH0, QDPH90} = 0b00
{QDPH0, QDPH90} = 0b01
{QDPH0, QDPH90} = 0b10
{QDPH0, QDPH90} = 0b11
Group Configuration
1SAMPLE
2SAMPLES
3SAMPLES
4SAMPLES
5SAMPLES
6SAMPLES
7SAMPLES
8SAMPLES
Description
1 sample
2 samples
3 samples
4 samples
5 samples
6 samples
7 samples
8 samples
XMEGA D
Table 5-5 on
52