iPAC-8xx7 and μPAC-7186EG support Data Logger function. Since iPAC-8xx7 and μPAC-7186EG have 128K bytes of FRAM that displace the battery retained SRAM(X607/608 or S256/512) and with the properties of low power necessity, high data retaining, non-volatile and fast read/write accessing. It can plugged one piece of IO expansion board for μPAC-7186EG. Those properties make iPAC-8xx7 and μPAC-7186EG more efficient and applications especially in Data logger function.