| Core Processor | CIP-51 8051 | |
| Program Memory Type | FLASH | |
| Product Status | Active | |
| Supplier Device Package | 32-QFN (5x5) | |
| EEPROM Size | - | |
| Package / Case | 32-VFQFN Exposed Pad | |
| Mfr | Silicon Labs | |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 3.6V | |
| RoHS Status | ROHS3 Compliant | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Speed | 25MHz | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| RAM Size | 4.25K x 8 | |
| ECCN | 3A991A2 | |
| Number of I/O | 24 | |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | |
| Mounting Type | Surface Mount | |
| Oscillator Type | Internal | |
| Series | Sleepy Bee | |
| Core Size | 8-Bit | |
| Connectivity | EBI/EMI, I2C, SMBus, SPI, UART/USART | |
| Program Memory Size | 64KB (64K x 8) | |
| HTSUS | 8542.31.0001 | |
| Package | Tape & Reel (TR) | |
| Data Converters | A/D 23x10b | |
| Base Product Number | EFM8SB20 |
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