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STM32L021D4 Datasheet(PDF) 104 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) 104 Page - STMicroelectronics

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STM32L021x4
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DocID027982 Rev 5
UFQFPN20 device marking
The following figure gives an example of topside marking versus pin 1 position identifier
location.
Other optional marking or inset/upset marks, which depends assembly location, are not
indicated below.
Figure 41. Example of UFQFPN20 marking (package top view)
1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity.



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