ATxmega32A4 Atmel Corporation, ATxmega32A4 Datasheet - Page 34

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ATxmega32A4

Manufacturer Part Number
ATxmega32A4
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATxmega32A4

Flash (kbytes)
32 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
7
Twi (i2c)
2
Uart
5
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
1024
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
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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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

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