ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 29
ATxmega64A4U
Manufacturer Part Number
ATxmega64A4U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A4U
Flash (kbytes)
64 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
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)
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
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A4U-AU
Manufacturer:
ON
Quantity:
29 000
Company:
Part Number:
ATxmega64A4U-U
Manufacturer:
ATMEL
Quantity:
74
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4.15.12
8331A–AVR–07/11
LOCKBITS – Nonolatile Memory Lock Bit Register
• Bit 5:2 – Reserved
These bits are reserved and will always be read as zero. For compatibility with future devices,
always write these bits to zero when this register is written.
• Bit 1 – EELOAD: EEPROM Page Buffer Active Loading
The EELOAD flag indicates that the temporary EEPROM page buffer has been loaded with one
or more data bytes. It remains set until an EEPROM page write or a page buffer flush operation
is executed. For more details see
• Bit 0 – FLOAD: Flash Page Buffer Active Loading
The FLOAD flag indicates that the temporary flash page buffer has been loaded with one or
more data bytes. It remains set until an application boot page write page buffer flush operation is
executed. For more details see
This register is a mapping of the NVM lockbits into the I/O memory space, enable direct read
access from the application software. Refer to
ter” on page 34
Bit
+0x07
Read/Write
Initial Value
for description.
R
7
1
BLBB[1:0]
R
6
1
”Flash and EEPROM Programming Sequences” on page
”Flash and EEPROM Programming Sequences” on page
R
5
1
BLBA[1:0]
R
4
1
”LOCKBITS – Nonolatile Memory Lock Bit Regis-
Atmel AVR XMEGA AU
R
3
1
BLBAT[1:0]
2
R
1
R
1
1
LB[1:0]
R
0
1
LOCKBITS
430.
430.
29
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