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Specifications
SKU: 11645823
| Parameter | Description | Value |
|---|---|---|
| Package | Package Type | 100-TQFP |
| Operating Voltage (V) | Supply Voltage Range | 1.62 to 3.6 V |
| Operating Temperature (°C) | Temperature Range for Operation | -40 to +85 |
| Flash Memory (KB) | On-chip Flash Memory Size | 256 KB |
| SRAM (KB) | On-chip SRAM Size | 32 KB |
| EEPROM (KB) | On-chip EEPROM Size | 4 KB |
| Clock Speed (MHz) | Maximum Clock Frequency | 32 MHz |
| I/O Pins | Number of I/O Pins | 79 |
| ADC | Analog-to-Digital Converter | 12-bit, 8 channels |
| DAC | Digital-to-Analog Converter | 12-bit, 2 channels |
| Timers | Number of Timers | 6 (2x 16-bit, 4x 8-bit) |
| Serial Communication Interfaces | Number of Serial Communication Interfaces | 4 UART, 2 SPI, 2 TWI |
| Watchdog Timer | Watchdog Timer | Yes |
| Brown-out Detection | Brown-out Detection | Yes |
| Power Consumption (mA) | Active Mode Current at 32 MHz, 3.3 V | 12 mA |
| Power Consumption (μA) | Sleep Mode Current with SRAM Retention | 0.5 μA |
| Programming Interface | Programming Interface | PDI (Program and Debug Interface) |
| Debugging | On-chip Debugging Support | Yes |
| Capacitive Touch | Capacitive Touch Channels | 24 |
| USB | USB Interface | No |
| CAN | CAN Interface | No |
| Power Management | Power Management Units | 4 |
| Package Dimensions (mm) | Package Dimensions | 14 x 14 x 1.0 mm |
Instructions for Using ATXMEGA256A3BU-AU
Power Supply:
- Ensure the supply voltage is within the range of 1.62 to 3.6 V.
- Use decoupling capacitors (typically 100 nF and 10 μF) close to the power pins to stabilize the supply.
Clock Configuration:
- The device supports internal oscillators and external clock sources. Configure the clock source using the fuses or the Device Initialization API.
- For high-precision applications, use an external crystal oscillator.
Programming:
- Use the PDI interface for programming and debugging. Connect the PDI lines (PDI_DATA, PDI_CLK) to your programmer.
- Use Atmel Studio or another compatible IDE to write and upload code to the device.
Pin Configuration:
- Refer to the datasheet for the pinout diagram and configure the I/O pins as required for your application.
- Set the direction of the I/O pins using the PORTx.DIR register.
Peripheral Configuration:
- Initialize peripherals such as ADC, DAC, timers, and serial communication interfaces using the appropriate registers or library functions.
- Configure the ADC and DAC by setting up the reference voltages and channel selections.
- Set up timers for periodic interrupts or PWM generation.
Power Management:
- Use the power management units to control the power consumption of different parts of the device.
- Implement sleep modes to reduce power consumption when the device is idle.
Interrupts:
- Enable and configure interrupts for various events such as timer overflows, ADC conversions, and external triggers.
- Write interrupt service routines (ISRs) to handle these events.
Brown-out Detection:
- Enable brown-out detection to reset the device if the supply voltage drops below a certain threshold.
- Configure the threshold level using the BODCTRL register.
Capacitive Touch:
- Use the QTouch library to implement capacitive touch functionality.
- Configure the touch channels and set up the necessary hardware and software settings.
Debugging:
- Use the on-chip debugging features to step through your code, set breakpoints, and inspect variables.
- Connect a debugger to the PDI interface for real-time debugging.
For detailed information, refer to the ATXMEGA256A3BU-AU datasheet and application notes provided by Microchip Technology.
(For reference only)Inquiry - ATXMEGA256A3BU-AU
