EFM32WG842 Datasheet, PDF (49/78 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

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3.14 Voltage Comparator (VCMP)
Table 3.19. VCMP
Symbol
Parameter
Condition
Min
V_VCMPIN
V_VCMPCM
Input voltage range
VCMP Common
Mode voltage range
I_VCMP
Active current
BIASPROG=0b0000 and
HALFBIAS=1 in VCMPn_CTRL
register
BIASPROG=0b1111 and
HALFBIAS=0 in VCMPn_CTRL
register. LPREF=0.
t_VCMPREF
Startup time refer- NORMAL
ence generator
V_VCMPOFFSET Offset voltage
Single ended
Differential
V_VCMPHYST
VCMP hysteresis
t_VCMPSTART
Startup time
Typ
Max
V_DD
V_DD
Unit
V
V
0.3
0.6 µA
22
35 µA
10
µs
10
mV
10
mV
61
210 mV
10 µs
The V_DD trigger level can be configured by setting the TRIGLEVEL field of the VCMP_CTRL register in
accordance with the following equation:
VCMP Trigger Level as a Function of Level Setting
V_{DD Trigger Level}=1.667V+0.034 ×TRIGLEVEL
(3.2)
2014-06-13 - EFM32WG842FXX - d0196_Rev1.40
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