To perform data communications, the master device mounted on the system outputs the start condition signal to the slave device. Next, the master device outputs 7-bit length device address and a l-bit length read/write instruction code onto the SDA bus.
| SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNIT |
| VFS IFSS | Flag 'low' Flag voltage Flag saturation current | normal operation IF = 1.6 mA VFS=10V | | 0.15 1 5 | 0.4 | V mA |
| IFS VPSF V(CL)FS | Flag 'high' Flag leakage current Protection supply threshold voltage Flag clamping voltage | overload or fault VFS=10V VFF = 5 V; RF = 3 kl ; BUK104-50L BUK104-50S IF = 1 mA; Vps = 0 V | 2.5 3.3 1 1 | 3.3 4.2 1 3 | 1 0 4 5 | cCA V V V |
| RF | Application information Suitable external pull-up resistance | VFF =5 V VFF =10 V | 1 2 | 1 0 20 | 50 1 00 | l |
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