CLK32IN16CLK32OUT15FIRE5FIREIN7RIREDOWN6RSTN13VIO3VIO22XIN1XOUT2INTN8LOADT18ENSTOP126ENSTOP225EN_START32GND28GND21GND4SSN9SO12SI11SENSET17SCK10PT419PT320PT223PT124STOP227STOP130START31VCC29VCC14EP33