STM32L151RBH6TR STMicroelectronics, STM32L151RBH6TR Datasheet - Page 70

• Manufacturer Part Number: STM32L151RBH6TR
• Description: ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Low Power MCU
• Manufacturer: STMicroelectronics

Specifications of STM32L151RBH6TR

• Product Category: ARM Microcontrollers - MCU
• Rohs: yes
• Core: ARM Cortex M3
• Data Bus Width: 32 bit

Electrical characteristics
Note:
Caution:
70/121
For C
15 pF range selected to match the requirements of the crystal or resonator (see
C
capacitance which is the series combination of C
Load capacitance C
C
between 2 pF and 7 pF.
To avoid exceeding the maximum value of C
to use a resonator with a load capacitance C
capacitance of 12.5 pF.
Example: if you choose a resonator with a load capacitance of C
then C
Figure 17. Typical application with a 32.768 kHz crystal
L1
stray
and C
Resonator with
integrated capacitors
L1
is the pin capacitance and board or trace PCB-related capacitance. Typically, it is
L1
and C
= C
L2,
L2
are usually the same size. The crystal manufacturer typically specifies a load
C L2
C L1
L2
= 8 pF.
, it is recommended to use high-quality ceramic capacitors in the 5 pF to
L
32.768 kH z
resonator
has the following formula: C
Doc ID 17659 Rev 8
OSC32_OU T
OSC32_IN
R F
L1
L
controlled
≤ 7 pF. Never use a resonator with a load
and C
Bias
gain
L1
L
= C
and C
STM32L151x6/8/B, STM32L152x6/8/B
L2
L1
(15 pF) it is strongly recommended
x C
L2
STM32L15xxx
.
L2
f LSE
/ (C
L
= 6 pF and C
L1
+ C
L2
) + C
stray
Figure
stray
ai17853
= 2 pF,
where
17).