The 2-wire serial interface accepts both I C and standard system management bus (SMBus) write byte, read byte, send byte, and receive byte commands to program the alarm thresholds and to read voltage and temperature data. Voltage data is scaled so that when the nominal voltage is present at a pin (e.g., 3.3V for the 3.3VIN pin), the conversion result is equal to 3/4 of the ADC full-scale range or a decimal count of 192 (Table 3). The temperature data format is 7 bits plus sign, with each data bit representing 1C, in two's complement format (Table 2). The MAX6652 has only one address pin, ADD. One of four different address codes can be selected by connecting the ADD pin to GND, V CC , SDA, or SCL. 2