ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 114
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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8331A–AVR–07/11
When the BOD is enabled and V
9-4), the brownout reset is immediately activated.
When V
MCU after the timeout period, t
The trigger level has a hysteresis to ensure spike free brownout detection. The hysteresis on the
detection level should be interpreted as V
The BOD circuit will detect a drop in V
ger than t
Figure 9-4.
For BOD characterization data consult the device datasheet. The programmable BODLEVEL
setting is shown in
Table 9-2.
Notes:
The BOD circuit has three modes of operation:
• Disabled: In this mode, there is no monitoring of the V
INTERNAL
TIME-OUT
1. The values are nominal values only. For accurate, actual numbers, consult the device
2. Changing these fuse bits will have no effect until leaving programming mode.
CC
BOD
BODLEVEL[2:0]
RESET
increases above the trigger level (V
datasheet.
.
V
CC
Brownout detection reset.
Programmable BODLEVEL setting.
111
110
101
100
011
010
001
000
Table
9-2.
(1)
TOUT
CC
, has expired.
decreases to a value below the trigger level (V
V
BOT-
CC
BOT+
only if the voltage stays below the trigger level for lon-
t
= V
BOD
BOT+
BOT
V
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
Atmel AVR XMEGA AU
BOT
in
+ V
Figure
HYST
CC
/2 and V
level.
9-4), the reset counter starts the
V
t
TOUT
BOT+
BOT-
= V
BOT
Unit
- V
V
BOT-
HYST
in
/2.
Figure
114
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