EFM8BB21F16G-C-QFN20R - 50MHz 16KB 8-Bit MCU | Silicon Labs
N.º da peça: EFM8BB21F16G-C-QFN20R ✗ Fim de vida| Qtd. | Preço unitário | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
| 3.000 | $0 | $0,00 |
EFM8BB21F16G-C-QFN20R Visão geral
An 8-bit microcontroller is a programmable semiconductor containing a CPU core, memory, digital I/O, timers, and peripherals on one integrated circuit. The EFM8 Busy Bee family combines an 8051-compatible architecture with enhanced peripherals, allowing compact embedded controllers to execute control logic, sample analog signals, and manage communications without requiring separate components. This MCU therefore sits between a basic microcontroller and a more complex mixed-signal embedded controller.
The verified data highlights a 50 MHz operating speed, 16 KB Flash, 2.25 KB RAM, 16 digital I/O lines, and a 3x3 mm QFN-20 package. Related Silicon Labs family information lists a 12-bit ADC, analog comparators, programmable counter array channels, and additional communication peripherals. These integrated resources reduce board area and simplify designs requiring sensor acquisition, timing, or low-speed communication.
The C-QFN20R ordering suffix identifies a packaged 20-QFN tape-and-reel configuration; the provided data does not independently establish every electrical limit for this exact suffix. The family datasheet should be used for package dimensions, pin functions, electrical characteristics, clocking, memory behavior, and programming details. Because the MCU integrates both digital and analog functions, careful grounding and short analog traces remain important.
Typical uses include compact sensor controllers, consumer-electronics accessories, motor-control or timing subsystems, medical-device control boards, and industrial automation modules. The 20-QFN package reduces footprint compared with larger leaded packages, but exposed-pad thermal management and assembly process controls must be considered. The 50 MHz core provides useful headroom when coordinating peripheral activity and control tasks.
For PCB design, use the manufacturer datasheet and reference-manual pin definitions rather than assuming package-side numbering. Place decoupling capacitors close to supply pins, provide a clean analog reference and ground arrangement, and verify exposed-pad copper against the package drawing. Confirm programming, clock, reset, and boot requirements before committing the layout.
This page combines verified distributor and manufacturer information with application guidance, datasheet links, and a cautious replacement analysis. Because exact electrical and lifecycle fields were not supplied in the source data, they are marked as needed instead of being inferred. That approach keeps purchasing and design decisions traceable to verifiable EFM8BB2 documentation.
Alternativas drop-in para EFM8BB21F16G-C-QFN20R — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EFM8BB21F16G-C-QFN20R (mesmo formato e footprint) — diferindo em Core, Package, RAM.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EFM8BB21F16G-C-QFN20
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM8BB21F16A-C-QFN20R
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM8BB21F16G-B-QFN20R
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM8BB21F16G-QFN20
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM8BB21F16G-C-QSOP24
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM8BB21F16G-C-QFN20R Classificações máximas e características elétricas
| Core | CIP-51 8051-compatible 8-bit core |
| Frequência máxima de clock | 50 MHz |
| Flash Memory | 16 KB |
| RAM | 2.25 KB |
| Digital I/O | 16 lines |
| Tensão de alimentação | 2.5 V/3.3 V |
| Encapsulamento | 20-QFN, 3x3 mm |
| Temperature Range | -40°C to +85°C |
| ADC | 1 unit, 12-bit, 15 channels |
| Analog Comparators | 2 low-current comparators |
| Programmable Counter Array | 3 channels |
| Timers | 5 x 16-bit timers |
| Series | EFM8 Busy Bee |
| Tipo de montagem | Surface Mount |
| Compliance | EU RoHS Compliant; REACH Compliant |
Guia de Configuração de Pinos do EFM8BB21F16G-C-QFN20R 20-qfn, 3x3 mm
Configuração de pinos para EFM8BB21F16G-C-QFN20R (pacote 20-qfn, 3x3 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para EFM8BB21F16G-C-QFN20R.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
EFM8BB21F16G-C-QFN20R é adequado para 6 aplicaçãos: Industrial Sensor Controller, Consumer Electronics Accessory, Motor Control and Timing, Medical Device Control Module, IoT Edge Sensor Node, Compact Analog Monitoring Board.
Industrial Sensor Controller
EFM8BB21F16G-C-QFN20R fits compact industrial sensor modules because related EFM8BB2 family information identifies a 12-bit ADC, 15 channels, two analog comparators, and 16 digital I/O lines. The 50 MHz CIP-51 core can supervise acquisition, threshold decisions, and control logic while the 16 KB Flash stores firmware. In a 3.3 V system, place the MCU close to the sensor interface and preserve a quiet analog return path. Verify the exact ADC input range, acquisition time, and operating limits from the EFM8BB2 datasheet before finalizing the front end.
Recomendado
Consumer Electronics Accessory
The 20-QFN 3x3 mm package helps reduce board footprint in consumer accessories that combine button input, status indication, and local control. Sixteen digital I/O lines provide useful peripheral connectivity, while the 50 MHz core leaves processing headroom for protocol handling and debouncing. The related family information also lists additional communication peripherals, making the device suitable for compact accessory logic where an external discrete controller would be wasteful. Confirm the exact communication peripheral availability and package pin assignment in the manufacturer documentation.
Recomendado
Motor Control and Timing
EFM8BB21F16G-C-QFN20R is suitable for small motor-control or timing subsystems because the EFM8BB2 family includes five 16-bit timers and programmable counter-array resources. Those blocks can support periodic generation, input capture, or timing coordination, while the 50 MHz core handles supervisory logic. The MCU does not replace a power MOSFET driver or motor driver; those functions must be added according to the load and voltage. Validate timer clocking, pin multiplexing, and output limits against the exact datasheet.
Recomendado
Medical Device Control Module
The MCU can serve as a control and monitoring element in a compact medical-device module because its 8-bit core, 16 KB Flash, and 2.25 KB RAM are suitable for low-bandwidth supervisory functions. The family’s 12-bit ADC and comparators may support sensor conditioning or threshold monitoring when their electrical limits meet the signal requirements. Medical systems still require independent validation of accuracy, isolation, reliability, and regulatory suitability. Do not infer medical certification from the EFM8 family name or from general RoHS or REACH statements.
Recomendado
IoT Edge Sensor Node
EFM8BB21F16G-C-QFN20R fits an IoT edge sensor node that needs local acquisition, thresholding, and low-power supervisory control before data leaves the node. Its 16 digital I/O lines, 16 KB Flash, and related-family 12-bit ADC provide a compact resource set, while the 50 MHz processor can coordinate multiple peripheral events. The supplied data does not specify a wireless radio, so communications require an external or integrated companion solution. Check current consumption and wake-up behavior in the datasheet before sizing the battery and power regulator.
Recomendado
Compact Analog Monitoring Board
The integrated analog resources of the EFM8BB2 family make EFM8BB21F16G-C-QFN20R relevant to compact analog-monitoring boards. A 12-bit ADC with 15 channels can acquire multiple sensor inputs, and two comparators can support threshold or window decisions, while the CPU handles filtering and reporting. Place analog inputs away from switching nodes, route them as short as practical, and provide a stable ground reference. The exact sample-and-hold behavior, input impedance, and channel multiplexing timing must be verified in the EFM8BB2 datasheet.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EFM8BB21F16G-C-QFN20R — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EFM8BB21F16G-C-QFN20 | EFM8BB21F16A-C-QFN20R | EFM8BB21F16G-B-QFN20R | EFM8BB21F16G-QFN20 |
|---|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | 20-QFN (3x3 mm) | 20-QFN (3x3 mm) | 20-QFN (3x3 mm) | 20-QFN (3x3 mm) | 20-QFN (3x3 mm) |
Principais diferenciais
- Exact controlled orderable suffix (vs EFM8BB21F16G-C-QFN20)
- Automotive-grade family option (vs EFM8BB21F16A-C-QFN20R)
- Compact integrated resource set (vs EFM8BB21F16G-QFN20)
Notas de projeto
Use the EFM8BB2 datasheet package drawing as the authority for the QFN-20 pin numbering and exposed-pad connection. Keep the analog inputs and reference connections short, place supply decoupling at the appropriate pins, and route high-current or switching-node copper away from the MCU analog section. A compact package saves board area but leaves less tolerance for long return paths and poorly arranged ground connections.
Confirm the exact supply-voltage range, regulator sequencing, reset requirements, and operating current for EFM8BB21F16G-C-QFN20R in the EFM8BB2 datasheet before publishing a power budget. The verified distributor data supports 2.5 V/3.3 V operation, but it does not provide active or sleep-current figures. Use measured current and manufacturer limits rather than assuming that a 50 MHz clock implies a particular current draw.
Do not treat a family member or functional-equivalent listing as proof of a drop-in replacement. Verify package dimensions, pin names, exposed-pad requirements, temperature grade, qualification, memory, and the meaning of the C, A, B, and R ordering suffixes. In particular, the supplied QSOP24 search result is not evidence that the device can replace the target on a QFN20 PCB without a layout change.
Informações de conformidade
EU RoHS and REACH compliance are reported for EFM8BB21F16G-C-QFN20 by the supplied Abacus Technologies result; exact R-suffix records should be confirmed. No verified AEC-Q100 status is supplied for the target. The related A variant is reported as AEC-Q100 qualified, but that does not establish qualification for this target.
