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| PartNumber | EFM8BB22F16A-C-QFN28 | EFM8BB22F16A-C-QFN28R | EFM8BB22F16G-B-QFN28 |
| Description | 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU | 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU | Microcontrollers - MCU 8-bit Microcontrollers - MCU 16kB/2304B RAM 12b ADC |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | Silicon Labs |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFN-28 | QFN-28 | - |
| Series | EFM8BB2 | EFM8BB2 | Busy Bee |
| Core | CIP-51 8051 | CIP-51 8051 | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 50 MHz | 50 MHz | - |
| Program Memory Size | 16 kB | 16 kB | 16KB (16K x 8) |
| Data RAM Size | 2.25 kB | 2.25 kB | - |
| ADC Resolution | 12 bit | 12 bit | - |
| Number of I/Os | 22 I/O | 22 I/O | - |
| Operating Supply Voltage | 2.2 V to 3.6 V | 2.2 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Packaging | Tube | Box | Tape & Reel (TR) Alternate Packaging |
| Product | MCU | MCU | - |
| Program Memory Type | Flash | Flash | FLASH |
| Brand | Silicon Labs / Bluegiga | Silicon Labs / Bluegiga | - |
| Data RAM Type | SRAM | SRAM | - |
| Interface Type | I2C, SMBus, SPI, UART | I2C, SMBus, SPI, UART | - |
| DAC Resolution | 6 bit | 6 bit | - |
| I/O Voltage | 5.8 V | 5.8 V | - |
| Number of ADC Channels | 20 Channel | 20 Channel | - |
| Number of Timers/Counters | 5 x 16 bit | 5 x 16 bit | - |
| Processor Series | EFM8BB2 | EFM8BB2 | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Supply Voltage Min | 2.2 V | 2.2 V | - |
| Tradename | Busy Bee | Busy Bee | - |
| Watchdog Timers | Watchdog Timer | Watchdog Timer | - |
| Package Case | - | - | 28-WFQFN Exposed Pad |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 28-QFN (5x5) |
| Number of I O | - | - | 22 |
| Speed | - | - | 50MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | - | CIP-51 8051 |
| RAM Size | - | - | 2.25K x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | - | I2C, SMBus, SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 2.2 V ~ 3.6 V |
| Core Size | - | - | 8-Bit |
| Data Converters | - | - | A/D 20x12b |
| Oscillator Type | - | - | Internal |