| PartNumber | EFM32HG321F64G-B-QFP48 | EFM32HG321F64G-A-QFP48 | EFM32HG321F64G-A-QFP48R |
| Description | ARM Microcontrollers - MCU ARM Cortex-M0+ 32-bit 25 MHz 64 kB USB MCU | IC MCU 32BIT 64KB FLASH 48TQFP | IC MCU 32BIT 64KB FLASH 48TQFP |
| Manufacturer | Silicon Laboratories | - | - |
| Product Category | ARM Microcontrollers - MCU | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | TQFP-48 | - | - |
| Series | EFM32HG | - | - |
| Core | ARM Cortex M0+ | - | - |
| Data Bus Width | 32 bit | - | - |
| Maximum Clock Frequency | 25 MHz | - | - |
| Program Memory Size | 64 kB | - | - |
| Data RAM Size | 8 kB | - | - |
| ADC Resolution | 12 bit | - | - |
| Number of I/Os | 35 I/O | - | - |
| Operating Supply Voltage | 1.98 V to 3.8 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Brand | Silicon Labs | - | - |
| Data RAM Type | SRAM | - | - |
| Interface Type | I2C, SPI, UART | - | - |
| Analog Supply Voltage | 1.98 V to 3.8 V | - | - |
| I/O Voltage | 3.3 V | - | - |
| Moisture Sensitive | Yes | - | - |
| Number of Timers/Counters | 3 x 16 bit | - | - |
| Processor Series | EFM32HG321 | - | - |
| Product Type | ARM Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 250 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 3.8 V | - | - |
| Supply Voltage Min | 1.98 V | - | - |
| Tradename | EFM32 | - | - |
| Watchdog Timers | Watchdog Timer | - | - |