8.3 Board revision history
Table 22. Board revision history
Board reference Board variant and revision Board change description Board limitations
MB1549
C02
Initial revision
SWDIO: Because of the level shifter
to support 1V8 MCU debugging, it
is recommended to set the SWDIO
frequency to 8 MHz.
C03
BOM improvement:
• Update C57 and C58
capacitors from 4.7 to 1.8 pF
for 32 KHz CLOAD adaptation
• Include STM32U575ZIT6Q with
new embedded RSS
SWDIO: Because of the level shifter
to support 1V8 MCU debugging, it
is recommended to set the SWDIO
frequency to 8 MHz.
C04
BOM improvement:
• Update C57 and C58
capacitors from 1.8 to 6.8 pF
32 KHz CLOAD link to STM32
32 KHz update
• Update the user button
management with debounce
SW (removed C84, R38) and
update R39 to 0 Ω
SWDIO: Because of the level shifter
to support 1V8 MCU debugging, it
is recommended to set the SWDIO
frequency to 8 MHz.
UM2861
Board revision history
UM2861 - Rev 5
page 42/49
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