ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 403

• 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

29.12.3.7
29.12.3.8
29.12.3.9
29.12.3.10
29.12.3.11
8291A–AVR–10/11
Erase and Write Page
Erase Application/ Boot Loader/ EEPROM Section
Application / Boot Section CRC
Flash CRC
Write Fuse/ Lock Bit
The erase and write application section page, erase and write boot loader section page, and
erase and write EEPROM page commands are used to erase one page and then write a loaded
flash/EEPROM page buffer into that page in the selected memory space in one atomic
operation.
The BUSY flag in the NVM STATUS register will be set until the operation is finished.
The erase application section, erase boot loader section, and erase EEPROM section
commands are used to erase the complete selected section.
The BUSY flag in the NVM STATUS register will be set until the operation is finished.
The application section CRC and boot loader section CRC commands can be used to verify the
content of the selected section after programming.
The BUSY flag in the NVM STATUS register will be set until the operation is finished. The CRC
checksum will be available in the NVM DATA register.
The flash CRC command can be used to verify the content of the flash program memory after
programming. The command can be executed independently of the lock bit state.
Once this operation starts, the PDI bus between the PDI controller and the NVM is disabled, and
the NVMEN bit in the PDI STATUS register is cleared until the operation is finished. Poll the
NVMEN bit until this is set again, indicting the PDI bus is enabled.
The BUSY flag in the NVM STATUS register will be set until the operation is finished. The CRC
checksum will be available in the NVM DATA register.
The write fuse and write lock bit commands are used to write the fuses and the lock bits to a
more secure setting.
The BUSY flag in the NVM STATUS register will be set until the command is finished.
For lock bit write, the lock bit write command can also be used.
1. Load the NVM CMD register with erase and write application section/boot loader sec-
2. Write the selected page by doing a PDI write. The page is written by addressing any
1. Load the NVM CMD register with Erase Application/ Boot/ EEPROM Section command
2. Set the CMDEX bit in the NVM CTRLA register.
1. Load the NVM CMD register with application/ boot loader section CRC command.
2. Set the CMDEX bit in the NVM CTRLA register. This requires the timed CCP sequence
1. Load the NVM CMD register with flash CRC command.
2. Set the CMDEX bit in the NVM CTRLA register.
1. Load the NVM CMD register with the write fuse/ lock bit command.
2. Write the selected fuse or lock bits by doing a PDI write operation.
tion/user signature row/EEPROM page command.
byte location within the page.
during self-programming.
Atmel AVR XMEGA B
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