C8051F046 - 25MHz 8-Bit MCU with 32KB Flash | Silicon Labs
料号： C8051F046 ✓ 量产中C8051F046 概述
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripheral interfaces, and I/O into one device. The C8051F046 belongs to the C8051 8-bit microprocessor family, where the 8051-compatible instruction set provides a compact platform for embedded control. Its mixed-signal and communications features make it suitable for industrial controllers, CAN-connected equipment, data acquisition systems, and legacy embedded designs.
The C8051F046's headline specifications are its 25 MHz operating frequency, 32 KB flash memory, and 10-bit ADC. The supplied distributor information also identifies CAN capability, while the package listing specifies 100-TQFP (14 x 14 mm). These features support designs that require programmable logic, analog measurement, and network communication in one device. The C8051F04x designation identifies the family rather than implying that every family member has identical peripheral resources.
The supplied search results describe the processor as a 25 MIPS device and identify the C8051F046 as an 8-bit, legacy-speed processor compatible with ASM51 instructions. This architecture is useful for control-oriented embedded products where a deterministic, compact instruction set and established 8051 software ecosystem are more important than a high-performance 32-bit or 64-bit core.
Typical applications include industrial data logging, CAN-node controllers, motor and process-control equipment, instrumentation, and embedded systems connected to legacy 8051 peripherals. The ADC provides a direct path for analog sensor inputs, while CAN allows the controller to exchange data with other embedded nodes. Firmware selection must nevertheless confirm the exact peripheral map, pin assignments, and electrical limits for the chosen ordering code.
Designers should use the official device documentation for the complete 100-pin pinout, power sequencing, clock configuration, and decoupling requirements. Because the supplied data does not expose individual pin functions, the C8051F046 pinout is marked unavailable rather than reconstructed from assumptions. This page distinguishes the base device from orderable package suffixes such as -GQ and -GQR and focuses on verified distributor and manufacturer-document information.
直接替换替代料： C8051F046 ——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： C8051F046 （相同外形与封装尺寸） ——差异在于 ADC Resolution, Package, Communication Interface, Flash Memory, Product Type.
C8051F046-GQ
✅ 直接替换📋 参考替代料（不在目录中）
C8051F041-GQ
✅ 直接替换📋 参考替代料（不在目录中）
C8051F040-GQ
✅ 直接替换📋 参考替代料（不在目录中）
C8051F046 最大额定值与电气特性
| Device Type | 8-bit Microcontroller |
| Processor Family | C8051F04x |
| 最大时钟频率 | 25 MHz |
| Instruction Throughput | 25 MIPS |
| Program Memory | 32 KB flash |
| Program Memory Organization | 32K x 8 |
| Flash Programming | In-system programming (ISP) |
| RAM Size | 4.25K x 8 |
| ADC Resolution | 10 bit |
| Communication Interface | CAN |
| Supply Voltage Range | 2.7 V to 3.6 V |
| 封装 | 100-TQFP (14 x 14 mm) |
| Lead Count | 100 pins |
| 安装类型 | Surface Mount |
| Orderable Package Suffix | -GQ / -GQR |
C8051F046 -gq / -gqr 引脚配置指南
C8051F046（-gq / -gqr 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： C8051F046.
请参阅 数据手册 以查看完整引脚配置。
典型应用
C8051F046 适用于 6 应用s: CAN-Connected Industrial Control Node, Analog Sensor Data Acquisition, Process and Motor Control, Instrumentation and Test Equipment, Legacy 8051 Embedded Products, Communication Gateway and Protocol Bridge.
CAN-Connected Industrial Control Node
The C8051F046 fits a CAN-connected industrial controller because the supplied data identifies CAN capability, a 25 MHz 8-bit core, 32 KB of flash, and a 100-TQFP package. The MCU can execute machine-control logic while a CAN controller communicates supervisory commands and status data to a wider system. The design should use a suitable external CAN transceiver, bus protection, and correct termination. Firmware and PCB decisions must follow the verified 100-pin device documentation because the supplied sources do not enumerate peripheral channels or pin assignments.
推荐
Analog Sensor Data Acquisition
The C8051F046 supports analog measurement systems with its documented 10-bit ADC and 25 MHz operating frequency. It can sample conditioned sensor signals, apply digital filtering, and store operational information in its 32 KB flash and 4.25K x 8 RAM. The ADC resolution is appropriate for many process-monitoring tasks where high precision is not required, although analog front-end design still determines overall accuracy. Engineers must verify the available ADC channels, input ranges, sampling behavior, and pin locations in the exact device datasheet before finalizing the circuit.
推荐
Process and Motor Control
The C8051F046 is suitable for compact process-control and motor-control logic because its C8051-compatible 8-bit core runs at up to 25 MHz and is supported by 32 KB of flash, 4.25K x 8 RAM, a 10-bit ADC, and CAN communications. A controller can combine feedback measurement with command processing and supervisory network traffic. The exact PWM, timer, and capture resources are not present in the supplied data and therefore must be confirmed from the manufacturer document before assigning motor-control functions or selecting pin multiplexing.
推荐
Instrumentation and Test Equipment
The C8051F046 can serve as the embedded controller in compact instrumentation because it combines a 25 MIPS-class 8051-compatible core with a 10-bit ADC, 32 KB flash, and 4.25K x 8 RAM. Those resources support measurement acquisition, calibration tables, status display, and host communication. The mixed-signal MCU approach simplifies the control architecture, but accurate instrumentation still depends on low-noise analog design, reference selection, grounding, and firmware calibration. Verify the ADC and timing resources directly against the device documentation before claiming laboratory-grade accuracy.
推荐
Legacy 8051 Embedded Products
The C8051F046 is well matched to legacy-compatible embedded products because it executes the ASM51-based 8051 instruction set while adding a 10-bit ADC and CAN communication. It can preserve established control software and peripheral familiarity while providing a 100-lead TQFP option for denser boards. Migration is less disruptive than moving to a different instruction set, but firmware still needs review for the C8051F04x memory map, SFR definitions, oscillator configuration, and startup vector. The supplied data does not identify development-tool compatibility.
推荐
Communication Gateway and Protocol Bridge
The C8051F046 can be used in a compact protocol gateway because its 25 MHz 8051-compatible processor handles message logic while CAN communication provides a backbone for connected equipment. Additional serial interfaces can support host links or local configuration, subject to the exact peripheral assignments. Its 32 KB flash accommodates embedded protocol handlers, and 4.25K x 8 RAM is available for buffering. Firmware should include frame validation, timeouts, escalation, and bus fault handling, while the hardware design must account for transceiver selection, isolation, and ESD protection.
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推荐产品汇总
工程参考数据： C8051F046 ——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 | C8051F046-GQ | C8051F041-GQ | C8051F040-GQ |
|---|---|---|---|---|
| Package | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Processor Architecture | 8-bit 8051-compatible | 8-bit 8051-compatible | 8-bit C8051F04x family | 8-bit C8051F04x family |
关键差异点
- Matches the target device rating through the documented -GQ ordering configuration （对比 C8051F046-GQ)
- Provides a documented same-family migration path without changing the package format （对比 C8051F041-GQ)
- Preserves an established 8051 software environment （对比 ATMEGA328P-MNR)
设计说明
Use the 100-TQFP (14 x 14 mm) footprint and verify every signal assignment against the exact C8051F046 datasheet before routing. The supplied data confirms the package and lead count but does not provide the individual pin map, so oscillator, programming, reset, ADC, and CAN assignments must not be inferred from family diagrams. Place required decoupling close to the supply pins and preserve the manufacturer-recommended land geometry for the 0.5 mm lead pitch.
Do not assume that every C8051F04x member has identical flash, RAM, ADC-channel, timer, or CAN resources. The target is documented with 32 KB flash, 4.25K x 8 RAM, a 10-bit ADC, CAN, and a 25 MHz clock, but the C8051F041-GQ and C8051F040-GQ alternatives require a complete peripheral and memory comparison. Also check the ordering suffix because the supplied results identify both -GQ and -GQR package variants.
Design the board around the documented 2.7 V to 3.6 V operating range and provide stable supply and ground distribution. Because no external CAN transceiver is integrated, its supply design must also accommodate the selected transceiver and account for transceiver current separately from the microcontroller. Confirm pin-specific decoupling and voltage constraints from the manufacturer documentation rather than deriving them from generic 8051 examples.
合规信息
The supplied search results do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for C8051F046. Compliance must be confirmed using the current Silicon Labs product documentation or manufacturer declaration for the selected ordering code.
