问答21ic问答首页 - stm32f303cct6中Vbat内部两个电阻是50k，有范围值吗
stm32f303cct6中Vbat内部两个电阻是50k，有范围值吗
| Table 80. VBAT monitoring characteristics |
| Symbol | Parameter | Min | Typ | Max | Unit |
| R | Resistor bridge for VBAT | - | 50 | - | KΩ |
| Q | Ratio on VBAT measurement | - | 2 | - | |
| Er(1) | Error on Q | -1 | - | +1 | % |
| T S_vbat (1)(2) | ADC sampling time when reading the VBAT 1mV accuracy | 2.2 | - | - | µs |
2. Shortest sampling time can be determined in the application by multiple iterations.
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2021-04-05
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