Solder Bridges; Table 6. Solder Bridges - ST STM32L152RCT6 Discovery kit User Manual

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Solder bridges

Bridge
SB18,20
(2)
(X3 crystal)
SB7,9,11,13
(DEFAULT)
SB6,8,10,12
(RESERVED)
SB1,2,14
(IDD_Measurement)
SB15,16
(X2 crystal)
SB5
(B2-RESET)
SB4
(B1-USER)
SB21
(VDD powered from 3 V)
SB22
(Battery enable)
SB100 (NRST)
SB101 (SWO)
SB102 (STM_RST)

Table 6. Solder bridges

(1)
State
PH0, PH1 are connected to P1 (X3, C21, C22, R30 must not
ON
be fitted).
X3, C21, C22 and R30 provide a clock as shown in
Electrical schematics.
OFF
PH0, PH1 are disconnected from P1.
ON Reserved, do not modify.
OFF Reserved, do not modify.
PA0, PA4, PC13 are used by the I
ON
JP1 ON.
PA0, PA4, PC13 are available and IDD module cannot be
OFF
used JP1 OFF.
X2, C16, C17 and R28 deliver a 32 KHz clock.
OFF
PC14, PC15 are not connected to P1.
PC14, PC15 are only connected to P1. Do not remove X2,
ON
C16, C17, R28.
B2 Pushbutton is connected to the NRST pin of the
ON
STM32L152 MCU.
B2 Pushbutton is not connected the NRST pin of the
OFF
STM32L152 MCU.
ON B1 Pushbutton is connected to PA0.
OFF B1 Pushbutton is not connected to PA0.
ON V is powered from 3 V, SB22 must be OFF.
DD
OFF V is not powered from 3 V, SB22 must be ON.
DD
V is not powered by the CR2032 battery, SB21 must be
DD
OFF
ON.
ON V is powered by the CR2032 battery, SB21 must be OFF.
DD
The NRST signal of the CN2 connector is connected to the
ON
NRST pin of the STM32L152RCT6.
The NRST signal of the CN2 connector is not connected to the
OFF
NRST pin of the STM32L152RCT6.
ON The SWO signal of the CN2 connector is connected to PB3.
OFF The SWO signal is not connected.
OFF No incidence on STM32L152RCT6 NRST signal.
ON STM32L152RCT6 NRST signal is connected to GND.
DocID018789 Rev 4
Hardware and layout
Description
Section 7:
measurement.
DD
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