ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 36

• 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
4.17.1
4.17.2
4.17.3
8077H–AVR–12/09
Register Description - Production Signature Row
RCOSC2M - Internal 2 MHz Oscillator Calibration Register
RCOSC32K - Internal 32.768 kHz Oscillator Calibration Register
RCOSC32M - Internal 32 MHz RC Oscillator Calibration Register
• Bit 7:0 - RCOSC2M[7:0]: Internal 2 MHz Oscillator Calibration Value
This byte contains the oscillator calibration value for the internal 2 MHz oscillator. Calibration of
the oscillator is performed during production test of the device. During reset this value is auto-
matically loaded into the Calibration Register B for the 2 MHz DFLL, refer to
Register B” on page 92
• Bit 7:0 - RCOSC32K[7:0]: Internal 32 kHz Oscillator Calibration Value
This byte contains the oscillator calibration value for the internal 32.768 kHz oscillator. Calibra-
tion of the oscillator is performed during production test of the device. During reset this value is
automatically loaded into the calibration register for the 32.768 kHz oscillator, refer to
”RC32KCAL - 32 KHz Oscillator Calibration Register” on page 90
• Bit 7:0 - RCOSC32M[7:0]: Internal 32 MHz Oscillator Calibration Value
This byte contains the oscillator calibration value for the internal 32 MHz oscillator. Calibration of
the oscillator is performed during production test of the device. During reset this value is auto-
matically loaded into the Calibration Register B for the 32 MHz DFLL, refer to
Calibration Register B” on page 92
Bit
+0x00
Read/Write
Initial Value
Bit
+0x01
Read/Write
Initial Value
Bit
+0x02
Read/Write
Initial Value
R
R
R
7
x
7
x
7
x
for more details.
R
R
R
6
x
6
x
6
x
R
R
R
5
5
5
x
x
x
for more details.
4
R
4
R
4
R
x
x
x
RCOSC32M[7:0]
RCOSC32K[7:0]
RCOSC2M[7:0]
R
R
R
3
x
3
x
3
x
R
R
R
2
2
2
x
x
x
for more details.
R
R
R
1
1
1
x
x
x
”CALB - Calibration
XMEGA A
0
R
0
R
0
R
x
x
x
RCOSC32K
RCOSC32M
RCOSC2M
”CALB -
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