参数资料
型号: STM32F103T6U7TR
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, QCC36
封装: 6 X 6 MM, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-36
文件页数: 41/80页
文件大小: 1067K
代理商: STM32F103T6U7TR
Electrical characteristics
STM32F103x4, STM32F103x6
Doc ID 15060 Rev 3
Note:
For CL1 and CL2 it is recommended to use high-quality ceramic capacitors in the 5 pF to
15 pF range selected to match the requirements of the crystal or resonator. CL1 and CL2, are
usually the same size. The crystal manufacturer typically specifies a load capacitance which
is the series combination of CL1 and CL2.
Load capacitance CL has the following formula: CL = CL1 x CL2 / (CL1 + CL2) + Cstray where
Cstray is the pin capacitance and board or trace PCB-related capacitance. Typically, it is
between 2 pF and 7 pF.
Caution:
To avoid exceeding the maximum value of CL1 and CL2 (15 pF) it is strongly recommended
to use a resonator with a load capacitance CL 7 pF. Never use a resonator with a load
capacitance of 12.5 pF.
Example: if you choose a resonator with a load capacitance of CL = 6 pF, and Cstray = 2 pF,
then CL1 = CL2 = 8 pF.
Figure 21.
Typical application with a 32.768 kHz crystal
5.3.7
Internal clock source characteristics
The parameters given in Table 24 are derived from tests performed under ambient
temperature and VDD supply voltage conditions summarized in Table 9.
Table 23.
LSE oscillator characteristics (fLSE = 32.768 kHz)
(1)
1.
Based on characterization, not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
RF
Feedback resistor
5
M
C(2)
2.
Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator
design guide for ST microcontrollers.
Recommended load capacitance
versus equivalent serial
resistance of the crystal (RS)
(3)
3.
The oscillator selection can be optimized in terms of supply current using an high quality resonator with
small RS value for example MSIV-TIN32.768kHz. Refer to crystal manufacturer for more details
RS = 30 k
15
pF
I2
LSE driving current
VDD = 3.3 V, VIN = VSS
1.4
A
gm
Oscillator Transconductance
5
A/V
tSU(LSE)
(4)
4.
tSU(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
startup time
VDD is stabilized
3
s
ai14146
OSC32_OU T
OSC32_IN
fLSE
CL1
RF
STM32F103xx
32.768 kH z
resonator
CL2
Resonator with
integrated capacitors
Bias
controlled
gain
相关PDF资料
PDF描述
SPC5632MF0MLQA4 FLASH, 40 MHz, MICROCONTROLLER, PQFP144
SAK-XC2264N-40F40L 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP100
SST55LC100-45-I-BWE FLASH MEMORY DRIVE CONTROLLER, PBGA84
ST7FLITE19BF0B6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP20
ST7PLITE15BF0B3 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP20
相关代理商/技术参数
参数描述
STM32F103T6U7XXX 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Low-density performance line, ARM-based 32-bit MCU with 16 or 32 KB Flash, USB, CAN, 6 timers, 2 ADCs, 6 communication interfaces
STM32F103T8 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
STM32F103T8H6TR 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
STM32F103T8H6XXX 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
STM32F103T8H7TR 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces