| Core Processor | CIP-51 8051 | |
| Program Memory Type | FLASH | |
| Product Status | Not For New Designs | |
| Supplier Device Package | 32-QFN (4x4) | |
| EEPROM Size | - | |
| Package / Case | 32-UFQFN Exposed Pad | |
| Mfr | Silicon Labs | |
| Voltage - Supply (Vcc/Vdd) | 2.2V ~ 3.6V | |
| RoHS Status | ROHS3 Compliant | |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) | |
| Speed | 50MHz | |
| Operating Temperature | -40°C ~ 125°C (TA) | |
| RAM Size | 2.25K x 8 | |
| ECCN | 3A991A2 | |
| Number of I/O | 29 | |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | |
| Mounting Type | Surface Mount | |
| Oscillator Type | Internal | |
| Series | Busy Bee | |
| Core Size | 8-Bit | |
| Connectivity | I2C, SMBus, SPI, UART/USART | |
| Program Memory Size | 16KB (16K x 8) | |
| HTSUS | 8542.31.0001 | |
| Package | Tube | |
| Data Converters | A/D 20x10/12b SAR; D/A 2x12b | |
| Base Product Number | EFM8BB31 |
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