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| PartNumber | EFM32G840F32G-E-QFN64 | EFM32G840F32-QFN64 | EFM32G840F32-QFN64T |
| Description | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | Silicon Laboratories |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-64 | QFN-64 | QFN-64 |
| Core | ARM Cortex M3 | ARM Cortex M3 | ARM Cortex M3 |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz |
| Program Memory Size | 32 kB | 32 kB | 32 kB |
| Data RAM Size | 8 kB | 8 kB | 8 kB |
| ADC Resolution | 12 bit | - | 12 bit |
| Operating Supply Voltage | 1.98 V to 3.8 V | 3 V | 1.98 V to 3.8 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tray | Reel | Tray |
| Product | MCU | - | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Data RAM Type | RAM | RAM | SRAM |
| Interface Type | I2C, SPI, UART, USB | I2C, UART | I2C, SPI, UART |
| DAC Resolution | 1 x 12 bit | - | 12 bit |
| Moisture Sensitive | Yes | Yes | Yes |
| Number of Timers/Counters | 3 x 16 bit | 3 Timer | 3 x 16 bit |
| Processor Series | EFM32G | EFM32G840 | EFM32G840 |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 260 | 1000 | 260 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.8 V | 3.8 V | 3.8 V |
| Supply Voltage Min | 1.98 V | 1.98 V | 1.98 V |
| Watchdog Timers | Watchdog Timer | - | Watchdog Timer |
| Series | - | EFM32G | EFM32G |
| Number of I/Os | - | 56 I/O | 56 I/O |
| I/O Voltage | - | 3 V | 3.3 V |
| Tradename | - | EFM32 | EFM32 |
| Part # Aliases | - | EFM32G840F32 | - |
| Unit Weight | - | 0.007277 oz | - |
| Analog Supply Voltage | - | - | 1.98 V to 3.8 V |