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| Part Number | EFM32G840F32G-E-QFN64 | 
| Datasheet | EFM32G840F32G-E-QFN64 datasheet | 
| Description | IC MCU 32BIT 32KB FLASH 64QFN | 
| Manufacturer | Silicon Labs | 
| Series | Gecko | 
| Part Status | Active | 
| Core Processor | ARM® Cortex®-M3 | 
| Core Size | 32-Bit | 
| Speed | 32MHz | 
| Connectivity | I²C, IrDA, SmartCard, SPI, UART/USART | 
| Peripherals | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT | 
| Number of I/O | 56 | 
| Program Memory Size | 32KB (32K x 8) | 
| Program Memory Type | FLASH | 
| EEPROM Size | - | 
| RAM Size | 8K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 1.98V ~ 3.8V | 
| Data Converters | A/D 8x12b; D/A 2x12b | 
| Oscillator Type | Internal | 
| Operating Temperature | -40°C ~ 85°C (TA) | 
| Package / Case | Surface Mount | 
| Supplier Device Package | 64-VFQFN Exposed Pad | 
| Base Part Number | 64-QFN (9x9) |