STMicroelectronics STM32L152D-EVAL User Manual page 10

Hardware layout and configuration
Table 2.
Jumper
JP5
JP10
Note: Due to some peripheral component specifications, the low voltage limitations (component
will not work correctly when power level is under low voltage limitation) related to the
operating voltage of the peripherals are shown in
Table 3.
Peripheral
USB
MicroSD Card
SRAM
EEPROM
RF EEPROM
Note: The recommended AC220 V to DC5 V power adapter is the PSU-5V2A. It is not included
with the board but can be ordered from ST as a separate item. You can also use another
equivalent 5 V power adapter (polarity compatible with CN2) to power the STM32L152D-
EVAL board via the CN2 power jack on the board.
To order the recommended power supply, use the order code PSU-5V2A.
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Power supply jumper settings (continued)
VDD is connected to fixed +3.3 V DC power when JP5 is set as shown to
the right: (Default setting)
VDD is connected to adjustable DC power from 1.65 V to 3.6 V when
JP5 is set as shown to the right:
VDD power is directly connected to MCU VDD when JP10 is set as
shown to the right (Default setting):
Note: For manual I measurement the jumper on JP10 must be
DD
removed and replaced by an ampermeter connected between pin 1 and
2 of JP10.
Connect VDD power to MCU with current-sampling resister, 1 Ohm or
1 KOhm, in series for I current measurement when JP10 is set as
DD
shown to the right:
Low voltage limitation
Component
CN15
CN3
U5
U25
CN12
Doc ID 022868 Rev 1
Description
Table 3.
I/O name
USB
SDIO
FSMC
SPI
I2C
UM1521
Setting
Low voltage limitation
3 V
2.7 V
2.4 V
1.8 V
1.8 V