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EFR32FG12P232F1024GM48-B Datasheet(PDF) 8 Page - Silicon Laboratories

Part # EFR32FG12P232F1024GM48-B
Description  EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

EFR32FG12P232F1024GM48-B Datasheet(HTML) 8 Page - Silicon Laboratories

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3. 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 EFR32FG12 family is shown in Figure 3.1 Detailed EFR32FG12 Block Diagram on page 3. 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.
Analog Peripherals
Clock Management
HFRCO
IDAC
ARM Cortex-M4 Core
Up to 1024 KB ISP Flash
Program Memory
Up to 256 KB RAM
A
H
B
Watchdog
Timer
RESETn
Digital Peripherals
Port
Mapper
Port I/O Configuration
Analog Comparator
12-bit ADC
Temp
Sense
VDD
Internal
Reference
IOVDD
AUXHFRCO
LFXO
ULFRCO
HFXO
Memory Protection Unit
LFRCO
A
P
B
LDMA Controller
+
-
Floating Point Unit
Energy Management
DVDD
VREGVDD
VREGSW
bypass
AVDD
PAVDD
RFVDD
DECOUPLE
IOVDD
Voltage
Monitor
Radio Transceiver
2G4RF_IOP
2G4RF_ION
2.4 GHz RF
PA
I
Q
LNA
Frequency
Synthesizer
DEMOD
AGC
IFADC
MOD
PGA
SUBGRF_OP
SUBGRF_ON
Sub-GHz RF
I
Q
PA
SUBGRF_IP
SUBGRF_IN
LNA
To RF
Frontend
Circuits
BALUN
RFSENSE
VDAC
Op-Amp
Capacitive
Sense
LESENSE
CRC
CRYPTO
I2C
LEUART
USART
RTC / RTCC
PCNT
CRYOTIMER
TIMER
LETIMER
Port K
Drivers
PKn
Port J
Drivers
PJn
Port I
Drivers
PIn
Port F
Drivers
PFn
Port D
Drivers
PDn
Port C
Drivers
PCn
Port B
Drivers
PBn
Port A
Drivers
PAn
HFXTAL_P
HFXTAL_N
LFXTAL_P
LFXTAL_N
Voltage
Regulator
DC-DC
Converter
Debug Signals
(shared w/GPIO)
Brown Out /
Power-On
Reset
Reset
Management
Unit
Serial Wire
and ETM
Debug /
Programming
Figure 3.1. Detailed EFR32FG12 Block Diagram
3.2 Radio
The Flex Gecko family features a radio transceiver supporting proprietary 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.
EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
System Overview
silabs.com | Building a more connected world.
Rev. 1.0 | 3


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