C8051F500-IQ - 50MHz 8051 MCU, 64KB Flash | Silicon Labs
部品番号: C8051F500-IQ ✓ 生産中C8051F500-IQ 概要
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.
ドロップイン代替品: C8051F500-IQ — 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。
C8051F501-IQ
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →C8051F504-IQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
C8051F505-IQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
C8051F500-IQ 最大定格＆電気的特性
| Product Type | 8-bit mixed-signal microcontroller |
| Processor Core | 8051 |
| 最大クロック周波数 | 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 |
| 電源電圧 | 5 V |
| パッケージ | 48-pin TQFP, 7 x 7 mm |
| 実装タイプ | Surface mount |
| Temperature Grade | Automotive |
| Programming | In-system programmable Flash |
C8051F500-IQ 48-pin tqfp, 7 x 7 mm ピン配置ガイド
C8051F500-IQ (48-pin tqfp, 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: C8051F500-IQ.
詳細は データシート をご参照ください。
主な用途
C8051F500-IQ の用途: 6 件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.
エンジニアリング参考データ: C8051F500-IQ — 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 | 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 |
主な差別化要因
- Combines 50 MIPS processing with mixed-signal measurement （vs C8051F501-IQ)
- Automotive communications and control integration （vs C8051F504-IQ)
- Space-conscious mixed-signal MCU package （vs C8051F505-IQ)
設計ノート
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.
コンプライアンス情報
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.