UM2407 Rev 1
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UM2407
Hardware layout and configuration
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Figure 12. Power supply input from 5V_EXT (5 V, 500 mA max)
6.4.4
External power supply input from USB CHARGER (5 V)
When STM32H7 Nucleo-144 board is power supplied by a USB charger on CN1 (see
Table 8
and
Table 13
), the jumper configuration must be the following: Jumper JP2 on
pin 7-8 "CHGR".
Figure 13. Power supply input from ST-LINK USB connector with USB charger (5 V)
6.4.5
External power supply input from 3V3_EXT (3.3 V)
When the 3.3 V is provided by a shield board, it is interesting to use the 3V3 (CN8 pin 7 or
CN11 pin 16) directly as power input (see
Table 9
and
Figure 14
). In this case the
programming and debugging features are not available, since the ST-LINK is not powered.
06Y9
8
9B(;7
9
9
Table 8. External power sources: CHGR (5 V)
Input power name
Connector pins
Voltage range
Max current
CHGR
CN1
5 V
-
06Y9
12'(%8*
&1
9
9
86%&+$5*(5
9
