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| PartNumber | EFM8SB20F16G-B-QFN24 | EFM8SB20F16G-A-QFN24R | EFM8SB20F16G-A-QFN24 |
| Description | 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU | 8-bit Microcontrollers - MCU Low Power, 16kB/4352B RAM, 10b ADC | Microcontrollers - MCU 8-bit Microcontrollers - MCU 16kB/4352B RAM 10b ADC |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | Silicon Labs |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Package / Case | QFN-24 | - | - |
| Series | EFM8SB | EFM8SB | Sleepy Bee |
| Core | CIP-51 8051 | - | 8051 |
| Data Bus Width | 8 bit | - | 8 bit |
| Maximum Clock Frequency | 25 MHz | - | 25 MHz |
| Program Memory Size | 16 kB | - | 16KB (16K x 8) |
| Data RAM Size | 4.25 kB | - | 4 kB |
| ADC Resolution | 10 bit | - | 10 bit |
| Number of I/Os | 16 I/O | - | - |
| Operating Supply Voltage | 1.8 V to 3.6 V | - | 2.4 V |
| Minimum Operating Temperature | - 40 C | - | - 40 C |
| Maximum Operating Temperature | + 85 C | - | + 85 C |
| Product | MCU | - | MCU |
| Program Memory Type | Flash | - | FLASH |
| Brand | Silicon Labs | Silicon Labs | - |
| Data RAM Type | RAM | - | RAM |
| Interface Type | I2C/SMBus, SPI, UART | - | I2C SMBus SPI UART |
| Number of ADC Channels | 15 Channel | - | 15 Channel |
| Number of Timers/Counters | 4 x 16 bit | - | - |
| Processor Series | EFM8SB2 | - | EFM8SB2 |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 91 | 1500 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.6 V | - | - |
| Supply Voltage Min | 1.8 V | - | - |
| Tradename | EFM8 | EFM8 | - |
| Watchdog Timers | Watchdog Timer | - | - |
| Packaging | - | Reel | Tube Alternate Packaging |
| Unit Weight | - | - | 0.001764 oz |
| Package Case | - | - | QFN-24 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 24-QFN (4x4) |
| Number of I O | - | - | 16 |
| Speed | - | - | 25MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | - | CIP-51 8051 |
| RAM Size | - | - | 4.25K x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | - | EBI/EMI, I2C, SMBus, SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 1.8 V ~ 3.6 V |
| Core Size | - | - | 8-Bit |
| Data Converters | - | - | A/D 15x10b |
| Oscillator Type | - | - | Internal |
| Supply Voltage Max | - | - | 3.6 V |
| Supply Voltage Min | - | - | 1.8 V |
| Number of I Os | - | - | 16 I/O |
| Number of Timers Counters | - | - | 4 Timer |