Mautacly 10Pcs/Lot Rewritable RFID Memory Key RW1990 IButton for Copy Card Cards - 2659965-vfvdfdc

• These RW1990 we use an one, which passed performance than others, the CMOS microcircuit is basically a 64-bit single digital code electronic . The microcircuit supports the Search 1-Wire Protocol function, which makes it possible for multiple devices to work on one bus. This Protocol determines the conditions of alteration of the state of the bus and the time intervals during the synchronization by means of the interruptions of -pulses of the control device. The code is stored in internal non-volatile memory. Data exchange is performed by the 1-Wire Protocol, which requires a single data pin and the common pin. The reading and writing of the data are performed by thian bit forward.