Specification	EFM32WG840F64-B-QFN64

Connectivity	IrDA, SmartCard, I2C, UART/USART, SPI
Core Processor	ARM® Cortex®-M4F
Core Size	32-Bit Single-Core, 32-Bit
Data Converters	A/D 8x12b SAR, D/A 2x12b
Mounting Type	Surface Mount
Number of I/O	56
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Oscillator Type	Internal
Package / Case	64-VFQFN Exposed Pad
Peripherals	WDT, I2S, DMA, PWM, POR, Brown-out Detect/Reset, LCD
Program Memory Size	64 KB
Program Memory Type	FLASH
Speed	48 MHz
Supplier Device Package	64-QFN
Supplier Device Package [x]	9
Supplier Device Package [y]	9
Voltage - Supply (Vcc/Vdd) [Max]	3.8 V
Voltage - Supply (Vcc/Vdd) [Min]	1.98 V

EFM32WG840 Series

Part	Core Size	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Peripherals	Program Memory Size	Supplier Device Package	Supplier Device Package [x]	Supplier Device Package [y]	Oscillator Type	Number of I/O	Package / Case	Data Converters	Program Memory Type	Speed	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Core Processor	Connectivity
SILICON LABS EFM32WG840F64-B-QFN64	32-Bit 32-Bit Single-Core	3.8 V	1.98 V	Brown-out Detect/Reset DMA I2S LCD POR PWM WDT	64 KB	64-QFN	9	9	Internal	56	64-VFQFN Exposed Pad	A/D 8x12b SAR D/A 2x12b	FLASH	48 MHz	Surface Mount	85 C	-40 ¯C	ARM® Cortex®-M4F	I2C IrDA SmartCard SPI UART/USART
SILICON LABS EFM32WG840F64-QFN64T	32-Bit 32-Bit Single-Core	3.8 V	1.98 V	Brown-out Detect/Reset DMA I2S LCD POR PWM WDT	64 KB	64-QFN	9	9	Internal	56	64-VFQFN Exposed Pad	A/D 8x12b D/A 2x12b	FLASH	48 MHz	Surface Mount	85 C	-40 ¯C	ARM® Cortex®-M4F	I2C IrDA SmartCard SPI UART/USART
SILICON LABS EFM32WG840F128-QFN64	32-Bit 32-Bit Single-Core	3.8 V	1.98 V	Brown-out Detect/Reset DMA I2S LCD POR PWM WDT	128 KB	64-QFN	9	9	Internal	56	64-VFQFN Exposed Pad	A/D 8x12b D/A 2x12b	FLASH	48 MHz	Surface Mount	85 C	-40 ¯C	ARM® Cortex®-M4F	I2C IrDA SmartCard SPI UART/USART

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	N/A	0	$ 5.64

General part information

ARM® Cortex®-M4F Wonder Gecko Microcontroller IC 32-Bit Single-Core 48MHz 64KB (64K x 8) FLASH 64-QFN (9x9)