I have a BC 127 module hooked up with a PIC ( tx and rx) . The BC127 is powered as per configuration Fixed Voltage Application1 in the documentation.( Pins 30,31,32,33 to VCC 3.3V) . Vregen and Reset not connected.
When left a long time the module does not start at first power application. Seems to be totally locked.After a bit if power cycled again the module starts. Seems that a cap is charged and allows the module to start…