R5F21194NP#U0 - 16-Bit 20MHz R8C MCU | Renesas Electronics
MPN： R5F21194NP#U0 ✓ 啟用中R5F21194NP#U0 概覽
A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals into one device. The R8C family belongs to the broader embedded-controller hierarchy, combining general-purpose control, serial communication, timers, analog comparison, and watchdog functions. This makes the R5F21194NP#U0 useful when a design needs local control, sensor conditioning, actuator signaling, and communication without relying on a higher-cost application processor.
The R8C CPU core provides 16-bit processing at a maximum clock frequency of 20 MHz. Its 16 KB flash program memory can store firmware for embedded-control tasks, while the integrated four-channel comparator supports threshold detection and low-cost analog supervision. The 28-HWQFN surface-mount package also includes data-flash capability according to the device listing, allowing selected parameters or operational data to be retained in nonvolatile form when supported by the firmware and application requirements.
The device is identified as a non-promotion R8C/1x/19-group microcontroller. Its 3 V to 5 V operating range supports conventional embedded-control rails, while the small 5 mm by 5 mm HWQFN package reduces board area compared with larger leaded-outline packages. The package also demands careful PCB layout because its fine-pitch contacts and exposed thermal construction require compatible land patterns, solder paste design, and thermal-via placement.
Typical applications include industrial sensor interfaces, compact motor and actuator controllers, digital monitoring modules, laboratory equipment, and low-power embedded instruments. It is also appropriate for designs that compare external analog signals, supervise thresholds, and perform control functions in a compact embedded platform.
A key design consideration is firmware and peripheral planning. Before schematic capture, confirm the exact pin assignments, peripheral multiplexing, clock configuration, and programming mode in the manufacturer datasheet. The fine-pitch HWQFN package also requires assembly controls, including inspection of solder joints and sufficient thermal management under sustained processing loads.
This page combines the verified device identity with practical application guidance, engineering design notes, package information, and clearly identified data gaps. It is intended to help engineers evaluate the R5F21194NP#U0 quickly while directing detailed pin, electrical, and programming decisions to the authoritative Renesas documentation.
直接替換替代品，適用於 R5F21194NP#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。
此產品無可直接替換的替代品。
申請替代品R5F21194NP#U0 最大額定值與電氣特性
| Product Type | 16-bit R8C microcontroller |
| CPU Core | R8C |
| Series | R8C/1x/19 |
| CPU Bit Width | 16 bit |
| 最大時脈頻率 | 20 MHz |
| Flash Memory | 16 KB (16K x 8) |
| Comparator Count | 4 channels |
| 工作電源電壓 | 3 V to 5 V |
| Alternative Supply Voltage Range | 2.7 V to 5.5 V |
| 工作溫度範圍 | -20 °C to 85 °C |
| 封裝 | 28-HWQFN (PWQN0028KA-B), 5 mm x 5 mm |
| 安裝類型 | Surface mount |
| Data Flash | Supported |
| Watchdog Timer | Supported |
| Lead-Free Status | Pb-free |
| Program Memory Type | Flash |
| Application Classification | Non-promotion product |
R5F21194NP#U0 28-hwqfn (pwqn0028ka-b), 5 mm x 5 mm 腳位配置指南
R5F21194NP#U0（28-hwqfn (pwqn0028ka-b), 5 mm x 5 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： R5F21194NP#U0.
請參閱 資料表 以查看完整腳位配置。
典型應用
R5F21194NP#U0 適用於 6 應用s: Industrial Sensor Interface, Compact Motor and Actuator Control, Digital Monitoring and Threshold Control, Laboratory Embedded Instruments, Battery-Powered Embedded Modules, Programmable Logic and Peripheral Control.
Industrial Sensor Interface
The Renesas Electronics R5F21194NP#U0 fits compact sensor-hub designs that must compare several analog inputs and perform local control. Its four comparator channels can implement threshold detection for temperature, level, pressure, or industrial-limit signals, while the 16-bit R8C core runs at up to 20 MHz. Use the device within its 3 V to 5 V nominal range and -20 °C to 85 °C temperature range. The 28-HWQFN package conserves board area, although the fine-pitch footprint requires careful land-pattern and assembly planning.
推薦
Compact Motor and Actuator Control
The R5F21194NP#U0 is suitable for low- and medium-duty actuator-control blocks where local logic must evaluate sensor conditions and drive outputs. Its 20 MHz R8C core provides enough instruction throughput for coordinated control loops, while four comparator channels can monitor limits or feedback signals. The 3 V to 5 V operating range aligns with common embedded power systems, and the 5 mm by 5 mm 28-HWQFN package supports compact multi-axis or distributed controller layouts.
推薦
Digital Monitoring and Threshold Control
Use the R5F21194NP#U0 in monitoring modules that compare sensed voltages against configurable limits and report events through embedded serial interfaces. Four integrated comparators reduce the need for discrete threshold channels, while the 16-bit processor core supports filtering, debouncing, state management, and fault logging. Its 16 KB flash memory provides a defined firmware budget for these tasks. The package and supply range suit compact instrumentation, although external protection remains necessary for long cable runs or harsh industrial inputs.
推薦
Laboratory Embedded Instruments
The R5F21194NP#U0 can serve as the control processor in a compact laboratory instrument that coordinates threshold comparison, data acquisition sequencing, and user commands. A 20 MHz R8C core is suitable for deterministic peripheral orchestration, while data-flash capability can support retained configuration or operational records. The 28-HWQFN footprint limits panel-board area, but designers should verify pin multiplexing and programming access in the datasheet before finalizing the control board.
推薦
Battery-Powered Embedded Modules
The R5F21194NP#U0 is appropriate for small battery-powered modules that need local sensing, comparator-based supervision, and modest processing without a large application processor. Its compact 28-HWQFN package supports board miniaturization, and the 3 V to 5 V operating range permits use with common regulated or battery-derived rails. Firmware should use low-power modes, disable unused peripherals, and account for comparator, oscillator, and communication activity in the final energy budget.
推薦
Programmable Logic and Peripheral Control
The R5F21194NP#U0 can act as a supervisory controller in a mixed embedded board where it evaluates comparator inputs, sequences peripheral devices, and manages fault-safe states. Its 20 MHz 16-bit core provides responsive control without requiring a larger FPGA or high-power processor. Sixteen kilobytes of flash must be allocated carefully across boot logic, application firmware, and update features. The dense HWQFN land pattern should be reviewed for assembly yield, inspection access, and adequate copper thermal support.
推薦
推薦產品摘要
工程參考資料，適用於 R5F21194NP#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 |
|---|---|
| Brand | Renesas Electronics |
| Package | 28-HWQFN (PWQN0028KA-B), 5 mm x 5 mm |
| Product Type | 16-bit R8C microcontroller |
| CPU Core | R8C |
| Maximum Clock Frequency | 20 MHz |
| Flash Memory | 16 KB (16K x 8) |
| Comparator Count | 4 channels |
| Nominal Operating Voltage | 3 V to 5 V |
| Operating Temperature Range | -20 °C to 85 °C |
| Data Flash | Supported |
主要差異化特點
- Integrated four-channel comparator capability (對比No verified drop-in alternative is available for comparison)
- Compact 5 mm by 5 mm surface-mount package (對比No verified drop-in alternative is available for comparison)
- Defined low-voltage embedded-control configuration (對比No verified drop-in alternative is available for comparison)
設計說明
Treat the 28-HWQFN as a fine-pitch, thermal-sensitive land pattern rather than a generic QFN footprint. Assign the exact package code PWQN0028KA-B from the manufacturer drawing, including its exposed-pad dimensions and mask-aperture details. Verify pin numbering, terminal pitch, paste volume, and solder mask geometry against the current package specification before releasing artwork.
Design the 3 V to 5 V supply rail with enough local decoupling for the R8C core, comparators, and active peripherals. Follow the manufacturer’s recommended input and output capacitor values, ESR range, and voltage rating rather than selecting capacitors by capacitance alone. Check startup current, analog-reference behavior, and brownout requirements against the specific operating mode used in the design.
Provide a thermal path beneath the exposed package area and populate thermal vias according to the manufacturer land-pattern guidance. The 20 MHz operating rate and enabled peripherals determine actual dissipation, so assess worst-case activity rather than an idle condition. Keep analog and power-loop routing away from exposed thermal structures where copper isolation is required by the package drawing.
Do not assume that every R8C/1x/19-family device has identical pins or peripheral options. The four comparator channels, flash capacity, pin multiplexing, programming mode, and package assignments must be checked in the R5F21194NP datasheet. Confirm that the programming interface, reset behavior, clock sources, and unused pins are terminated according to the device requirements before fabrication.
Separate analog comparator inputs from fast digital clocks and switching outputs to reduce coupling into threshold measurements. Keep the MCU supply path compact and follow the recommended placement of decoupling components. If the board combines sensitive sensing with clocked digital circuitry, establish a practical ground strategy during schematic review rather than relying on a single split-plane decision made after routing.
合規資訊
The product listing identifies R5F21194NP#U0 as Pb-free. RoHS, REACH, AEC-Q100, halogen-free, and conflict-minerals status require confirmation from the manufacturer product documentation.
