ATxmega64A1 Atmel Corporation, ATxmega64A1 Datasheet - Page 34

• Manufacturer Part Number: ATxmega64A1
• Manufacturer: Atmel Corporation

Specifications of ATxmega64A1

• Flash (kbytes): 64 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: 78
• Ext Interrupts: 78
• Usb Speed: No
• Usb Interface: No
• Spi: 12
• Twi (i2c): 4
• Uart: 8
• 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: 4
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• 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: 8
• Output Compare Channels: 24
• Input Capture Channels: 24
• Pwm Channels: 24
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8077H–AVR–12/09
Table 4-8.
• Bit 5:4 - BLBA[1:0]: Boot Lock Bit Application Section
These bits indicate the locking mode for the Application Section. Even though the BLBA bits are
writable, they can only be written to a stricter locking. Resetting the BLBA bits is only possible by
executing a Chip Erase Command.
Table 4-9.
BLBB[1:0]
BLBA[1:0]
11
10
01
00
11
10
01
00
Boot Lock Bit for The Boot Loader Section
Boot Lock Bit for the Application Section
Group Configuration
Group Configuration
RWLOCK
RWLOCK
NOLOCK
NOLOCK
WLOCK
WLOCK
RLOCK
RLOCK
Description
No Lock, no restrictions for SPM and (E)LPM accessing
the Boot Loader section.
Write Lock, SPM is not allowed to write the Boot Loader
section
Read Lock, (E)LPM executing from the Application
section is not allowed to read from the Boot Loader
section.
If the interrupt vectors are placed in the Application
section, interrupts are disabled while executing from the
Boot Loader section.
Read and Write Lock, SPM is not allowed to write to the
Boot Loader section and (E)LPM executing from the
Application section is not allowed to read from the Boot
Loader section.
If the interrupt vectors are placed in the Application
section, interrupts are disabled while executing from the
Boot Loader section
Description
No Lock, no restrictions for SPM and (E)LPM accessing
the Application Section.
Write Lock, SPM is not allowed to write them
Application Section
Read Lock, (E)LPM executing from the Boot Loader
Section is not allowed to read from the Application
Section.
If the interrupt vectors are placed in the Boot Loader
Section, interrupts are disabled while executing from the
Application Section.
Read and Write Lock, SPM is not allowed to write to the
Application Section and (E)LPM executing from the
Boot Loader Section is not allowed to read from the
Application section.
If the interrupt vectors are placed in the Boot Loader
Section, interrupts are disabled while executing from the
Application Section.
XMEGA A
34