C8051F500-IQ - 50MHz 8051 MCU, 64KB Flash | Silicon Labs
料号： C8051F500-IQ ✓ 量产中C8051F500-IQ 概述
An 8051 microcontroller is an embedded processing platform that integrates a CPU, program memory, data memory, peripherals, and digital I/O on one semiconductor device. The C8051F50x family combines the widely established 8051 architecture with mixed-signal and communications peripherals. This hierarchy places the device in the MCU family, within embedded semiconductors and broader embedded processing systems.
The C8051F500-IQ provides 40 digital I/O lines, 64 KB of Flash, 256 bytes of data RAM, 4 KB of auxiliary RAM, a 12-bit ADC with up to 32 channels, two analog comparators, and six Programmable Counter Array channels. Its 24 MHz on-chip oscillator supports the stated 50 MIPS throughput, while the integrated CAN and LIN interfaces support common vehicle and industrial communication networks.
The C8051F500-IQ belongs to the C8051F50x mixed-signal MCU family, whose members offer pin-for-pin compatibility across the C8051F50x, C8051F51x, and C8051F58x/59x series within compatible package configurations. The manufacturer datasheet remains the controlling document for device-specific pin multiplexing, electrical limits, clocking, programming, and peripheral behavior. Pin assignments should be selected from the package pinout and alternate-function tables rather than inferred from the peripheral list.
Typical uses include automotive body and chassis controllers, CAN or LIN network nodes, industrial monitoring equipment, sensor interfaces, and compact embedded controls that need local analog measurement. Its 50 MHz processing rate supports responsive control loops, while the 12-bit ADC provides measurement resolution without requiring a separate external converter in suitably partitioned systems.
Designers should preserve the required bypass network, confirm the selected clock configuration, and program unused I/O pins according to the manufacturer’s recommended initialization procedure. Because the device combines high-speed digital operation with analog inputs, layout should keep analog inputs away from noisy clock and return paths, provide a quiet analog reference arrangement, and follow the recommended ground-plane strategy in the datasheet.
This page consolidates the device’s key electrical, memory, connectivity, package, and mixed-signal characteristics with application guidance, pin-compatible family options, and engineering-focused design notes. Use the manufacturer datasheet for final clock, pin-function, programming, and qualification decisions.
直接替换替代料： C8051F500-IQ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
C8051F501-IQ
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →C8051F504-IQ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
C8051F505-IQ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
C8051F500-IQ 最大额定值与电气特性
| Product Type | 8-bit mixed-signal microcontroller |
| Processor Core | 8051 |
| 最大时钟频率 | 50 MHz |
| Execution Throughput | 50 MIPS |
| On-Chip Oscillator | 24 MHz |
| Flash Memory | 64 KB |
| Flash Organization | 64K x 8 bits |
| Data RAM | 256 bytes |
| Auxiliary RAM | 4 KB |
| Digital I/O Lines | 40 lines |
| ADC Resolution | 12 bits |
| ADC Channels | 32 channels |
| Analog Comparators | 2 |
| Programmable Counter Array Channels | 6 channels |
| Connectivity | CAN and LIN |
| 电源电压 | 5 V |
| 封装 | 48-pin TQFP, 7 x 7 mm |
| 安装类型 | Surface mount |
| Temperature Grade | Automotive |
| Programming | In-system programmable Flash |
C8051F500-IQ 48-pin tqfp, 7 x 7 mm 引脚配置指南
C8051F500-IQ（48-pin tqfp, 7 x 7 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： C8051F500-IQ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
C8051F500-IQ 适用于 6 应用s: Automotive CAN Network Controller, Automotive LIN Sub-Network Controller, Industrial Sensor Interface, Automotive Body Control Module, Mixed-Signal Control Console, Embedded Communications Gateway.
Automotive CAN Network Controller
The C8051F500-IQ fits an automotive CAN node that must combine message handling, digital I/O, and local sensing in one 48-pin device. It operates on a 5 V supply, provides up to 40 digital I/O lines, and executes up to 50 MIPS, leaving useful processing margin for protocol handling and application logic. Its 12-bit, 32-channel ADC can monitor vehicle sensors without requiring a separate converter. Place the MCU beside the CAN transceiver, route the digital interface away from analog inputs, and verify timing and electrical limits in the manufacturer datasheet before production release.
Automotive LIN Sub-Network Controller
The C8051F500-IQ is suitable for a LIN-connected body or comfort subsystem because it integrates LIN communication with 40 digital I/O lines and mixed-signal measurement. The 50 MHz core can support LIN handling alongside debouncing, diagnostic logic, and actuator control. Use its ADC channels for potentiometer, temperature, or pressure sensing where the required input range and sampling rate meet the application. Because automotive implementations demand careful bus protection and grounding, place the MCU according to the datasheet reference layout and validate transceiver, ESD, and power-supply behavior separately.
Industrial Sensor Interface
The C8051F500-IQ works well as a compact industrial sensor interface when a design needs local 12-bit conversion alongside deterministic control. Its 32 ADC channels, two analog comparators, and six Programmable Counter Array channels can support monitoring, threshold detection, pulse capture, and timing functions. The 64 KB Flash stores application firmware and 256 bytes of data RAM plus 4 KB of auxiliary RAM provide working memory. Keep analog traces away from digital switching paths, provide stable decoupling, and confirm the selected ADC input range against the transmitter’s signal level.
Automotive Body Control Module
The C8051F500-IQ can serve as the central controller in a compact body-control module that coordinates digital loads while monitoring analog inputs. Its 40 I/O lines, 50 MIPS throughput, CAN, and LIN support provide a useful combination of control performance and network connectivity in a 7 x 7 mm TQFP package. The device is particularly attractive where space is constrained but a through-hole or larger controller would be unnecessary. Drive external relays and lamps through suitable protection circuitry rather than loading GPIO pins directly, and follow sequencing recommendations in the manufacturer datasheet.
Mixed-Signal Control Console
The C8051F500-IQ fits a mixed-signal control console that combines operator inputs, status indication, sensing, and serial communication. Its 12-bit ADC supports more precise measurements than an 8-bit converter, while six PCA channels can provide timers, capture, compare, and PWM functions for timing-oriented control. The 40 GPIO lines can support keys, displays, and discrete interface signals. Design the analog section around a quiet reference and local bypass network, then review every alternate-function assignment to prevent conflicts between peripherals and general-purpose I/O.
Embedded Communications Gateway
The C8051F500-IQ is appropriate for a small embedded gateway or protocol bridge that must move information between CAN, LIN, and discrete I/O. Its 50 MHz execution rate provides capacity for protocol processing beyond the 64 KB of in-system programmable Flash, while the 12-bit ADC permits local diagnostic measurements. The 48-pin TQFP package supports board consolidation without using a large microcontroller module. For reliable deployment, isolate communication routing from sensitive analog inputs, provide a clean supply for each functional block, and verify watchdog, clock, and peripheral initialization settings in the manufacturer datasheet.
工程参考数据： C8051F500-IQ ——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 | C8051F501-IQ | C8051F504-IQ | C8051F505-IQ |
|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | 48-pin TQFP (7 x 7 mm) | 48-pin TQFP (7 x 7 mm) | 48-pin TQFP (7 x 7 mm) | 48-pin TQFP (7 x 7 mm) |
| Processor Core | 8051, 8-bit | 8051, 8-bit | 8051, 8-bit | 8051, 8-bit |
关键差异点
- Combines 50 MIPS processing with mixed-signal measurement （对比 C8051F501-IQ)
- Automotive communications and control integration （对比 C8051F504-IQ)
- Space-conscious mixed-signal MCU package （对比 C8051F505-IQ)
设计说明
Follow the Silicon Labs manufacturer datasheet layout for decoupling, power, ground, and analog routing. Place the required input and output capacitors adjacent to the associated supply pins, use a continuous ground plane where appropriate, and isolate sensitive ADC traces from clock and high-current switching paths. The mixed-signal pin muxing must be reviewed against the selected board functions before traces are assigned.
Design the 5 V supply path for both the MCU and its external CAN or LIN interface, including adequate local bypass and correct decoupling placement. Check every pin's I/O voltage domain against the chosen external transceiver or sensor levels. Do not infer termination, bus protection, or transceiver power requirements from the MCU datasheet; those functions belong in the associated bus-interface circuitry.
Route communication signals away from ADC inputs and the 24 MHz oscillator region, maintain short return paths, and observe manufacturer clock-layout guidance. For mixed-signal products, ground the analog interface in the manner shown by the datasheet reference layout. Validate the analog input bandwidth and sampling requirements with the actual sensor output rather than relying only on the nominal 12-bit converter resolution.
Do not assume that family-level pin compatibility guarantees that every alternate peripheral function is identical. Compare the exact pin-description, package drawing, memory, ADC-channel, CAN/LIN, electrical-limit, and temperature-grade tables for C8051F500 and each candidate. Initialize unused I/O pins according to the manufacturer recommendations and test reset, watchdog, clock-startup, and peripheral-sharing behavior in prototype firmware.
合规信息
The product is identified as automotive-grade, but specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the manufacturer.