| Part Number | EFM8UB10F16G-B-QFN20 | EFM8UB10F16G-B-QFN28 | 
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | 
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers | 
|   |   | |
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | 
| Core Processor | CIP-51 8051 | CIP-51 8051 | 
| Core Size | 8-Bit | 8-Bit | 
| Speed | 50MHz | 50MHz | 
| Connectivity | I²C, SMBus, SPI, UART/USART, USB | I²C, SMBus, SPI, UART/USART, USB | 
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | 
| Number of I/O | 13 | 22 | 
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) | 
| Program Memory Type | Flash | Flash | 
| EEPROM Size | - | - | 
| RAM Size | 2.25K x 8 | 2.25K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.2V ~ 5.25V | 2.2V ~ 5.25V | 
| Data Converters | A/D 11x12b | A/D 20x12b | 
| Oscillator Type | Internal | Internal | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 20-UFQFN Exposed Pad | 28-WFQFN Exposed Pad | 
| Supplier Device Package | 20-QFN (3x3) | 28-QFN (5x5) |