STM32F302CCT6TR 查看數據表（PDF） - STMicroelectronics

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STM32F302CCT6TR

ARM Cortex-M4F 32b MCU+FPU, up to 256KB Flash+48KB SRAM 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V operation

STMicroelectronics 

STM32F302xx/STM32F303xx

Electrical characteristics

Note:

For CL1 and CL2, it is recommended to use high-quality external ceramic capacitors in the

5 pF to 25 pF range (typ.), designed for high-frequency applications, and selected to match

the requirements of the crystal or resonator (see Figure 16). 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. 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.

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 16. Typical application with an 8 MHz crystal

2ESONATORWITH

INTEGRATEDCAPACITORS

#,

-( Z

RESONATOR

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2&

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CON TROLLED

GAIN

#,

2%84 /3#?/5 4

1. REXT value depends on the crystal characteristics.

F(3 %

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Doc ID 023353 Rev 5

77/133

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