| PartNumber | EFM32LG332F256G-E-QFP64 | EFM32LG332F128G-E-QFP64R | EFM32LG332F128G-E-QFP64 |
| Description | ARM Microcontrollers - MCU 256k Flash, 32k RAM, USB, AES | ARM Microcontrollers - MCU 128k Flash, 32k RAM, USB, AES | ARM Microcontrollers - MCU 128k Flash, 32k RAM, USB, 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 | TQFN-64 | TQFN-64 | TQFN-64 |
| Series | EFM32LG | EFM32LG | EFM32LG |
| Core | ARM Cortex M3 | ARM Cortex M3 | ARM Cortex M3 |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz |
| Program Memory Size | 64 kB | 64 kB | 64 kB |
| Data RAM Size | 32 kB | 32 kB | 32 kB |
| ADC Resolution | 12 bit | 12 bit | 12 bit |
| Number of I/Os | 50 I/O | 50 I/O | 50 I/O |
| Operating Supply Voltage | 2 V to 3.8 V | 2 V to 3.8 V | 2 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 | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Data RAM Type | RAM | RAM | RAM |
| Data ROM Size | 256 kB | 128 kB | 128 kB |
| Data ROM Type | Flash | Flash | Flash |
| Interface Type | I2C, SPI, UART, USB | I2C, SPI, UART, USB | I2C, SPI, UART, USB |
| Moisture Sensitive | Yes | Yes | Yes |
| Number of Timers/Counters | 5 Timer | 5 Timer | 5 Timer |
| Processor Series | EFM32 | EFM32 | EFM32 |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 160 | 1000 | 160 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | EFM32 | EFM32 | EFM32 |