各位专家,想咨询一下28377S的内核1.2V在什么情况下外部供,什么情况下用内部的,有没有什么讲究和注意?
Seven Han:F2837x是需要加外部的1.2V电源,内部不支持。
5.8.1 Power Sequencing
An external power supply must be used to supply 3.3 V to VDDIO, VDD3VFL, VDDOSC, and VDDA and to
provide 1.2 V to VDD. The internal VREG is not supported; therefore, the VREGENZ pin must be tied high
to 3.3 V. The supplies should ramp to full rail within 10 ms. Table 5-3 shows the supply ramp rate.
各位专家,想咨询一下28377S的内核1.2V在什么情况下外部供,什么情况下用内部的,有没有什么讲究和注意?
mangui zhang:内核电压是需要外部提供的最好参考EVM板设计