MSP430FR5729: 5729

jianxiang ruan

Prodigy 10 points

Part Number: MSP430FR5729

MSP430FR5729发现有内部时钟，外部接了12M的晶振，发现没有起振，需要如何配置吗？内部时钟可以满足I2C使用吗？

over 2 years ago

0 Xiaodong LI over 2 years ago

TI__Mastermind 23105 points

Hi jianxiang

内部时钟可以满足I2C使用吗？
Can the internal clock be fully used by I2C?
内部时钟DCO可以满足I2C的使用。精度是全温度±3.5%
The internal clock DCO can be used on I2C communication. the accuracy is ±3.5% at –40°C to 85°C temperature range

Thanks!

0 jianxiang ruan over 2 years ago in reply to Xiaodong LI

Prodigy 10 points

内部时钟频率还请告知一下，需要配置吗

0 Xiaodong LI over 2 years ago in reply to jianxiang ruan

TI__Mastermind 23105 points

内部时钟典型频率是8MHz, 请参考5.16 DCO Frequencies of MSP430FR572x Mixed-Signal Microcontrollers datasheet (Rev. C)

内部时钟需要配置，可以参考3.4.2 CSCTL1 Register of MSP430FR57xx Family User's Guide (Rev. D)

软件配置方法可以参考MSP430FR57xx_CS_01.c of MSP430FR573x, MSP430FR572x C Code Examples (IAR and CCS) (Rev. J)

多谢！

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MSP430FR5729: 5729