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CPU board does not come with power supply, please check, if your
power supply match the requirements before you plug it to the CPU
board!
Power supply voltage:
9V
Power supply current (CPU board MB90F543 with Main board connected):
Single chip CPU mode, no external peripheral connected: 290mA max.
External bus mode, no peripheral connected: 350mA
External bus with:
keyboard connected: 450mA typical, but can vary with the keyboard used
(most of modern AT keyboard uses max. 100mA. User should check his
keyboard current requirements before connecting the keyboard to the
DevKit16 Mainboard).
keyboard and VGA interface connected: 650mA
Warning: If the DevKit16 is powered using the on-board stabilizer, the
supply current must not exceed the 1A limit of the stabilizer. Before
connecting any peripheral to the DevKit16, please check that its power
supply current requirements doesn’t does not cause this limit to be exceeded.