Develop applications using the AVR 2-series ATtiny1626Designed by LeoNerd's Store in United Kingdom
Still active despite the COVID-19 situation; though shipping times will be slightly slower at the moment.
Summary ATtiny1626 breakout UPDI+ programming header Status LED Reset button What is it? This board holds an AVR ATtiny1626 microcontroller, providing access to all of the IO pins. It adds power su…Read More…
This board holds an AVR ATtiny1626 microcontroller, providing access to all of the IO pins. It adds power supply decoupling capacitors, an LED, a button, and UPDI programming header to make a convenient self-contained development board for small microcontroller projects.
The LED is attached to the
PA7 pin via a 2k2 current-limiting resistor.
The button is attached to the
UPDI/RESET# pin via a series resistor to prevent damage in case of drive contention. Note that the
PA0 pin defaults to UPDI mode. Switching the pin to RESET mode will require the use of a 12V-capable UPDI programmer if you want to program the chip after this.
The board also provides a programming header in the AVR standard 2x3 layout. Note that this will requires a UPDI-capable programmer. An SPI-style ISP programmer will not work with this chip. This programming header also includes the USART.0 TX and RX signals in "UPDI+" layout, allowing single-cable programming and debug with a suitable programmer.
Finally, an extra 2-pin header is provided with another VCC and GND pin in case additional connections are required.
Reference icons are placed next to the pins used by the USART, I²C and SPI modules, and where the LED is connected, to remind you what functions those pins usually perform.
This board is supplied with two 10 pin header strips for the IO pins and one 2x3 pin for the programming connector.
The ATtiny1626 is one of the new AVR 1-series microcontrollers, containing xmega-style peripherals. These are more powerful and flexible than previous generations of ATmega and ATtiny chips.
This particular chip contains 16 KiB of flash and 2 KiB of RAM on an AVR CPU clocked at 20 MHz. It provides three 16bit PWM-capable timers, a 16bit realtime counter, two USARTs with fractional baud rate generator, a master/slave capable SPI interface, I²C interface, analog comparator, 12bit differential ADC with PGA, and in total 18 IO pins split across three ports. It also provides a 6-channel event system and configurable custom logic block that can route events between peripherals without waking the CPU.
Compared to the ATtiny1616, this chip adds a second USART unit, and fixes some bugs and missing features with the design of the TCB. It does remove the 12-bit dual output TCD timer and DAC output, though.
More information can be found on Microchip's website at https://www.microchip.com/wwwproducts/en/ATTINY1626
I wanted to experiment with the new AVR 2-series chips, but couldn't find any maker-oriented hardware for them.
I believe this may be the first use of an ATtiny1626, outside of the development boards produced by Microchip themselves.
|Size||AVR 1-series||AVR 2-series|
|8pin, 4KiB flash||ATtiny412||-|
|14pin, 8KiB flash||ATtiny814||ATtiny824|
|20pin, 16KiB flash||ATtiny1616||ATtiny1626|
|24pin, 32KiB flash||ATtiny3217||ATtiny3227|
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