JAJSHI3C March 2019 – October 2019 TPS23881
COMMAND = 4Bh with 1 Data Byte, Read Only
|LEGEND: R/W = Read/Write; R = Read only; -n = value after reset|
|7-0||Cn_7- Cn_0||R||0||8-bit data conversion result of capacitance measurement for channel n.
Most recent capacitance measurement result. The I2C data transmission is a 1-byte transfer.
The equation defining the resistance measured is:
C = N × CSTEP
Where CSTEP is defined below as well as the full scale value:
|Useable Resistance Range||CSTEP|
|1 µF to 12 µF||0.05 µF|
Note that the register content is not cleared at turn off.
Note: The capacitance measurement is only supported in Manual/Diagnostic mode.
Note: No capacitance measurement will be made if the result of the resistance detection is returned as "valid".
Note: The TPS23881 SRAM needs to be programmed in order for the capacitance measurement to operate properly.