C8051F350-GQ - 50MHz 8-Bit Mixed-Signal MCU | Silicon Labs
部品番号: C8051F350-GQ ✓ 生産中C8051F350-GQ 概要
A mixed-signal microcontroller is a semiconductor that combines a digital processing core with analog-to-digital conversion and other analog or mixed-signal peripherals. In the broader hierarchy, the C8051F350-GQ is an 8-bit MCU, part of the C8051 family, and uses a pipelined 8051-compatible instruction set. This integration allows one device to perform control processing and acquire or generate analog signals without requiring separate external components for every measurement function.
The C8051F350-GQ operates at up to 50 MHz and provides 8 KB of flash memory organized as 8K x 8. Its 768 x 8 RAM supports working data and stack operations, while 17 general-purpose I/O pins provide connections to sensors, displays, actuators, and communication circuits. The ADC subsystem includes an eight-input multiplexer, a programmable gain stage with a 128x gain setting, no-missing-code operation with 0.0015% nonlinearity, and conversion rates up to 1 ksps.
The mixed-signal architecture places measurement and control functions on one system-on-a-chip device. Its ADC can sample multiple analog inputs through the eight-input multiplexer, while the programmable gain stage allows the front end to accommodate signals of different amplitudes. Two 8-bit DACs, a built-in temperature sensor, an internal oscillator, power-on reset, VDD monitoring, and watchdog support reduce the number of external support components required in a compact embedded design.
Typical uses include industrial sensor acquisition, temperature measurement, process monitoring, low-cost instrumentation, and compact embedded control systems. The 50 MHz core is suitable for protocol handling, digital control, and foreground/background task execution, while the ADC and temperature sensor support local measurement without external conversion hardware. The 32-LQFP package also permits automated board assembly and is practical for moderate pin-count control boards.
Design the power, clock, analog, and digital sections carefully. Keep analog and digital return currents separated, place analog bypass capacitors near the supply pins, and route sensor inputs away from fast-switching traces. Confirm the required supply voltage and operating temperature against the manufacturer datasheet before releasing the PCB, because those limits are not stated in the product-page summary.
This page combines the C8051F350-GQ electrical specifications, mixed-signal application guidance, package details, comparison information, and practical replacement considerations. It is structured to help engineers identify whether the 50 MHz 8051-compatible core, 24-bit ADC subsystem, 8 KB flash memory, and 32-LQFP footprint fit a specific embedded-control design.
ドロップイン代替品: C8051F350-GQ — 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。
C8051F351-GQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
C8051F352-GQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
C8051F353-GQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
C8051F366-GQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
C8051F350-GQ 最大定格＆電気的特性
| Processor Core | 8051-compatible pipelined core |
| データバス幅 | 8 bit |
| 最大クロック周波数 | 50 MHz |
| Program Memory | 8 KB (8K x 8 flash) |
| RAM | 768 x 8 bit (768 bytes) |
| General-Purpose I/O | 17 pins |
| ADC Resolution | 24 bit |
| ADC Conversion Rate | Up to 1 ksps |
| ADC Nonlinearity | 0.0015% no missing codes |
| ADC Input Multiplexer | 8 inputs |
| Programmable Gain Amplifier | 128x maximum gain |
| DAC Resolution | 2 x 8 bit |
| パッケージ | 32-LQFP (7 x 7 mm) |
| Oscillator | Internal clock oscillator |
| Packaging | Tray |
| System Functions | Power-on reset, VDD monitor, watchdog timer, and internal temperature sensor |
C8051F350-GQ 32-lqfp (7 x 7 mm) ピン配置ガイド
C8051F350-GQ (32-lqfp (7 x 7 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: C8051F350-GQ.
詳細は データシート をご参照ください。
主な用途
C8051F350-GQ の用途: 6 件s: Industrial Sensor Acquisition, Temperature Measurement and Control, Process Monitoring, Precision Instrumentation, Embedded Control Systems, Smart Sensor Nodes.
Industrial Sensor Acquisition
The C8051F350-GQ fits industrial sensor-acquisition systems requiring high-resolution conversion without a separate ADC. Its 24-bit ADC, eight-input multiplexer, and programmable gain stage reaching 128x allow several sensor channels to share one front end while preserving useful signal amplitude. The 50 MHz 8051-compatible core can handle filtering, calibration, diagnostics, and communications, while 8 KB of flash and 768 bytes of RAM support compact embedded firmware. Keep sensor traces short and separate analog return paths from digital switching currents to preserve conversion performance.
おすすめ
Temperature Measurement and Control
The C8051F350-GQ is suitable for compact temperature-monitoring equipment because it combines a 24-bit ADC with an internal temperature sensor and two 8-bit DAC outputs. Engineers can use the ADC multiplexer for external probes while the internal sensor provides an on-chip measurement channel. The 50 MHz processor supports control calculations, display updates, alarms, and communication tasks, and the 17 I/O pins are useful for relay, indicator, and interface signals. Validate sensor accuracy and calibration across the intended temperature range before finalizing the production design.
おすすめ
Process Monitoring
The C8051F350-GQ supports process-monitoring equipment that must acquire several low-level analog inputs and perform local control. Its eight-input ADC multiplexer reduces the number of external analog switches, while the 128x programmable gain stage can accommodate sensor outputs with different signal levels. The 24-bit conversion system operates at rates up to 1 ksps, and the 50 MHz core can execute acquisition sequencing, digital filtering, threshold decisions, and data transfer. Place the analog interface away from high-current switching nodes and use a quiet ground strategy around the MCU.
おすすめ
Precision Instrumentation
The C8051F350-GQ is well matched to compact measurement instruments that combine digital processing with sensitive analog inputs. Its 24-bit ADC, 0.0015% no-missing-code nonlinearity, and programmable gain stage support accurate signal acquisition, while the 50 MHz pipelined core handles control logic and data presentation. Two 8-bit DACs can generate reference or excitation signals without separate converters. The 32-LQFP 7 x 7 mm package keeps the device compact, although careful grounding, reference design, and calibration are essential for repeatable high-resolution results.
おすすめ
Embedded Control Systems
The C8051F350-GQ serves embedded control tasks requiring moderate processing speed, mixed-signal I/O, and compact memory. A 50 MHz 8051-compatible core can execute background acquisition alongside foreground control, while 17 I/O pins connect switches, displays, actuators, and external interfaces. On-chip power-on reset, VDD monitoring, watchdog timer, and internal oscillator reduce the number of supporting components. Designers should implement brownout behavior, watchdog servicing, and analog grounding according to the manufacturer recommendations, particularly when controlling loads near the MCU supply rails.
おすすめ
Smart Sensor Nodes
The C8051F350-GQ can support compact smart-sensor nodes that acquire local measurements and then process or transmit the resulting data. Its eight-channel analog multiplexer, 24-bit ADC, 128x gain capability, and internal temperature sensor reduce sensor-node complexity. The 50 MHz core provides enough performance for filtering, calibration, status monitoring, and communication routines, while 8 KB of flash accommodates organized embedded firmware. Low-power behavior should be evaluated against the required sampling rate and communication duty cycle because the device is primarily suited to compact mixed-signal measurement nodes.
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: C8051F350-GQ — 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 | C8051F351-GQ | C8051F352-GQ | C8051F353-GQ | C8051F366-GQ |
|---|---|---|---|---|---|
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Processor Core | 8-bit 8051-compatible pipelined core | 8-bit 8051-compatible pipelined core | 8-bit 8051-compatible pipelined core | 8-bit 8051-compatible pipelined core | 8-bit C8051 family core |
| Maximum Clock Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | Not stated |
| Program Memory | 8 KB flash | 8 KB flash | 8 KB flash | 8 KB flash | Not stated |
| RAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | Not stated |
| ADC Resolution | 24 bit | Family ADC variant differs | Family ADC variant differs | Family ADC variant differs | Not stated |
| General-Purpose I/O | 17 pins | 17 pins | 17 pins | 17 pins | Not stated |
| ADC Multiplexer | 8 inputs | 8 inputs | 8 inputs | 8 inputs | Not stated |
| Programmable Gain | 128x maximum | 128x maximum | 128x maximum | 128x maximum | Not stated |
| DAC Outputs | 2 x 8 bit | 2 x 8 bit | 2 x 8 bit | 2 x 8 bit | Not stated |
| Order Packaging | Tray | Tray | Tray | Tray | Not stated |
主な差別化要因
- Directly integrates high-resolution conversion and signal generation （vs C8051F366-GQ)
- Maintains the principal digital resource classes across the C8051F35x alternatives （vs C8051F351-GQ)
- Provides a mixed-signal measurement front end without a separate ADC package （vs C8051F352-GQ)
- Combines control processing with integrated system supervision （vs C8051F353-GQ)
設計ノート
Separate analog and digital return paths as early as possible in the PCB stack-up. Connect the MCU analog ground and digital ground according to the manufacturer reference layout, and keep sensor inputs away from clock, switching-regulator, and high-current actuator traces. The C8051F350-GQ has eight ADC inputs and a programmable gain reaching 128x, so trace coupling can become more significant as the input signal is amplified. Use a continuous ground reference beneath the analog section and avoid routing analog signals across split-ground boundaries.
Place the required bypass capacitors close to the C8051F350-GQ supply pins and follow the manufacturer’s recommended capacitance and placement. The on-chip VDD monitor supports supply supervision, but it does not replace correct power distribution. Confirm the allowed supply range, total current, and analog-reference requirements in the Silicon Labs C8051F350 datasheet before selecting regulators or bulk capacitance. Keep the analog reference and DAC supply paths quiet because those nodes can influence measurement repeatability.
Do not assume that every C8051F35x order code is interchangeable at the firmware level. The C8051F351-GQ, C8051F352-GQ, and C8051F353-GQ retain the 50 MHz core class, 8 KB flash class, 768-byte RAM class, and 32-LQFP footprint, but their ADC and peripheral selections differ. Review the device feature table, register map, interrupt configuration, and analog-channel assignments before replacing the C8051F350-GQ. Preserve the watchdog and power-on-reset behavior when adapting existing control firmware.
Treat analog inputs as precision signal paths rather than general digital nets. The 24-bit ADC can resolve fine voltage changes, but that benefit is reduced by source impedance, thermal gradients, ground bounce, and switching noise. Use a suitable acquisition filter, terminate source impedance in accordance with the amplifier or sensor design, and place protection networks away from the ADC pins. Calibrate gain and offset in the final system because analog tolerances and reference accuracy directly affect the 24-bit measurement path.
コンプライアンス情報
RoHS and REACH details must be confirmed using the manufacturer product documentation or current material declaration. Automotive qualification is not claimed for this MCU.