Specification	EFM32LG840F128G-F-QFN64

Connectivity	IrDA, SmartCard, I2C, UART/USART, SPI
Core Processor	ARM® Cortex®-M3
Core Size	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	128 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

EFM32LG Series

Part	Program Memory Size	Supplier Device Package	Connectivity	Core Size	Program Memory Type	Operating Temperature [Max]	Operating Temperature [Min]	Oscillator Type	Mounting Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Data Converters	Peripherals	Number of I/O	Speed	Core Processor	Package / Case	Supplier Device Package [x]	Supplier Device Package [y]
SILICON LABS EFM32LG332F256G-F-QFP64R	256 KB	64-TQFP (10x10)	I2C IrDA SmartCard SPI UART/USART USB	32-Bit	FLASH	85 C	-40 ¯C	Internal	Surface Mount	3.8 V	1.98 V	A/D 8x12b SAR D/A 2x12b	Brown-out Detect/Reset DMA I2S POR PWM WDT	50	48 MHz	ARM® Cortex®-M3	64-TQFP
SILICON LABS EFM32LG840F128G-F-QFN64	128 KB	64-QFN	I2C IrDA SmartCard SPI UART/USART	32-Bit	FLASH	85 C	-40 ¯C	Internal	Surface Mount	3.8 V	1.98 V	A/D 8x12b SAR D/A 2x12b	Brown-out Detect/Reset DMA I2S LCD POR PWM WDT	56	48 MHz	ARM® Cortex®-M3	64-VFQFN Exposed Pad	9	9

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
Mouser	N/A	1300	$ 5.65

General part information

ARM MICROCONTROLLERS - MCU LEOPARD GECKO MCU IC 128KB

Technical documentation and resources