Datasheet

Adafruit Metro Mini 328 - 5V 16MHz

PRODUCT ID: 2590

Description

We sure love the ATmega328 here at Adafruit, and we use them

a lot

for our own projects. The

processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore -

just enough for most simple projects. When we need to go small, we use a Pro Trinket 3V or 5V,

but if you want to have USB-to-Serial built in, we reach for an Adafruit METRO Mini.

METRO Mini is the culmination of years of playing with AVRs: we wanted to make a tiny,

breadboard-friendly development board that is easy to use and is hacker friendly. Metro Mini can

be programmed with the Arduino IDE (select 'UNO' in the boards dropdown)

ATmega328 brains - This popular chip has 32KB of flash (1/2 K is reserved for the bootloader),

2KB of RAM, clocked at 16MHz

Power the METRO Mini with 6-16V polarity protected on the Vin pin, or plug the micro USB

connector to any 5V USB source.

METRO has 20 GPIO pins, 6 of which are Analog in as well, and 2 of which are reserved for the USB

serial converter. There's also 6 PWMs available on 3 timers (1 x 16-bit, 2 x 8-bit). There's a

hardware SPI port, hardware I2C port and hardware UART to USB.

GPIO Logic level is 5V but by cutting and soldering closed a jumper on the bottom, you can easily

convert it to 3.3V logic

5V onboard regulator with 150mA out, 3.3V 50mA available via FTDI chip

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Adafruit Metro Mini 328 - 5V 16MHz PRODUCT ID: 2590 Description We sure love the ATmega328 here at Adafruit, and we use them a lot for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore just enough for most simple projects. When we need to go small, we use a Pro Trinket 3V or 5V, but if you want to have USB-to-Serial built in, we reach for an Adafruit METRO Mini.
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USB to Serial converter , there's a genuine SiLabs CP2104 hardware USB to Serial converter that can be used by any computer to listen/send data to the METRO, and can also be used to launch and update code via the bootloader Four indicator LEDs , on the top of the PCB, for easy debugging.