With only 8 pins there are 6 IO. However it’s clear there are many more bond pads on this die. We now see a die which is designed to be packaged in a variety of body styles: some with more pins, some less.
The die size is just a bit larger than the super-inexpensive PFS150. 0.403 mm2 vs 0.276 mm2.
For that die area one gets an 8 bit ADC,1 band gap (good for precision voltages) and 1x more 8 bit timer.
Below is the die annotated (the reason they are de-capping so many parts is to try to tease out what each block looks like. As features are added or removed it should have a visible effect on the design.)
See the blog post for additional details and close-ups.
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.