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STM32L431CBYx
STMicroelectronics Arm Cortex-M4 MCU, 128KB flash, 64KB RAM, 80 MHz, 1.71-3.6V, 39 GPIO, WLCSP49
Schematic Symbol
Pin Configuration (49 pins)
| Pin | Name | Type |
|---|---|---|
| A1 | VDD | power_in |
| A2 | PA14 | bidirectional |
| A3 | PB3 | bidirectional |
| A4 | PB4 | bidirectional |
| A5 | PH3 | bidirectional |
| A6 | VSS | power_in |
| A7 | VDD | power_in |
| B1 | VSS | passive |
| B2 | PA13 | bidirectional |
| B3 | PA15 | bidirectional |
| B4 | PB5 | bidirectional |
| B5 | PB8 | bidirectional |
| B6 | VBAT | power_in |
| B7 | PC13 | bidirectional |
| C1 | PA11 | bidirectional |
| C2 | PA10 | bidirectional |
| C3 | PA12 | bidirectional |
| C4 | PB6 | bidirectional |
| C5 | PB9 | bidirectional |
| C6 | PC15 | bidirectional |
| C7 | PC14 | bidirectional |
| D1 | PA8 | bidirectional |
| D2 | PA9 | bidirectional |
| D3 | PB15 | bidirectional |
| D4 | PB7 | bidirectional |
| D5 | NRST | input |
| D6 | PH1 | bidirectional |
| D7 | PH0 | bidirectional |
| E1 | PB14 | bidirectional |
| E2 | PB13 | bidirectional |
| E3 | PB10 | bidirectional |
| E4 | PA3 | bidirectional |
| E5 | PA2 | bidirectional |
| E6 | PC3 | bidirectional |
| E7 | VSSA | power_in |
| F1 | PB12 | bidirectional |
| F2 | PB11 | bidirectional |
| F3 | PA7 | bidirectional |
| F4 | PA6 | bidirectional |
| F5 | PA5 | bidirectional |
| F6 | PA0 | bidirectional |
| F7 | VDDA | power_in |
| G1 | VDD | power_in |
| G2 | VSS | passive |
| G3 | PB2 | bidirectional |
| G4 | PB1 | bidirectional |
| G5 | PB0 | bidirectional |
| G6 | PA4 | bidirectional |
| G7 | PA1 | bidirectional |
Footprint
ConfirmedPackage_CSP/ST_WLCSP-49_Die435
Pad Layout
A1
A2
A3
A4
A5
A6
A7
B1
B2
B3
B4
B5
B6
B7
C1
C2
C3
C4
C5
C6
C7
D1
D2
D3
D4
D5
D6
D7
E1
E2
E3
E4
E5
E6
E7
F1
F2
F3
F4
F5
F6
F7
G1
G2
G3
G4
G5
G6
G7
Pads (49)
| Number | Type |
|---|---|
| A1 | smd |
| A2 | smd |
| A3 | smd |
| A4 | smd |
| A5 | smd |
| A6 | smd |
| A7 | smd |
| B1 | smd |
| B2 | smd |
| B3 | smd |
| B4 | smd |
| B5 | smd |
| B6 | smd |
| B7 | smd |
| C1 | smd |
| C2 | smd |
| C3 | smd |
| C4 | smd |
| C5 | smd |
| C6 | smd |
| C7 | smd |
| D1 | smd |
| D2 | smd |
| D3 | smd |
| D4 | smd |
| D5 | smd |
| D6 | smd |
| D7 | smd |
| E1 | smd |
| E2 | smd |
| E3 | smd |
| E4 | smd |
| E5 | smd |
| E6 | smd |
| E7 | smd |
| F1 | smd |
| F2 | smd |
| F3 | smd |
| F4 | smd |
| F5 | smd |
| F6 | smd |
| F7 | smd |
| G1 | smd |
| G2 | smd |
| G3 | smd |
| G4 | smd |
| G5 | smd |
| G6 | smd |
| G7 | smd |