Specifications; Recommended Operating Conditions; Current Consumption - Silicon Laboratories BB52 Explorer Kit User Manual

2. Specifications

2.1 Recommended Operating Conditions

Parameter
USB Supply Input Voltage
Supply Input Voltage (VMCU supplied externally)
Operating Temperature
1 Not recommended for use with rechargeable Lithium batteries. Most Li-Ion and Li-Po cells exceed 3.6 V when fully charged
2 When using the provided interfaces with add-on boards or other external hardware, tighter voltage limits might apply

2.2 Current Consumption

The operating current of the board greatly depends on the application and the amount of external hardware connected. The table below
attempts to give some indication of typical current consumptions for the EFM8BB52 and the on-board debugger. Note that the numbers
are taken from the data sheets for the devices. For a full overview of the conditions that apply for a specific number from a data sheet,
the reader is encouraged to read the specific data sheet.
Parameter
EFM8BB52 Current Con-
1
sumption
On-board Debugger Sleep
2
Current Consumption
1 From EFM8BB52 data sheet
2 From EFM32GG12 data sheet
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1 , 2
Table 2.1. Current Consumption
Symbol
I MCU current consumption in NORMAL mode (module
BB
supply voltage = 3.3 V, f_SYSCLK = 49 MHz using
HFOSC, T 25 ˚C)
AMB
MCU current consumption in SNOOZE mode (module
supply voltage = 3.3 V, LFOSC running at 80 kHz, T
25 ˚C)
MCU current consumption in SHUTDOWN mode (module
supply voltage = 3.3 V, T
I On-board debugger current consumption when USB cable
DBG
is not inserted (EFM32GG12 EM4S mode current con-
sumption)
Symbol Min
V -
USB
V 1.8
VMCU
T -
OP
Condition
AMB
25 ˚C)
AMB
UG512: BB52 Explorer Kit User's Guide
Specifications
Typ Max Unit
5.0 - V
3.3 3.6 V
20 - ˚C
Typ Unit
2.79 mA
9.3 µA
0.24 µA
80 nA
Rev. 1.0 | 5