C8051F041R - 25MHz Mixed-Signal 8051 MCU with 64KB Flash (Tape & Reel)
MPN： C8051F041R ✓ 啟用中C8051F041R 概覽
An 8-bit microcontroller is a programmable semiconductor that integrates a CPU, nonvolatile program memory, data memory, and peripherals on one die. The C8051F041R belongs to the 8051 family, which combines a mature instruction set with mixed-signal peripherals for embedded control. Its position in the hierarchy is microcontroller → 8-bit MCU → mixed-signal MCU → embedded control platform.
Key features include a 25MHz operating frequency and advertised performance of 25 MIPS, 64KB of in-system programmable flash, and 4.25KB of on-chip RAM. Its analog subsystem includes a 12-bit successive-approximation ADC with 13 input channels, programmable throughput up to 100ksps, and three comparators. CAN 2.0B support allows the MCU to participate in embedded CAN networks.
The C8051F041R uses the Silicon Labs C8051F04x architecture, combining an enhanced 8051-compatible core with separate high-speed analog subsystems. The verified distributor description identifies both 10-bit and 12-bit conversion options across the family and notes a 100ksps ADC operating mode. This makes the device useful where digital control, local analog measurement, and deterministic communication must coexist in a compact embedded design.
Typical applications include industrial sensor-control equipment, building automation nodes, CAN-connected instrumentation, motor or process-control modules, and compact consumer appliances. The 12-bit ADC is appropriate for monitoring external analog transducers, while the comparators can support threshold detection, fault signaling, or simple control functions without occupying a separate analog IC.
The primary design consideration is power-domain integration. The verified source identifies a 2.7V to 3.6V supply range, so the MCU and its analog peripherals must be operated from a compatible 3.3V rail. Board design must also preserve clean analog return paths, provide suitable bypassing, and isolate communications and switching nodes from sensitive ADC inputs.
This page consolidates verified distributor specifications, package information, pricing context, cross-reference findings, and practical design guidance. It also distinguishes documented drop-in replacements from unverified alternatives, helping engineers avoid assuming that a similar MCU is pin-compatible without checking its complete electrical and pin definitions.
直接替換替代品，適用於 C8051F041R — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品C8051F041R 最大額定值與電氣特性
| Core Architecture | Enhanced 8051-compatible CIP-51 core |
| CPU Bit Width | 8 bit |
| 最大時脈頻率 | 25 MHz |
| Advertised Processing Performance | 25 MIPS |
| Flash Memory | 64 KB |
| Program Memory Type | In-system programmable flash |
| On-Chip RAM | 4.25 KB |
| ADC Resolution | 12 bit |
| ADC Input Channels | 13 channels |
| ADC Throughput | 100 ksps |
| Comparators | 3 |
| Communication Controller | CAN 2.0B |
| Supply Voltage Range | 2.7 V to 3.6 V |
| 封裝 | 64-TQFP (10 mm x 10 mm) |
| 安裝類型 | Surface mount |
| 腳位數 | 64 pins |
C8051F041R 64-tqfp (10 mm x 10 mm) 腳位配置指南
C8051F041R（64-tqfp (10 mm x 10 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： C8051F041R.
請參閱 資料表 以查看完整腳位配置。
典型應用
C8051F041R 適用於 6 應用s: Industrial Sensor Monitoring, CAN-Connected Control Module, Building Automation Node, Precision Threshold and Comparator Control, Process Control and Actuator Interface, Compact Consumer Appliance Controller.
Industrial Sensor Monitoring
The C8051F041R fits industrial sensor-monitoring nodes because its 12-bit ADC supports 13 channels at up to 100ksps while the 25MHz core handles local filtering, control, and diagnostics. The 3.3V supply range suits compact 3.3V instrumentation, and 64KB of in-system programmable flash permits application-specific firmware. A typical design routes conditioned transducer outputs to the ADC inputs, uses the three comparators for threshold events, and retains CAN 2.0B for reporting to a higher-level controller. The verified excerpts do not provide the ADC input impedance or recommended matching network, so the analog front end must be designed from the complete manufacturer datasheet rather than inferred from the distributor summary.
推薦
CAN-Connected Control Module
The C8051F041R is appropriate for CAN-connected control modules because the verified feature set includes a CAN 2.0B controller alongside a 25MHz, 25-MIPS core. The MCU can execute supervisory logic, convert analog conditions into control decisions, and communicate status over the network, while the external transceiver handles the physical bus layer. Its 4.25KB of RAM and 64KB of flash provide a reasonable balance for protocol handling and local state. Designers should separately budget termination, bus protection, isolation, and transceiver standby behavior; the target MCU's controller is not a complete physical-layer CAN solution.
推薦
Building Automation Node
The C8051F041R can serve as the mixed-signal controller in a compact building-automation node that monitors environmental or equipment inputs and communicates over CAN. Its 13-channel 12-bit ADC supports multiple analog sensors, while three comparators can handle independent limit detection or digital threshold functions. With 64KB of programmable flash, the device can support protocol handling, calibration data, and application logic in a single package. Because the supplied evidence identifies only the MCU's 2.7V to 3.6V supply range, the complete production design must verify operating-temperature grade, EMC requirements, and low-power behavior for its intended building environment.
推薦
Precision Threshold and Comparator Control
The C8051F041R is useful in equipment where analog thresholds must be detected independently while the main controller continues running. Its three integrated comparators can monitor critical signals and trigger firmware events, complementing the 12-bit ADC used for calibrated measurement. The 25MHz processing speed allows the firmware to combine comparator status, sampled measurements, and communication tasks without relying on an external discrete comparator for every channel. Exact comparator response time, input range, and programmable-hysterollis details are not included in the supplied excerpts and must be checked in the manufacturer datasheet before setting timing limits.
推薦
Process Control and Actuator Interface
The C8051F041R supports compact process-control front ends by combining rapid analog acquisition with deterministic embedded logic. A 12-bit ADC sampling at up to 100ksps is suitable for monitoring conditioned pressure, temperature, or position signals, while the 25MHz core performs scaling, filtering, and control calculations. The three comparators can provide fast qualification signals for alarms or interlocks, and CAN 2.0B enables coordination with remote I/O. Actuator drivers should remain separate from the MCU where voltage or current demands are higher, and the exact ADC settling, acquisition, and reference requirements must be obtained from the full manufacturer datasheet.
推薦
Compact Consumer Appliance Controller
The C8051F041R fits compact appliance controllers that need local analog measurement and networked control without a larger application processor. The 25MHz 8-bit core can supervise buttons, sensors, timers, and communication routines, while the 12-bit ADC and three comparators reduce the need for separate analog components. Its 2.7V to 3.6V operating range aligns with many 3.3V appliance architectures, and 64KB of flash supports comparatively capable firmware. The MCU does not provide the isolation or safety certification of the finished appliance, so mains-connected products require appropriately separated power and interface designs.
推薦
推薦產品摘要
工程參考資料，適用於 C8051F041R — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 64-TQFP (10 mm x 10 mm) |
| Brand | Silicon Labs |
| Core Architecture | Enhanced 8051-compatible CIP-51 core |
| Maximum Clock Frequency | 25 MHz |
| Processing Performance | 25 MIPS |
| Flash Memory | 64 KB in-system programmable flash |
| On-Chip RAM | 4.25 KB |
| ADC | 12-bit, 13 channels, up to 100 ksps |
| Comparators | 3 |
| Communication | CAN 2.0B |
| Supply Voltage | 2.7 V to 3.6 V |
| Mounting Type | Surface mount |
主要差異化特點
- Integrates a dedicated CAN 2.0B controller (對比C8051F001)
- Provides 13-channel 12-bit conversion at 100ksps (對比C8051F005)
- Documented orderable 64-TQFP configuration (對比C8051F041RR)
設計說明
Place the MCU's supply decoupling immediately adjacent to its power terminals and provide a low-impedance 3.3V distribution path across the 2.7V to 3.6V operating range. Keep analog inputs and comparator inputs away from CAN traces, switching nodes, and high-current return paths. The supplied excerpts do not state the manufacturer's recommended capacitor values, so the complete datasheet and its reference schematic should govern final placement and component selection.
Treat the 13-channel, 12-bit ADC as a sensitive mixed-signal subsystem rather than as a general-purpose digital input bank. Use short traces, defined analog return paths, and a source impedance appropriate to the acquisition cycle specified by the manufacturer. If sensors are remote or noisy, use suitable buffering rather than relying on digital filtering alone. Comparator inputs should also be checked for voltage limits and switching noise because their thresholds may act on low-energy signals.
Do not substitute a superficially similar C8051-family device solely because it uses a 64-pin package. Verify every numbered terminal, 3.3V supply compatibility, 64KB flash and 4.25KB RAM requirements, ADC architecture, comparator count, CAN 2.0B controller, peripheral mapping, and programming-tool support. C8051F041R-GQ is the verified 64-TQFP orderable listing, while the supplied cross-reference results do not establish any alternate MPN as a pin-to-pin drop-in.
合規資訊
The supplied verified excerpts do not provide product-specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than being inferred from general distributor listings.