ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 139

• Manufacturer Part Number: ATXMEGA256A3B-MH
• Description: MCU AVR 256KB FLASH A3B 64-QFN
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA256A3B-MH

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Size: 256KB (128K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 16x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Processor Series: ATXMEGA256x
• Core: AVR8
• Data Bus Width: 8 bit, 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 49
• Number Of Timers: 7
• Operating Supply Voltage: 1.6 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• On-chip Dac: 12 bit, 2 Channel
• For Use With: ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATXMEGA256A3B-MU; ATXMEGA256A3B-MU

13.14.3
13.14.4
13.14.5
13.14.6
8077H–AVR–12/09
DIRCLR - Data Direction Clear Register
DIRTGL - Data Direction Toggle Register
OUT - Data Output Value
OUTSET - Data Output Value Set Register
• Bit 7:0 - DIRCLR[7:0]: Port Data Direction Clear
This register can be used instead of a Read-Modify-Write to set individual pins as input. Writing
a one to a bit will clear the corresponding bit in the DIR register. Reading this register will return
the value of the DIR register.
• Bit 7:0 - DIRTGL[7:0]: Port Data Direction Toggle
This register can be used instead of a Read-Modify-Write to toggle the direction on individual
pins. Writing a one to a bit will toggle the corresponding bit in the DIR register. Reading this reg-
ister will return the value of the DIR register.
• Bit 7:0 - OUT[7:0]: Port Data Output value
This register sets the data output value for the individual pins in the port. If OUTn is written to
one, pin n is driven high. If OUTn is written to zero, pin n is driven low. For this setting to have
any effect the pin direction must be set as output.
Bit
+0x03
Read/Write
Initial Value
Bit
+0x04
Read/Write
Initial Value
Bit
+0x02
Read/Write
Initial Value
Bit
+0x05
Read/Write
Initial Value
R/W
R/W
R/W
R/W
7
0
7
0
7
0
7
0
R/W
R/W
R/W
R/W
6
0
6
0
6
0
6
0
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R/W
4
0
4
0
4
0
4
0
OUTSET[7:0]
DIRCLR[7:0]
DIRTGL[7:0]
OUT[7:0]
R/W
R/W
R/W
R/W
3
0
3
0
3
0
3
0
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0
XMEGA A
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
OUTSET
DIRCLR
DIRTGL
OUT
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