ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 293
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
- Current page: 293 of 505
- Download datasheet (8Mb)
Table 23-1.
Note:
23.3.2
8331A–AVR–07/11
Operating Mode
Asynchronous normal
speed mode (CLK2X = 0)
Asynchronous double
speed mode (CLK2X = 1)
Synchronous and master
SPI mode
1. The baud rate is defined to be the transfer rate in bits per second (bps)
External Clock
Equations for calculating baud rate register settings.
For BSEL=0, all baud rates be achieved by changing BSEL instead of setting BSCALE:
BSEL = (2
External clock (XCK) is used in synchronous slave mode operation. The XCK clock input is sam-
pled on the peripheral clock frequency (f
limited by the following:
For each high and low period, XCK clock cycles must be sampled twice by the peripheral clock.
If the XCK clock has jitter, or if the high/low period duty cycle is not 50/50, the maximum XCK
clock speed must be reduced accordingly.
f
XCK
Conditions
BSCALE ≥ 0
BSCALE < 0
BSCALE ≥ 0
BSCALE < 0
f
f
f
f
f
BAUD
BAUD
BAUD
BAUD
BAUD
<
BSCALE
f
---------- -
PER
4
≤
≤
≤
≤
<
f
---------- -
f
---------- -
f
---------- -
f
---------- -
f
---------- -
1
2
3
4
5
6
7
PER
PER
PER
PER
PER
16
16
8
8
2
BSCALE-1
)
BSEL
f
f
BAUD
BAUD
f
f
BAUD
0
0
0
0
0
0
0
BAUD
Baud Rate
=
=
f
=
BAUD
=
------------------------------------------------------------------ -
16((2
--------------------------------------------------------------- -
8((2
-------------------------------------------------------------- -
2
------------------------------------------------------------- -
2
BSCALE
BSCALE
BSCALE
=
PER
BSCALE
(1)
→
→
→
→
→
→
→
------------------------------------ -
2
Calculation
), and the maximum XCK clock frequency (f
⋅
⋅
f
(
⋅
f
PER
f
8
BSEL
f
PER
16(
PER
⋅
PER
f
⋅
⋅
PER
BSEL )
(
BSEL )
BSEL
BSEL
Atmel AVR XMEGA AU
+
1
BSCALE
+
)
+
+
+
1)
1
1)
1)
0
0
0
0
0
0
0
)
BSEL
BSEL
BSEL
BSEL
BSEL Value Calculation
BSEL
=
=
=
BSEL
1
3
7
15
31
63
127
=
---------------------
2
------------------------------------------------ 1
2
---------------------
2
-------------------------------------------- - 1
2
BSCALE
BSCALE
BSCALE
BSCALE
1
=
1
------------------ - 1
2f
f
f
f
BAUD
PER
PER
PER
⎛
⎝
⋅
⎛
⎝
--------------------- - 1
16f
⋅ f
16
------------------ - 1
8f
8
f
f
BAUD
PER
PER
f
BAUD
BAUD
BAUD
–
–
–
–
–
XCK
⎞
⎠
⎞
⎠
293
)is
Related parts for ATxmega64A4U
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: