ATXMEGA256A3-MU Atmel, ATXMEGA256A3-MU Datasheet - Page 71

• Manufacturer Part Number: ATXMEGA256A3-MU
• Description: 8-bit Microcontrollers - MCU 8/16 bit 1.6V-3.6V 256KB + 8KB
• Manufacturer: Atmel

Specifications of ATXMEGA256A3-MU

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: AVR
• Data Bus Width: 8 bit/16 bit
• Maximum Clock Frequency: 32 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Package / Case: QFN EP
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 8
• Data Rom Size: 4 KB
• Interface Type: I2C, SPI, USART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 50
• Number Of Timers: 7
• Processor Series: ATXMega
• Program Memory Type: Flash
• Factory Pack Quantity: 260
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.6 V

Table 34-18. External 32.768kHz Crystal Oscillator and TOSC characteristics
Note:
Table 34-19. Device wake-up time from sleep
Notes:
8068T–AVR–12/10
Symbol
C
Symbol
ESR/R
IN_TOSC
SF
1
1. See
1. Non-prescaled System Clock source.
2. Time from pin change on external interrupt pin to first available clock cycle. Additional interrupt response time is minimum 5
system clock source cycles.
Parameter
Idle Sleep, Standby and Extended
Standby sleep mode
Power-save and Power-down Sleep
mode
Parameter
Safety factor
Recommended crystal equivalent
series resistance (ESR)
Input capacitance between TOSC
pins
Figure 34-2 on page 71
Figure 34-2. TOSC input capacitance
The input capacitance between the TOSC pins is CL1 + CL2 in series as seen from the crystal
when oscillating without external capacitors.
for definition
Capacitive load matched to crystal
specification
Crystal load capacitance 6.5pF
Crystal load capacitance 9.0pF
Normal mode
Low power mode
Int. 32.768 kHz RC
Int. 2 MHz RC
Ext. 2 MHz Clock
Int. 32 MHz RC
Int. 32.768 kHz RC
Int. 2 MHz RC
Ext. 2 MHz Clock
Int. 32 MHz RC
TOSC1
Condition
Condition
32.768 KHz crystal
Device internal
(1)
C
L1
External
C
L2
Min
Min
3
TOSC2
Typ
0.17
10.3
Typ
130
320
1.7
2.2
4.5
5.8
2
2
(2)
XMEGA A3
Max
Max
60
35
Units
Units
µS
kΩ
pF
71