1.1.6 Charge Pump Threshold

The Charge Pump Threshold (CPT) bit indicates whether or not V_DD is at an acceptable operating level. Charge pump hardware compares V_DD to the threshold voltage (V_AUTO), which is fixed at 4.6V and is not configurable. If V_DD is above V_AUTO, the CPT bit is set (CPT = 1). If V_DD is below V_AUTO, CPT is clear (CPT = 0).