Specification	EFM32GG940F512-QFN64T

A/D Channels	8 count
A/D Resolution (bits)	12 bit
Connectivity	SPI, I2C, IrDA, USART, UART, SmartCard
Core Configuration	Single-Core
Core Processor	ARM® Cortex®-M3
Core Size (Bit Width)	32 Bit
D/A Channels	2 count
D/A Resolution (bits)	12 bit
Mounting Type	Surface Mount
Number of I/O	53
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Oscillator Type	Internal
Package / Case	64-VFQFN Exposed Pad
Package Length	9 mm
Package Name	64-QFN
Package Width	9 mm
Peripherals	LCD, DMA, PWM, POR, Reset, WDT, Brown-out Detect
Program Memory Depth	512 K
Program Memory Size	512 KB
Program Memory Type	FLASH
Program Memory Width	8 bit
RAM Size Depth	128 K
RAM Size Width	8 bit
Speed	48 MHz
Voltage - Supply (Vcc/Vdd) Maximum	3.8 V
Voltage - Supply (Vcc/Vdd) Minimum	1.85 V

EFM32GG940 Series

Part	Core Size (Bit Width)	Core Processor	Connectivity	A/D Resolution (bits)	D/A Channels	D/A Resolution (bits)	A/D Channels	Package Width	Package Name	Package Length	Oscillator Type	RAM Size Width	RAM Size Depth	Program Memory Type	Speed	Package / Case	Number of I/O	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Peripherals	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Program Memory Size	Program Memory Width	Program Memory Depth	Core Configuration
SILICON LABS EFM32GG940F1024G-E-QFN64	32 Bit	ARM® Cortex®-M3	I2C IrDA SmartCard SPI UART USART	12 bit	2 count	12 bit	8 count	9 mm	64-QFN	9 mm	Internal	8 bit	128 K	FLASH	48 MHz	64-VFQFN Exposed Pad	53	85 °C	-40 °C	Surface Mount	Brown-out Detect DMA LCD POR PWM Reset WDT	1.98 V	3.8 V	1 MB	8 bit	1 M	Single-Core
SILICON LABS EFM32GG940F1024G-E-QFN64R	32 Bit	ARM® Cortex®-M3	I2C IrDA SmartCard SPI UART USART	12 bit	2 count	12 bit	8 count	9 mm	64-QFN	9 mm	Internal	8 bit	128 K	FLASH	48 MHz	64-VFQFN Exposed Pad	53	85 °C	-40 °C	Surface Mount	Brown-out Detect DMA LCD POR PWM Reset WDT	1.98 V	3.8 V	1 MB	8 bit	1 M	Single-Core
SILICON LABS EFM32GG940F512-QFN64	32 Bit	ARM® Cortex®-M3	I2C IrDA SmartCard SPI UART USART	12 bit	2 count	12 bit	8 count	9 mm	64-QFN	9 mm	Internal	8 bit	128 K	FLASH	48 MHz	64-VFQFN Exposed Pad	53	85 °C	-40 °C	Surface Mount	Brown-out Detect DMA LCD POR PWM Reset WDT	1.85 V	3.8 V	512 KB	8 bit	512 K	Single-Core
SILICON LABS EFM32GG940F512-QFN64T	32 Bit	ARM® Cortex®-M3	I2C IrDA SmartCard SPI UART USART	12 bit	2 count	12 bit	8 count	9 mm	64-QFN	9 mm	Internal	8 bit	128 K	FLASH	48 MHz	64-VFQFN Exposed Pad	53	85 °C	-40 °C	Surface Mount	Brown-out Detect DMA LCD POR PWM Reset WDT	1.85 V	3.8 V	512 KB	8 bit	512 K	Single-Core

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EFM32GG940F512-QFN64T | Datasheet

A-00000442 Security Advisory

A-00000450 Security Advisory

A-00000449 Security Advisory

EFM32 Product Introduction