SBOSA15A september 2022 – may 2023 TMP1827
PRODUCTION DATA
The supply powered mode uses the VDD pin connected to the same supply rail as the host and pullup resistor. TI recommends to place a 0.1-µF bypass capacitor close to the VDD pin of the TMP1827.
The pullup resistor value of 5.1 kΩ is large enough to provide proper communication with standard speed and avoid VOL violation when the device is sending data to the host. The user may change the value based on the total bus load and application operating requirements.
The communication protocol for supply powered mode is same as that for bus powered mode, which allows the entire software stack to be reused. This mode of operation is useful for onboard thermal sensing applications as it provides for continuous conversion and alert function.