Graootoly 10Pcs/Lot Rewritable RFID Contact Memory Key RW1990 IButton for Copy Card Cards

Produktbeschreibung

The microcircuit supports the ROM Search 1-Wire Protocol function, which makes it possible for multiple devices to work on bus. These RW1990 we use an , which passed performance than others, the CMOS microcircuit is basically a 64-bit single digital code electronic . 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. 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 reading and writing of the data are performed by thian bit forward.