EFM32LG995F256 Energy Micro, EFM32LG995F256 Datasheet - Page 41

• Manufacturer Part Number: EFM32LG995F256
• Description: ARM Microcontrollers - MCU 256KB FL 32KB RAM
• Manufacturer: Energy Micro

Specifications of EFM32LG995F256

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: Leopard Gecko (LG)
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.85 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: BGA-120
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• Interface Type: I2C, SPI, USB, UART
• Number Of Programmable I/os: 93
• Program Memory Type: Flash

3.13 Analog Comparator (ACMP)
2012-09-11 - EFM32LG995FXX - d0124_Rev1.00
Table 3.18. ACMP
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. 41) . I
Total ACMP Active Current
Symbol
V
V
I
I
V
V
R
ACMP
ACMPREF
ACMPIN
ACMPCM
ACMPOFFSET
ACMPHYST
CSRES
Parameter
Input voltage range
ACMP Common Mode volt-
age range
Active current
Current consumption of in-
ternal voltage reference
Offset voltage
ACMP hysteresis
Capacitive Sense Internal
Resistance
I
Preliminary
ACMPTOTAL
ACMPREF
Condition
BIASPROG=0b0000, FULL-
BIAS=0 and HALFBIAS=1 in
ACMPn_CTRL register
BIASPROG=0b1111, FULL-
BIAS=0 and HALFBIAS=0 in
ACMPn_CTRL register
BIASPROG=0b1111, FULL-
BIAS=1 and HALFBIAS=0 in
ACMPn_CTRL register
Internal voltage reference off.
Using external voltage refer-
ence
Internal voltage reference
Single ended
Differential
Programmable
CSRESSEL=0b00 in
ACMPn_INPUTSEL
CSRESSEL=0b01 in
ACMPn_INPUTSEL
CSRESSEL=0b10 in
ACMPn_INPUTSEL
CSRESSEL=0b11 in
ACMPn_INPUTSEL
= I
is zero if an external voltage reference is used.
ACMP
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41
+ I
ACMPREF
Min
0
0
Typ
www.energymicro.com
2.87
195
104
136
0.1
10
10
17
39
71
0
5
Max
V
V
DD
DD
Unit
V
V
µA
µA
µA
µA
µA
mV
mV
mV
kOhm
kOhm
kOhm
kOhm
(3.1)