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参数资料
型号： STM32L151C8U6TR
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 32-BIT, FLASH, 32 MHz, RISC MICROCONTROLLER, QCC48
封装： 7 X 7 MM, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-48
文件页数： 66/106页
文件大小： 1417K
代理商： STM32L151C8U6TR
Electrical characteristics
STM32L151xx, STM32L152xx
62/106
Doc ID 17659 Rev 1
Figure 15.
Low-speed external clock source AC timing diagram
High-speed external clock generated from a crystal/ceramic resonator
The high-speed external (HSE) clock can be supplied with a 1 to 24 MHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on characterization
results obtained with typical external components specified in Table 24. In the application,
the resonator and the load capacitors have to be placed as close as 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).
Table 24.
HSE 1-24 MHz oscillator characteristics(1)(2)
1.
Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2.
Based on characterization results, not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC_IN Oscillator frequency
1
24
MHz
RF
Feedback resistor
200
k
Ω
C
Recommended load
capacitance versus
equivalent serial resistance
of the crystal (RS)
(3)
RS = 30 Ω
20
pF
i2
HSE driving current
VDD= 3.3 V, VIN =VSS
with 30 pF load
TBD
mA
IDD(HSE)
HSE oscillator power
consumption
C = 20 pF
fOSC = 16 MHz
TBD (startup)
TBD (stabilized)(4)
mA
C = 10 pF
fOSC = 16 MHz
TBD (startup)
TBD (stabilized)
gm
Oscillator transconductance
Startup
3.5
mA
/V
tSU(HSE)
(5)
Startup time
VDD is stabilized
1
ms
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