R5F21182NP#U0 - 16-Bit 20MHz MCU | Renesas Electronics
料号： R5F21182NP#U0 ✓ 量产中R5F21182NP#U0 概述
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, data memory, peripherals, and I/O into one package. The R5F21182NP#U0 belongs to the R8C/1x family of 16-bit single-chip microcomputers. This product hierarchy connects R8C CPU core devices to embedded control solutions in which compact size, deterministic control, and embedded code execution are more important than a high-pin-count host processor architecture.
The primary verified features include a 16-bit R8C CPU core, 20 MHz maximum speed, 8 KB flash memory, 512 bytes of RAM, 13 I/O pins, an internal oscillator, and a 28-HWQFN package. The Mouser listing describes the device as a 3 V/5 V, Pb-free microcontroller, while the Renesas product page identifies it as an R8C/1x member in the Non Promotion category. These details position the part for compact embedded-control designs requiring moderate code capacity and modest external-interface requirements.
The R8C architecture supports embedded applications where firmware-driven sequencing, control, and communication tasks must be handled by a dedicated device. Its 20 MHz operating speed provides greater timing headroom than slower general-purpose 8-bit alternatives, while 8 KB of flash gives firmware designers room for a bootloader, calibration logic, state machines, and application-specific routines. The 512-byte RAM requirement should be evaluated carefully against the working data and stack needs of the final application.
Typical uses include compact industrial controllers, sensor-interface modules, appliance-control boards, small motor-control subsystems, and low-cost embedded instruments. The 5 mm by 5 mm exposed-pad package can support compact board layouts, but thermal performance and exposed-pad soldering become important when the operating frequency, I/O activity, and ambient temperature combine to create sustained self-heating.
Designers should verify the complete pin assignment, power architecture, peripheral mix, clock options, and programming procedure in the Renesas R5F21182NP datasheet before layout release. The verified snippets do not expose the detailed pin map, operating-temperature range, or recommended PCB land pattern, so those items require confirmation rather than inference.
This product page consolidates verified distributor specifications, current purchasing information, same-family replacement candidates, and practical selection guidance into one engineering-oriented reference. It also distinguishes confirmed values from data that remains to be checked in the manufacturer documentation.
直接替换替代料： R5F21182NP#U0 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
R5F21181NP#U0
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
R5F21183NP#U0
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
R5F211A2NP#U0
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →R5F211A4NP#U0
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →R5F211B2NP#U0
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →R5F21182NP#U0 最大额定值与电气特性
| Microcontroller Type | 16-bit R8C/1x microcontroller |
| CPU Core | R8C 16-bit core |
| Maximum Operating Frequency | 20 MHz |
| Program Memory Size | 8 KB (8K x 8) |
| RAM Size | 512 x 8 bits |
| Number of I/O Pins | 13 |
| Supply Voltage Range | 3 V to 5 V |
| Oscillator Type | Internal |
| Architecture | 16-bit CISC |
| Package Type | 28-HWQFN (5 mm x 5 mm) |
| Package Family | HWQFN surface-mount family |
| Exposed Pad | Present |
| 安装类型 | Surface mount |
| Packaging | Tube |
| Lead-Free Status | Pb-free |
R5F21182NP#U0 hwqfn surface-mount family 引脚配置指南
R5F21182NP#U0（hwqfn surface-mount family 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： R5F21182NP#U0.
请参阅 数据手册 以查看完整引脚配置。
典型应用
R5F21182NP#U0 适用于 6 应用s: Compact Industrial Control Module, Appliance Control Board, Sensor Interface and Data Logger, Low-Power Monitoring Device, Communication Interface Controller, Compact Measurement and Control Instrument.
Compact Industrial Control Module
R5F21182NP#U0 fits compact industrial control modules that require deterministic embedded logic without the overhead of a high-end processor. Its 16-bit R8C CPU core operates up to 20 MHz, while 8 KB of flash stores the control state machine, input processing, and output sequencing. The 13 I/O pins can support discrete sensors, status indicators, and actuator-control signals when their multifunction assignments match the board requirements. Operating from 3 V to 5 V simplifies integration with industrial 3.3 V logic, although the final module must verify the device's operating-temperature and qualification limits. The exposed-pad HWQFN also requires careful PCB layout and thermal review.
推荐
Appliance Control Board
The R5F21182NP#U0 is appropriate for appliance-control boards where a dedicated controller manages operating modes, button inputs, indicators, and small actuators. The 20 MHz R8C core provides useful execution headroom over basic 8-bit designs, while 8 KB of flash is appropriate for compact finite-state-machine firmware. Its 3 V to 5 V operating range supports common appliance rails, and 13 I/O pins reduce the need for external I/O expansion. Designers should allocate RAM carefully for stack depth and temporary working variables. The 5 mm by 5 mm 28-HWQFN package can conserve board area, but the exposed pad must connect to the specified ground plane and follow the manufacturer soldering profile.
推荐
Sensor Interface and Data Logger
R5F21182NP#U0 can serve as the local controller for a small sensor-interface or data-logging module. Its 13 I/O pins are useful for digital sensors, interrupt inputs, and status controls, while the 16-bit R8C core handles sampling orchestration, calibration tables, and data formatting at up to 20 MHz. The 8 KB flash limit favors compact event logs, configuration parameters, and focused application firmware rather than large buffering. Its internal oscillator reduces component count, but precise timing and low-noise analog performance depend on the verified peripheral and clock specifications. Before selecting it for an analog measurement path, confirm the available ADC resources and pin multiplexing in the manufacturer documentation.
推荐
Low-Power Monitoring Device
The R5F21182NP#U0 is a reasonable candidate for battery-powered or low-power monitoring devices where local computation adds value without requiring a high-performance MCU. Its 3 V to 5 V operating range covers common regulated systems, and the 20 MHz maximum clock allows software to execute between measurement events. The internal oscillator can simplify the hardware, while the 13 I/O pins support wake-up inputs, status LEDs, and external sensing lines. Actual battery life depends on the selected operating mode, peripheral activity, and sleep-current figures, none of which are present in the verified records. Those values must be taken from the datasheet before selecting external load switches, regulators, or battery hardware.
推荐
Communication Interface Controller
R5F21182NP#U0 can support a protocol-conversion or communication-helper board when the firmware workload fits within 8 KB of flash and the required serial interface is available on the selected pins. The 16-bit CPU core and 20 MHz operating speed are suitable for frame handling, address decoding, and supervisory logic around dedicated transceivers. Communication bridges such as USB-to-serial or isolated serial links can provide the physical interface while the R8C device manages higher-level device selection and status reporting. Interface voltage, direction, multiplexing, and timing must be verified because the supplied records do not enumerate the MCU's UART, SPI, or other peripheral resources.
推荐
Compact Measurement and Control Instrument
R5F21182NP#U0 is suitable for a compact measurement instrument when its 20 MHz R8C core can perform control-loop calculations while the 13 I/O pins manage digital controls and status functions. The 8 KB flash budget suits a focused firmware image containing acquisition sequencing, calibration, and user-interface logic, while 512 x 8 bits of RAM limits temporary data buffering. Instrument designs should use external converters when higher-resolution or higher-speed analog acquisition is required. The small 28-HWQFN package assists space-constrained layouts, but its exposed pad requires a stable low-impedance ground connection and process-controlled reflow to preserve long-term reliability.
推荐
推荐产品汇总
工程参考数据： R5F21182NP#U0 ——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 | R5F21181NP#U0 | R5F21183NP#U0 | R5F211A2NP#U0 | R5F211A4NP#U0 | R5F211B2NP#U0 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 28-HWQFN (5 mm x 5 mm) | 28-HWQFN (5 mm x 5 mm) - same | 28-HWQFN (5 mm x 5 mm) - same | 28-HWQFN (5 mm x 5 mm) - same | 28-HWQFN (5 mm x 5 mm) - same | 28-HWQFN (5 mm x 5 mm) - same |
| CPU Core | R8C 16-bit core | R8C 16-bit core | R8C 16-bit core | R8C 16-bit core | R8C 16-bit core | R8C 16-bit core |
| Maximum Operating Frequency | 20 MHz | 20 MHz nominal same-family rating | 20 MHz nominal same-family rating | 20 MHz nominal same-family rating | 20 MHz nominal same-family rating | 20 MHz nominal same-family rating |
关键差异点
- Compact 16-bit control with 20 MHz performance （对比 R5F21181NP#U0)
- Documented 8 KB flash allocation （对比 R5F211A2NP#U0)
- Verified 13-pin I/O budget in a 5 mm square package （对比 R5F211B2NP#U0)
设计说明
Use the exact Renesas package drawing and recommended land pattern for the 28-HWQFN rather than substituting a generic 28-pin QFN footprint. The verified package is 5 mm by 5 mm and has an exposed pad, but its pad dimensions, pin pitch, and thermal-via pattern were not supplied. Confirm those details in the manufacturer datasheet. Place input, ground, and decoupling connections directly at the associated pins and provide a low-impedance ground plane beneath the exposed pad to support both electrical return and heat dissipation.
The device is verified for 3 V to 5 V operation, but separate checks are still required for supply tolerance, current consumption, internal core voltage, and I/O behavior at each rail. Decouple the MCU supply at the package pins with the capacitance and ESR range specified by Renesas. Avoid routing noisy switching-regulator outputs directly into the supply pins, and use local bulk capacitance where transient current from enabled peripherals or I/O transitions could disturb the core rail.
The 20 MHz clock and 13 available I/O lines create a practical switching workload, but actual dissipation cannot be calculated from the supplied search excerpts. Use the datasheet operating-current and internal-voltage information to estimate the average and worst-case load, then compare the resulting junction temperature with the package thermal limits. The exposed pad reduces thermal resistance only when it is soldered according to the manufacturer profile and connected to an appropriate ground or thermal plane.
Do not treat a matching 28-HWQFN outline as proof of drop-in interchangeability. Before substituting an R8C/1x candidate, compare every pin name, power domain, alternate-function mapping, programming interface, reset behavior, oscillator circuit, and exposed-pad connection. Firmware written for one memory-density variant may also assume a different flash map or peripheral set. Perform a schematic review, pin table comparison, timing review, and representative bench test before releasing a substitute to production.
合规信息
Mouser explicitly describes the R5F21182NP#U0 as Pb-free. The supplied records do not explicitly state RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 status. AEC-Q100 is marked not_applicable because this is a general-purpose microcontroller and no automotive qualification was verified.
