The PCB board has two sides. One side for pin pitch size 0.5mm (compatibale for 32 to 100 pins). The other side for pin pitch size 0.8mm (Compatible for 32 to 64 pins).This board can be use for QFP, TQFP, , LQFP package chips (commly for 32P, 44P, 64P, 80P, and 100P. e.g. QFP32, QFP100, TQFP44, etc). It can be use for STC89C series, ATmega series, and MSP430 series.