ATxmega128A3U Atmel Corporation, ATxmega128A3U Datasheet - Page 409

• Manufacturer Part Number: ATxmega128A3U
• Manufacturer: Atmel Corporation

Specifications of ATxmega128A3U

• Flash (kbytes): 128 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 50
• Ext Interrupts: 50
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 10
• Twi (i2c): 2
• Uart: 7
• 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
• Dac Channels: 2
• Dac Resolution (bits): 12
• 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: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

31.6.1
31.6.2
31.6.2.1
31.6.2.2
31.6.2.3
31.6.3
31.6.4
8331A–AVR–07/11
Bypass Register
Device Identification Register
Boundary Scan Chain
PDICOM Data Register
Version
Part Number
Manufacturer ID
The bypass register consists of a single shift register stage. When the bypass register is
selected as the path between TDI and TDO, the register is reset to 0 when leaving the capture
DR controller state. The bypass register can be used to shorten the scan chain on a system
when the other devices are to be tested.
Figure 31-5. Device identification register.
Version is a 4-bit number identifying the revision of the device. The JTAG version number fol-
lows the revision of the device. Revision A is 0x0, revision B is 0x1, and so on.
The part number is a 16-bit code identifying the device. Refer to the device data sheets to find
the correct number.
The manufacturer ID is an 11-bit code identifying the manufacturer. For Atmel, this code is
0x01F.
The boundary scan chain has the capability of driving and observing the logic levels on all I/O
pins. Refer to
The PDICOM data register is a 9-bit wide register used for serial-to-parallel and parallel-to-serial
conversions of data between the JTAG TAP and the PDI. For details, refer to
Debug Interface” on page
Bit
Device ID
”Boundary Scan Chain” on page 407
MSB
31
Version
4 bits
28
410.
27
Part Number
16 bits
for a complete description.
Atmel AVR XMEGA AU
12
11
Manufacturer ID
11 bits
”Program and
1
LSB
1 bit
0
1
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