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| Part Number: | EFM8BB31F64G-B-QSOP24R | 
| Category: | Integrated Circuits (ICs) | 
| Subcategory: | Embedded - Microcontrollers | 
| Manufacturer: | Silicon Labs | 
| Packaging: | Tape & Reel (TR) | 
| Product Status: | Not For New Designs | 
| Core Processor: | CIP-51 8051 | 
| Core Size: | 8-Bit | 
| Speed: | 50MHz | 
| Connectivity: | I²C, SMBus, SPI, UART/USART | 
| Peripherals: | Brown-out Detect/Reset, POR, PWM, WDT | 
| Number of I/O: | 21 | 
| Program Memory Size: | 64KB (64K x 8) | 
| Program Memory Type: | FLASH | 
| EEPROM Size: | - | 
| RAM Size: | 4.25K x 8 | 
| Voltage - Supply (Vcc/Vdd): | 2.2V ~ 3.6V | 
| Data Converters: | A/D 13x10/12b SAR; D/A 4x12b | 
| Oscillator Type: | Internal | 
| Operating Temperature: | -40°C ~ 85°C (TA) | 
| Mounting Type: | Surface Mount | 
| Package / Case: | 24-SSOP (0.154", 3.90mm Width) | 
| Supplier Device Package: | 24-QSOP |