ST STM32 NUCLEO-L053R8 User Manual

Nucleo-64 boards information UM1724
64/68 UM1724 Rev 14
7.2 Board revision history
Revision C-01
The revision C-01 is the initially released version.
Revision C-02
Add LSE:
• X2(32 KHz)
• R34 and R36 changed from OFF to 0 Ω
• C31 and C32 changed from OFF to 10 pF
• SB48 and SB49 changed from ON to OFF
Remove HSE:
• SB16 and SB50 changed from OFF to ON
• SB55 changed from ON to OFF
Note that for the NUCLEO-L4xxRx Nucleo-64 boards:
• SB16 and SB50 must be OFF.
• SB55 changed must be ON.
Revision C-03
• X2 changed to ABS25-32.768KHZ-6-TB
• C31 and C32 changed from 10 pF to 4.3 pF
• C26 changed from 2.2 µF to 4.7 µF
Revision C-04
• T2 changed from STS7PF30L to STS9P3LLH6
7.3 Board known limitations
Revisions C-01 to C-04
None

ST STM32 NUCLEO-L053R8 Specifications

General

Microcontroller	STM32L053R8
Core	ARM Cortex-M0+
Operating Frequency	32 MHz
Flash Memory	64 KB
SRAM	8 KB
EEPROM	2 KB
GPIO Pins	51
Digital I/O Pins	51
On-board Debugger	ST-LINK/V2-1
Timers	5
Communication Interfaces	I2C, SPI, USART
Connectors	Arduino Uno V3, ST morpho
USB	USB 2.0 FS device