R5F211B4NP#U0 - 16-Bit 20MHz R8C MCU | Renesas
料号： R5F211B4NP#U0 ✗ 停产R5F211B4NP#U0 概述
A microcontroller is a programmable semiconductor that integrates a CPU core, flash memory, RAM, timers, serial interfaces, analog peripherals, and general-purpose I/O into one device. The R8C family belongs to Renesas' 16-bit microcontroller portfolio and uses the R8C/Tiny architecture. This device is designed for embedded products requiring deterministic control, low-power operation, and a compact surface-mount footprint.
The R5F211B4NP#U0 provides 16 KB of flash memory for firmware and 20 MHz operating speed for control-loop processing. Its 28-HWQFN package limits board area to 5 x 5 mm while exposing a thermal pad for heat spreading. The manufacturer identifies this orderable variant as non-promotion and recommends the RL78/G12 group for new designs, making lifecycle confirmation especially important for production planning.
The R8C/Tiny CPU core is designed for instruction-efficient control applications. Program memory retains the firmware image, while on-chip RAM supports working variables, stack operations, and peripheral data handling. Depending on the exact board configuration, the device can support external sensing and actuation through its I/O, timer, and communication resources, reducing the need for separate interface components.
Typical uses include compact industrial controllers, instrumentation, motor-control support circuits, consumer-device control modules, and low-power embedded systems. The small QFN-style package is particularly useful where PCB area is constrained and where a land pattern compatible with a 28-lead QFN layout can be implemented. Programming and firmware development require the appropriate Renesas R8C toolchain and a compatible programming interface.
For a new PCB, verify the complete pin description, exposed-pad connection, programming interface, clock configuration, and peripheral mapping in the manufacturer datasheet before committing the layout. Confirm the recommended operating voltage and temperature limits for the exact suffix. Because the manufacturer marks this variant as non-promotion, use the Request a Quote form on this page to confirm availability, lifecycle status, and suitable alternatives for production.
This product page organizes the verified R8C/1B identity, 16-bit CPU architecture, 20 MHz performance, 16 KB flash memory, package information, lifecycle position, and replacement considerations into one engineering reference. It also distinguishes verified device attributes from details that still require confirmation from the exact-ordering datasheet, helping engineers assess fit before schematic capture or PCB release.
直接替换替代料： R5F211B4NP#U0 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： R5F211B4NP#U0 （相同外形与封装尺寸） ——差异在于 Package, Program Memory Size, Watchdog Timer.
该产品暂无直接替换替代料。
请求替代料R5F211B4NP#U0 最大额定值与电气特性
| Product Type | 16-bit R8C/Tiny-series microcontroller |
| CPU Architecture | 16-bit R8C/Tiny-series CPU core |
| Maximum CPU Frequency | 20 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB (16K x 8) |
| 封装 | 28-HWQFN (5 x 5 mm) |
| 安装类型 | Surface mount |
| Package Pin Count | 28 pins |
| Exposed Thermal Pad | Yes, HWQFN package |
| Watchdog Timer | Present |
| Lifecycle Recommendation | RL78/G12 group recommended for new designs |
| RoHS 状态 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
R5F211B4NP#U0 28 pins 引脚配置指南
R5F211B4NP#U0（28 pins 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： R5F211B4NP#U0.
请参阅 数据手册 以查看完整引脚配置。
典型应用
R5F211B4NP#U0 适用于 6 应用s: Compact Industrial Control Module, Instrumentation and Data Acquisition, Low-Power Embedded Controller, Motor and Relay Control, Consumer Device Control, Battery-Powered Sensor Node.
Compact Industrial Control Module
The R5F211B4NP#U0 fits compact industrial control modules that require a 16-bit CPU, 20 MHz operating speed, and 16 KB of flash memory while keeping the footprint limited to a 28-HWQFN 5 x 5 mm package. The device can coordinate sensor inputs, timers, digital control outputs, and communications within a densely populated control board. Its watchdog-timer support improves recovery after faults, while the exposed pad provides a route for heat spreading through the PCB. Before schematic release, confirm the exact I/O count, peripheral assignment, supply limits, and pin multiplexing in the manufacturer datasheet.
Instrumentation and Data Acquisition
The R5F211B4NP#U0 is suitable for compact instrumentation modules that sample switches or sensors and perform local control or measurement calculations. Its 16-bit R8C/Tiny-series architecture and 20 MHz maximum operating frequency provide a practical balance between processing capability and compactness, while 16 KB of flash stores application firmware and configuration logic. The 28-HWQFN package can conserve PCB area in multi-channel measurement equipment. Verify ADC availability, timer channels, serial interfaces, RAM capacity, and analog signal limits before assigning the MCU to an acquisition circuit.
Low-Power Embedded Controller
The R5F211B4NP#U0 can serve as the controller in a low-power embedded product that performs periodic measurement, state-machine execution, and actuator updates. Its R8C/Tiny-series core supports efficient 16-bit control operations, and the 20 MHz operating capability provides headroom for responsive task scheduling. A compact 28-HWQFN footprint is advantageous in wearables, appliance controls, and compact environmental monitors. Power-budget calculations should use manufacturer active and wait-mode current figures for the exact suffix, and the firmware should use the documented sleep modes to achieve the intended battery life.
Motor and Relay Control
The R5F211B4NP#U0 is appropriate for small motor, solenoid, or relay-control subsystems where a dedicated high-power driver is not required. Timers and general-purpose digital outputs can sequence actuator commands, while the 16-bit CPU supports more elaborate state management than a basic logic device. The 28-HWQFN package helps reduce board area in multi-axis or distributed control assemblies. The MCU should not directly drive loads beyond its specified output ratings; use suitable driver circuitry, protection, and isolation where required. Confirm timer output availability and electrical limits before finalizing the topology.
Consumer Device Control
The R5F211B4NP#U0 can manage local control functions in compact consumer equipment such as appliance subassemblies, interface modules, and accessory controllers. Its 16 KB flash capacity accommodates focused control firmware, and the 20 MHz R8C/Tiny-series core supports responsive control logic, timing, and serial data handling. The small 28-HWQFN 5 x 5 mm package reduces routing congestion when other analog, power, and interface components share the board. Validate the exact peripheral mix, programming process, lifecycle plan, and production support because this orderable variant is designated non-promotion by Renesas.
Battery-Powered Sensor Node
The R5F211B4NP#U0 is well matched to battery-powered sensor nodes that periodically acquire inputs, filter readings, and transmit summarized data. Its 16-bit architecture is useful for signed calculations and control logic, while 16 KB of flash can hold a compact firmware image. The small HWQFN footprint leaves board area for the sensor, power-management circuit, and radio. The key design trade-off is that final battery life depends on the selected operating mode, wake-up strategy, and peripheral activity. Use the exact electrical-characteristics tables to calculate average current and confirm whether the device's sleep modes meet the duty-cycle requirement.
工程参考数据： R5F211B4NP#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 |
|---|---|
| Brand | Renesas Electronics |
| Package | 28-HWQFN (5 x 5 mm) |
| Product Type | 16-bit microcontroller |
| CPU Core | R8C/Tiny-series |
| Maximum CPU Frequency | 20 MHz |
| Program Memory | 16 KB flash (16K x 8) |
| Lifecycle Position | Non-promotion; RL78/G12 recommended for new designs |
关键差异点
- Compact 20 MHz 16-bit control platform （对比 RL78/G12 replacement family)
- Established R8C/Tiny-series CPU architecture （对比 RL78/G12 replacement family)
- Compact exposed-pad package implementation （对比 Larger-package R8C family alternatives)
设计说明
Use the exact Renesas 28-HWQFN land pattern and exposed-pad drawing rather than a generic QFN footprint. Check pad length, pad width, pitch, solder-mask opening, and paste-aperture dimensions against the package drawing. Keep the exposed pad connected as directed in the datasheet, and review its thermal-current path before release. Small drafting or mask differences can cause solder-bridging, voids, or weak thermal performance.
Treat the exposed pad as both a package feature and a PCB thermal path. Place adequate ground and copper beneath the device, while following the manufacturer's guidance on whether the pad must be tied to a specific supply or ground net. Validate the final assembly under the worst expected operating frequency and ambient temperature. The 20 MHz maximum rating identifies capability, not a guaranteed sustained operating point for every thermal design.
Do not substitute a similarly named R5F211B4NP ordering code without checking package, temperature range, and shipment form. Do not assume that the non-promotion designation prevents obsolescence, and do not infer drop-in compatibility from a shared 28-pin count. A valid replacement must preserve the footprint, exposed-pad treatment, supply limits, clock requirements, memory, peripheral functions, and programming requirements.
Build the power budget from the exact suffix's operating-current, wait-current, and leakage characteristics. Include peripheral load, I/O drive current, startup behavior, and the regulator's own quiescent demand. For battery operation, calculate average consumption from the real duty cycle rather than a single active-current figure. Confirm brownout behavior and reset conditions so the firmware and external supply design remain predictable.
合规信息
The manufacturer product page identifies the R5F211B4NP#U0 as non-promotion and recommends RL78/G12 for new designs. No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration was identified for this exact ordering code.
