ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 73

• 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

34.14 VBAT and Battery Backup Characteristics
Table 34-20. VBAT and Battery Backup Characteristics
8116I–AVR–09/10
Symbol
Parameter
Vbat supply voltage range
Vbat power-on slope rate
Vcc Power-loss slope range
main BOD threshold voltage
BBBOD required voltage change
BBBOD threshold voltage
BBBOD detection speed
Battery Backup System current
consumption
VBAT pin leackage
Delay from setting XOSCFDEN to
setting XOSCEN
Missing crystal oscillator cycles
before XOSCFAIL is set
Monotonic falling
Condition
Monotonic rising
RTC enabled from 1 Hz TOSC with XOSC
Failure Monitor enabled
RTC enabled from 1 Hz Hi ESR mode and
XOSC Failure Monitor enabled
Powering Battery Backup module from
Vcc
Min
Vbbbod
200
0.2
1.8
Typ
XMEGA A3B
530
680
1.2
1.7
32
1
Max
3.6
0.1
2.1
50
2
Units
cycles
V/ms
V/ms
nA
nA
nA
µS
V
V
V
V
s
73