JAJSFO5C June 2018 – April 2021 TMP117
When MOD[1:0] bits are set to 11 in the configuration register, the TMP117 will run a temperature conversion referred to as a one-shot conversion. After the device completes a one-shot conversion, the device goes to the low-power shutdown mode. A one-shot conversion cycle, unlike the continuous conversion mode, only consists of the active conversion time and no standby period. Thus, the duration of a one-shot conversion is only affected by the AVG bit settings. The CONV bits do not affect the duration of a one-shot conversion. Figure 7-4 shows a timing diagram for this mode with an AVG setting of 00. At the end of a one-shot conversion, the Data_Ready and ALERT flag in the configuration register is set. The Data_Ready flag can be used to determine when the conversion completes. The user can perform an I2C read on the configuration register or temperature result register to clear the Data_Ready flag. The user can also set the DR/nAlert_EN bit in the configuration register to monitor the state of the Data_Ready flag on the ALERT pin.
One-shot mode cannot be programmed to a default start-up mode. If the EEPROM is programmed to be in one-shot mode on start-up, it will default to shutdown mode instead.