ST STM32L053 - Page 31

UM1775 Rev 4 31/39
UM1775 Hardware layout
38
VSS 35----------
GND
25 10 - 5 -
VSS 47----------
GND
-25- 6 -
VSSA 8 - - --------
GND
-
-
---
- - ----------
NC
24 24 - - -
1. Signals available depending on SBx value. Refer to Table 7: Solder bridges.
2. Connected through a resistor
Table 8. Extension connectors (continued)
MCU pin Board function
Main function LQFP48 pin num. SYSTEM VCP PushButtons LED NFC CR95HF-B USB USER Linear touch sensor E-paper Display Idd Measure Free I/O Power Supply P2 P3 CN1 CN3 SBx
(1)