SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
An additional external clock source is supported on GPIO133 (AUXCLKIN). This must be a single-ended 3.3V external clock. AUXCLKIN can be used as the clock source for the USB, CAN, and Communication Manager Subsystem. Frequency limits and timing requirements can be found in the TMS320F28P65x Real-Time Microcontrollers Data Sheet. The external clock must be connected directly to the GPIO133 pin, as shown in Figure 3-9.