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Chapter 19
Internal Voltage Comparator
Preliminary User’s Manual U14913EE1V0UM00
19.2.1 Internal voltage comparator control register (VCMPM)
The VCMPN0 register is an 8-bit register, which defines the operation mode of internal voltage compa-
rator. This register can be read/ written in 8- or 1-bit units.
7
6
5
4
3
2
1
0
Address
At Reset
VCMPM
VCEN
NSOCE
EFBK
0
EDN1
EDN0
EDM1
EDM0
FFFFF860H
00H
Bit Name
Function
VCEN
Voltage Comparator Enable
Enables or disables internal voltage comparator.
0: Disabled
1: Enabled
NSOCE
NMI Source
Selects NMI source.
0: NMI from external pin input
1: NMI from internal voltage comparator
Note:
Once set this bit to 0, reset signal only make this bit to 0.
EFBK
Enable Feedback
Enables or disables comparator feedback.
0: Disabled
1: Enabled
EDN1, EDN0 Edge detect control for NMI
EDN1
EDN0
Detect Mode
0
0
No detect
0
1
Positive edge
1
0
Negative edge
1
1
Both edges
EDM1, EDM0 Edge detect control for INT
EDM1
EDM0
Toggle Mode
0
0
No detect
0
1
Positive edge
1
0
Negative edge
1
1
Both edges
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