Preliminary
...the world's most energy friendly microcontrollers
3.10 Analog Comparator (ACMP)
Table 3.13. ACMP
Symbol
VACMPIN
VACMPCM
Parameter
Condition
Min
Typ
Max
Unit
V
Input voltage range
0
0
VDD
VDD
ACMP Common
V
Mode voltage range
BIASPROG=0b0000, FULL-
BIAS=0 and HALFBIAS=1 in
ACMPn_CTRL register
0.1
2.87
195
0
µA
µA
µA
µA
BIASPROG=0b1111, FULL-
BIAS=0 and HALFBIAS=0 in
ACMPn_CTRL register
IACMP
Active current
BIASPROG=0b1111, FULL-
BIAS=1 and HALFBIAS=0 in
ACMPn_CTRL register
Internal voltage reference off.
Using external voltage refer-
ence
Current consump-
tion of internal volt-
age reference
IACMPREF
Internal voltage reference
Single ended
5
10
10
17
39
µA
mV
VACMPOFFSET Offset voltage
Differential
mV
VACMPHYST
ACMP hysteresis
Programmable
mV
CSRESSEL=0b00 in
ACMPn_INPUTSEL
kOhm
CSRESSEL=0b01 in
ACMPn_INPUTSEL
71
104
136
kOhm
kOhm
kOhm
Capacitive Sense
Internal Resistance
RCSRES
CSRESSEL=0b10 in
ACMPn_INPUTSEL
CSRESSEL=0b11 in
ACMPn_INPUTSEL
tACMPSTART
Startup time
10 µs
The total ACMP current is the sum of the contributions from the ACMP and its internal voltage reference
as given in Equation 3.1 (p. 29) . IACMPREF is zero if an external voltage reference is used.
Total ACMP Active Current
IACMPTOTAL = IACMP + IACMPREF
(3.1)
www.silabs.com
2013-10-09 - EFM32ZG108FXX - d0063_Rev0.60
29
SILICONIMAGE [ Silicon image ]
