EFM8UB2 Datasheet, PDF (10/50 Pages) Silicon Laboratories – The EFM8UB2 highlighted features are listed below

4. Electrical Specifications
EFM8UB2 Data Sheet
Electrical Specifications
4.1 Electrical Characteristics
All electrical parameters in all tables are specified under the conditions listed in Table 4.1 Recommended Operating Conditions on page
9, unless stated otherwise.
Table 4.1. Recommended Operating Conditions
Parameter
Symbol Test Condition
Operating Supply Voltage on VDD V_DD
Operating Supply Voltage on VRE- V_REGIN
GIN
System Clock Frequency
f_SYSCLK
Operating Ambient Temperature T_A
Note:
1. All voltages with respect to GND
2. The USB specification requires 3.0 V minimum supply voltage.
Min
Typ
Max
Unit
2.7²
3.3
3.6
V
2.7
—
5.25
V
0
—
48
MHz
-40
—
85
°C
Table 4.2. Power Consumption
Parameter
Symbol
Digital Core Supply Current
Normal Mode-Full speed with code I_DD
executing from flash
Idle Mode—Core halted with pe- I_DD
ripherals running
Suspend Mode-Core halted and I_DD
high frequency clocks stopped,
Supply monitor off. Regulators in
low-power mode.
Stop Mode—Core halted and all I_DD
clocks stopped, Regulators in low-
power mode, Supply monitor off.
Shutdown Mode—Core halted and I_DD
all clocks stopped,Regulators Off,
Supply monitor off.
Analog Peripheral Supply Currents
High-Frequency Oscillator 0
I_HFOSC0
Low-Frequency Oscillator
I_LFOSC
Test Condition
F_SYSCLK = 48 MHz²
F_SYSCLK = 24 MHz²
F_SYSCLK = 80 kHz³
F_SYSCLK = 48 MHz²
F_SYSCLK = 24 MHz²
F_SYSCLK = 80 kHz³
LFO Running
LFO Stopped
Operating at 48 MHz,
T_A = 25 °C
Operating at 80 kHz,
T_A = 25 °C
Min
Typ
Max
Unit
—
12
14
mA
—
7
8
mA
—
280
—
μA
—
6.5
8
mA
—
3.5
5
mA
—
220
—
μA
—
105
—
μA
—
100
—
μA
—
100
—
μA
—
0.25
—
μA
—
900
—
μA
—
5
—
μA
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.2 | 9