ATxmega16A4 Atmel Corporation, ATxmega16A4 Datasheet - Page 138
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ATxmega16A4
Manufacturer Part Number
ATxmega16A4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega16A4
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
7
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)
3.3
Eeprom (bytes)
1024
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:
ATxmega16A4U-AU
Manufacturer:
SAMSUNG
Quantity:
514
Part Number:
ATxmega16A4U-AU
Manufacturer:
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Quantity:
20 000
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13.12 Multi-configuration
13.13 Virtual Port Registers
13.14 Register Description – Ports
13.14.1
13.14.2
8077H–AVR–12/09
DIR - Data Direction Register
DIRSET - Data Direction Set Register
be visible on the port pin as long as the event last. Normally this is one peripheral clock cycle
only.
MPCMASK can be used to set a bit mask for the pin configuration registers. When setting bit n in
MPCMASK, PINnCTRL is added to the pin configuration mask. During the next write to any of
the port's pin configuration registers, the same value will be written to all the port's pin configura-
tion registers set by the mask. The MPCMASK register is cleared automatically after the write
operation to the pin configuration registers is finished.
Virtual port registers allow for port registers in the extended I/O memory space to be mapped vir-
tually in the I/O memory space. When mapping a port, writing to the virtual port register will be
the same as writing to the real port register. This enables use of I/O memory specific instructions
for bit-manipulation, and the I/O memory specific instructions IN and OUT on port register that
normally resides in the extended I/O memory space. There are four virtual ports, so up to four
ports can be mapped virtually at the same time. The mapped registers are IN, OUT, DIR and
INTFLAGS.
• Bit 7:0 - DIR[7:0]: Data Direction
This register sets the data direction for the individual pins in the port. If DIRn is written to one, pin
n is configured as an output pin. If DIRn is written to zero, pin n is configured as an input pin.
• Bit 7:0 - DIRSET[7:0]: Port Data Direction Set
This register can be used instead of a Read-Modify-Write to set individual pins as output. Writing
a one to a bit will set the corresponding bit in the DIR register. Reading this register will return
the value of the DIR register.
Bit
+0x01
Read/Write
Initial Value
Bit
+0x00
Read/Write
Initial Value
R/W
R/W
7
0
7
0
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
R/W
R/W
4
0
4
0
DIRSET[7:0]
DIR[7:0]
R/W
R/W
3
0
3
0
R/W
R/W
2
0
2
0
R/W
R/W
1
0
1
0
XMEGA A
R/W
R/W
0
0
0
0
DIRSET
DIR
138
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