ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 42

• 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

4.17.24
4.18
4.18.1
4.19
4.20
4.20.1
8077H–AVR–12/09
Register Description – General Purpose I/O Memory
Register Description – External Memory
Register Description – MCU Control
DACBOFFCAL - DACB Offset Calibration Register
GPIORn – General Purpose I/O Register n
DEVID0 - MCU Device ID Register 0
• Bit 7:0 - DACAGAINCAL[7:0] - DACB Gain Calibration Byte
This byte contains the gain calibration value for the Digital to Analog Converter B (DACB). Cali-
bration of the Digital to Analog Converters are done during production test of the device. The
calibration byte is not loaded automatically into the DAC Gain Calibration register, and this must
be done from software.
• Bit 7:0 - DACBOFFCAL[7:0] - DACB Offset Calibration Byte
This byte contains the offset calibration value for the Digital to Analog Converter B (DACB). Cal-
ibration of the Digital to Analog Converters are done during production test of the device. The
calibration byte is not loaded automatically into the DAC Offset Calibration register, and this
must be done from software.
This is a general purpose register that can be used to store data such as global variables in the
bit accessible I/O memory space.
Refer to
The DEVID0, DEVID1 and DEVID2 contains the 3-byte identification that identify each micro-
controller device type. For details on the actual ID refer to the device data sheet.
Bit
+n
Read/Write
Initial Value
Bit
+0x00
Read/Write
Initial Value
Bit
+0x33
Read/Write
Initial Value
”EBI - External Bus Interface” on page
R/W
7
R
0
1/0
7
0
R
7
R
6
0
R/W
1/0
6
0
R
6
R
5
0
R/W
5
0
1/0
R
5
R
4
0
DACBOFFCAL[7:0]
R/W
4
0
1/0
R
GPIORn[7:0]
4
DEVID0[7:0]
268.
R
3
x
R/W
3
0
1/0
R
3
R
2
x
R/W
2
0
1/0
R
2
R
1
x
R/W
1
0
1/0
R
1
XMEGA A
R
0
x
R/W
0
0
1/0
R
0
DACAOFFCAL
GPIORn
DEVID0
42