R5F21162SP#U0 - 16-Bit 20MHz MCU | Renesas Electronics
料号： R5F21162SP#U0 ✓ 量产中R5F21162SP#U0 概述
A microcontroller is an integrated semiconductor containing a processor core, program memory, data memory, timers, serial interfaces, and I/O circuitry on one package. Within the broader semiconductor hierarchy, the R5F21162SP#U0 belongs to the embedded-processing category and uses the R8C family of 16-bit microcontroller ICs. This integration reduces the component count required for a standalone controller while keeping the design centered on programmable firmware rather than fixed hardware logic.
Three primary characteristics define this device: a 16-bit CPU, a 20 MHz operating frequency, and 8 KB of flash program memory. The 20 MHz clock provides useful processing headroom for responsive control loops and interrupt-driven tasks, while flash retains firmware when power is removed. The package is identified as 20-LSSOP, also marketed as 20-SSOP in distributor listings, and the lead-free marking identifies a Pb-free production configuration.
The R5F21162SP#U0 is positioned for compact embedded systems where a small package, low-voltage operation, and dedicated microcontroller resources are more important than the storage capacity or peripheral scale of a high-end application processor. Its 8 KB flash capacity is best suited to firmware with tightly bounded functionality, such as dedicated appliance controllers, simple sensor nodes, industrial control modules, and compact peripheral interfaces.
Typical design work involves assigning the available digital and analog functions, establishing a stable clock and reset path, and implementing firmware around the R8C core. Brownout monitoring, watchdog behavior, and power-consumption requirements should be evaluated in the final system because operating modes and firmware execution can materially affect the power budget.
The principal layout consideration is the 20-LSSOP footprint, whose closely spaced leads demand careful track routing and reliable solder bridging control. Follow the pin-description and land-pattern tables in the manufacturer datasheet when assigning ports, supply pins, reset, clock, and programming signals. Confirm startup behavior and firmware timing with the configured operating frequency rather than treating the maximum clock rate as an automatic system setting.
This page combines the exact ordering information, package identity, operating-class details, memory configuration, and practical design considerations for engineers evaluating the R5F21162SP#U0 in a new embedded-control design.
直接替换替代料： R5F21162SP#U0 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料R5F21162SP#U0 最大额定值与电气特性
| Microcontroller Family | R8C |
| CPU Architecture | R8C/1x/16 |
| CPU Word Size | 16 bit |
| 最大时钟频率 | 20 MHz |
| Flash Memory | 8 KB (8K x 8) |
| Operating Voltage Class | 3/5 V |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 封装 | 20-LSSOP |
| Alternate Package Description | 20-SSOP |
| Package Type | Surface-mount no-lead |
| Lead-Free Status | Pb-free |
| RoHS 状态 | Compliant |
| Product Category | Microcontroller IC |
| Program Memory Type | Flash |
| Data Memory Organization | 8K x 8 |
R5F21162SP#U0 surface-mount no-lead 引脚配置指南
R5F21162SP#U0（surface-mount no-lead 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： R5F21162SP#U0.
请参阅 数据手册 以查看完整引脚配置。
典型应用
R5F21162SP#U0 适用于 6 应用s: Compact Industrial Control Module, Battery-Powered Sensor Node, Appliance Controller, Communication Interface Module, Data Acquisition Front End, Programmable Logic Controller.
Compact Industrial Control Module
The R5F21162SP#U0 fits compact industrial control modules that coordinate discrete sensors, digital outputs, and a local human interface. Its 16-bit R8C core and 20 MHz maximum clock provide useful response capability for interrupt-driven control tasks, while the 2.7 V to 5.5 V operating range supports common industrial control rails. The 8 KB flash footprint is appropriate when the firmware is narrowly scoped and must execute predictably after power loss. A 20-LSSOP footprint also supports compact board layouts, although thermal and signal-integrity checks remain necessary in high-noise environments.
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Battery-Powered Sensor Node
The R5F21162SP#U0 is suitable for a small battery-powered sensor node when its acquisition, sampling, and communications logic can fit within an 8 KB flash budget. Its 2.7 V minimum operating voltage permits use with regulated low-voltage energy-harvesting and battery-derived rails, while the 20 MHz clock supports responsive foreground and interrupt-driven routines. Power consumption must be controlled through firmware and peripheral states rather than inferred from maximum clock frequency. Battery life should be calculated using the duty cycle and the operating-current values specified in the manufacturer datasheet.
推荐
Appliance Controller
The R5F21162SP#U0 can serve as the dedicated controller in a household or commercial appliance where a single compact device must interpret inputs and sequence outputs. The 16-bit instruction set and 20 MHz maximum operating frequency are useful for responsive state-machine control, while 8 KB of flash provides nonvolatile firmware for a tightly defined feature set. The 20-LSSOP package helps preserve board area in space-constrained products. Designers should reserve pins for motor drivers, safety interlocks, and service interfaces according to the final appliance architecture.
推荐
Communication Interface Module
The R5F21162SP#U0 is appropriate for a protocol-conversion or peripheral-interface module when the design requires a compact, deterministic controller near the connector. Its 20 MHz R8C/1x/16 core can manage framing, status, and buffer-control tasks, while the 20-LSSOP footprint can be placed close to the communications circuitry. The available flash is more suitable for fixed interface firmware than for large protocol stacks. Electrical isolation, level translation, impedance control, and ESD protection should be implemented according to the external interface being supported.
推荐
Data Acquisition Front End
The R5F21162SP#U0 can coordinate a small data-acquisition front end when the system performs local sampling, filtering, and data packaging. The 16-bit CPU provides a straightforward architecture for fixed-point or compact signal-processing routines, and the 20 MHz clock gives margin for interrupt-driven sampling schedules. Eight kilobytes of flash limits the program size, so the firmware should focus on acquisition control rather than extensive storage. Analog front-end filtering, grounding, and separate routing of sensitive signals are needed to prevent converter activity from influencing measurement quality.
推荐
Programmable Logic Controller
The R5F21162SP#U0 is useful in small programmable logic controller or sequencer designs where a microcontroller provides more flexibility than fixed hardware. Its 16-bit R8C core, 20 MHz maximum clock, and 8 KB flash support deterministic event handling, timing, and state-machine logic. The 20-LSSOP package supports compact PLC modules, while the 2.7 V to 5.5 V range accommodates common control voltages. Before selection, verify that the required input count, output drive, isolation, watchdog behavior, and expansion interface fit the device's documented resources.
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推荐产品汇总
工程参考数据： R5F21162SP#U0 ——对比、设计指导和合规信息。
选型指南
关键差异点
- Compact 20 MHz R8C processing in a 20-pin package （对比 R5F21282SDXXXSP#U0)
- Defined 8 KB nonvolatile program memory （对比 R5F21324DNSP#W4)
- Low-voltage compatibility for 3 V and 5 V systems （对比 General 16-bit microcontroller families)
设计说明
Treat the 20-LSSOP footprint as a fine-pitch assembly constraint. Follow the manufacturer land pattern for pad length, width, and toe geometry; do not derive it from the generic body outline alone. Route supply and ground pins directly to their associated bypass capacitors, keep the clock path short, and reserve unobstructed access for programming and test. Review the assembly drawing for paste volume and solder-bridging risk because the 0.5 mm-class lead pitch can be sensitive to profile temperature and land-balance changes.
Design the supply network for the documented 2.7 V to 5.5 V operating range, including tolerance, startup ramp, and the voltage used during programming. Place the regulator output capacitor and any local bypass capacitor next to their associated device pins, with a short ground return. If the rail is shared with switching converters, add filtering based on measured switching-edge noise rather than assuming the MCU supply can tolerate arbitrary ripple. Confirm brownout and reset behavior against the actual power-source impedance.
Do not assume that every 16-bit R8C device is interchangeable with the R5F21162SP#U0. The device is specified with 8 KB of flash, a 20 MHz maximum clock, and a 20-LSSOP package, but related family members may change pin allocation, memory size, serial peripherals, or programming requirements. Before modifying an existing design, compare the manufacturer pin tables, electrical limits, clock system, and application notes. Also avoid treating the 20 MHz figure as a required operating point; firmware timing and power behavior depend on the selected clock configuration.
Keep the oscillator and reset paths away from switching nodes and high-current output traces. If an external clock or sensitive analog input is present, use a controlled return path and avoid routing these signals beneath digital return paths on multilayer boards. Series damping and source termination should be calculated from measured edge rates and trace impedance rather than added indiscriminately. For designs with long external wiring, add the appropriate protection and filtering close to the connector because the MCU pin alone is not an EMC solution.
合规信息
The device is identified as Pb-free and RoHS compliant. AEC-Q100 qualification, REACH status, halogen-free status, and conflict-minerals status were not established by the listed product information.
