R5F21143SP#U0 - 16-Bit 20MHz MCU | Renesas Electronics
Артикул: R5F21143SP#U0 ✗ Снят с производстваR5F21143SP#U0 Обзор
An R8C microcontroller is a single-chip embedded controller combining a processor core, flash program memory, data memory, timers, serial interfaces, and I/O resources. The R8C/1x/14 family belongs to the broader Renesas M16C and R8C/Tiny lineage of 16-bit microcomputers. Its CISC-style instruction architecture provides compact code execution for embedded products, while the 20 MHz operating rate supports responsive control of peripherals and communication tasks.
The target device provides 12 KB of flash memory and a maximum clock frequency of 20 MHz. These characteristics make it suitable for compact consumer products, industrial controllers, instrument subsystems, and legacy equipment in which a modest code-memory budget and low pin count are more important than a large application-specific peripheral set. The manufacturer describes the family as using a high-performance silicon-gate CMOS process and an R8C/Tiny Series CPU core.
The R5F21143SP#U0 is offered in a 20-pin plastic molded LSSOP package, which supports compact PCB construction while exposing the microcontroller's principal ports and control signals. Its operating supply range is 3 V to 5 V according to distributor product information, allowing integration into conventional embedded-control rails. Exact RAM, peripheral, timing, and electrical-limit details should be confirmed against the manufacturer datasheet before schematic capture or firmware qualification.
Typical applications include small appliance controllers, sensor-conditioning systems, industrial automation modules, programmable control panels, and communication-enabled embedded products. Because this MCU belongs to a non-promotion family, it is most appropriate for maintaining an established design rather than starting a new platform when a currently promoted Renesas MCU family can satisfy the requirements.
Engineers should preserve the established R8C/1x/14 board layout, clock configuration, memory map, and development-tool workflow when replacing an existing component. Review the pin-description table and electrical characteristics in the manufacturer datasheet before assigning I/O, selecting bypass capacitors, or changing the 3 V or 5 V supply configuration.
This page consolidates the exact orderable MPN, core operating parameters, package identity, application guidance, lifecycle considerations, and same-family replacement options into an engineering-focused reference for legacy R8C/1x/14 designs.
Аналоги без доработки для R5F21143SP#U0 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с R5F21143SP#U0 (тот же форм-фактор и посадочное место) — отличается по Package, Process Technology, Product Type, CPU Core, Flash Memory.
R5F21142SP#U0
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →R5F21141SP#U0
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
R5F21144SP#U0
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →R5F211B1XXXSP#U0
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
R5F21284SDXXXSP#U0
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
R5F21143SP#U0 Максимальные параметры и электрические характеристики
| Product Type | 16-bit R8C microcontroller |
| Series | R8C/1x/14 (Non Promotion) |
| CPU Core | R8C/Tiny Series |
| Word Length | 16 bit |
| Максимальная тактовая частота | 20 MHz |
| Flash Memory | 12 KB |
| Flash Organization | 12K x 8 |
| Рабочее напряжение питания | 3 V to 5 V |
| Корпус | 20-pin LSSOP |
| Package Type | Plastic molded LSSOP |
| Тип монтажа | Surface mount |
| Process Technology | Silicon-gate CMOS |
| Program Memory Type | Flash |
| Lead-Free Status | Pb-free |
Руководство по цоколевке R5F21143SP#U0 в корпусе plastic molded lssop
Цоколевка для R5F21143SP#U0 (корпус plastic molded lssop). Эта цифровая ИС включает выводы GPIO, интерфейсы связи (UART, SPI, I2C) и выводы питания. Обратитесь к техническому описанию производителя для альтернативных функций выводов и вариантов конфигурации. Необходимо для проектирования встраиваемых систем и трассировки печатных плат.
Нет подробных данных о распиновке для R5F21143SP#U0.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
R5F21143SP#U0 подходит для 6 применениеs: Small appliance control, Industrial sensor conditioning, Programmable instrument controller, Communication equipment module, Building and access control, Legacy consumer product controller.
Small appliance control
The R5F21143SP#U0 suits compact appliance controllers that use a 16-bit processor, a 20 MHz clock, and up to 12 KB of flash for operating logic. Its 20-pin LSSOP package reduces board area, while the R8C/Tiny Series core provides efficient execution for control sequences and peripheral coordination. A legacy product can benefit from predictable timing and a familiar firmware environment. Confirm that the required timers, serial channels, I/O count, and analog functions exist in the exact R5F21143 configuration before assigning every appliance function.
Рекомендуется
Industrial sensor conditioning
The R5F21143SP#U0 can act as the supervisory controller in a sensor-conditioning module that gathers switch or sensor inputs, executes control logic, and coordinates an external data interface. Its 16-bit R8C core and 20 MHz operating frequency support responsive multitasking, while 12 KB of flash accommodates embedded firmware rather than a general-purpose operating system. The 20-LSSOP footprint suits densely populated industrial cards. Validate the available I/O, serial-interface options, and electrical limits against the manufacturer datasheet before assigning field-bus or sensor signals.
Рекомендуется
Programmable instrument controller
For legacy measurement instruments, the R5F21143SP#U0 can manage front-panel commands, status indicators, measurement sequencing, and communication between an operator interface and analog front-end hardware. A 20 MHz 16-bit core provides useful processing headroom without a larger package, and the 12 KB flash capacity is appropriate for tightly structured control firmware. Its 3 V or 5 V operation also integrates with established instrument rails. Confirm timer resolution, serial channels, and interrupt assignments in the datasheet so control-loop timing remains deterministic.
Рекомендуется
Communication equipment module
The R5F21143SP#U0 is appropriate for a compact communication module that supervises a serial transceiver, manages buffering, monitors link status, and executes protocol housekeeping. The 16-bit R8C architecture and 20 MHz clock can handle interrupt-driven communication work, while 12 KB of flash is suitable for protocol and control firmware rather than heavy payload storage. The 20-pin LSSOP package supports compact module construction. Verify the exact UART or other serial-interface configuration and pin multiplexing before finalizing the board layout.
Рекомендуется
Building and access control
The R5F21143SP#U0 can serve as the controller for a legacy access-control terminal handling key inputs, relay commands, status LEDs, and local communication. Its compact 20-LSSOP package is useful in door-control hardware, and the 16-bit processor provides straightforward control logic for credential state, lock timing, and event handling. The 12 KB flash limit suits focused firmware rather than large local data logs. Check available I/O and serial functions, and confirm that security and lifecycle requirements are acceptable for the intended non-promotion family.
Рекомендуется
Legacy consumer product controller
For an established consumer product, the R5F21143SP#U0 can retain proven behavior while providing a compact controller for user inputs, status indicators, motors, and timing functions. The 20 MHz maximum operating frequency and 16-bit R8C core allow responsive product logic within a 12 KB firmware budget. Its 3 V to 5 V supply compatibility supports many mixed-signal designs, while the 20-LSSOP package fits space-constrained boards. Renesas positions this family for existing adopters, so use the promoted RL78/G12 Group instead for a genuinely new platform.
Рекомендуется
Справочные инженерные данные для R5F21143SP#U0 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | R5F21142SP#U0 | R5F21141SP#U0 | R5F21144SP#U0 | R5F211B1XXXSP#U0 | R5F21284SDXXXSP#U0 |
|---|---|---|---|---|---|---|
| Package | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Flash Memory | 12 KB | 8 KB | 4 KB | 16 KB | Configured by XXX code | Configured by SD and XXX codes |
Ключевые отличия
- Balanced 12 KB flash configuration within the R8C/1x/14 family (против R5F21142SP#U0)
- Additional program-memory headroom versus the target (против R5F21144SP#U0)
- Simplest fixed-memory selection within the same package family (против R5F211B1XXXSP#U0)
Заметки по проектированию
Do not treat every 20-LSSOP R8C device as an automatic substitute. The flash code, suffix, operating-voltage range, peripheral set, and pin multiplexing can differ even when the footprint is identical. For R5F21143SP#U0 substitutions, compare the complete manufacturer pin-description table, verify that the existing firmware image fits the alternative's program memory, and confirm the toolchain and interrupt configuration remain unchanged.
Preserve the original R8C/1x/14 land pattern when maintaining a board populated with the R5F21143SP#U0. Confirm pin 1 orientation, exposed-pad or lead requirements, and soldering-profile details against the package drawing. Place decoupling capacitors close to the supply pins and route sensitive clock and reset signals away from high-current switching nodes. A same-package replacement still requires assembly and layout review.
Design the 3 V or 5 V supply path for the exact peripheral and I/O loading of the assembled design. Review maximum operating current, input-voltage limits, and startup behavior in the manufacturer electrical-characteristics tables. Use adequately rated bulk and local bypass capacitance, and ensure the regulator can meet the MCU's dynamic current demand without excessive droop. Avoid assuming that a low switching frequency guarantees low average supply noise.
Follow the manufacturer's clock, reset, and decoupling recommendations exactly when reproducing or modifying the legacy design. Keep the oscillator loop compact, provide a clean reset path, and separate analog or sensor inputs from switching-node current. Because this is a non-promotion family, maintain a controlled PCB and firmware configuration and avoid last-minute peripheral changes that cannot be fully qualified within the product's remaining lifecycle window.
Информация о соответствии
Mouser product information identifies the device as Pb-free. RoHS, REACH, halogen-free, and conflict-minerals status require confirmation from Renesas.
