R5F21113FP#W4 - 16-Bit 20MHz 12KB Flash MCU | Renesas
부품 번호: R5F21113FP#W4 ✗ 단종R5F21113FP#W4 개요
An R8C microcontroller is a 16-bit embedded-control component within the broader MCU and microprocessor hierarchy. It combines flash-resident firmware, internal data RAM, timers, serial interfaces, and general-purpose I/O in one device. This integration allows compact control systems to replace separate processor, memory, and peripheral components while keeping firmware, board area, and assembly requirements consolidated.
Key features include 12 KB of flash memory organized as 12K by 8 bytes, 768 bytes of RAM, 22 general-purpose I/O lines, and a maximum listed operating frequency of 20 MHz. The internal oscillator reduces the number of external timing components required in many designs. Tray packaging supports volume production and automated PCB assembly when the board geometry and component orientation match the 32-pin LQFP footprint.
The R8C/1x/11 architecture is intended for compact embedded controllers that benefit from 16-bit instruction handling and efficient peripheral integration. The manufacturer describes the R8C/11 family as supported primarily for customers that previously adopted these products and recommends the RL78/G14 family for new designs. Legacy-product support status should therefore be considered when planning a long-lived design.
Typical uses include industrial control modules, compact instrumentation, appliance controllers, embedded interface products, and small automation equipment. The 22 available I/O pins provide connectivity for sensors, indicators, switches, communications links, and discrete actuators, while the 20 MHz operating rate supports time-sensitive control tasks.
PCB planning should follow the manufacturer package drawing and pin-assignment table. Confirm oscillator requirements, supply voltage limits, programming connections, and all peripheral multiplexing before releasing a layout. Because firmware, toolchain, and peripheral behavior are architecture-specific, treat software migration as part of replacement planning rather than assuming electrical similarity alone guarantees interchangeability.
This product page consolidates the device identity, memory organization, package characteristics, sourcing information, and replacement constraints into a design-focused reference. It also distinguishes true drop-in interchangeability from merely similar microcontrollers by requiring the same footprint, pin compatibility, suitable electrical parameters, and compatible firmware behavior.
드롭인 대체품: R5F21113FP#W4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: R5F21113FP#W4 (동일 폼 팩터 및 풋프린트) — 차이점: Product Type.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청R5F21113FP#W4 최대 정격 & 전기적 특성
| Product Type | 16-bit R8C/1x/11 microcontroller |
| CPU Core | R8C/Tiny Series |
| CPU Architecture | 16-bit |
| Maximum Operating Frequency | 20 MHz |
| Program Memory Size | 12 KB (12K x 8) |
| Program Memory Type | Flash |
| RAM Size | 768 x 8 bits (768 bytes) |
| Number of I/O Pins | 22 |
| Oscillator Type | Internal |
| Package Type | 32-pin LQFP |
| Package Dimensions | 7 mm x 7 mm |
| 실장 유형 | Surface mount |
| Packaging | Tray |
| Manufacturing Technology | High-performance silicon gate CMOS |
R5F21113FP#W4 7 mm x 7 mm 핀 구성 가이드
R5F21113FP#W4(7 mm x 7 mm 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: R5F21113FP#W4.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
R5F21113FP#W4 적합 용도: 6 애플리케이션s: Compact Industrial Control Module, Appliance Controller, Embedded Instrumentation, Small Automation Controller, Legacy Equipment Upgrade, Sensor and Switch Interface Hub.
Compact Industrial Control Module
The R5F21113FP#W4 fits compact industrial control modules that coordinate sensors, indicators, switches, and actuators within a limited board area. Its 16-bit R8C/Tiny Series core operates up to 20 MHz, providing useful timing headroom for responsive control tasks, while 22 I/O lines support multiple external signals. The 12 KB flash budget suits a focused control program, and 768 bytes of RAM provides a defined working area. Engineers should confirm operating-temperature limits, supply range, and peripheral requirements before release.
Appliance Controller
The R5F21113FP#W4 is suitable for appliance controllers that manage buttons, displays, relays, sensors, and sequencing logic in one embedded platform. Its 20 MHz maximum operating rate supports time-sensitive control, while the 22 I/O pins can reduce the need for external interface logic. The 12 KB flash capacity is suitable when firmware is limited to a focused appliance function, and the internal oscillator can simplify designs that do not require a high-accuracy external time base. Validate motor, mains, and safety isolation separately.
Embedded Instrumentation
The R5F21113FP#W4 can serve as the controller in small measurement instruments where a display, keypad, sensor interface, and communications function must share one microcontroller. The 16-bit architecture and 20 MHz operating speed support responsive sampling and control, while 22 I/O pins expand board-level connectivity. Its 768 bytes of RAM may be sufficient for compact data buffers but requires careful firmware planning. Confirm the required serial interfaces, timers, analog functions, and timing accuracy against the manufacturer datasheet.
Small Automation Controller
The R5F21113FP#W4 is appropriate for small automation controllers that execute deterministic sequences and interface with external sensors and actuators. Its 16-bit CPU handles the broader address and data operations associated with embedded automation logic, and the 20 MHz rate provides margin for multiple interrupt-driven tasks. Twenty-two I/O lines can connect status inputs and discrete outputs. Because the family is positioned for existing-product support, use lifecycle planning and production-change monitoring when deploying it in new automation equipment.
Legacy Equipment Upgrade
The R5F21113FP#W4 is particularly relevant when maintaining or cloning an existing R8C/11-based controller because its 12 KB flash, 768-byte RAM, 22 I/O pins, 20 MHz speed, and 32-LQFP package establish the baseline for board-level compatibility. An upgrade must still be checked at the pin, peripheral, and software levels rather than relying on memory size alone. Preserve the original clock configuration, programming method, interrupt structure, and package drawing to reduce integration risk.
Sensor and Switch Interface Hub
The R5F21113FP#W4 can coordinate discrete sensors, switches, indicators, and small actuators in a distributed interface hub. Its 22 I/O lines provide the principal connection count, and the 20 MHz operating rate allows interrupt-driven input handling and output timing. The internal oscillator can reduce external component requirements in non-precision systems. Firmware must account for the limited 768-byte RAM and the 12 KB program-memory ceiling, particularly when adding protocol stacks, diagnostics, or field-upgrade functions.
엔지니어링 참조 데이터: R5F21113FP#W4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
설계 노트
Use the manufacturer 32-pin LQFP package drawing as the authority for land pattern, pin-one orientation, courtyard limits, and solder-mask clearance. The package is identified as 7 mm by 7 mm and surface mount. Route programming signals, reset, clock, supply, and ground directly from their assigned pins, and preserve a direct ground path beneath or beside the device where the package drawing permits it.
Determine the regulator from the final operating voltage, clock configuration, and peripheral-load budget rather than from the 20 MHz headline frequency alone. Decoupling must follow the manufacturer datasheet's recommended capacitance, voltage rating, and ESR limits. Check startup current and I/O injection limits before enabling external circuitry, because an undersized supply can cause brownout behavior during reset or peripheral activity.
Do not treat a similar R8C device as a direct replacement without checking every pin function and peripheral mapping. Memory capacity, CPU speed, package size, and I/O count are not enough to establish interchangeability. For an existing design, verify the interrupt vector layout, timer channels, serial interfaces, oscillator pins, programming mode, and active operating grade before approving a substitution or reusing the PCB.
The operating frequency influences dynamic power consumption, but a meaningful thermal estimate requires the actual supply voltage, active duty cycle, enabled peripherals, and package thermal data. Record those operating values before calculating junction rise. Use the manufacturer's recommended PCB land pattern and copper area, and compare the calculated worst-case junction temperature with the device's specified operating-temperature range.
규정 준수 정보
The product information identifies the R5F21113FP family as an R8C/11 microcontroller but does not state compliance or environmental-certification details for the exact ordering code. AEC-Q100 is not applicable because this is a general-purpose microcontroller rather than an automotive-qualified device.
