**We now have 60 in stock which will be put up for sale pending test and photography. Using the SSOP package and significantly narrower overall footprint makes the board quite different

A simple breakout board for one of the less popular ATTiny microcontroller series, despite being possibly the second best classic tiny, all around (first place of course goes to the insanely well-peripheralled 841) - In the spirit of my other breakout boards. One can debate the ranking of various parts all day for classic tinyAVRs other than the stand-out 841. The 167 is a strong contender for second place, having 16k of flash, ond of the few fractional baud rate generators on classic parts and an above average ADC, but is not the only contender. The ATtiny167 is supported by my ATTiny core ATTiny core on github

Board features

• Supports ATtiny x7 product line in TSSOP
• Pads for ISP header, accepting both SMD or through-hole pin header
• Pads for crystal and 0805 loading caps.
• 6-pin FTDI header (TX/RX going to appropriate pins on x7)
• Pads for DTR-reset cap, jumper to enable it, and diode to prevent reset from exceeding Vcc (for x7 only)
• External pullup (10k) on reset.
• Pads for bypass and filter caps.
• Pads for 1117-series SOT-223 regulator + input cap
• PTC fuse for short circuit protection on input

Why the x7

The ATTiny x7 series, which comes in 16k and 8k versions, are the only ATTiny with a LIN port (this LIN can also be used as a UART), as well as an asynchronous timer.

The ATTiny x61 series, which comes in 2k, 4k, and 8k sizes, are designed specifically for driving BLDC motors. and are available in DIP packages. Hence there is no reason for a dedicated breakout board.

Board Features

• Need improved ADC accuracy? Cut the bridge next to the regulator and install ferrite bead inductor L1 (10yH is appropriate).

Required parts (not included)

See pictures for placement

• ATtiny 167, 87,microcontroller
• 0805 Resistor, 10k
• 2x 0805 Capacitor, 0.1uf (3 if using autoreset on x7)
• 1206 Capacitor, 1uf or input cap as specified by regulator mfg
• Output capacitor as recommended by regulator mfg, 0805
• 1117-series voltage regulator (optional)
• HC-49/US (SMD or TH) or radial (garbage can shaped) and appropriate 0805 loading caps (optional)
• 2x 12-pin 0.1" pin header (or 2x8 black, 1x4 each red and green)
• 1x 6-pin 0.1" pin header ( optional - FTDI header)
• 1x 2x3 pin 0.1" pin header (ISP)
• 1206 LED and appropriate 0805 resistor (optional)- SOT-23 dual schottky diode, common cathode. (if using autoreset on x7) these are like 2 cents each on aliexpress, Do I think they meet full spec? I'd say that's even money. But anything resembling the original specs is easily sufficient. You'll note I connect both anodes - they also make diodes like this where there's only one diode - this way no matter which pin is the n/c pin, as long as the cathode is toward the solitary pin, it'll work. Doesn't have to be schottky for this, evem, but schottky ones are very useful, and often come at the same price point, so if you're gonna be buying a SOT=23 diode, you might as well get a dual diode, and you might as well get a schottky. It's still like $2 shipped from china, for 50 of them.