Hello,
I successfully built an application using the MSP430F1122 that sleeps most of the time (using a 32khz crystal) and then when it wakes up uses the DCO to generate a 19.2kb data stream. I need reasonable accuracy on the data stream.
It is battery operated and low current is required of course.
It all worked fine till I used a 150K resistor on "RSELx". I needed this to reduce temperature drift of the DCO. The effect on current is a very significant increase.
I can't reduce the current. Is the DCO permanently on when an external resistor is connected to this RSELx pin (P2.5)?
Any help wuld be much appreciated;
Thanks - Richard Holmes