Lychee Nano (hereinafter referred to as Nano) is an exquisite mini Arm9 core board/development board, which can be used for beginners to learn Linux or for commercial product development. Nano provides a wealth of peripherals (LCD, UART, SPI, I2C, PWM, SDIO, KEYADC...) and relatively strong performance (24M~408MHz, 32MB DDR) in the size equivalent to SD card (25.4*33mm).Lichee Nano Applications :

IoT applications using more complex communication interfaces and protocols

Applications that require a more beautiful and complex logic human-computer interaction interface

Application scenarios that require more operations (compared to common MCUs)

Scenarios that need to use RTT, open-source software packages under Linux for rapid development

High-end geek players have a balance in size, performance, and ease of use.

Entry-level players, software engineers, use familiar language for hardware DIY.

Features/Specifications

• CPU

-Allwinner F1C100s, ARM 926EJS processor, up to 900MHz

• Memory & storage

-32MB DDR integrated into SoC, 16MB SPI Flash
-Onboard TF Slot, can be boot from TF Card,

• Display

-40-pin RGB LCD FPC connector supporting 272×480, 480×800, 1024×600

and other resolutions resistive displays(and capacitive displays trough the adapter board).
-Support 720P video output, support video stream decoding such as H.264 / MPEG

• Communication Interface

-SDIO for WiFi module
-SPI x2, TWI x3, UART x3

-OTG USB x1, TV-out

• Other interfaces

-PWM x2, LRADC x1

-Headphone output x2, Mic x1

• Electrical characteristics

-Input 5V via micro USB port, 3.3 to 5V via pin
-Output – 3.3V, selectable input RTC voltage
-Power Consumption – 54mA (idle) with Linux, 250mA with display
-Storage Temperature: -40~125°C; operating: -20 to 70°C

Software and development environment

• Support 3.10 BSP Linux,
• Support 4.19 mainline Linux,
• Support Xboot bare metal development environment
• Support RT-Thread

Target application scenario:

• IoT applications using more complex communication interfaces and protocols
• The application of human-computer interaction interface that needs more beautiful and complex logic
• Application scenarios that require more operations (as opposed to common MCUs)
• Need to use open source software under Linux for rapid development scenarios
• High-end geek players balance in size, performance, and ease of use.
• Entry-level player, software engineer, hardware DIY using familiar language

Please be careful when plugging and unplugging the Micro-USB. It is recommended that you put Solder on the two fixing feet of the USB socket after you get it

Nano needs a card to boot (or welding SPI flash). Only plugging in the USB is basically no response, the screen has no output status, but you can start U-boot via USB without inserting the card and no flash.

Nano's system debugging serial port is UART0, which is the two pins identified by "U0: Tx Rx" on the silkscreen of the board

Simple usability testing, please refer to the next section, we need you in advance 1. Prepare a USB to TTL good welding tool 2. Pin 3. Connect the serial port 4. Prepare a Micro-USB cable

If you have any questions, please read the comment area at the bottom of the corresponding document first, and then contact us or record your doubts in the comment area, and then wait for our reply; after that, we will also select representative questions, in the next section summarizes the solutions to these problems