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STM32L021F4Ux
STMicroelectronics Arm Cortex-M0+ MCU, 16KB flash, 2KB RAM, 32 MHz, 1.65-3.6V, 16 GPIO, UFQFPN20
Schematic Symbol
Pin Configuration (20 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | PC14 | bidirectional |
| 2 | PC15 | bidirectional |
| 3 | NRST | input |
| 4 | VDDA | power_in |
| 5 | PA0 | bidirectional |
| 6 | PA1 | bidirectional |
| 7 | PA4 | bidirectional |
| 8 | PA5 | bidirectional |
| 9 | PA6 | bidirectional |
| 10 | PA7 | bidirectional |
| 11 | PB1 | bidirectional |
| 12 | VSS | power_in |
| 13 | VDD | power_in |
| 14 | PA9 | bidirectional |
| 15 | PA10 | bidirectional |
| 16 | PA13 | bidirectional |
| 17 | PA14 | bidirectional |
| 18 | PB6 | bidirectional |
| 19 | PB7 | bidirectional |
| 20 | PB9 | bidirectional |
Footprint
ConfirmedPackage_DFN_QFN/ST_UFQFPN-20_3x3mm_P0.5mm
Pad Layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pads (20)
| Number | Type |
|---|---|
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |