DocID022136 Rev 5
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UM1460
Hardware layout and configuration
66
Note:
LED LD9 is lit when the STM3241G-EVAL evaluation board is powered by 5 V correctly.
2.2 Boot
option
The STM3241G-EVAL evaluation board is able to boot from:
•
Embedded user Flash
•
System memory with boot loader for ISP
•
Embedded SRAM for debugging
The boot option is configured by setting switch SW1 (BOOT1) and SW2 (BOOT0). BOOT0
can also be configured via RS-232 connector CN16.
JP18
(cont.)
To select
USB-OTG FS
(CN8) power supply, set JP18 as shown:
To select
USB-OTG HS
(CN9)power supply, set JP18 as shown:
To select
power supply jack
(CN18) power supply to both
STM3241G-EVAL and daughterboard connected on CN1 and
CN3, set JP18 as shown (
daughterboard must not have its own
power supply connected
)
JP19
To connect Vbat to the battery, set JP19 as shown:
To connect Vbat to 3.3V power, set JP19 as shown:
(Default setting)
Table 2. Power related jumpers and solder bridges (continued)
Jumper
Description
HS
FS
DTB
PSU
STlk
HS
FS
DTB
PSU
STlk
HS
FS
DTB
PSU
STlk
3
2
1
3
2
1
Table 3. Boot related jumpers
BOOT 0
BOOT 1
Boot source
0
1 or 0
STM3241G-EVAL boots from
User Flash
(Default setting)
1
1
STM3241G-EVAL boots from
Embedded SRAM
1
0
STM3241G-EVAL boots from
System Memory
Downloaded from
Downloaded from
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