EFM32JG1 Datasheet, PDF (4/94 Pages) Silicon Laboratories – The EFM32 Jade Gecko MCUs are the world’s most energyfriendly microcontrollers

3. System Overview
EFM32JG1 Data Sheet
System Overview
3.1 Introduction
The EFM32JG1 product family is 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 MCU system. The detailed functional description can be
found in the EFM32JG1 Reference Manual.
A block diagram of the EFM32JG1 family is shown in Figure 3.1 Detailed EFM32JG1 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 Order-
ing Information.
Serial Wire
RESETn
DVDD
VREGVDD
VREGSW
VREGVSS
VSS
HFXTAL_P
HFXTAL_N
Debug /
Programming
Hardware
ARM Cortex-M3 Core
Up to 256 KB ISP Flash
Program Memory
Reset
Reset
Management
Unit
Voltage
Monitor / Brown
Out Detector
Up to 32 KB RAM
Memory Protection Unit
DMA Controller
Power Net
bypass
DC-DC
Converter
Watchdog
Timer
Clock Configuration
LFXTAL_P
LFXTAL_N
ULFRCO
LFXO
HFXO
HFRCO
AUXHFRCO
LFRCO
AA
HP
BB
Port I/O Configuration
Digital Peripherals
LETIMER
TIMER
CRYOTIMER
PCNT
RTC / RTCC
USART
Port
Mapper
LEUART
I2C
CRYPTO
CRC
Analog Peripherals
Internal
Reference
IDAC
VDD
VREF
12-bit ADC
VDD
Temp
Sensor
+
-
Analog Comparator
Figure 3.1. Detailed EFM32JG1 Block Diagram
Port A
Drivers
Port B
Drivers
Port C
Drivers
Port D
Drivers
Port F
Drivers
IOVDD
PAn
PBn
PCn
PDn
PFn
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