...
Microcontroller https://www.silabs.com/documents/public/data-sheets/C8051F34x.pdf
LCD Controller http://www.holtek.com/productdetail/-/vg/ht1621
...
Microcontroller https://www.silabs.com/documents/public/data-sheets/C8051F34x.pdf
LCD Controller http://www.holtek.com/productdetail/-/vg/ht1621