C8051F300 - 25MHz 8-Bit Mixed-Signal MCU | Silicon Labs
料号： C8051F300 ✗ 停产C8051F300 概述
An 8-bit mixed-signal microcontroller is a compact embedded-processing device that combines a digital CPU with analog measurement functions on one semiconductor die. The C8051F300 belongs to the broader hierarchy of microcontroller, embedded processor, and semiconductor. Its mixed-signal integration allows software to acquire analog inputs and control digital outputs without requiring a separate analog-to-digital converter.
The C8051F300's principal features include 25 MHz processing performance, 8 kB of Flash program memory, 0.25 kB of RAM, three 16-bit timers, an 8-bit ADC, and on-chip 2-Wire debugging. The compact 3 x 3 mm QFN11 package supports space-constrained designs while exposing a mixed set of digital I/O and analog-capable resources. Its integrated debug interface also supports memory inspection, register modification, breakpoints, and single-step execution.
The device uses the compatible 8051 instruction set and is positioned as a low-cost embedded controller for applications requiring modest computation, periodic sensing, and mixed signal I/O. Silicon Labs' C2 debug architecture allows debugging of the production device installed in the end application. This can simplify firmware validation and reduce the need for separate debug headers or invasive fixture hardware.
Typical applications include compact industrial controllers, sensor-conditioning modules, low-cost instrumentation, embedded control panels, and small consumer devices. The 25 MHz clock and three 16-bit timers make it suitable for periodic measurement, timeout management, pulse counting, and basic control loops. The 8-bit ADC supports analog sensing where a dedicated external converter would add cost and board area.
Designers should verify the complete pinout, analog limits, power requirements, and programming configuration against the manufacturer datasheet before layout. Because the QFN11 package is compact, exposed-pad grounding, solder-paste control, and careful decoupling are important. Firmware development should use the supported Silicon Labs C2 toolchain and confirm that the selected ordering code matches the intended package and production requirements.
This page consolidates verified manufacturer information, distributor availability, pricing evidence, application guidance, and drop-in alternatives derived from the C8051F30x family. It also distinguishes confirmed electrical facts from parameters that require checking in the manufacturer datasheet, helping engineers evaluate the C8051F300 without overlooking footprint, memory, lifecycle, or tooling constraints.
直接替换替代料： C8051F300 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： C8051F300 （相同外形与封装尺寸） ——差异在于 Product Type, Package, RAM, Flash Memory, Processor Core.
C8051F301
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →C8051F302
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →C8051F303
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →C8051F304
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →C8051F305
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →C8051T600-GM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
C8051F300 最大额定值与电气特性
| Architecture | 8-bit 8051 MCU |
| 最大时钟频率 | 25 MHz |
| Flash Memory | 8 kB |
| RAM | 0.25 kB |
| ADC Resolution | 8 bit |
| Timer Count | 3 x 16-bit timers |
| 电源电压 | 3 V |
| 封装 | 11-QFN (3 x 3 mm) |
| 安装类型 | Surface Mount |
| Debug Interface | On-chip Silicon Labs 2-Wire (C2), full-speed in-circuit |
| Voltage Comparator | On-chip, software-enabled and configurable |
| Comparator Inputs | All Port I/O pins may be configured as comparator inputs |
C8051F300 11-qfn (3 x 3 mm) 引脚配置指南
C8051F300（11-qfn (3 x 3 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： C8051F300.
请参阅 数据手册 以查看完整引脚配置。
典型应用
C8051F300 适用于 6 应用s: Compact Industrial Sensor Controller, Portable Sensor and Monitoring Module, Low-Cost Instrumentation Front End, Small Consumer Control Module, Pulse Counting and Timing Control, Threshold Detection and Comparator Control.
Compact Industrial Sensor Controller
The C8051F300 fits compact sensor-control modules that must acquire an analog value and execute real-time control logic within a small board area. Its 25 MHz 8051 core provides processing headroom for periodic sampling, filtering, threshold evaluation, and actuator updates, while the integrated 8-bit ADC reduces the need for a separate converter. The 8 kB Flash can hold compact control firmware and the 0.25 kB RAM can support working variables. Its 3 x 3 mm QFN11 package is especially useful where sensor, connector, and power components compete for limited PCB space.
推荐
Portable Sensor and Monitoring Module
The C8051F300 is suitable for compact battery-powered sensing modules where low component count and simple embedded control are more important than high data throughput. The 8-bit ADC can read resistive, voltage-based, or other analog sensor outputs, while the three 16-bit timers support periodic sampling, wake timing, and measurement intervals. Its 8 kB Flash accommodates a small application firmware image, and integrated C2 debugging enables firmware validation without adding a large external debug connector. Power-consumption optimization still requires checking the datasheet's sleep, idle, and operating-current figures for the selected design.
推荐
Low-Cost Instrumentation Front End
The C8051F300 can serve as the acquisition and control MCU in a small instrumentation product with limited display, sensor, and communications requirements. Its 25 MHz 8051 core can process ADC samples, apply calibration, maintain thresholds, and update a local output, while the on-chip comparator provides a useful hardware threshold function alongside the 8-bit ADC. The three 16-bit timers allow precise interval generation, elapsed-time measurement, and input capture. Designers should verify analog accuracy, reference behavior, and calibration requirements in the manufacturer documentation before claiming measurement-class performance.
推荐
Small Consumer Control Module
The C8051F300 is appropriate for compact consumer devices that require a few inputs, local logic, and modest analog measurement without a high-performance processor. The 25 MHz core and 8 kB Flash are sufficient for simple state machines, button handling, LED or display control, and configurable timers, while the 3 x 3 mm QFN11 package preserves board area. The C2 debug interface can assist production firmware validation, although final programming and security procedures must follow Silicon Labs guidance. Feature creep should be monitored because the 0.25 kB RAM and 8 kB Flash are modest for protocol stacks or graphical interfaces.
推荐
Pulse Counting and Timing Control
The C8051F300's three 16-bit timers make it appropriate for compact modules that count pulses, implement fixed delays, or sequence multiple timing events. A 25 MHz CPU provides enough execution speed for debouncing, event processing, and communication formatting, while the integrated ADC can monitor a process or supply voltage alongside the timing functions. The 8 kB Flash is suitable for a focused timer-control application rather than a large user interface. Timer operating modes, capture widths, and interrupt priorities must be verified for the exact device member because the supplied excerpts do not enumerate them.
推荐
Threshold Detection and Comparator Control
The C8051F300 fits threshold-monitoring designs that can combine analog sensing with software-enabled decision logic. According to the Silicon Labs C8051F30x datasheet excerpt, the device contains an on-chip voltage comparator, and all Port I/O pins may be configured as comparator inputs. This permits a compact implementation in which the MCU monitors a signal, evaluates the result, and controls an output or communicates a state change. The integrated 8-bit ADC provides a complementary measurement path, while the 25 MHz core handles control logic. Exact comparator thresholds, response time, and input limitations require confirmation in the datasheet.
推荐
推荐产品汇总
工程参考数据： C8051F300 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | C8051F301 | C8051F302 | C8051F303 | C8051F304 | C8051F305 | C8051T600-GM |
|---|---|---|---|---|---|---|---|
| Package | 11-QFN (3 x 3 mm) | 11-QFN (3 x 3 mm) | 11-QFN (3 x 3 mm) | 11-QFN (3 x 3 mm) | 11-QFN (3 x 3 mm) | 11-QFN (3 x 3 mm) | 11-QFN (3 x 3 mm) |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| CPU Architecture | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 |
| Maximum Clock Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Debug Interface | On-chip Silicon Labs 2-Wire (C2) | On-chip Silicon Labs 2-Wire (C2) | On-chip Silicon Labs 2-Wire (C2) | On-chip Silicon Labs 2-Wire (C2) | On-chip Silicon Labs 2-Wire (C2) | On-chip Silicon Labs 2-Wire (C2) | Silicon Labs C2 |
关键差异点
- Compact integrated mixed-signal functionality （对比 C8051F301)
- Production-friendly integrated debugging （对比 C8051T600-GM)
- Known memory allocation for compact firmware （对比 C8051F302)
设计说明
Treat the 3 x 3 mm QFN11 footprint as a fine-pitch layout task. Confirm the land pattern, exposed-pad dimensions, solder-mask definition, and paste volume directly from the C8051F30x package drawing before releasing artwork. A no-clean process can still suffer voiding or solder bridging at this density, so inspection should include the underside and exposed-pad fillet. Do not reuse a generic 11-pin QFN footprint without comparing pad centers and thermal-pad geometry.
Place the required supply bypass capacitor as close as practical to the device's supply and ground pins, with a short, low-inductance return path to the ground reference. The verified operating point is 3 V, but current consumption, voltage tolerance, startup requirements, and analog reference sequencing are not present in the supplied excerpts; obtain those limits from the manufacturer datasheet before fixing capacitor values or regulator headroom. Verify the 3 V rail during analog conversion rather than assuming it is sufficiently quiet.
Do not treat the generic orderable name C8051F300 as proof that a board can accept every related suffix. The verified listings identify GM and GMR variants, and engineers must match the manufacturer ordering code, package, temperature grade, and production requirements. Likewise, do not substitute a family member solely because it is also an 11-QFN device. Compare pin-by-pin multiplexing, reset and oscillator behavior, ADC channels, timer resources, memory, voltage limits, and the Silicon Labs C2 toolchain before approving a drop-in replacement.
Keep analog inputs and the comparator-capable Port I/O away from fast digital switching traces and noisy power-converter loops. Route the analog ground reference carefully, maintain a continuous ground plane, and place input filtering or protection components near the connector or sensor interface. Because the supplied evidence specifies an 8-bit ADC and an on-chip comparator but not their full noise, reference, and oversampling characteristics, validate the complete front end with oscilloscope measurements under the intended operating conditions.
合规信息
The supplied verified excerpts do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. A Silicon Labs community result identifies C8051F300-GM as NRND. Confirm compliance and lifecycle status for the exact ordering suffix with Silicon Labs before production release.