CMS32L051 User Manual |Chapter 23 Voltage Detection Circuit
www.mcu.com.cn 654 / 703
Table 23-1 Format of user option bytes (000C1H) (2/2)
Address: 000C1H
7 6 5 4 3 2 1 0
LVD is OFF (Use RESETB External reset of the pin)
Note 1 You must write 1 to bit4.
2. When the supply voltage rises, the reset state must be maintained by the voltage detection circuit or external reset
before the supply voltage reaches the working voltage range shown in the AC characteristics of the data sheet;
When the supply voltage drops, it must be reset through deep sleep mode transfer, voltage detection circuitry, or
external reset before the supply voltage drops below the operating voltage range.
The operating voltage range depends on the setting of the user option byte (000C2H).
Note 1 ×: Ignore
2. The detection voltage is TYP Value. For details, please refer to the LVD circuit characteristics in the data sheet.