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| PartNumber | EFM32G840F128G-E-QFN64 | EFM32G840F128-QFN64 | EFM32G840F128-QFN64T |
| Description | ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x24 LCD, AES | ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x24 LCD, AES | Microcontrollers - MCU ARM Microcontrollers - MCU 128k Flash 16k RAM 4x24 LCD AES |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | Silicon Labs |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFN-64 | QFN-64 | - |
| Core | ARM Cortex M3 | ARM Cortex M3 | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 32 MHz | 32 MHz | - |
| Program Memory Size | 128 kB | 128 kB | 128KB (128K x 8) |
| Data RAM Size | 16 kB | 16 kB | - |
| ADC Resolution | 12 bit | - | - |
| Operating Supply Voltage | 1.98 V to 3.8 V | 3 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Reel | Tray Alternate Packaging |
| Product | MCU | - | - |
| Program Memory Type | Flash | Flash | FLASH |
| Brand | Silicon Labs | Silicon Labs | - |
| Data RAM Type | RAM | RAM | - |
| Interface Type | I2C, SPI, UART, USB | I2C, UART | - |
| DAC Resolution | 1 x 12 bit | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 3 x 16 bit | 3 Timer | - |
| Processor Series | EFM32G | EFM32G840 | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Factory Pack Quantity | 260 | 1000 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.8 V | 3.8 V | - |
| Supply Voltage Min | 1.98 V | 1.98 V | - |
| Watchdog Timers | Watchdog Timer | - | - |
| Series | - | EFM32G | Gecko |
| Number of I/Os | - | 56 I/O | - |
| I/O Voltage | - | 3 V | - |
| Tradename | - | EFM32 | EFM32 |
| Part # Aliases | - | EFM32G840F128 | - |
| Unit Weight | - | 0.007277 oz | - |
| Package Case | - | - | 64-VFQFN Exposed Pad |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 64-QFN (9x9) |
| Number of I O | - | - | 56 |
| Speed | - | - | 32MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | - | ARMR CortexR-M3 |
| RAM Size | - | - | 16K x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT |
| Connectivity | - | - | EBI/EMI, I2C, IrDA, SmartCard, SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 1.85 V ~ 3.8 V |
| Core Size | - | - | 32-Bit |
| Data Converters | - | - | A/D 8x12b, D/A 2x12b |
| Oscillator Type | - | - | Internal |
| Manufacturer | Part # | Description | RFQ |
|---|---|---|---|
Silicon Labs |
EFM32G840F64G-E-QFN64 | ARM Microcontrollers - MCU 64k Flash, 16k RAM, 4x24 LCD, AES | |
| EFM32G840F32G-E-QFN64 | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES | ||
| EFM32G840F128G-E-QFN64 | ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x24 LCD, AES | ||
| EFM32G840F64-QFN64 | ARM Microcontrollers - MCU 64k Flash, 16k RAM, 4x24 LCD, AES | ||
| EFM32G840F32-QFN64 | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES | ||
| EFM32G840F64G-E-QFN64R | ARM Microcontrollers - MCU 64k Flash, 16k RAM, 4x24 LCD, AES | ||
| EFM32G840F128G-E-QFN64R | ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x24 LCD, AES | ||
| EFM32G840F128-QFN64 | ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x24 LCD, AES | ||
| EFM32G840F32G-E-QFN64R | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES | ||
| EFM32G840F64-QFN64T | ARM Microcontrollers - MCU 64k Flash, 16k RAM, 4x24 LCD, AES | ||
| EFM32G840F32-QFN64T | ARM Microcontrollers - MCU 32k Flash, 8k RAM, 4x24 LCD, AES | ||
| EFM32G840F128G-E-QFN64 | IC MCU 32BIT 128KB FLASH 64QFN | ||
| EFM32G840F128G-E-QFN64R | MCU 32-bit ARM Cortex M3 RISC 128KB Flash 2.5V/3.3V 64-Pin QFN EP T/R | ||
| EFM32G840F32G-E-QFN64 | IC MCU 32BIT 32KB FLASH 64QFN | ||
| EFM32G840F32G-E-QFN64R | IC MCU 32BIT 32KB FLASH 64QFN | ||
| EFM32G840F64G-E-QFN64 | IC MCU 32BIT 64KB FLASH 64QFN | ||
| EFM32G840F64G-E-QFN64R | IC MCU 32BIT 64KB FLASH 64QFN | ||
| EFM32G840F128-QFN64 | Microcontrollers - MCU ARM Microcontrollers - MCU 128KB FLASH 16KB RAM 32MHZ 1.8-3.8V | ||
| EFM32G840F64-QFN64 | Microcontrollers - MCU ARM Microcontrollers - MCU 64KB FLASH 16KB RAM 32MHZ 1.8-3.8V | ||
| EFM32G840F32-QFN64 | Microcontrollers - MCU ARM Microcontrollers - MCU 32KB FLASH 8KB RAM 32MHZ 1.8-3.8V | ||
| EFM32G840F128-QFN64T | Microcontrollers - MCU ARM Microcontrollers - MCU 128k Flash 16k RAM 4x24 LCD AES | ||
| EFM32G840F64-QFN64T | Microcontrollers - MCU ARM Microcontrollers - MCU 64k Flash 16k RAM 4x24 LCD AES | ||
| EFM32G840F32-QFN64T | Microcontrollers - MCU ARM Microcontrollers - MCU 32k Flash 8k RAM 4x24 LCD AES | ||
| EFM32G840F128 | New and Original |