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Renesas R5F21226KFP#U1
- Part No.:
- R5F21226KFP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21226KFP#U1.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,139
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Product details
Overview
R5F21226KFP 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 operating at up to 20 MHz (50 ns min instruction time). It integrates a CAN 2.0B module (16-slot), LIN hardware interface, 10-bit 12-channel ADC, UARTs, timers, and I²C, targeting automotive and industrial FA networking applications.
For engineers reviewing the R5F21226KFP datasheet, R5F21226KFP pinout, R5F21226KFP application, or R5F21226KFP equivalent, key selection criteria include its -40°C to +125°C extended temperature rating (K version), 48-pin LQFP package (PLQP0048KB-A), CAN/LIN dual-protocol support, and absence of embedded data flash-distinguishing it from R8C/23 Group variants.
Technical Context
The R5F21226KFP implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte unified address space. Its peripheral set includes Timer RA/RB (8-bit), Timer RD (16-bit × 2 channels with input capture/output compare), Timer RE (compare match), and dual UARTs-one paired with Timer RA for hardware LIN.
It supports CAN 2.0B with 16 message slots and integrated arbitration logic, operates across VCC = 3.0–5.5 V at 20 MHz, and features on-chip oscillators (high-speed with frequency adjustment, low-speed), XIN/XOUT crystal interface, and voltage detection with power-on reset-all within a single-chip configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions and 50 ns min execution time at 20 MHz |
| Memory | 32 KB flash program ROM + 2 KB RAM; no embedded data flash (R8C/22 Group) |
| Operating Temp | -40°C to +125°C (K version); qualified for automotive and industrial environments |
| CAN Interface | Single CAN 2.0B controller with 16 message slots and full protocol handling |
| ADC | 10-bit successive approximation A/D converter with 12 analog input channels |
| Package | 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm, 0.5 mm pitch |
| Supply Voltage | 3.0–5.5 V at 20 MHz; supports high-noise automotive power rails |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog Input / GPIO | 12-channel ADC inputs (AN0–AN7) and general-purpose I/O with programmable pull-up |
| P1_0–P1_7 | GPIO / UART / INT | Includes RXD0/TXD0 (UART0), INT1, CLK0, and KI0–KI3 key interrupt inputs |
| P2_0–P2_7 | Timer RD I/O | 8-bit bidirectional ports for Timer RD input capture/output compare functions |
| P3_0, P3_1, P3_3–P3_7 | I²C / SSI / CAN / GPIO | SDA/SCL (I²C), SSI/SCS/SSCK/SSO (serial I/O), CTX0/CRX0 (CAN transceiver pins) |
| P4_2, P4_3, P4_4, P4_5, P4_6, P4_7 | VREF / GPIO / XIN / RESET / MODE | VREF sets ADC reference; XIN/XOUT for external clock; RESET active-low; MODE tied to VCC |
| P6_0–P6_7 | TREO / UART1 / INT / GPIO | TREO outputs divided clock; TXD1/RXD1 for UART1; INT2/INT3 interrupt inputs |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via Timer RA + UART0-no software bit-banging required |
| CAN 2.0B Controller | Dedicated CAN peripheral with 16 message buffers, automatic retransmission, and error handling |
| On-Chip Oscillators | High-speed oscillator with frequency adjustment + low-speed oscillator-enables clock redundancy |
| Interrupt Architecture | 24 total sources (14 internal, 6 external, 4 software) with 7 priority levels for deterministic real-time response |
| Emulator Debug Support | Dedicated debug area (20000h–23FFFh) reserved for Renesas E8/E10 emulator use |
Applications
| Automotive Body Control | Industrial Fieldbus Node |
|---|---|
Use Scenario: Central body control unit managing door locks, lighting, wipers, and HVAC in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave protocols for sensors/actuators and CAN master for gateway communication. Use Value: Single-chip integration of LIN+CAN eliminates external protocol translators and reduces BOM count. | Use Scenario: Distributed I/O module in factory automation systems communicating over CANopen networks. IC Role / Device Role / Timing Role: Real-time controller handling analog sensor acquisition (12-channel ADC), digital I/O, and CAN messaging. Use Value: Extended -40°C to +125°C operation ensures reliability in uncontrolled industrial enclosures. |
| Motor Drive Interface | Smart Sensor Hub |
Use Scenario: Brushless DC motor control board requiring position feedback, current sensing, and field-oriented control. IC Role / Device Role / Timing Role: Timing-critical controller using Timer RD for PWM generation and ADC sampling synchronization. Use Value: 50 ns instruction timing enables precise 20 kHz PWM carrier generation with minimal jitter. | Use Scenario: Multi-sensor environmental monitoring node aggregating temperature, humidity, and pressure data. IC Role / Device Role / Timing Role: Data concentrator interfacing I²C sensors, performing local preprocessing, and transmitting via CAN. Use Value: Integrated I²C bus interface and 12-channel ADC reduce external component count and PCB footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21236KFP | Same R8C/22 pinout and peripherals, but adds 2 KB data flash (1 KB × 2 blocks) | Enables EEPROM-like parameter storage without external memory | Select R5F21236KFP if non-volatile data logging or field firmware updates are required |
| R5F21226JFP | Identical functionality and memory, but rated for -40°C to +85°C only | Suitable for under-hood applications with lower thermal stress or cabin-mounted modules | Choose R5F21226JFP for cost-sensitive designs where extended temperature range is unnecessary |
Compared with R5F21226KFP, R5F21236KFP adds data flash for runtime parameter storage but shares identical CAN/LIN/ADC capabilities, while R5F21226JFP offers identical performance at reduced temperature grade-making R5F21226KFP optimal for thermally demanding automotive engine bay or industrial motor control deployments.
Availability
R5F21226KFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus nodes, motor drive interfaces, and smart sensor hubs requiring stable component supply across extended temperature ranges.
Supply support for R5F21226KFP 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.
The R8C/22 Group-including R5F21226KFP-is designed for cost-effective, real-time embedded control in automotive and industrial applications where CAN/LIN coexistence, extended temperature operation, and integrated analog peripherals are essential.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for the R5F21226KFP?
The R5F21226KFP operates at up to 20 MHz with a supply voltage range of 3.0 V to 5.5 V. At this frequency, minimum instruction execution time is 50 ns. It also supports 10 MHz operation down to 2.7 V, enabling flexible power/performance trade-offs in battery-powered or low-voltage industrial systems. The K version's extended temperature rating applies across this full voltage range.
Does the R5F21226KFP include embedded data flash memory?
No, the R5F21226KFP does not include embedded data flash memory. It belongs to the R8C/22 Group, which provides only program flash ROM (32 KB) and SRAM (2 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/23 Group, such as the R5F21236KFP. This distinction is critical for applications requiring non-volatile parameter storage without external EEPROM.
Which communication interfaces are hardware-accelerated on the R5F21226KFP?
The R5F21226KFP features hardware-accelerated CAN 2.0B (1 channel, 16 slots), LIN (1 channel via Timer RA + UART0), I²C bus (1 channel), and two UARTs (UART0 and UART1). All are implemented in dedicated peripheral blocks-not bit-banged-ensuring deterministic timing, low CPU overhead, and robust noise immunity in electrically noisy automotive and industrial environments.
What is the ADC resolution, channel count, and reference configuration for the R5F21226KFP?
The R5F21226KFP integrates a 10-bit successive approximation A/D converter with 12 analog input channels (AN0–AN11). Reference voltage is selectable between AVCC or an external source applied to the VREF pin (P4_2), allowing flexible precision scaling for sensor signal conditioning. Conversion time is fixed per specification and independent of CPU load due to dedicated hardware control.
How is the R5F21226KFP's extended temperature rating (-40°C to +125°C) validated and applied?
The R5F21226KFP's K version rating is validated per Renesas' quality grade classification for "Standard" applications, explicitly approved for automotive and industrial use cases including engine control modules, motor drives, and factory automation equipment. Electrical parameters-including CAN timing, ADC accuracy, and flash endurance-are guaranteed across the full -40°C to +125°C range, with no derating required for thermal design.
R5F21226KFP#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/22
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21226KFP#U1 FAQ
1.How can I place an order for R5F21226KFP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21226KFP#U1 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 R5F21226KFP#U1 reliable?
The price and inventory of R5F21226KFP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21226KFP#U1 is usually 5 days.
3.What payment methods are accepted for R5F21226KFP#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21226KFP#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21226KFP#U1?
R5F21226KFP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21226KFP#U1 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 R5F21226KFP#U1?
For technical support, including R5F21226KFP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21226KFP#U1 requirements.
6.How does Aetrix verify that R5F21226KFP#U1 is sourced from the original manufacturer or authorized distributors?
All R5F21226KFP#U1 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 R5F21226KFP#U1 meets industry standards.
7.What is the process for return or replacement of R5F21226KFP#U1?
All R5F21226KFP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21226KFP#U1, 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 R5F21226KFP#U1 part is unused and in its original packaging.
Return procedure for R5F21226KFP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21226KFP#U1 Tags
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