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boards/microduino-corerf: Minor doc tweaks

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- Using @warning Doxygen command to make warning more visible
- Used IEC units for size specifications
- Aligned markdown source of the table
- Added note that the 5V pin is not connected to the board and cannot be used
  to power the board
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Marian Buschsieweke 2019-10-30 08:51:34 +01:00
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boards/microduino-corerf/doc.txt
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@ -8,31 +8,36 @@
![corerf-pinout](https://wiki.microduinoinc.com/images/d/df/RF%E5%BC%95%E8%84%9A.jpg)
Warning: Unlike on other ATmega MCUs, the GPIOs are not 5V tolerant.
@warning Unlike on other ATmega MCUs, the GPIOs are not 5V tolerant.
@note The 5V pin cannot be used to power the board, as the board is not
equipped with an voltage regulator. The pin is therefore not
connected. But it can be used to pass 5V to shields, if connected
to a 5V supply voltage.
## Board
The board is just a breakout for the ATmega128RFA1 MCU.
## MCU Details
| MCU | ATmega128RFA1 |
|:------------- -|:--------------------------|
| Family | ATmega |
| Vendor | Atmel |
| Package | QFN/MLF |
| SRAM | 16K |
| Flash | 128K |
| EEPROM | 4K |
| Core Frequency | 8MHz (16MHz no power save mode) |
| Oscillators | 32.768 kHz & 16 MHz |
| Timerr | 6 ( 2x8bit & 4x16bit ) |
|Analog Comparator| 1 |
| ADCs | 1x 15 channel 6 to 12-bit |
| USARTs | 2 |
| SPIs | 3 (1 SPI & 2 USART SPI) |
| I2Cs | 1 (called TWI) |
| Vcc | 1.8V - 3.6V |
| Datasheet / Reference Manual | [Datasheet and Reference Manual](http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-8266-MCU_Wireless-ATmega128RFA1_Datasheet.pdf) |
| Board Manual | [Wiki Page](https://wiki.microduinoinc.com/Microduino-Module_CoreRF) |
| MCU | ATmega128RFA1 |
|:------------------------------|:----------------------------------|
| Family | ATmega |
| Vendor | Atmel |
| Package | QFN/MLF |
| SRAM | 16KiB |
| Flash | 128KiB |
| EEPROM | 4KiB |
| Core Frequency | 8MHz (16MHz no power save mode) |
| Oscillators | 32.768 kHz & 16 MHz |
| Timer | 6 ( 2x8bit & 4x16bit ) |
| Analog Comparator | 1 |
| ADCs | 1x 15 channel 6 to 12-bit |
| USARTs | 2 |
| SPIs | 3 (1 SPI & 2 USART SPI) |
| I2Cs | 1 (called TWI) |
| Vcc | 1.8V - 3.6V |
| Datasheet / Reference Manual | [Datasheet and Reference Manual](http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-8266-MCU_Wireless-ATmega128RFA1_Datasheet.pdf) |
| Board Manual | [Wiki Page](https://wiki.microduinoinc.com/Microduino-Module_CoreRF) |
The MCU comes with a 2.4 GHz IEEE 802.15.4 radio that is compatible with the
Atmel AT86RF23x line of transceivers with the only difference being that it is