R5F21236KFP - 16-Bit 16MHz R8C/23 MCU, 32KB Flash | Renesas
MPN: R5F21236KFP ✗ Cuối đờiR5F21236KFP Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (typically flash), data memory (RAM), and a rich set of peripherals on a single die. The R8C/Tiny core used here belongs to the 16-bit microcontroller family, positioned between 8-bit MCUs (e.g., RL78, PIC16) and 32-bit microcontrollers (e.g., RX, ARM Cortex-M) in the Renesas product hierarchy. Its CISC-style instruction set and 1MB address space make it suitable for compact, deterministic embedded code in cost-sensitive applications.
Key features of the R5F21236KFP include 32KB flash program memory, a 16-bit CPU with high instruction efficiency, on-chip peripherals typical of the R8C/23 group such as timers, serial interfaces, A/D converter, and interrupt controller, plus 1MB linear address space for executing instructions. The 48-pin LQFP package exposes a generous number of GPIO and peripheral pins while keeping board footprint modest. Automotive-grade Pb-free construction supports deployment in commercial vehicle environments.
Technically, the device is built on a high-performance silicon-gate CMOS process. The 16MHz maximum operating frequency, when paired with the R8C CPU core, gives instruction throughput that is well matched to consumer, industrial, and white-goods control tasks. The combination of 32KB flash and 2KB SRAM allows medium-complexity firmware with reasonable data buffering. AEC-Q100-equivalent automotive temperature range and Pb-free finish extend applicability to harsh thermal environments.
Typical applications include home appliances such as washing machines and microwave ovens, HVAC control, white goods and small-motor drive control, automotive body and accessory ECUs (within the part's automotive-grade classification), industrial sensor interfaces, and consumer-device keypad and LED matrix controllers. The R8C/23 group's mature software ecosystem and low BOM cost make it a common choice for high-volume, cost-driven products.
When designing with this MCU, note that R8C/23 is a non-promotion group, meaning Renesas only supports existing adopters. New designs should consider RL78 or RX families for long-term support, but the part remains pin-compatible with other R8C/2x variants for legacy board reuse. Verify supply availability with distributors before committing new production.
Bộ thay thế dễ dàng lắp đặt cho R5F21236KFP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với R5F21236KFP (cùng hình factor và footprint) — khác nhau ở Package, Program Memory (Flash).
R5F21237KFP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
R5F21226JFP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
R5F21234KFP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
R5F21238KFP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F46K22-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →R5F21236KFP Tỷ lệ tối đa & tính chất điện
| CPU Core | R8C/Tiny (R8C/2x series) |
| Architecture | 16-bit CISC |
| Tần số xung maksimum | 16 MHz |
| Program Memory (Flash) | 32 KB |
| Data Memory (SRAM) | 2 KB |
| Address Space | 1 MB linear |
| Điện áp cung cấp | 3 V / 5 V |
| Khoảng nhiệt độ hoạt động | -40C to +125C |
| Hộp | 48-pin LQFP (7x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Process Technology | High-performance silicon-gate CMOS |
| Pb-Free | Yes (AU PbFree) |
| Peripherals (typical for R8C/23) | Timers, Serial I/F, A/D converter, Interrupt controller |
Cấu hình chân R5F21236KFP
| Chân 1 | VREF — A/D converter reference voltage |
| Chân 2 | AVSS — Analog ground |
| Chân 3 | P4_7/AN7 — GPIO / analog input 1 |
| Chân 4 | P4_6/AN6 — GPIO / analog input 2 |
| Chân 5 | P4_5/AN5 — GPIO / analog input 3 |
| Chân 6 | P4_4/AN4 — GPIO / analog input 4 |
| Chân 7 | P4_3/AN3 — GPIO / analog input 5 |
| Chân 8 | P4_2/AN2 — GPIO / analog input 6 |
| Chân 9 | P4_1/AN1 — GPIO / analog input 7 |
| Chân 10 | P4_0/AN0 — GPIO / analog input 8 |
| Chân 11 | P3_7 — GPIO |
| Chân 12 | P3_6 — GPIO |
| Chân 13 | P3_5 — GPIO |
| Chân 14 | P3_4 — GPIO |
| Chân 15 | P3_3 — GPIO |
| Chân 16 | P3_2 — GPIO |
| Chân 17 | P3_1 — GPIO |
| Chân 18 | P3_0 — GPIO |
| Chân 19 | MODE — Mode select |
| Chân 20 | RESET — Reset input |
| Chân 21 | XOUT — Crystal oscillator output |
| Chân 22 | XIN — Crystal oscillator input |
| Chân 23 | VSS — Digital ground |
| Chân 24 | VCC — Digital supply voltage |
| Chân 25 | P1_7 — GPIO |
| Chân 26 | P1_6 — GPIO |
| Chân 27 | P1_5 — GPIO |
| Chân 28 | P1_4 — GPIO |
| Chân 29 | P1_3 — GPIO |
| Chân 30 | P1_2 — GPIO |
| Chân 31 | P1_1 — GPIO |
| Chân 32 | P1_0 — GPIO |
| Chân 33 | P0_7 — GPIO |
| Chân 34 | P0_6 — GPIO |
| Chân 35 | P0_5 — GPIO |
| Chân 36 | P0_4 — GPIO |
| Chân 37 | P0_3 — GPIO |
| Chân 38 | P0_2 — GPIO |
| Chân 39 | P0_1 — GPIO |
| Chân 40 | P0_0 — GPIO |
| Chân 41 | P6_7 — GPIO |
| Chân 42 | P6_6 — GPIO |
| Chân 43 | P6_5 — GPIO |
| Chân 44 | P6_4 — GPIO |
| Chân 45 | P6_3 — GPIO |
| Chân 46 | P6_2 — GPIO |
| Chân 47 | P6_1 — GPIO |
| Chân 48 | P6_0 — GPIO |
Ứng dụng tiêu biểu
R5F21236KFP phù hợp cho 6 Áp dụngs: Home Appliance Control (Washing Machine / Microwave), HVAC Fan and Damper Control, White-Goods Sensor Interface, Small-Motor BLDC/PMSM Control, Automotive Body and Accessory ECU, Industrial Sensor Transmitter.
Home Appliance Control (Washing Machine / Microwave)
The R5F21236KFP's 16-bit R8C core at 16MHz with 32KB flash and 2KB SRAM is well matched to washing machine and microwave-oven controllers, where deterministic firmware governs motor timing, sensor sampling, and user-interface states. The 48-pin LQFP exposes enough GPIO for keypad scanning, LED or LCD matrix drive, and triac-based load switching. The 3V/5V supply tolerance simplifies integration into existing appliance power designs, and the -40C to +125C temperature range supports under-cabinet and laundry-room thermal stress.
Được đề xuất
HVAC Fan and Damper Control
HVAC indoor-unit controllers require a small, reliable MCU with A/D conversion for temperature sensing and PWM for fan-speed control. The R5F21236KFP's R8C core runs the control loop at 16MHz with deterministic interrupt response, while its 2KB SRAM buffers sensor history. The 48-pin LQFP footprint accommodates multiple PWM outputs, UART links to indoor communication buses, and analog inputs for NTC thermistors. AEC-Q100-aligned temperature grading supports attic and outdoor-unit environments.
Được đề xuất
White-Goods Sensor Interface
White-goods boards such as dishwasher water-level detectors and refrigerator door-state sensors benefit from the R5F21236KFP's compact 32KB flash, integrated A/D converter, and interrupt-driven GPIO. The R8C core's high instruction efficiency simplifies the implementation of debounced inputs, water-level ramp algorithms, and EEPROM-emulation routines. The Pb-free LQFP-48 package withstands the humid, condensing environments of laundry and refrigeration applications.
Được đề xuất
Small-Motor BLDC/PMSM Control
Small brushless DC and permanent-magnet synchronous motor controllers in appliances and power tools use the R5F21236KFP to schedule commutation, read Hall sensors, and drive gate-driver signals. The 16MHz R8C core delivers sufficient throughput for sensorless zero-cross detection algorithms in fan applications, while 32KB flash stores calibration tables and fault logs. The 48-pin LQFP provides dedicated PWM outputs and ADC channels needed for current sensing and back-EMF measurement.
Được đề xuất
Automotive Body and Accessory ECU
Within its automotive-grade Pb-free rating and -40C to +125C range, the R5F21236KFP fits body controllers for seat adjusters, mirror modules, ambient lighting, and HVAC blend-door actuators. The R8C core's deterministic interrupt latency supports LIN slave stacks, while 32KB flash holds vector tables, diagnostics, and calibration. The 48-pin LQFP exposes LIN, PWM, and ADC resources required for sensor-rich body modules.
Được đề xuất
Industrial Sensor Transmitter
Low-power industrial sensor transmitters for pressure, flow, and level measurement rely on the R5F21236KFP's small footprint, integrated A/D, and 3V/5V supply tolerance to interface with 4-20 mA loops or HART modems. The 32KB flash supports calibration curves and digital filtering, while 2KB SRAM holds moving-average buffers. The LQFP-48 package provides sufficient GPIO for loop-powered displays and isolated serial ports.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho R5F21236KFP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | R5F21237KFP | R5F21226JFP | R5F21234KFP | R5F21238KFP | PIC18F46K22-I/PT |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Microchip Technology |
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) | 44-TQFP |
| CPU Core | R8C/Tiny 16-bit | R8C/Tiny 16-bit | R8C/Tiny 16-bit | R8C/Tiny 16-bit | R8C/Tiny 16-bit | PIC18 8-bit |
| Maximum Clock | 16 MHz | 16 MHz | 20 MHz | 16 MHz | 16 MHz | 64 MHz |
| Program Flash | 32 KB | 48 KB | 24 KB | 16 KB | 64 KB | 64 KB |
| SRAM | 2 KB | 4 KB | 1.5 KB | 1 KB | 4 KB | 3.8 KB |
| Supply Voltage | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V | 1.8 V - 5.5 V |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Bảo phân biệt quan trọng
- R8C/23 group with 32KB flash at 16MHz (vsR5F21226JFP (R8C/22 group))
- Pin-compatible flash upgrade path within R8C/23 (vsR5F21234KFP (16KB flash variant))
- Mature automotive Pb-free qualification (vsPIC18F46K22-I/PT (8-bit PIC))
Ghi chú thiết kế
Power the R5F21236KFP from a stable 3.3V or 5V rail with a 100nF decoupling capacitor within 5mm of the VCC pin and a 10uF bulk capacitor on the supply. The R8C core draws modest current during flash programming, so the LDO headroom and transient response must support programming-mode peaks. Add a reverse-polarity protection diode if the board is exposed to field-service swaps.
Route the XIN/XOUT traces as short, symmetric differential pair to minimize crystal overdrive and EMI. Keep analog AVSS and digital VSS separated to a single star-ground tie under the package. Avoid routing high-current switching traces (relays, triacs) parallel to analog input lines (AN0-AN7) to preserve A/D accuracy.
Verify that your firmware does not exceed 32KB flash budget; consider the R5F21237KFP (48KB) or R5F21238KFP (64KB) drop-in variants if growth is expected. Watch the MODE pin configuration at reset - incorrect mode entry can lock the device. Confirm that A/D reference voltage on VREF is decoupled with 1uF + 100nF to AVSS for full-scale accuracy across temperature.
Thông tin tuân thủ
Pb-free (AU PbFree) construction per Mouser listing. AEC-Q100 grade not stated in distributor data - verified data required for automotive qualification claims.
