EFM8BB51F16G-C-QFN20R - 50MHz 16KB 8051 MCU | Silicon Labs
MPN: EFM8BB51F16G-C-QFN20R ✓ Hoạt độngEFM8BB51F16G-C-QFN20R Tóm tắt
An 8-bit microcontroller such as the EFM8BB51F16G-C-QFN20R is a programmable semiconductor that executes firmware, reads inputs, controls outputs, and manages communication or timing functions within a larger embedded system. The EFM8 Busy Bee family belongs to the broader 8-bit MCU and embedded-processing hierarchy, making it suitable for control-centric products where cost, compactness, and deterministic peripheral integration matter more than high-end processing performance.
The device provides 4 x 16-bit timers and 3 PCA channels according to the manufacturer product information. Its 50 MHz operating frequency supports efficient execution of typical control logic, while 16 kB Flash stores firmware and 1.28 kB RAM supports working data. The 16 GPIO provide connections for sensors, switches, actuators, indicators, and other embedded-system signals within the 3 x 3 mm QFN-20 footprint.
The EFM8BB51 family uses the wide-supply 5 V Busy Bee platform and is specified for operation from -40 °C to 85 °C. The supplied manufacturer page identifies additional communication peripherals, although the exact peripheral inventory is not enumerated in the verified web data. Applications include compact sensor controllers, industrial monitoring modules, building-control interfaces, communication equipment, and low-cost consumer devices.
The principal design consideration is package and firmware compatibility. EFM8BB51F16G-C-QFN20R must be placed on a PCB footprint matching the 20-QFN 3 x 3 mm package, with careful attention to exposed-pad layout, power routing, decoupling, and signal integrity. The manufacturer EFM8BB51 datasheet should be used as the authoritative source for pin assignments, electrical limits, startup behavior, and programming details.
This product page consolidates verified distributor specifications, manufacturer documentation, package information, sourcing context, and practical design guidance. Availability and pricing should be checked against current distributor records, while lifecycle and exact alternate-device suitability should be confirmed before production release.
Bộ thay thế dễ dàng lắp đặt cho EFM8BB51F16G-C-QFN20R — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EFM8BB51F16G-C-QFN20R (cùng hình factor và footprint) — khác nhau ở Core, Package, RAM.
EFM8BB51F16G-QFN20
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EFM8BB51F16G-C-QFN20
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EFM8BB21F16G-C-QFN20R
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EFM8BB21F16G-C-QFN20
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EFM8BB51F16G-C-QFN20
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EFM8BB51F16G-C-QFN20R Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit 8051 microcontroller |
| Core | CIP-51 8051 |
| Operating Frequency | 50 MHz |
| Flash Memory | 16 kB |
| RAM | 1.28 kB |
| GPIO Count | 16 |
| Timer Count | 4 x 16-bit timers |
| PCA Channels | 3 |
| Supply Class | 5 V wide-supply platform |
| Nhiệt độ hoạt động | -40 °C to 85 °C |
| Hộp | 20-QFN, 3 x 3 mm |
| Kiểu lắp đặt | Surface mount |
| Architecture | 8-bit |
| Communication Peripherals | Additional communication peripherals |
| DigiKey Description | CIP-51 8051 Busy Bee Microcontroller IC 8-Bit 50 MHz 16 kB Flash |
| Mouser Description | 8-bit MCU, 5 V, 8051, 50 MHz, 16 kB Flash, 1.28 kB RAM, 16 GPIO |
| LCSC Listed Price | From $0.5871 as of 2026-10-21 |
Hướng dẫn cấu hình chân EFM8BB51F16G-C-QFN20R 20-qfn, 3 x 3 mm
Cấu hình chân cho EFM8BB51F16G-C-QFN20R (20-qfn, 3 x 3 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho EFM8BB51F16G-C-QFN20R.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
EFM8BB51F16G-C-QFN20R phù hợp cho 6 Áp dụngs: Compact Sensor Monitoring Controller, Industrial Control Interface, Low-Cost Consumer Device, Communication Peripheral Interface, Building and Automation Control, Small Motor or Actuator Controller.
Compact Sensor Monitoring Controller
The EFM8BB51F16G-C-QFN20R fits compact monitoring products that combine several digital sensors with local control and status reporting. Its 16 GPIO provide connections for sensor inputs, alarm outputs, indicators, and configuration controls, while the 50 MHz CIP-51 core can execute sampling logic and threshold decisions. The 16 kB Flash is appropriate for a focused firmware image, and 1.28 kB RAM supports working buffers and control state. In a sensor module, the device can operate from a regulated 5 V rail and use its timers for periodic sampling. The 3 x 3 mm QFN-20 footprint helps reduce board area, but exposed-pad layout, decoupling, and signal routing must follow the official data sheet.
Được đề xuất
Industrial Control Interface
For small industrial control interfaces, the EFM8BB51F16G-C-QFN20R provides a compact 8051-based control platform with 16 GPIO and four 16-bit timers. Those resources can support push-button inputs, relay or transistor drive signals, status LEDs, and periodic control tasks without requiring a larger processor package. The 50 MHz operating frequency provides headroom for deterministic control routines, while the 1.28 kB RAM is suited to compact state machines and communication buffers. The 3 x 3 mm QFN-20 package is useful when the interface board is constrained. Designers should verify industrial temperature suitability from the stated -40 °C to 85 °C range and use the manufacturer documentation for electrical limits and peripheral configuration.
Được đề xuất
Low-Cost Consumer Device
The EFM8BB51F16G-C-QFN20R is appropriate for compact consumer products where a small controller must coordinate buttons, LEDs, small actuators, or simple sensor inputs. Its 8-bit architecture and CIP-51 platform support cost-conscious embedded firmware, while 16 kB Flash is adequate for a focused application rather than a large connectivity stack. The 1.28 kB RAM and four timers can support debouncing, timing, and state management. The QFN-20 3 x 3 mm package reduces board footprint compared with many through-hole or larger leaded packages. Product designers should avoid assigning high-bandwidth tasks to this class of MCU and confirm regulator headroom, pin multiplexing, and package assembly requirements in the official EFM8BB51 documentation.
Được đề xuất
Communication Peripheral Interface
The EFM8BB51F16G-C-QFN20R can serve as the host controller for a small communication peripheral when the firmware and interface requirements fit an 8-bit platform. The manufacturer identifies additional communication peripherals in the EFM8BB51F16G-QFN20 family, while the verified information does not enumerate their exact type or electrical characteristics. Sixteen GPIO and four 16-bit timers provide resources for protocol handling, framing, status signals, and timing functions. The 50 MHz core supports efficient interrupt-driven routines, and the 3 x 3 mm package allows the controller to be placed close to a connector or transceiver. Final design work must confirm the specific peripheral configuration, pin multiplexing, supply limits, and timing guarantees from the manufacturer data sheet.
Được đề xuất
Building and Automation Control
In building-control and automation products, the EFM8BB51F16G-C-QFN20R can act as a local controller for sensor inputs, switches, relay drivers, and status reporting. Its 16 GPIO support a useful mix of digital connections without requiring a large leaded package, while the four 16-bit timers help implement repeatable measurement or output timing tasks. The 50 MHz 8051 core is appropriate for centralized low-bandwidth control logic rather than complex analytics. The compact 3 x 3 mm QFN-20 package helps when a controller must fit behind a panel or inside a small enclosure. Engineers should budget carefully for startup, firmware maintenance, and field reliability, and should use the exact package drawings and pin assignments from the EFM8BB51 data sheet.
Được đề xuất
Small Motor or Actuator Controller
The EFM8BB51F16G-C-QFN20R can control simple actuators where the application needs deterministic digital sequencing rather than a high-performance real-time processor. Four 16-bit timers provide timing resources for PWM-like sequencing, debouncing, or periodic actuator updates, while 16 GPIO can drive control logic, limit sensors, and status indicators. The 50 MHz core allows the firmware to combine supervisory checks with actuator sequencing. The MCU is not a substitute for a dedicated high-current motor driver; external transistor, MOSFET, or driver circuitry remains necessary. Its 3 x 3 mm QFN-20 package helps reduce controller-board size, while the -40 °C to 85 °C specification supports many non-automotive industrial environments. Confirm pin-level timing and thermal requirements before production.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EFM8BB51F16G-C-QFN20R — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | EFM8BB51F16G-QFN20 | EFM8BB51F16G-C-QFN20 | EFM8BB21F16G-C-QFN20R | EFM8BB21F16G-C-QFN20 |
|---|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
Bảo phân biệt quan trọng
- 50 MHz CIP-51 8051 processing in a 3 x 3 mm QFN-20 package (vsEFM8BB21F16G-C-QFN20R)
- 16 kB Flash and 1.28 kB RAM (vsEFM8BB21F16G-C-QFN20R)
- Four 16-bit timers and three PCA channels (vsEFM8BB51F16G-C-QFN20)
- Documented operating range (vsEFM8BB21F16G-C-QFN20)
Ghi chú thiết kế
Use the official EFM8BB51 QFN-20 land pattern and preserve the manufacturer's exposed-pad requirements. Place input and output decoupling capacitors close to their associated supply pins, and route ground returns through a low-impedance plane. Because the package is only 3 x 3 mm, inspect the PCB design for pad alignment, solder mask clearance, thermal-via placement, and assembly capability before releasing the design to fabrication.
The verified listings describe the device as a 5 V MCU, but the exact electrical operating limits are not included in the supplied data. Confirm minimum and maximum supply voltage, I/O limits, startup requirements, and decoupling values in the official EFM8BB51 data sheet. Provide a stable supply with appropriate sequencing margin and avoid designing peripheral circuitry that can exceed the MCU pin limits before those values are verified.
Keep analog or sensor-related traces short and away from switching nodes, motor-drive conductors, and high-current return paths. QFN packages have compact lead spacing, so fanout should follow the manufacturer land pattern rather than improvised traces. Validate signal timing at 50 MHz, maintain continuous ground references where appropriate, and use the datasheet's typical connection diagrams as a starting point for the complete board design.
Do not substitute a generic QFN-20 or an EFM8BB21 variant solely because the package names look similar. Firmware, pin multiplexing, memory organization, peripheral availability, and supply limits must match. The verified cross-reference data identifies EFM8BB21 variants but does not quantify their differences, so verify the official data sheets and perform a hardware and firmware equivalence review before using one as a replacement.
The verified data does not provide a thermal resistance or maximum power dissipation for this MCU. Estimate junction temperature from the actual supply voltage, I/O loading, switching activity, ambient temperature, and PCB copper exposure using manufacturer thermal guidance. Do not infer safe thermal performance from the -40 °C to 85 °C environmental rating alone; that rating describes operating temperature, not allowable self-heating.
Thông tin tuân thủ
The supplied verified data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this exact ordering code. The operating temperature range is -40 °C to 85 °C, but that does not establish automotive qualification.
