Mottek: 2004-02-03

Power trip

The problem of the module sucking too much power when the Newton is switched off turned out to be quite interesting. The 1.8V power used for the module core is turned off when the Newton is off. But the 3.3V for the I/O lines and the memory is still on. This causes the module to go into some weird state where it drains about 40-50mA. Now I've got to either find a 3.3V source which is also switched off, or a 1.8V source which is constantly on. There is already a candidate for the switched 3.3V source: The power supply for the PCMCIA slots...