ATxmega64D4 Atmel Corporation, ATxmega64D4 Datasheet - Page 68
ATxmega64D4
Manufacturer Part Number
ATxmega64D4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64D4
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 Speed
No
Usb Interface
No
Spi
4
Twi (i2c)
2
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
200
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
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
4
Output Compare Channels
14
Input Capture Channels
14
Pwm Channels
14
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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ATxmega64D4-AU
Manufacturer:
AT
Quantity:
20 000
Company:
Part Number:
ATxmega64D4-H
Manufacturer:
ATMEL
Quantity:
5
Company:
Part Number:
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Manufacturer:
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Quantity:
86
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6.10.4
8210B–AVR–04/10
XOSCFAIL - XOSC Failure Detection Register
Table 6-5.
• Bit 5 - X32KLPM: Crystal Oscillator 32.768 kHz Low Power Mode
Setting this bit enables low power mode for the 32.768 kHz Crystal Oscillator. This will reduce
the swing on the TOSC2 pin to save power.
• Bit 4 - Reserved
This bit is reserved and will always be read as zero. For compatibility with future devices, always
write this bit to zero when this register is written.
• Bit 3:0 - XOSCSEL[3:0]: Crystal Oscillator Selection
These bits select the type and start-up time for the crystal or resonator that is connected to the
XTAL or TOSC pins. It is impossible to change this configuration when XOSCEN in CTRL is set.
See
Table 6-6.
Notes:
Bit
+0x03
Read/Write
Initial Value
FRQRANGE[1:0]
XOSCSEL[3:0]
Table 6-6
0000
0010
0011
0111
1011
1. This option should only be used when frequency stability at start-up is not important for the
2. This option is intended for use with ceramic resonators and will ensure frequency stability at
00
01
10
11
application. The option is not suitable for crystals.
start-up. It can also be used when the frequency stability at start-up is not important for the
application.
7
–
R
0
Oscillator frequency range selection
External Oscillator selection and Startup Time
for crystal selections..
Group Configuration
R
6
–
0
Group Configuration
XTAL_256CLK
XTAL_1KCLK
XTAL_16KCLK
12TO16
04TO2
9TO12
2TO9
EXTCLK
32KHZ
R
5
–
0
(2)
(1)
R
4
–
0
Frequency range
12 MHz - 16 MHz
0.4 MHz - 2 MHz
9 MHz - 12 MHz
2 MHz - 9 MHz
R
Selected Clock Source
3
–
0
0.4 - 16 MHz XTAL
0.4 - 16 MHz XTAL
0.4 - 16 MHz XTAL
32.768 kHz TOSC
External Clock
R
2
–
0
Recommended range
for capacitors C1 and C2 (pF)
XOSCFDIF
R/W
1
0
XMEGA D
XOSCFDEN
100
15
15
10
R/W
Start-up time
0
0
16K CLK
16K CLK
256 CLK
1K CLK
6 CLK
XOSCFAIL
68
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