Renesas M3A-HS60 - Manual (Page 26)

Functional Overview
2.6 Power Supply Circuit
Rev.1.00 June 1,2005 2-12
REJ11J0002-0100Z
2
2.6 Power Supply Circuit
The M3A-HS60 accepts a 5V power supply as its input, and generates 3.3V and 1.25V by using a regulator.
The regulator used here is an output voltage variable type, so that any desired voltage can be generated by changing
the resistance value.
Figure2.6.1 shows a block diagram of power supply circuit in the M3A-HS60.
5V
5V ->
3.3V
5V ->
1.25V
Extension connector
SH7206
External
power supply J3
SDRAM
Flash
memory
Extension connector
External
power supply J5
1
2
3
JP1
JP2
1
2
3
SW1
Figure2.6.1 Block Diagram of Power Supply Circuit