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STM32L052K8U3TR 数据手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
32位控制器
封装:
QFN
描述:
STMICROELECTRONICS STM32L052K8U3TR 微控制器, 32位, ARM 皮质-M0, 32 MHz, 64 KB, 8 KB, 32 引脚, UFQFPN
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P37P38P40P41P42P44P46P48P50Hot
典型应用电路图在P76P94
封装尺寸在P110P112P114P116P118P120P122P124P126P128
型号编码规则在P58P129
技术参数、封装参数在P54
电气规格在P52P54P56P58P60P62P64P66P68P70P72P74
导航目录
STM32L052K8U3TR数据手册
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Electrical characteristics STM32L052x6 STM32L052x8
76/134 DocID025936 Rev 5
time. Refer to the crystal resonator manufacturer for more details on the resonator
characteristics (frequency, package, accuracy).
Note: For information on selecting the crystal, refer to the application note AN2867 “Oscillator
design guide for ST microcontrollers” available from the ST website www.st.com.
Figure 22. Typical application with a 32.768 kHz crystal
Note: An external resistor is not required between OSC32_IN and OSC32_OUT and it is forbidden
to add one.
Table 45. LSE oscillator characteristics
(1)
Symbol Parameter Conditions
(2)
Min
(2)
Typ Max Unit
f
LSE
LSE oscillator frequency - 32.768 - kHz
G
m
Maximum critical crystal
transconductance
LSEDRV[1:0]=00
lower driving capability
--0.5
µA/V
LSEDRV[1:0]= 01
medium low driving capability
- - 0.75
LSEDRV[1:0] = 10
medium high driving capability
--1.7
LSEDRV[1:0]=11
higher driving capability
--2.7
t
SU(LSE)
(3)
Startup time V
DD
is stabilized - 2 - s
1. Guaranteed by design, not tested in production.
2. Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator design guide for
ST microcontrollers”.
3. Guaranteed by characterization results, not tested in production. t
SU(LSE)
is the startup time measured from the moment it
is enabled (by software) to a stabilized 32.768 kHz oscillation is reached. This value is measured for a standard crystal
resonator and it can vary significantly with the crystal manufacturer. To increase speed, address a lower-drive quartz with a
high- driver mode.
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