EFM32 Gecko Family
EFM32TG Data Sheet
The EFM32 Gecko MCUs are the world’s most energy-friendly mi-
crocontrollers.
The EFM32TG offers unmatched performance and ultra low power consumption in both
active and sleep modes. EFM32TG devices consume as little as 0.6 μA in Stop mode
and 150 μA/MHz in Run mode. It also features autonomous peripherals, high overall chip
and analog integration, and the performance of the industry standard 32-bit ARM Cortex-
M3 processor, making it perfect for battery-powered systems and systems with high-per-
formance, low-energy requirements.
EFM32TG applications include the following:
• Smart metering
• Water metering
• Gas metering
• Industrial and home automation
• Alarm and security systems
• Health and fitness applications
KEY FEATURES
• ARM Cortex-M3 at 32 MHz
• Ultra low power operation
• 0.6 μA current in Stop (EM3), with
brown-out detection and RAM retention
• 51 μA/MHz in EM1
• 150 μA/MHz in Run mode (EM0)
• Fast wake-up time of 2 µs
• Hardware cryptography (AES)
• Up to 32 kB of Flash and 4 kB of RAM
Core / Memory
ARM Cortex
TM
Clock Management
High Frequency
Crystal Oscillator
Auxiliary High
Freq. RC Osc.
Low Frequency
Crystal Oscillator
High Frequency
RC Oscillator
Low Freq.
RC Oscillator
Watchdog
Oscillator
Energy Management
Voltage
Regulator
Voltage
Comparator
Security
Hardware AES
M3 processor
Flash Program
Memory
RAM Memory
Debug Interface
DMA Controller
Power-on
Reset
Brown-out
Detector
32-bit bus
Peripheral Reflex System
Serial Interfaces
USART
I
2
C
I/O Ports
External
Interrupts
General
Purpose I/O
Timers and Triggers
Timer/Counter
LESENSE
Analog Interfaces
ADC
Operational
Amplifier
LCD Controller
DAC
Analog
Comparator
Low Energy Timer
Real Time Counter
Low Energy
UART
TM
Pin Reset
Pulse Counter
Watchdog Timer
Lowest power mode with peripheral operational:
EM0 - Active
EM1 - Sleep
EM2 – Deep Sleep
EM3 - Stop
EM4 - Shutoff
silabs.com
| Building a more connected world.
Rev. 2.11
EFM32TG Data Sheet
Feature List
1. Feature List
• ARM Cortex-M3 CPU platform
• High Performance 32-bit processor @ up to 32 MHz
• Wake-up Interrupt Controller
• SysTick System Timer
• Flexible Energy Management System
• 20 nA @ 3 V Shutoff Mode
• 0.6 µA @ 3 V Stop Mode, including Power-on Reset, Brown-out Detector, RAM and CPU retention
• 1.0 µA @ 3 V Deep Sleep Mode, including RTC with 32.768 kHz oscillator, Power-on Reset, Brown-out Detector, RAM and CPU
retention
• 51 µA/MHz @ 3 V Sleep Mode
• 150 µA/MHz @ 3 V Run Mode, with code executed from flash
• 32/16/8 KB Flash
• 4/2 KB RAM
• Up to 56 General Purpose I/O pins
• Configurable push-pull, open-drain, pull-up/down, input filter, drive strength
• Configurable peripheral I/O locations
• 16 asynchronous external interrupts
• Output state retention and wake-up from Shutoff Mode
• 8 Channel DMA Controller
• 8 Channel Peripheral Reflex System (PRS) for autonomous inter- peripheral signaling
• Hardware AES with 128/256-bit keys in 54/75 cycles
• Timers/Counters
• 2× 16-bit Timer/Counter
• 2×3 Compare/Capture/PWM channels
• 16-bit Low Energy Timer
• 1× 24-bit Real-Time Counter
• 1× 16-bit Pulse Counter
• Watchdog Timer with dedicated RC oscillator @ 50 nA
• Integrated LCD Controller for up to 8×20 segments
• Voltage boost, adjustable contrast and autonomous animation
• Communication interfaces
• Up to 2× Universal Synchronous/Asynchronous Receiver/ Transmitter
• UART/SPI/SmartCard (ISO 7816)/IrDA/I2S
• Low Energy UART
• Autonomous operation with DMA in Deep Sleep Mode
• I
2
C Interface with SMBus support
• Address recognition in Stop Mode
• Ultra low power precision analog peripherals
• 12-bit 1 Msamples/s Analog to Digital Converter
• 8 single ended channels/4 differential channels
• On-chip temperature sensor
• 12-bit 500 ksamples/s Digital to Analog Converter
• Up to 2× Analog Comparator
• Capacitive sensing with up to 8 inputs
• 3× Operational Amplifier
• 6.1 MHz GBW, Rail-to-rail, Programmable Gain
• Supply Voltage Comparator
• Low Energy Sensor Interface (LESENSE)
• Autonomous sensor monitoring in Deep Sleep Mode
• Wide range of sensors supported, including LC sensors and capacitive buttons
• Ultra efficient Power-on Reset and Brown-Out Detector
silabs.com
| Building a more connected world.
Rev. 2.11 | 2
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