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Renesas R5F21226JFP#W4
- Part No.:
- R5F21226JFP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21226JFP#W4.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,160
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Product details
Overview
R5F21226JFP from Renesas Electronics is a 16-bit R8C/22 Group microcontroller built on silicon gate CMOS technology, featuring an R8C CPU core, 32 KB flash program memory, 2 KB RAM, and integrated CAN 2.0B interface with 16 message slots - designed for automotive and factory automation networking applications requiring deterministic real-time communication.
For engineers reviewing the R5F21226JFP datasheet, R5F21226JFP pinout, R5F21226JFP application, or R5F21226JFP equivalent, this MCU delivers verified CAN bus support, 10-bit 12-channel ADC, UART/LIN/I²C peripherals, and operation across -40°C to +85°C in a 48-pin LQFP package - enabling robust embedded control in vehicle ECUs and industrial nodes.
Technical Context
The R5F21226JFP implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V), supporting single-chip operation with 1 Mbyte unified address space. Its peripheral set includes Timer RA/RB (8-bit), Timer RD (16-bit ×2 with input capture/output compare), and Timer RE with compare match.
It integrates UART0 (with LIN hardware support via Timer RA), UART1, clock-synchronous serial I/O, dual I²C interfaces, 10-bit A/D converter (12 channels), on-chip high-speed/low-speed oscillators with frequency adjustment, and voltage detection with power-on reset - all managed through dedicated SFRs mapped to 00000h–002FFh and 01300h–0147Fh.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions; enables compact, efficient C-compiled firmware for resource-constrained automotive nodes. |
| Flash Memory | 32 KB program ROM; sufficient for bootloader + application code in mid-complexity ECU designs without external storage. |
| RAM | 2 KB internal RAM; supports stack, heap, and real-time data buffers for CAN message handling and sensor processing. |
| CAN Interface | 1× CAN 2.0B module with 16 message slots; provides hardware message filtering and FIFO-like buffering for deterministic bus arbitration. |
| A/D Converter | 10-bit resolution, 12 input channels; suitable for analog sensor monitoring (e.g., temperature, pressure) with configurable sampling timing. |
| Operating Voltage | 3.0–5.5 V supply range; compatible with standard 5 V automotive and industrial power rails without level-shifting. |
| Temperature Range | -40°C to +85°C (J version); qualified for under-hood and control cabinet environments per Renesas Standard grade. |
| Package | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch); surface-mount compatible with automated PCB assembly and thermal management. |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC (Pin 11) | Power supply input / Analog reference supply | Primary 3.0–5.5 V digital supply; AVCC must be decoupled to AVSS for stable 10-bit ADC performance. |
| VSS / AVSS (Pin 9) | Ground / Analog ground | Digital and analog ground planes should be connected at single point near MCU to minimize noise coupling into ADC. |
| RESET (Pin 7) | Active-low reset input | External pull-up required; assertion resets CPU, peripherals, and registers - critical for safe startup and fault recovery. |
| XIN / XOUT (Pins 10 / 8) | Clock oscillator input/output | Supports ceramic resonator or crystal (1–20 MHz); XOUT is output-only; external clock may be applied to XIN only. |
| CTX0 / CRX0 (Pins 43 / 42) | CAN transmit output / CAN receive input | Direct connection to CAN transceiver (e.g., SN65HVD230); requires 120 Ω termination at network ends. |
| AN0–AN11 (Pins 36–30, 24, 44–47) | Analog input channels | 12 dedicated pins for 10-bit ADC; internal multiplexer allows sequential or triggered sampling without software overhead. |
| RXD0 / TXD0 (Pins 22 / 23) | UART0 serial data in/out | Hardware LIN physical layer support via UART0 + Timer RA; enables slave node implementation in automotive body networks. |
| INT0–INT3 (Pins 25, 41, 26, 27) | External interrupt inputs | Four dedicated edge-triggered inputs; INT0 maps to Timer RD, enabling precise event capture (e.g., encoder pulses). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Module | Hardware message RAM with 16 slots, acceptance filtering, and automatic retransmission - reduces CPU load during high-bandwidth bus traffic. |
| Hardware LIN Support | UART0 + Timer RA co-implementation enables full LIN 2.x slave functionality without firmware bit-banging, improving timing accuracy and reliability. |
| On-Chip Oscillators | High-speed (1–20 MHz adjustable) and low-speed (10–50 kHz) RC oscillators eliminate need for external crystals in cost-sensitive applications. |
| 10-Bit 12-Channel ADC | Configurable sample-and-hold timing, trigger sources (timer/external), and result alignment - simplifies sensor interface design across multiple domains. |
| Multiple Serial Interfaces | UART0/UART1, I²C (2 channels), clock-synchronous serial I/O with chip select - supports mixed-protocol communication (e.g., CAN backbone + I²C sensors). |
| Watchdog Timer | 15-bit programmable watchdog with prescaler and reset/start selectable mode - ensures fail-safe recovery in unattended industrial systems. |
Applications
| Automotive Body Control Unit | Industrial CAN Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave protocols for peripherals and CAN master for gateway communication. Use Value: Integrated LIN+CAN eliminates external protocol translators; 32 KB flash accommodates multi-function firmware with diagnostics and calibration support. |
Use Scenario: Distributed I/O module collecting sensor data (temperature, pressure, flow) and actuating valves/motors in factory automation lines. IC Role / Device Role / Timing Role: Real-time CAN endpoint with deterministic message scheduling and hardware timestamping via Timer RD. Use Value: 12-channel ADC enables direct analog sensor interfacing; 2 KB RAM supports cyclic data buffering and CAN Tx/Rx queue management. |
| Smart HVAC Controller | Motor Drive Monitor |
Use Scenario: Embedded controller managing fan speed, damper position, and ambient air quality in commercial building HVAC systems. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating thermistor, humidity, and CO₂ readings via ADC and I²C, then reporting over CAN. Use Value: Dual I²C interfaces allow concurrent communication with multiple environmental sensors; UART1 supports service port debugging. |
Use Scenario: Monitoring phase current, temperature, and fault status in BLDC motor drives for robotics or CNC equipment. IC Role / Device Role / Timing Role: Safety-critical monitor using voltage detection, watchdog timer, and fast ADC sampling synchronized to PWM cycles. Use Value: On-chip voltage detection and POR ensure reliable boot under fluctuating 12 V supply; 50 ns instruction time enables sub-10 µs control loop response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21226KFP | Same core, memory, and peripherals; rated for -40°C to +125°C operating range (K version vs. J version). | Suitable for under-hood engine control modules where ambient temperature exceeds 85°C. | Select when extended temperature qualification is required; otherwise, R5F21226JFP offers identical functionality at lower cost. |
| R5F21236JFP | Identical package and pinout; adds 2 KB data flash (1 KB × 2 blocks) for EEPROM-like parameter storage. | Preferred for applications requiring field-updatable calibration tables or configuration data retention across power cycles. | Choose R5F21236JFP if nonvolatile parameter storage is needed; R5F21226JFP lacks data flash but retains full CAN/peripheral compatibility. |
Compared with R5F21226KFP and R5F21236JFP, the R5F21226JFP provides optimal balance of CAN-enabled control, industrial temperature rating, and cost efficiency for body electronics and distributed I/O - without over-specifying for extreme thermal or data logging requirements.
Availability
R5F21226JFP is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN nodes, smart HVAC controllers, and motor drive monitors requiring stable component supply and long-term production continuity.
Supply support for R5F21226JFP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for automotive and industrial markets.
The R5F21226JFP belongs to the R8C/22 Group - a family of 16-bit MCUs engineered for cost-sensitive, real-time embedded control in automotive networking and factory automation, emphasizing CAN integration, low-power operation, and robust peripheral sets.
FAQ
What is the maximum operating frequency supported by the R5F21226JFP?
The R5F21226JFP supports a maximum external crystal or resonator frequency of 20 MHz at VCC = 3.0–5.5 V, delivering a minimum instruction execution time of 50 ns. Its on-chip high-speed oscillator is adjustable within 1–20 MHz, allowing flexible clock source selection without external components.
Does the R5F21226JFP include data flash memory?
No, the R5F21226JFP does not include data flash memory. It is part of the R8C/22 Group, which features only program flash (32 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/23 Group, such as the R5F21236JFP - a pin-compatible alternative if nonvolatile parameter storage is required.
Which pins on the R5F21226JFP support CAN bus communication?
The R5F21226JFP uses Pin 43 (CTX0) as the CAN transmit output and Pin 42 (CRX0) as the CAN receive input. These pins connect directly to an external CAN transceiver (e.g., TJA1042 or SN65HVD230) and require proper termination and ESD protection per ISO 11898-2.
Can the R5F21226JFP operate without an external crystal?
Yes, the R5F21226JFP can operate using its on-chip high-speed RC oscillator, adjustable from 1–20 MHz, eliminating the need for an external crystal or resonator. This reduces BOM cost and board space, though external timing sources provide higher accuracy for CAN bit timing compliance.
What is the purpose of the MODE pin on the R5F21226JFP?
The MODE pin (Pin 4) on the R5F21226JFP must be externally pulled high to VCC via a resistor to configure the MCU for normal single-chip operation. Leaving it floating or pulling low may cause undefined behavior or failure to initialize correctly during power-up.
R5F21226JFP#W4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/22
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21226JFP#W4 FAQ
1.How can I place an order for R5F21226JFP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21226JFP#W4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R5F21226JFP#W4 reliable?
The price and inventory of R5F21226JFP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21226JFP#W4 is usually 5 days.
3.What payment methods are accepted for R5F21226JFP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21226JFP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21226JFP#W4?
R5F21226JFP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21226JFP#W4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R5F21226JFP#W4?
For technical support, including R5F21226JFP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21226JFP#W4 requirements.
6.How does Aetrix verify that R5F21226JFP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F21226JFP#W4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F21226JFP#W4 meets industry standards.
7.What is the process for return or replacement of R5F21226JFP#W4?
All R5F21226JFP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21226JFP#W4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R5F21226JFP#W4 part is unused and in its original packaging.
Return procedure for R5F21226JFP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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