ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 235

• 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

18.15 Register Description - Frame
18.15.1
18.15.2
8291A–AVR–10/11
FRAMENUML – Frame Number Low
FRAMENUMH – Frame Number High
The FRAMENUML and FRAMENUMH registers represent the 11-bit value, FRAMENUM, that
holds the frame number from the most recently received start of frame packet.
• Bit 7:0 – FRAMENUM[7:0]: Frame Number
This byte contains the eight lsb sof the frame number (FRAMENUM).
• Bit 7 – FRAMEERR: Frame Error
This flag is set if a CRC or bit-stuffing error was detected in the most recently received start of
frame packet.
• Bit 6:3 – 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 2:0 – FRAMENUM[10:8]: Frame Number
This byte contains the three msbs of the frame number (FRAMENUM).
Bit
+0x01
Read/Write
Initial Value
Bit
+0x00
Read/Write
Initial Value
FRAMEERR
7
R
0
R
7
0
R
R
6
0
6
–
0
R
R
5
0
5
–
0
FRAMENUM[7:0]
R
R
4
0
4
–
0
R
R
3
0
3
–
0
Atmel AVR XMEGA B
R
R
2
0
2
0
FRAMENUM[10:8]
R
R
1
0
1
0
R
R
0
0
0
0
FRAMENUMH
FRAMENUML
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