Hi,
We make an intelligent rocker product with the CC2564MODA, which is matched with STM32F407VE.
After burning FW, according to the datasheet, the normal power on sequence should be as follows:
but our board RTS is always low level and there is no change process of H - > L.
what may lead to this problem?
And CTS is abnormal,The voltage at terminal A of shift IC is 1.8V, terminal B is 0V:
The hardware refers to the public circuit.The measured voltage and 32.768KHz clock signal are normal.UART_RX is high,UART_TX is low.
The attached file is the circuit diagram for your reference.
Look forward to your reply!
Lisa
