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TDC7200: TDC7200 Register 00 is written to 03, and TRI has no signal output

Part Number: TDC7200
Other Parts Discussed in Thread: TDC1000


TDC7200 enable has also tried to use IO control to pull up the enable after 3.3V power supply.

The current process is:

Chip power on - initialize SPI - enable pull up - write register

At present, register reading and writing are as follows:

After 0x03 is written in 0x00 register of 7200, it is not reset to 0 as specified in the specification

The schematic diagram is as follows: tdc7200


  • Hello Kevin,

    It looks like your system is reading the registers correctly. Wiriting 0x03 to register CONFIG1 (0x00) will only clear the INT_STATUS register (0x02) as well as the result registers TIME1 to TIME6, CLOCK_COUNT1 to CLOCK_COUNT5, CALIBRATION1, CALIBRATION2 (registers 0x10 to 0x1C). Can you provide more information on what registers are not being reset to 0 as mentioned in the specification?