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The Butterfly's ATmega169 CPU is capable of speeds up to 8 MHz, but it is factory set by software to 2 MHz to preserve the button battery life. A pre-installed bootloader program allows the board to be re-programmed via a standard RS-232 serial plug with new programs that users can write with the free Atmel IDE tools.
ATmega328P Seeed Studio Seeeduino V4.2 is an Arduino-compatible board, which is based on ATmega328P MCU, Arduino UNO bootloader, and with an ATmega16U2 as a UART-to-USB converter. The three on-board Grove interface can make your board connect to over 300 Grove modules. Seeeduino Cortex-M0+] SAMD21 Cortex-M0+ Seeed Studio
ATmega328 is commonly used in many projects and autonomous systems where a simple, low-powered, low-cost micro-controller is needed. Perhaps the most common implementation of this chip is on the popular Arduino development platform, namely the Arduino Uno, Arduino Pro Mini [4] and Arduino Nano models.
IC: Microchip ATmega328P (8-bit AVR core) Clock Speed: 16 MHz on Uno board, though IC is capable of 20 MHz maximum at 5 Volts; Flash memory: 32 KB, of which 0.5 KB used by the bootloader; SRAM: 2 KB; EEPROM: 1 KB; USART peripherals: 1 (Arduino software default configures USART as a 8N1 UART) SPI peripherals: 1; I²C peripherals: 1; Operating ...
The Arduino Nano is an open-source breadboard-friendly microcontroller board based on the Microchip ATmega328P microcontroller (MCU) and developed by Arduino.cc and initially released in 2008. It offers the same connectivity and specs of the Arduino Uno board in a smaller form factor.
Arduino microcontrollers are pre-programmed with a bootloader that simplifies the uploading of programs to the on-chip flash memory. The default bootloader of the Arduino Uno is the Optiboot bootloader. [33] Boards are loaded with program code via a serial connection to another computer.
ATmega328P BBFuino come with the ATmega328 controller, loaded with Optiboot (Arduino UNO's bootloader), compatible with Arduino IDE and sample code, design to fit breadboard for prototyping and learning, lower down the cost by taking out the USB to UART IC, so the board has the basic component to operate. BlockDuino [148] Blockduino ATmega8 ...
Das U-Boot (subtitled "the Universal Boot Loader" and often shortened to U-Boot; see History for more about the name) is an open-source boot loader used in embedded devices to perform various low-level hardware initialization tasks and boot the device's operating system kernel.