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参数资料
| 型号： | STM32F103ZDT6XXX |
| 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, PQFP144 |
| 封装： | 20 X 20 MM, 0.50 MM PITCH, ROHS COMPLIANT, LQFP-144 |
| 文件页数： | 75/122页 |
| 文件大小： | 1599K |
| 代理商： | STM32F103ZDT6XXX |
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Electrical characteristics
STM32F103xC, STM32F103xD, STM32F103xE
Doc ID 14611 Rev 6
same size. The crystal manufacturer typically specifies a load capacitance which is the
series combination of CL1 and CL2. PCB and MCU pin capacitance must be included (10 pF
can be used as a rough estimate of the combined pin and board capacitance) when sizing
CL1 and CL2. Refer to the application note AN2867 “Oscillator design guide for ST
microcontrollers” available from the ST website www.st.com.
Figure 21.
Typical application with an 8 MHz crystal
1.
REXT value depends on the crystal characteristics.
Low-speed external clock generated from a crystal/ceramic resonator
The low-speed external (LSE) clock can be supplied with a 32.768 kHz 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).
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 (see Figure 22).
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
Table 24.
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
ai14145
OSC_OU T
OSC_IN
fHSE
CL1
RF
STM32F103xx
8 MH z
resonator
REXT(1)
CL2
Resonator with
integrated capacitors
Bias
controlled
gain
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STM32F103ZDT7TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103ZDT7XXX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103ZDY6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103ZDY6XXX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103ZDY7TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
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