R5F21182SP#U0 - 16-Bit 20MHz R8C MCU, 8KB Flash | Renesas
MPN： R5F21182SP#U0 ✓ 啟用中R5F21182SP#U0 概覽
A microcontroller is a programmable system-on-chip that combines a CPU core, program memory, data memory, peripheral interfaces, and clocking in one integrated circuit. The R8C R8C/1x/18 belongs to the Renesas R8C family, a 16-bit embedded-control platform positioned between simple 8-bit controllers and larger 32-bit application processors. The R5F21182SP#U0 is positioned for compact embedded-control tasks where modest flash capacity, a wide operating voltage, and a low-pin-count package are more useful than high-speed connectivity or large external memory interfaces.
The verified device specification identifies an R8C/1x/18 core, 20 MHz maximum operating frequency, and 8 KB of flash memory. The program-memory organization is listed as 8K x 8. This combination supports compact control firmware, peripheral configuration, and protocol handling where the application does not require a large graphical interface or extensive data logging. The 20-LSSOP package also supports compact PCB layouts where a larger QFP or BGA option would be unnecessary.
Renesas positions the R8C/18 and R8C/19 groups for appliances, office equipment, housing equipment, sensors, security systems, general industrial equipment, and audio equipment. Their peripheral functions are described as the same, with the principal group difference being the presence or absence of data flash ROM. This distinction is important when selecting a replacement because software assumptions about data-flash storage may not transfer directly between groups.
For battery-powered or energy-constrained designs, engineers should evaluate the 3 V to 5 V operating range alongside actual quiescent current, active current, and peripheral configuration, because those values are not stated in the supplied source records. Supply decoupling, programming-tool compatibility, and firmware driver support should likewise be confirmed against the complete manufacturer documentation before a new design is released.
This page combines the verified Renesas and distributor data with package-aware alternatives, application guidance, and design cautions. It also separates confirmed characteristics from parameters that require datasheet confirmation, helping engineers make sourcing decisions without confusing a similarly described R8C member with a qualified drop-in replacement.
直接替換替代品，適用於 R5F21182SP#U0 — 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。
此系列的變體
與下列產品可直接替換的同系列型號： R5F21182SP#U0 （相同外形與佔位） — 差異在於 Device Type, Package.
R5F21183SP#U0
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →R5F21184SP#U0
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
R5F21182DSP#U0
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
R5F21183DSP#U0
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
R5F21184DSP#U0
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
R5F21182SP#U0 最大額定值與電氣特性
| Manufacturer | Renesas Electronics |
| Device Type | 16-bit microcontroller (MCU) |
| CPU Core | R8C core |
| Series | R8C/18 |
| 最大時脈頻率 | 20 MHz |
| Flash Memory | 8 KB |
| Flash Organization | 8K x 8 |
| Operating Voltage | 3 V to 5 V |
| 封裝 | 20-LSSOP |
| 安裝類型 | Surface mount |
| Lead-Free Status | Pb-free |
R5F21182SP#U0 20-lssop 腳位配置指南
R5F21182SP#U0（20-lssop 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： R5F21182SP#U0.
請參閱 資料表 以查看完整腳位配置。
典型應用
R5F21182SP#U0 適用於 6 應用s: Household Appliance Control, Sensor and Condition Monitoring, Security and Access-Control Equipment, General Industrial Control Module, Office and Housing Equipment, Audio Equipment Control and Supervision.
Household Appliance Control
The R5F21182SP#U0 fits compact appliance-control boards where the application must combine user inputs, motors, relays, and sensors within a small flash budget. Its 16-bit R8C core runs at up to 20 MHz, while the verified 8 KB program memory is sufficient for focused control firmware rather than a large operating system or elaborate user interface. The 3 V to 5 V operating range supports common controller rails, and the 20-LSSOP package simplifies dense two-sided layouts. Before release, confirm timer channels, PWM outputs, analog inputs, and standby-current requirements in the group datasheet.
推薦
Sensor and Condition Monitoring
The R5F21182SP#U0 can serve as the local controller for a multi-sensor node that periodically samples inputs, evaluates thresholds, and drives indicators or communications circuitry. Its 20 MHz R8C core provides deterministic execution for the control loop, and the 8 KB flash budget favors compact, event-driven firmware over feature-rich embedded Linux. Operating from a 3 V to 5 V rail simplifies integration with battery-derived and regulated sensor assemblies. The design must account for the ADC, comparator, and wake-up resources actually assigned to the selected configuration, none of which are quantified in the supplied listings.
推薦
Security and Access-Control Equipment
The R5F21182SP#U0 is appropriate for compact access-control, alarm, or interlock modules that coordinate sensors, key inputs, indicators, and actuator drive signals. The 16-bit architecture and 20 MHz clock support responsive control loops, while the 8 KB flash capacity keeps simple standalone nodes economical. A 3 V to 5 V operating range is compatible with common low-voltage security equipment, and the 20-LSSOP package helps limit board size. Firmware should include safe-state actuator handling and communication fault recovery because watchdog, timeout, and security-feature details require confirmation from the complete manufacturer documentation.
推薦
General Industrial Control Module
The R5F21182SP#U0 can be used in a small industrial control module that sequences relays, reads discrete sensors, monitors a power rail, and communicates with a higher-level controller. Its 20 MHz maximum clock supports time-critical peripheral servicing, and the 16-bit R8C core is appropriate for control-oriented firmware with modest memory demand. The 3 V to 5 V range and 20-LSSOP package simplify regulated industrial-board integration, although isolation, surge protection, and environmental qualification must be handled at the system level. Confirm the available timers, serial interfaces, GPIO count, and wide-temperature operation before selecting it for a factory environment.
推薦
Office and Housing Equipment
The R5F21182SP#U0 aligns with Renesas positioning for office and housing equipment that need economical embedded logic rather than high-end processing. Typical functions include keypad scanning, display indication, actuator timing, and supervisory communication. The verified 8 KB flash capacity favors concise control software, and the 20 MHz R8C core can service time-based tasks without a large system-on-module. The 20-LSSOP package reduces PCB footprint, while the 3 V to 5 V range supports common equipment rails. Product-specific qualification should verify brownout behavior, standby consumption, and any required data retention before the controller is approved.
推薦
Audio Equipment Control and Supervision
The R5F21182SP#U0 can manage control-panel tasks in compact audio equipment, including button decoding, status indication, relay control, and communication with a digital audio processor. Renesas lists audio equipment among the R8C/18 application areas, and the 20 MHz core provides sufficient sequential control performance without monopolizing application-memory resources. The 8 KB flash limit favors a separation between control firmware and the audio processing function, while the 20-LSSOP package supports space-constrained boards. Confirm the assigned PWM, timer, and serial resources and verify ground-return strategy if the device shares a chassis with analog audio circuitry.
推薦
推薦產品摘要
工程參考資料，適用於 R5F21182SP#U0 — 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 | R5F21183SP#U0 | R5F21184SP#U0 | R5F21182DSP#U0 | R5F21183DSP#U0 | R5F21184DSP#U0 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP |
| CPU Core | R8C/1x/18 | R8C/1x/18 | R8C/1x/18 | R8C/1x/18 | R8C/1x/18 | R8C/1x/18 |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
主要差異化特點
- Twice the flash memory of the closest lower-density exact family member (對比R5F21181SP#U0)
- Exact verified 20 MHz operating-frequency class (對比R5F21183SP#U0)
- Compact 20-LSSOP implementation with a broad 3 V to 5 V rail range (對比R5F21184SP#U0)
設計說明
Do not treat every R8C/18-family member as an automatic software-compatible substitution. The R5F21181SP#U0 has only 4 KB of flash versus 8 KB for the R5F21182SP#U0, a 50% reduction, while the R8C/18 and R8C/19 groups differ in data-flash ROM availability. Check the linked-build output, RAM and stack usage, peripheral option pins, driver configuration, and any application use of data-flash storage before approving a substitution.
The verified 3 V to 5 V operating range permits use of common regulated rails, but rail tolerance, brownout behavior, and active or sleep current must be taken from the complete datasheet. Place the required bypass capacitor at the supply pins, keep the regulator loop compact, and avoid routing switching-node current through the controller ground. For battery applications, estimate average current from wake interval, active duration, peripheral duty cycle, and measured sleep current rather than using the CPU clock alone.
Use the 20-LSSOP land pattern from the Renesas package drawing and confirm whether the suffix denotes a standard or thin-pitch SSOP footprint. Route crystal or clock signals, programming-interface lines, and reset away from switching regulators and relay drivers. Keep decoupling at the supply pins and provide a clean return path to the device ground. Because the supplied records do not include the pin table, assign every net only after cross-checking the package drawing and datasheet pin-assignment table.
合規資訊
Mouser and DigiKey snippets identify the device as Pb-free. Explicit RoHS, REACH, halogen-free, conflict-minerals, and AEC-Q100 statements were not present in the supplied records, so those values remain unknown. The R5F21182SP#U0 should not be assumed AEC-Q100 qualified for automotive use.
