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STM32F446RCT6 数据手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
微控制器
封装:
LQFP-64
描述:
STMICROELECTRONICS STM32F446RCT6 微控制器, 32位, 高性能, ARM 皮质-M4, 180 MHz, 256 KB, 128 KB, 64 引脚, LQFP
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典型应用电路图在P105P106P145
封装尺寸在P175P176P177P178P179P180P181P182P183P184P185P186
型号编码规则在P195
标记信息在P177
技术参数、封装参数在P74P116
电气规格在P72P73P74P75P76P77P78P79P80P81P82P83
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STM32F446RCT6数据手册
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Electrical characteristics STM32F446xC/E
106/201 DocID027107 Rev 5
possible to the oscillator pins in order to minimize output distortion and startup stabilization
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 26. Typical application with a 32.768 kHz crystal
6.3.10 Internal clock source characteristics
The parameters given in Table 41 and Table 42 are derived from tests performed under
ambient temperature and V
DD
supply voltage conditions summarized in Table 16.
High-speed internal (HSI) RC oscillator
Table 40. LSE oscillator characteristics (f
LSE
= 32.768 kHz)
(1)
1. Guaranteed by design.
Symbol Parameter Conditions Min Typ Max Unit
R
F
Feedback resistor - - 18.4 - MΩ
I
DD
LSE current consumption - - - 1 µA
ACC
LSE
(2)
2. This parameter depends on the crystal used in the application. Refer to application note AN2867.
LSE accuracy - -500 - 500 ppm
G
m
_crit_max
Maximum critical crystal
g
m
Startup low-power mode - - 0.56
µA/V
Startup high-drive mode - - 1.5
t
SU(LSE)
(3)
3. 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 guaranteed based on test during characterization. It is
measured for a standard crystal resonator and it can vary significantly with the crystal manufacturer.
startup time V
DD
is stabilized - 2 - s
DL
26&B28 7
26&B,1
I
/6(
&
/
5
)
670)
N+]
UHVRQDWRU
5HVRQDWRUZLWK
LQWHJUDWHGFDSDFLWRUV
%LDV
FRQWUROOHG
JDLQ
&
/
Table 41. HSI oscillator characteristics
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
HSI
Frequency - - 16 - MHz
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