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UM1574 bảng dữ liệu(PDF) 33 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Discovery kit for STM8A microcontrollers
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UM1574 bảng dữ liệu(HTML) 33 Page - STMicroelectronics

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UM1574
Hardware and layout
Doc ID 023645 Rev 1
33/48
4.3.6
STM8AL board solder bridges
1.
Default SBx state is shown in bold.
4.3.7
STM8AL board jumpers selection
Table 8.
STM8AL board solder bridges
Bridge
State
Description
SB1 (Reserved)
ON
Reserved, do not modify.
SB2
(STM_RST)
OFF
NRST signal of STM32F103C8T6 (ST-LINK/V2) is not connected to GND.
ON
NRST signal of STM32F103C8T6 (ST-LINK/V2) is connected to GND.
SB3 (MCO)
OFF
MCO clock from STM32F103C8T6 is not connected to PA2 (OSC_IN) of
STM8AL3L68T.
ON
MCO clock from STM32F103C8T6 is connected to PA2 (OSC_IN) of STM8AL3L68T.
SB4, 5 (Reserved)
OFF
Reserved, do not modify.
SB6, 7, 8
(IDD circuitry)
ON
IDD measurement circuitry and features connected.
OFF
IDD measurement circuitry and features are not connected (freeing PF0, PC4 and
PE6).
SB9, 10
(Xtal 32.768 kHz)
OFF
PC5 and PC6 of STM8AL3L68T are free for general purpose I/Os.
ON
PC5 and PC6 of STM8AL3L68T are connected to 32.768 kHz crystal oscillator (if
fitted on board).
SB11
(L99PM62GXP
Reset)
OFF
NRESET of L99PM62GXP is not connected to STM8AL3L68T Reset pin (external
watchdog disable).
ON
NRESET of L99PM62GXP is connected to STM8AL3L68T Reset pin (external
watchdog enable).
SB12 (Reserved)
ON
Reserved, do not modify.
SB13, 14 (USB5V)
ON
USB5V is distributed on CN3/CN4 connectors (USB5V can drive an external board
connected to CN3 and CN4).
OFF
USB5V is not distributed on CN3/CN4 connectors.
SB15, 16 (Reserved)
ON
Reserved, do not modify.
Table 9.
STM8AL board jumpers selection
Jumper
State(1)
1.
Default jumper state is shown in bold.
Description
JP1 (Reserved)
OFF
Reserved, do not modify.
JP2 (IDD)
1-2 OFF Ibias measurement selection.
2-3 ON
IDD measurement selection.
JP3 (Reserved)
2-3
Reserved, do not modify.



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