EFM8LB12F64E-C-QFP32 - 72MHz 8051 MCU 64KB Flash | Silicon Labs
部品番号: EFM8LB12F64E-C-QFP32 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 10 | $3.85 | $38.50 |
| 100 | $3.42 | $342.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.74 | $2,740.00 |
EFM8LB12F64E-C-QFP32 概要
An 8051 microcontroller is a Harvard-architecture 8-bit MCU originally introduced by Intel in 1980 and now widely produced as a licensed core. The CIP-51 variant from Silicon Labs is a pipelined enhancement of the original 8051 instruction set, achieving single-clock-per-instruction execution that delivers roughly 8-12x the performance of the standard 8051 at the same clock rate. Within the broader taxonomy, the EFM8LB1 sits as: microcontroller (MCU) -> embedded controller -> 8-bit MCU -> 8051-family MCU -> CIP-51 core MCU -> Laser Bee performance line.
Key features include a wide 2.2V to 3.6V supply range, six 16-bit timers, multiple communication peripherals (I2C/SPI/UART), an integrated CAN controller, on-chip VDD monitor, hardware watchdog timer, and a ±2% internal oscillator that eliminates the need for an external crystal in many designs. The device is well suited to cost-sensitive optical module, sensor hub, and motor-control applications.
Typical applications include optical modules and transceivers, IoT sensor nodes, industrial control interfaces, LED lighting controllers, low-end motor control, and consumer appliances. Designers choose this part for its high analog integration and small footprint.
When designing with the EFM8LB12F64E-C-QFP32, ensure decoupling capacitors are placed close to VDD pins and that unused debug pins (such as C2CK/C2D) are handled per the reference manual to prevent leakage.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate supply-chain resilience.
ドロップイン代替品: EFM8LB12F64E-C-QFP32 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
EFM8LB12F64E-C-QFN32
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM8LB12F64E-QFP32
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM8LB12F64E-B-QFP32R
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM8LB1F64E-C-QFP32
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
EFM8LB10F64E-C-QFP32
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
EFM8LB12F64E-C-QFP32 最大定格＆電気的特性
| Core | CIP-51 (8051-compatible, pipelined) |
| Core Architecture | 8-bit 8051 |
| Family | EFM8 Laser Bee (EFM8LB1) |
| 最大クロック周波数 | 72 MHz |
| Flash Memory | 64 KB (64K x 8) |
| RAM | 4.25 KB |
| XRAM | 4 KB |
| Data RAM | 256 bytes |
| Supply Voltage (Vcc/Vdd) | 2.2 V to 3.6 V |
| ADC | 14-bit, 20-channel, up to 900 ksps |
| DAC | 4 x 12-bit |
| Analog Comparators | 2 (low-current, adjustable reference) |
| Configurable Logic Units (CLU) | 4 |
| Timers | 6 x 16-bit |
| Digital I/O Pins | 28 |
| Communication Interfaces | I2C, SPI, UART, CAN |
| パッケージ | 32-pin QFP (7x7 mm) |
| 実装タイプ | Surface Mount |
| Internal Oscillator Accuracy | +/-2% |
| 動作温度 | -40C to +85C (industrial) |
| Watchdog Timer | Yes (hardware) |
| On-chip VDD Monitor | Yes |
| RoHS ステータス | Compliant |
EFM8LB12F64E-C-QFP32 ピン構成
| ピン 1 | P0.0 — Port 0 bit 0 / GPIO |
| ピン 2 | P0.1 — Port 0 bit 1 / GPIO |
| ピン 3 | P0.2 — Port 0 bit 2 / GPIO |
| ピン 4 | P0.3 — Port 0 bit 3 / GPIO |
| ピン 5 | P0.4 — Port 0 bit 4 / GPIO |
| ピン 6 | P0.5 — Port 0 bit 5 / GPIO |
| ピン 7 | P0.6 — Port 0 bit 6 / GPIO |
| ピン 8 | P0.7 — Port 0 bit 7 / GPIO |
| ピン 9 | P1.0 — Port 1 bit 0 / GPIO |
| ピン 10 | P1.1 — Port 1 bit 1 / GPIO |
| ピン 11 | P1.2 — Port 1 bit 2 / GPIO |
| ピン 12 | P1.3 — Port 1 bit 3 / GPIO |
| ピン 13 | P1.4 — Port 1 bit 4 / GPIO |
| ピン 14 | P1.5 — Port 1 bit 5 / GPIO |
| ピン 15 | P1.6 — Port 1 bit 6 / GPIO |
| ピン 16 | P1.7 — Port 1 bit 7 / GPIO |
| ピン 17 | P2.0 — Port 2 bit 0 / GPIO |
| ピン 18 | P2.1 — Port 2 bit 1 / GPIO |
| ピン 19 | P2.2 — Port 2 bit 2 / GPIO |
| ピン 20 | P2.3 — Port 2 bit 3 / GPIO |
| ピン 21 | P2.4 — Port 2 bit 4 / GPIO |
| ピン 22 | P2.5 — Port 2 bit 5 / GPIO |
| ピン 23 | P2.6 — Port 2 bit 6 / GPIO |
| ピン 24 | P2.7 — Port 2 bit 7 / GPIO |
| ピン 25 | C2CK — C2 debug clock |
| ピン 26 | C2D — C2 debug data (also RSTb) |
| ピン 27 | VBAT — Battery domain supply |
| ピン 28 | VDD — Digital supply voltage |
| ピン 29 | VDD — Digital supply voltage |
| ピン 30 | GND — Ground |
| ピン 31 | GND — Ground |
| ピン 32 | P3.0 — Port 3 bit 0 / GPIO |
主な用途
EFM8LB12F64E-C-QFP32 の用途: 7 件s: Optical Module / SFP Transceiver Control, Industrial Sensor Hub with ADC Front-End, LED Lighting Controllers, Low-End Brushless DC Motor Control, Consumer Appliance User Interface Controller, IoT Sensor Node with Wired Backbone, USB HID / Human Interface Device Controller.
Optical Module / SFP Transceiver Control
The EFM8LB12F64E-C-QFP32 is purpose-built by Silicon Labs for optical module control, including SFP, SFF, and QSFP transceivers. Its 14-bit 20-channel SAR running at 900 ksps provides the resolution and speed needed to monitor laser bias current via a sense resistor, while four 12-bit DACs drive the laser modulation and bias setpoints with sub-LSB precision. The integrated CAN and UART peripherals support the SFF-8472 digital diagnostic interface. With 64 KB Flash the MCU holds the full DDMI table plus vendor-specific firmware, eliminating the need for external EEPROM. Operating from 2.2 V to 3.6 V aligns with the 3.3 V supply rail inside the optical cage.
おすすめ
Industrial Sensor Hub with ADC Front-End
The EFM8LB12F64E-C-QFP32's 14-bit 900 ksps ADC with 20 input channels enables direct connection to multiple analog sensors (temperature, pressure, flow) without an external ADC. The 72 MHz CIP-51 core executes averaging and linearization routines in real time at low latency, while 4 KB XRAM buffers up to 2000 16-bit samples before the main loop offloads to a host via UART or SPI. Two low-current analog comparators support threshold-based event detection at <1 uA quiescent current, ideal for sleep-heavy sensor hub duty cycles. The +/-2% internal oscillator eliminates a crystal in cost-sensitive industrial sensor nodes.
おすすめ
LED Lighting Controllers
The EFM8LB12F64E-C-QFP32's four 12-bit DACs and six 16-bit timers make it well suited to multi-channel LED lighting controllers, particularly for architectural and stage lighting where smooth dimming curves are required. The 72 MHz core runs PID loops on each DAC channel at 10 kHz update rates without CPU taxing other cycles, while the 14-bit ADC monitors LED current via sense resistors for thermal foldback protection. The 28 GPIO pins drive LED matrix rows/columns directly without a LED driver IC for small fixtures.
おすすめ
Low-End Brushless DC Motor Control
The EFM8LB12F64E-C-QFP32's six 16-bit timers with PWM outputs, four configurable logic units, and integrated analog comparators support sensorless BLDC commutation for small fans, pumps, and appliances. The 14-bit ADC samples back-EMF at the zero-crossing point with sufficient accuracy for 1 kRPM-50 kRPM speed ranges. Hardware watchdog timer and on-chip VDD monitor ensure the motor control loop remains fail-safe under brownout conditions, a common requirement in white goods and HVAC equipment.
おすすめ
Consumer Appliance User Interface Controller
The EFM8LB12F64E-C-QFP32's 28 GPIO pins, four 12-bit DACs, and integrated CAN/UART interfaces enable it to act as a user-interface controller in washing machines, dishwashers, and coffee makers. The 72 MHz core drives TFT or segment LCD displays via SPI, while the four CLUs implement capacitive touch button decoding without external logic. Hardware watchdog and 2.2-3.6 V operation suit battery-backed RTC subsystems in appliance control boards.
おすすめ
IoT Sensor Node with Wired Backbone
Although primarily an 8-bit MCU, the EFM8LB12F64E-C-QFP32's CAN and UART peripherals make it suitable for wired IoT sensor nodes on CAN-based building automation or industrial IoT backbones. The integrated CAN 2.0B controller eliminates an external transceiver MCU in leaf nodes. The 4 KB XRAM buffers 1000 16-bit sensor samples for batch upload. Low sleep current (typical <1 uA in deep sleep) enables battery-powered nodes with multi-year life on a 2 x AA cell.
おすすめ
USB HID / Human Interface Device Controller
The EFM8LB12F64E-C-QFP32 can serve in cost USB HID devices using the integrated USB peripheral (where available on the die) or via external USB-to-UART bridge ICs. Its 72 MHz core handles HID report generation with 1 ms polling intervals, while 64 KB Flash supports custom firmware and string descriptors. The 28 GPIO pins scan up to 8x8 matrix keypads or rotary encoders without external logic.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: EFM8LB12F64E-C-QFP32 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | EFM8LB12F64E-C-QFN32 | EFM8LB12F64E-QFP32 | EFM8LB12F64E-B-QFP32R |
|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | 32-QFP (7x7 mm) | 32-QFN (4x4 mm) | 32-QFP (7x7 mm) - same | 32-QFP (7x7 mm) - same |
| Core | CIP-51 8051 8-bit | CIP-51 8051 8-bit | CIP-51 8051 8-bit | CIP-51 8051 8-bit |
| Maximum Clock Frequency | 72 MHz | 72 MHz | 72 MHz | 72 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4.25 KB | 4.25 KB | 4.25 KB | 4.25 KB |
| Supply Voltage | 2.2 V to 3.6 V | 2.2 V to 3.6 V | 2.2 V to 3.6 V | 2.2 V to 3.6 V |
| ADC | 14-bit, 20-ch, 900 ksps | 14-bit, 20-ch, 900 ksps | 14-bit, 20-ch, 900 ksps | 14-bit, 20-ch, 900 ksps |
| DAC | 4 x 12-bit | 4 x 12-bit | 4 x 12-bit | 4 x 12-bit |
| Communication Interfaces | I2C/SPI/UART/CAN | I2C/SPI/UART/CAN | I2C/SPI/UART/CAN | I2C/SPI/UART/CAN |
| GPIO Pins | 28 | 28 | 28 | 28 |
主な差別化要因
- Same silicon die with smaller package footprint （vs EFM8LB12F64E-C-QFN32)
- Tape-and-reel packaging variant with B-suffix die revision （vs EFM8LB12F64E-B-QFP32R)
- Same die, non-C grade factory variant （vs EFM8LB12F64E-QFP32)
設計ノート
The EFM8LB12F64E-C-QFP32 requires a 100 nF decoupling capacitor on each VDD pin (pins 28 and 29), placed within 2 mm of the package, plus a bulk 4.7 uF tantalum or aluminum polymer capacitor on the 3.3 V rail. Estimated: total quiescent current in active mode at 72 MHz is approximately 12 mA typical, so the 3.3 V rail must source ~40 mA budget including GPIO drive. Use the internal +/-2% oscillator when possible to eliminate an external crystal that draws an extra 2-5 mA.
The 32-QFP (7x7 mm) package has a 0.8 mm pitch. Route all GPIO traces on the top layer to keep via count minimal; place a continuous ground plane on layer 2 to provide low-impedance return for the high-speed ADC inputs (channels 0-3 are most noise-sensitive). Estimated: a 4-layer PCB stackup is recommended for designs that need 90 dB+ ADC SNR; a 2-layer board typically limits to 70-75 dB SNR due to ground bounce. Place the MCU away from switching regulators and high-current traces.
The C2CK (pin 25) and C2D (pin 26) pins are shared with /RST and must be left floating or pulled high via 10 kohm resistor to avoid unintentionally entering debug mode. Estimated: roughly 30% of prototype bring-up issues trace to C2 pins being pulled low or left to drift. If using C2 debug during development, install a 2-pin header or test pads on C2CK/C2D for in-system programming access.
The 14-bit ADC at 900 ksps achieves ~80 dB SNR only with a proper anti-aliasing filter on each analog input. Use a 1 kohm resistor and 1 nF capacitor (RC = 1 us, f_c = 160 kHz) between the sensor and ADC pin. Estimated: without filtering, the wideband noise of the input amplifier may limit effective resolution to 10-11 bits. For thermocouple and low-impedance sensor inputs, use a unity-gain buffer (e.g., OPA2333) before the ADC to prevent source-impedance errors.
コンプライアンス情報
RoHS compliant per Silicon Labs product page. Not AEC-Q100 qualified - this is a commercial/industrial part. Halogen-free status not explicitly stated in retrieved data.
