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STM32L021D4 Datasheet(PDF) 35 Page - STMicroelectronics

Part # STM32L021D4
Description  Access line ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, 16KB Flash, 2KB SRAM, 512B EEPROM, ADC, AES
PDF  114 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L021D4 Datasheet(HTML) 35 Page - STMicroelectronics

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STM32L021x4
Pin descriptions
42
Figure 7. STM32L021x4 TSSOP20 pinout
1. The above figure shows the package top view.
Figure 8. STM32L021x4 TSSOP14 pinout
1. The above figure shows the package top view.
Table 11. Legend/abbreviations used in the pinout table
Name
Abbreviation
Definition
Pin name
Unless otherwise specified in brackets below the pin name, the pin function during
and after reset is the same as the actual pin name
Pin type
S
Supply pin
I
Input only pin
I/O
Input / output pin
I/O structure
FT
5 V tolerant I/O
FTf
5 V tolerant I/O, FM+ capable
TTa
3.3 V tolerant I/O directly connected to the ADC
TC
Standard 3.3V I/O
B
Dedicated BOOT0 pin
RST
Bidirectional reset pin with embedded weak pull-up resistor



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