ATxmega64D4 Atmel Corporation, ATxmega64D4 Datasheet - Page 103
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
Part Number:
ATxmega64D4-AU
Manufacturer:
AT
Quantity:
20 000
Company:
Part Number:
ATxmega64D4-H
Manufacturer:
ATMEL
Quantity:
5
Company:
Part Number:
ATxmega64D4-U
Manufacturer:
ATMEL
Quantity:
86
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11.4
11.4.1
11.4.2
8210B–AVR–04/10
I/O Pin Configuration
Totem-pole
Pull-down
The Pin n Configuration (PINnCTRL) register is used for additional I/O pin configuration. A pin
can be set in a totem-pole, wired-AND, or wired-OR configuration. It is also possible to enable
inverted input and output for the pin.
For totem-pole output there are four possible pull configurations: Totem-pole (Push-pull), Pull-
down, Pull-up and Bus-keeper. The bus-keeper is active in both directions. This is to avoid oscil-
lation when disabling the output. The totem-pole configurations with pull-up and pull-down only
have active resistors when the pin is set as input. This feature eliminates unnecessary power
consumption.
For wired-AND and wired-OR configuration, the optional pull-up and pull-down resistors are
active in both input and output direction.
Since pull configuration is configured through the pin configuration register, all intermediate port
states during switching of pin direction and pin values are avoided.
The I/O pin configurations are summarized with simplified schematics from
103
Figure 11-2. I/O pin configuration - Totem-pole (push-pull).
Figure 11-3. I/O pin configuration - Totem-pole with pull-down (on input).
to
Figure 11-7 on page
OUTn
OUTn
DIRn
DIRn
105.
INn
INn
Pn
Pn
Figure 11-2 on page
XMEGA D
103
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