User`s manual
Functional Overview
2.6 Power Supply Circuit
Rev.1.01
Jan 31, 2008
2-14
REJ10J1262-0101
2
2.6 Power Supply Circuit
In the M3A-HS11, the 5V power supply is input to the board and it generates 3.3V and 1.5V by using a regulator.
The used regulator uses an output voltage-controlled type so that a desired voltage value can be generated by
changing the resistance.
Figure 2.6.1 shows the block diagram of power supply circuit in the M3A-HS11.
5V
Extension Connector
SDRAM
Power Switch
External Power
Supply (J5)
5VCC
5VCC
3VCC
5V
3.3V
1.5VCC_CPU
VCC
AVCC
SH7211
SRAM
5V
1.5V
5VCC
1.5VCC
VCCQ
AVREF
A/D,D/A Connector (J7)
Extension Connector
JP
5VCC
JP
External Power
Supply (J6)
1.5VCC_EX
3VCC_CPU
AVCC
AVREF
3VCC_EX
A/D,D/A Connector (J7)
JP1
JP2
Figure 2.6.1 Block Diagram of Power Supply Circuit