ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 105

• 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

8077H–AVR–12/09
ality and not to ensure safe operation. The Brown-out detection (BOD) must be enabled to
ensure safe operation and detect if V
Only the Power-on reset Flag will be set after Power-on reset. The Brown-out Reset Flag is not
set even though the BOD circuit is used.
Figure 9-2.
Figure 9-3.
For characterization data on the V
device data sheet.
Note that the Power-on detection circuit is not designed to detect drops in the V
Brown-out detection must be enabled to detect falling V
below the V
INTERNAL
TIMEOUT
RESET
V
CC
POT
Power-On Reset (POR).
Increasing V
level.
V
POT
V
POT
V
V
CC
BOT
slope in the Power-on slope range.
V
POSR,MAX
t
TOUT
POT
CC
level for rising and falling V
voltage drops below minimum operating voltage.
V
CC
dV
dt
CC
voltage, even if the V
CC
, and V
t
V
CC
POSR
XMEGA A
slope consult the
CC
CC
level falls
voltage.
105