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UM2153 데이터시트(PDF) 53 Page - STMicroelectronics

부품명 UM2153
상세설명  Discovery kit for IoT node, multi-channel communicationwith STM32L4
PDF  57 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM2153 데이터시트(HTML) 53 Page - STMicroelectronics

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UM2153
Board revision history and limitations
56
Appendix C
Board revision history and limitations
Table 12. Board revision history and limitations
Board
Version
Revision details
Known limitations
MB1297
A
Not available; engineering samples
only
-
MB1297
B
Not available; engineering samples
only
-
MB1297
C-01
First official IoT Discovery kit
version with following changes
compared to MB1297C
schematics:
– Capacitor value for NFC
matching changed (C53 = 10 pF
instead of 47 pF and C71 =
10 pF instead of 47 pF)
– STSAFE-A100 (U9 component)
not fitted on MB1297C
– Firmware revision inside the
Wi-Fi module must be:
C3.5.2.3.BETA9. The Wi-Fi
module maximum output power
is limited to 9 dBm to fulfill
FCC/IC/CE requirements.
– A limitation is present on the
MB1297C-01 board. The reset
connexion between STM32L4
and the ST-LINK MCU
(STM32F103) is not present
even if schematics are correct.
The software reset is available
so that the hardware missing
reset may not be necessary. If
the hardware reset is needed, a
simple workaround is available
by soldering an external wire
between the SB2 and SB8.
– Firmware revision inside the
Wi-Fi module must be:
C3.5.2.3.BETA9. The Wi-Fi
module maximum output power
is limited to 9 dBm to fulfill
FCC/IC/CE requirements.
MB1297
D-01
Second official IoT Discovery kit.
No BOM changes compared to the
MB1297 C-01 BOM, that is C53 =
10pF, C71 = 10pF and STSAFE-
A100 (U9 component) not fitted.
Two pcb changes compared to the
MB1297 C-01 pcb:
– The reset connexion between
STM32L4 and the ST-LINK MCU
(STM32F103) is implemented of
the MB1297 rev D
– The pcb below the Wi-Fi antenna
has been removed to have more
Wi-Fi radiated output power
Firmware revision inside the Wi-Fi
module must be: C3.5.2.3.BETA9.
The Wi-Fi module maximum
output power is then limited to 9
dBm to fulfill FCC/IC/CE
requirements.



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