STM32L041X4 Datasheet, PDF (43/119 Pages) STMicroelectronics – Access line ultra-low-power 32-bit MCU ARM-based Cortex-M0+, up to 32KB Flash, 8KB SRAM, 1KB EEPROM, ADC, AES

STM32L041x4/6
Pin number
Table 15. Pin definitions (continued)
Pin descriptions
Pin name
(function
after reset)
Pin
type
Note
Alternate
functions
Additional functions
1 A5 27 1 31 31 44
BOOT0
I
--
-
-
- - - - - 32 45
PB8
I/O FTf -
I2C1_SCL
-
- - - - - - 46
PB9
I/O FTf -
EVENTOUT,
I2C1_SDA
-
- - 28 - 32 - 47
VSS
S
-
-
-
-
- - 1 - 1 1 48
VDD
S
-
-
-
-
1. VSS pins are connected to the exposed pad (see Figure 40: UFQFPN32, 5 x 5 mm, 32-pin package outline).
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