This document identifies an error in the control logic that affects parts TSC2000, TSC2200, TSC2300, TSC2301, and TSC2302. This error can cause incorrect operation in certain scenarios when a user is writing to the ADC Control Register (page 1, register 00). This error occurs when the user attempts to put the part into a self-control mode and the internal oscillator is not running. It is possible that the register write may not actually be latched and used by the part in this situation. However, this problem can be circumvented easily by following the sequence described below.