EFR32BG12P232F Datasheet, PDF (9/181 Pages) Silicon Laboratories – EFR32BG12 Blue Gecko Bluetooth ®Low Energy SoC Family Data Sheet

3. System Overview
EFR32BG12 Blue Gecko Bluetooth ^®Low Energy SoC Family Data Sheet
System Overview
3.1 Introduction
The EFR32 product family combines an energy-friendly MCU with a highly integrated radio transceiver. The devices are well suited for
any battery operated application as well as other systems requiring high performance and low energy consumption. This section gives a
short introduction to the full radio and MCU system. The detailed functional description can be found in the EFR32xG12 Wireless
Gecko Reference Manual.
A block diagram of the EFR32BG12 family is shown in Figure 3.1 Detailed EFR32BG12 Block Diagram on page 4. The diagram
shows a superset of features available on the family, which vary by OPN. For more information about specific device features, consult
Ordering Information.
SUBGRF_IP
SUBGRF_IN
SUBGRF_OP
SUBGRF_ON
2G4RF_IOP
2G4RF_ION
RESETn
Debug Signals
(shared w/GPIO)
PAVDD
RFVDD
IOVDD
AVDD
DVDD
VREGVDD
VREGSW
DECOUPLE
LFXTAL_P
LFXTAL_N
HFXTAL_P
HFXTAL_N
RFSENSE
BALUN
Radio Transceiver
Sub-GHz RF
I
LNA
DEMOD
PA
Q
2.4 GHz RF
I
LNA
PA
Q
PGA
Frequency
Synthesizer
To RF
Frontend
Circuits
IFADC
AGC
MOD
Serial Wire
and ETM
Debug /
Programming
Reset
Management
Unit
Brown Out /
Power-On
Reset
Energy Management
Voltage
Monitor
bypass
DC-DC
Voltage
Converter Regulator
ARM Cortex-M4 Core
Up to 1024 KB ISP Flash
Program Memory
Up to 256 KB RAM
Memory Protection Unit
Floating Point Unit
LDMA Controller
Watchdog
Timer
Clock Management
ULFRCO
AUXHFRCO
LFRCO
LFXO
HFRCO
HFXO
AA
HP
BB
Port I/O Configuration
Digital Peripherals
LETIMER
TIMER
CRYOTIMER
PCNT
RTC / RTCC
USART
LEUART
Port
Mapper
I2C
CRYPTO
CRC
LESENSE
Analog Peripherals
IDAC
VDAC
Internal
Reference
Op-Amp
VDD
12-bit ADC
Temp
Sense
Capacitive
Sense
+
-
Analog Comparator
IOVDD
Port A
Drivers
Port B
Drivers
Port C
Drivers
Port D
Drivers
Port F
Drivers
Port I
Drivers
Port J
Drivers
Port K
Drivers
PAn
PBn
PCn
PDn
PFn
PIn
PJn
PKn
Figure 3.1. Detailed EFR32BG12 Block Diagram
3.2 Radio
The Blue Gecko family features a radio transceiver supporting Bluetooth^® Low Energy and proprietary short range wireless protocols.
3.2.1 Antenna Interface
The 2.4 GHz antenna interface consists of two pins (2G4RF_IOP and 2G4RF_ION) that interface directly to the on-chip BALUN. The
2G4RF_ION pin should be grounded externally.
The external components and power supply connections for the antenna interface typical applications are shown in the RF Matching
Networks section.
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