ATxmega64A1 Atmel Corporation, ATxmega64A1 Datasheet - Page 93
ATxmega64A1
Manufacturer Part Number
ATxmega64A1
Description
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
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A1-AU
Manufacturer:
Atmel
Quantity:
135
Company:
Part Number:
ATxmega64A1U-AU
Manufacturer:
ATMEL
Quantity:
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7.11.4
7.11.5
7.11.6
7.11.6.1
8077H–AVR–12/09
COMP0 - Oscillator Compare Register 0
COMP1 - Oscillator Compare Register 1
COMP2 - Oscillator Compare Register 2
COMP2 - Oscillator Compare Register 2, 2 MHz DFLL /32 MHz DFLL
• Bit 4:0 - CALH[12:8]: DFLL Calibration bits
These bits hold the 6 Most Significant Bits (MSB) of the calibration value for the oscillator. A fac-
tory-calibrated value is loaded from the signature row of the device and written to this register
during reset, giving an oscillator frequency approximate to the nominal frequency for the oscilla-
tor. These bits are not changed during automatic runtime calibration of the oscillator.
COMP0, COMP1 and COMP2 represent the register value COMP that hold the oscillator com-
pare value. During reset COMP is loaded with the default value representing the ideal
relationship between oscillator frequency and the 1.024 kHz reference clock. It is possible to
write these bits from software, and then enable the oscillator to tune to a frequency different than
its nominal frequency. These bits can only be written when the DFLL is disabled.
• Bit 7:0 - COMP[7:0]
These bits are the low byte of the COMP register.
• Bit 7:0 - COMP[15:8]
These bits are the middle byte of the COMP register.
• Bit 7:0 - COMP[23:16]
These bits are the highest bits of the COMP register.
Bit
+0x04
Read/Write
Initial Value
Bit
+0x05
Read/Write
Initial Value
Bit
+0x06
Read/Write
Initial Value
R/W
R/W
R/W
7
0
7
0
7
0
R/W
R/W
R/W
6
0
6
0
6
0
R/W
R/W
R/W
5
0
5
0
5
0
R/W
R/W
R/W
4
0
4
0
4
0
COMP[23:16]
COMP[15:8]
COMP[7:0]
R/W
R/W
R/W
3
0
3
0
3
0
R/W
R/W
R/W
2
0
2
0
2
0
R/W
R/W
R/W
1
0
1
0
1
0
XMEGA A
R/W
R/W
R/W
0
0
0
0
0
0
COMP1
COMP2
COMP0
93
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