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DevKit16 Power Supply
Requirements
DevKit16 doesn’t come with power supply, please check, if
your one match the requirements before you plug it to
DevKit16!
•
Power supply voltage:
9V
•
Power supply current (CPU board MB90F543 with Main board):
•
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
W E R E C O M M E N D U S I N G 9 V S T A B I L I Z E D P O W E R S U P P L Y
W I T H 1 . 5 A ( M I N . ) O U T P U T C U R R E N T . I F T H E P O W E R
S U P P L Y C A N N O T D E L I V E R C U R R E N T S A S S P E C I F I E D I N
T H E S P E C I F I C A T I O N A B O V E , T H E D E V K I T 1 6 W I L L N O T
W O R K P R O P E R L Y – T H E B O A R D W I L L B E P E R I O D I C A L L Y
R E S E T B Y T H E M B 3 7 7 1 P O W E R S U P P L Y S U P E R V I S O R .
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.
Chapter
12
