C8051F850-C-GM Datasheet, PDF (230/328 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

22.11. Supply Monitor Control Registers
Register 22.2. VDM0CN: Supply Monitor Control
Bit
7
6
5
4
3
2
1
0
Name VDMEN VDDSTAT
Reserved
Type
RW
R
R
Reset
X
X
X
X
X
X
X
X
SFR Address: 0xFF
Table 22.2. VDM0CN Register Bit Descriptions
Bit
Name
Function
7
VDMEN Supply Monitor Enable.
This bit turns the supply monitor circuit on/off. The supply monitor cannot generate sys-
tem resets until it is also selected as a reset source in register RSTSRC. Selecting the
supply monitor as a reset source before it has stabilized may generate a system reset. In
systems where this reset would be undesirable, a delay should be introduced between
enabling the supply monitor and selecting it as a reset source.
0: Supply Monitor Disabled.
1: Supply Monitor Enabled.
6
VDDSTAT Supply Status.
This bit indicates the current power supply status (supply monitor output).
0: V_DD is at or below the supply monitor threshold.
1: V_DD is above the supply monitor threshold.
5:0
Reserved Must write reset value.
207
Rev. 1.0