Arduino Pro Mini 3.3vdc
Arduino Pro Mini 3.3vdc is part of the family.
Minimalist Arduino boards designed for users looking for versatility and good value.
This board does not have the welded pins, so you can connect them in the orientation that suits you the most.
It is available for all those Arduino users with some experience
Which they can remove because of the absence of integrated pins and USB connector and who also understand the limitations of the system voltage (3.3V).
Furthermore, one of the advantages of using this low voltage board.
It Does not need interface circuits with 3.3V devices and modules (GPS, accelerometers, sensors, etc.)
For the 5V version you can see the Arduino Pro Mini 5V/16MHz product.
14 digital input / output port: RX, TX, D2 ~ D13,
8 analog input port: A0 ~ A7
A pair of TTL level serial port transceiver: RX / TX
6 PWM port: D3, D5, D6, D9, D10, D11
Use Atmega328P-AU microcontroller
External 3.3V ~ 12V DC power supply
Support 9V battery
Size: 33.3 * 18.0 (mm)
Microcontroller : ATmega328P
Operating Voltage : 5V
Input Voltage (recommended) :7-12V
Input Voltage (limits) : 6-20V
Digital I/O Pins : 14 (of which 6 provide PWM output)
Analog Input Pins : 6
DC Current per I/O Pin : 40 mA
DC Current for 3.3V Pin : 50 mA
Flash Memory : 32 KB (ATmega328) of which 0.5 KB used by bootloader
SRAM : 2 KB (ATmega328)
EEPROM : 1 KB (ATmega328)
Clock Speed : 16 MHz