KS0497 Keyestudio V4.0 Development Board(Compatible With Arduino Uno)
keyestudio V4.0 development board based on the ATMEGA328P-PU , fully compatible with ARDUINO UNO REV3. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, 1 ICSP header, and a reset button. The built-in ICSP port can burn the firmware for ATMEGA328P-PU directly. This chip is burnt the firmware well before leaving the factory, therefore, we hardly use it. We can power on by USB wire, DC head and Vin GND pins. To facilitate wiring, a 0.5 m USB wire is provided for you.
- Microcontroller: ATMEGA328P-PU
- USB serial chip：CP2102
- Operating Voltage: 5V
- Input Voltage (recommended):DC 7-12V
- Digital I/O Pins: 14 (D0-D53)
- PWM Digital I/O Pins：6 (D3 D5 D6 D9 D10 D11)
- Analog Input Pins: 6(A0-A5)
- DC Current per I/O Pin: 20 mA
- DC Current for 3.3V Pin: 50 mA
- Flash Memory: 32 KB (ATMEGA328P-PU) of which 0.5 KB used by bootloader
- SRAM:2 KB (ATMEGA328P-PU)
- EEPROM: 1 KB (ATMEGA328P-PU)
- Clock Speed:16 MHz
Element and Pin Interfaces
Arduino MEGA has 54 digital input/output pins (of which 15 can be used as PWM outputs). These pins can be configured as digital input pin to read the logic value (0 or 1). Or used as digital output pin to drive different modules like LED, relay, etc.
Reference voltage (0-5V) for analog inputs. Used with analogReference(). Configures the reference voltage used for analog input (i.e. the value used as the top of the input range).
IIC communication pin
IIC communication pin
You can reset your Arduino board
Arduino board can be powered via USB connector.
There is a built-in LED driven by digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.
USB to serial chip, can convert the USB signal into serial port signal.
Onboard you can find the label: TX (transmit)
Onboard you can find the label: RX(receive )
How does Arduino calculate time? by using a crystal oscillator.
To control the voltage provided to the Arduino board, as well as to stabilize the DC voltage used by the processor and other components.
|DC Power Jack
Arduino board can be supplied with an external power DC7-12V from the DC power jack.
This pin on the board provides the voltage reference with which the microcontroller operates. A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V.
|Power Pin 3V3
A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.
Connect an external button to reset the board. The function is the same as reset button.
|Power Pin 5V
Provides 5V output voltage
You can supply an external power input DC7-12V through this pin to Arduino board.
Onboard has 16 analog inputs, labeled A0 to A15.
|ICSP (In-Circuit Serial Programming) Header
the AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND.
Each Arduino board has its own microcontroller. You can regard it as the brain of your board.
|Power LED Indicator
Powering the Arduino, LED on means that your circuit board is correctly powered on. If LED is off, connection is wrong.