boards/nucleo-f722ze: doc update

boards/nucleo-f722ze/doc.txt

@@ -12,6 +12,29 @@ STM32F722ZE microcontroller with 256KiB of RAM and 512KiB of Flash.
 
 @image html pinouts/nucleo-f446ze-and-f722ze.svg "Pinout for the nucleo-f722ze (from STM board manual)" width=50%
 
+### MCU
+
+| MCU          | STM32F722ZE
+|:-------------|:--------------------|
+| Family       | ARM Cortex-M7       |
+| Vendor       | ST Microelectronics |
+| RAM          | 256KiB              |
+| Flash        | 512KiB              |
+| Frequency    | up to 216 MHz       |
+| FPU          | yes                 |
+| Timers       | 18 (2x watchdog, 1 SysTick, 2x 32-bit, 13x 16-bit) |
+| ADCs         | 3x 12 bit (up to 24 channels) |
+| UARTs        | 4                   |
+| I2Cs         | 3                   |
+| SPIs         | 5                   |
+| CAN          | 1                   |
+| RTC          | 1                   |
+| Datasheet    | [Datasheet](https://www.st.com/resource/en/datasheet/stm32f722ic.pdf)|
+| Reference Manual | [Reference Manual](https://www.st.com/resource/en/reference_manual/rm0431-stm32f72xxx-and-stm32f73xxx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf)|
+| Programming Manual | [Programming Manual](https://www.st.com/resource/en/programming_manual/pm0253-stm32f7-series-and-stm32h7-series-cortexm7-processor-programming-manual-stmicroelectronics.pdf)|
+| Board Manual | [Board Manual](https://www.st.com/resource/en/user_manual/dm00244518-stm32-nucleo-144-boards-stmicroelectronics.pdf)|
+
+
 ## Flashing the Board Using ST-LINK Removable Media
 
 On-board ST-LINK programmer provides via composite USB device removable media.
@@ -25,4 +48,12 @@ make BOARD=nucleo-f722ze PROGRAMMER=cpy2remed flash
 @note This PROGRAMMER was tested using ST-LINK firmware 2.37.26. Firmware updates
       can be found on [this STM webpage](https://www.st.com/en/development-tools/stsw-link007.html).
 
+## Accessing RIOT shell
+
+Default RIOT shell access utilize VCP (Virtual COM Port) via USB interface,
+provided by integrated ST-LINK programmer. ST-LINK is connected to the
+microcontroller USART3.
+
+The default baud rate is 115200.
+
  */