EFM32LG995F256 Energy Micro, EFM32LG995F256 Datasheet - Page 27

• 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

2012-09-11 - EFM32LG995FXX - d0124_Rev1.00
Symbol
I
C
R
R
C
f
t
t
t
t
SNR
ADCREF
ADCCLK
ADCCONV
ADCACQ
ADCACQVDD3
ADCSTART
ADCIN
ADCIN
ADCFILT
ADCFILT
ADC
Parameter
Current consumption of in-
ternal voltage reference
Input capacitance
Input ON resistance
Input RC filter resistance
Input RC filter/decoupling
capacitance
ADC Clock Frequency
Conversion time
Acquisition time
Required acquisition time
for VDD/3 reference
Startup time of reference
generator and ADC core in
NORMAL mode
Startup time of reference
generator and ADC core in
KEEPADCWARM mode
Signal to Noise Ratio
(SNR)
Preliminary
Condition
MODE in ADCn_CTRL set to
0b00
10 kSamples/s 12 bit, internal
1.25 V reference, WARMUP-
MODE in ADCn_CTRL set to
0b01
10 kSamples/s 12 bit, internal
1.25 V reference, WARMUP-
MODE in ADCn_CTRL set to
0b10
Internal voltage reference
6 bit
10 bit
12 bit
Programmable
1 MSamples/s, 12 bit, single
ended, internal 1.25V refer-
ence
1 MSamples/s, 12 bit, single
ended, internal 2.5V refer-
ence
1 MSamples/s, 12 bit, single
ended, V
1 MSamples/s, 12 bit, differ-
ential, internal 1.25V refer-
ence
1 MSamples/s, 12 bit, differ-
ential, internal 2.5V reference
DD
...the world's most energy friendly microcontrollers
reference
27
Min
11
13
1
7
1
2
Typ
www.energymicro.com
250
63
64
65
10
59
63
65
60
65
2
5
1
Max
256 ADC-
13 MHz
Unit
µA
µA
µA
pF
MOhm
kOhm
fF
ADC-
CLK
Cycles
ADC-
CLK
Cycles
ADC-
CLK
Cycles
CLK
Cycles
µs
µs
µs
dB
dB
dB
dB
dB