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EFM8BB51F16G-C-QFN20R
EFM8BB51F16G-C-QFN20R – 8-Bit Microcontroller with Advanced Analog and Communication Peripherals
📌 Product Overview
The EFM8BB51F16G-C-QFN20R is a versatile 8-bit microcontroller from Silicon Labs’ Busy Bee family, designed for space-constrained embedded applications[citation:1][citation:10]. It combines a high-performance 8051 core with advanced analog and communication peripherals in a compact 3×3 mm QFN-20 package, making it ideal for cost-sensitive and power-efficient designs[citation:1][citation:5].
EFM8BB51F16G-C-QFN20R – 8-Bit Microcontroller with Advanced Analog and Communication Peripherals
📌 Product Overview
The EFM8BB51F16G-C-QFN20R is a versatile 8-bit microcontroller from Silicon Labs’ Busy Bee family, designed for space-constrained embedded applications[citation:1][citation:10]. It combines a high-performance 8051 core with advanced analog and communication peripherals in a compact 3×3 mm QFN-20 package, making it ideal for cost-sensitive and power-efficient designs[citation:1][citation:5].
⚙️ Key Specifications
| Parameter | Value |
|---|---|
| Core | CIP-51 8051 (8-bit) |
| Maximum Frequency | 50 MHz |
| Flash Memory | 16 KB |
| RAM | 1.25 KB |
| Operating Voltage | 1.8V to 5.5V |
| Temperature Range | -40°C to +85°C |
| Package | QFN-20 (3mm × 3mm) |
✨ Key Features
- High-Performance 8-bit Core – Pipelined 8051 core operating at up to 50 MHz for efficient processing[citation:5][citation:10]
- Flexible I/O – 16 multifunction 5V-capable I/O pins with priority crossbar for flexible pin mapping[citation:1][citation:10]
- Advanced Analog Integration – 12-bit ADC with up to 16 channels, two analog comparators, and integrated temperature sensor[citation:1][citation:5][citation:10]
- Rich Timer and PWM Resources – 4×16-bit timers, 2×8-bit timers, 3-channel PCA with PWM, and 3-channel PWM engine[citation:3][citation:10]
- Multiple Communication Interfaces – 2×UART, SMBus/I²C, and SPI with 4-byte FIFO[citation:5][citation:10]
- Configurable Logic Units (CLUs) – 4 programmable logic blocks for glue logic replacement and waveform generation[citation:2][citation:10]
- 16-bit CRC Engine – Hardware CRC calculation for flash verification and communications protocols[citation:2]
- Low Power Operation – Built-in power-save modes and wake-up from low-power states[citation:2]
- Compact Footprint – 3×3 mm QFN-20 package, ideal for space-constrained designs[citation:1][citation:4]
📦 Packaging & Ordering Information
| Part Number | EFM8BB51F16G-C-QFN20R |
| Package Type | QFN-20 (3mm × 3mm) |
| Package Quantity | 2,500 (Tape & Reel)[citation:5] |
| Product Status | Active – In Production |
| MSL Rating | Level-1 (Unlimited) |
🔧 Key Applications
- LED and Lighting Control – PWM dimming, color control, smart lighting[citation:1]
- Industrial Automation – Sensor interfaces, motor control, factory automation[citation:1][citation:7]
- Consumer Electronics – Small appliances, portable devices, human-machine interfaces[citation:1]
- Motor Control – Brushless DC (BLDC) motor control, power tools[citation:1]
- Embedded Systems – Space-constrained applications requiring analog integration[citation:1]
⚡ Architecture Overview
The EFM8BB51F16G-C-QFN20R is built around Silicon Labs’ high-performance CIP-51 8051 core, delivering up to 50 MHz operation with efficient instruction execution[citation:5][citation:10]. The device features a flexible priority crossbar that enables designers to map digital peripherals to I/O pins for optimized board layout[citation:10].
The analog subsystem includes a 12-bit SAR ADC with up to 16 channels, supporting fast conversions at up to 612.5 ksps, two analog comparators, and an integrated temperature sensor for environmental monitoring[citation:1][citation:5][citation:6]. The Configurable Logic Units (CLUs) provide hardware-level flexibility, allowing designers to implement custom logic functions without external components[citation:2].
Differentiator: With its 5V I/O capability, extensive analog integration, and compact footprint, the EFM8BB51F16G-C-QFN20R offers an ideal balance of performance and cost for applications migrating from legacy 8-bit designs or requiring robust analog functionality in limited board space[citation:1][citation:10].
📋 Compliance & Environmental
| RoHS Status | RoHS Compliant[citation:5] |
| REACH Status | REACH Unaffected[citation:5] |
| US ECCN | 3A991A2[citation:11] |
For complete technical documentation including the full datasheet and application notes, please visit the Silicon Labs product page or contact your authorized distributor. The BB51-EK2700A Explorer Kit and BB52-PK5207B Pro Kit are available for development and evaluation[citation:4].