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Renesas R5F21236DFP#U0
- Part No.:
- R5F21236DFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21236DFP#U0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,009
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Product details
Overview
R5F21236DFP from Renesas Electronics is a 16-bit R8C/23 Group microcontroller with integrated CAN 2.0B interface, 32 KB program flash, 2 KB RAM, and dual 1 KB data flash blocks - designed for automotive and industrial networking applications requiring robust real-time control and in-vehicle bus communication.
For engineers reviewing the R5F21236DFP datasheet, R5F21236DFP pinout, R5F21236DFP application, or R5F21236DFP equivalent, this MCU delivers deterministic timing via its 89-instruction R8C CPU core, supports 20 MHz operation at 3.0–5.5 V, integrates 12-channel 10-bit ADC and hardware LIN, and targets systems where CAN-based node control, on-chip data retention, and -40°C to +85°C ambient operation are essential.
Technical Context
The R5F21236DFP implements the R8C CPU core with 1 Mbyte address space, executing instructions in as little as 50 ns at 20 MHz. Its memory architecture separates 32 KB program ROM (04000h–0BFFFh) from two 1 KB data flash blocks (02400h–02BFFh), enabling independent firmware updates and parameter storage without erasing application code.
Peripheral integration includes one CAN 2.0B module (16 message slots), hardware LIN (using Timer RA and UART0), dual UARTs, I²C bus interface, 16-bit Timer RD with input capture/output compare, and 12 analog inputs routed to a single 10-bit A/D converter - all managed through dedicated SFRs in the 00000h–002FFh and 01300h–0147Fh address ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 fundamental instructions and 50 ns min. instruction time at 20 MHz |
| Memory | 32 KB program flash (ROM), 2 KB RAM, and two 1 KB data flash blocks for nonvolatile parameter storage |
| CAN Interface | Single CAN 2.0B-compliant controller with 16 message buffers and full protocol handling |
| Analog Input | 12-channel 10-bit A/D converter with internal reference support via VREF pin |
| Operating Voltage | 3.0 V to 5.5 V supply range, supporting direct connection to automotive 5 V rails |
| Temperature Range | -40°C to +85°C ambient operating range (D version) |
| Package | 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm, 0.5 mm pitch |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog input / GPIO | 12-channel A/D converter inputs (AN0–AN7) and general-purpose CMOS I/O with programmable pull-up |
| P1_0–P1_7 | GPIO / KI / UART / INT | Key interrupt inputs (KI0–KI3), UART0 I/O (TXD0/RXD0), and external interrupt sources (INT1) |
| P2_0–P2_7 | Timer RD I/O | 8-bit bidirectional ports for Timer RD input capture and output compare functions (TRDIOA0–TRDIOD1) |
| P3_0, P3_1 | Timer RA/B outputs | TRAO (Timer RA output) and TRBO (Timer RB output) for PWM or timing signal generation |
| P3_3–P3_5, P3_7 | I²C / SSI / CAN | SDA/SCL (I²C), SSI/SSCK/SCS/SSO (clock-synchronous serial), and CTX0/CRX0 (CAN TX/RX) |
| P4_2 | VREF input | Analog reference voltage input for A/D converter calibration and precision measurement |
| P4_6/P4_7 | XIN/XOUT | Crystal/resonator connections for main system clock generation (XIN input, XOUT output) |
| RESET | Active-low reset | Asynchronous reset input requiring low pulse ≥100 ns for reliable initialization |
Key Features
| Feature | Design Value |
|---|---|
| Dual data flash blocks | Two independent 1 KB data flash areas enable safe field updates of calibration data or configuration parameters without affecting program ROM |
| Integrated CAN 2.0B | Hardware CAN controller with 16 message slots, automatic retransmission, and error confinement - eliminates need for external CAN transceiver logic |
| Hardware LIN support | Single-channel LIN 2.x compliant interface implemented using Timer RA and UART0, reducing software overhead for automotive sub-networks |
| 12-channel 10-bit ADC | Simultaneous sampling not supported, but configurable trigger sources (timer, software, external) allow precise sensor acquisition timing |
| On-chip oscillators | High-speed and low-speed on-chip oscillators with frequency adjustment capability - enables clock source redundancy and reduced BOM count |
Applications
| Automotive Body Control Module | Industrial CAN Gateway |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Primary CAN node managing local actuator drivers and communicating with higher-layer ECUs via CAN 2.0B. Use Value: On-chip data flash stores user preferences and fault logs; hardware LIN interfaces with seat/mirror ICs; 12-channel ADC monitors switch states and potentiometer positions. |
Use Scenario: Protocol translation between CANopen field devices and Modbus TCP supervisory systems in factory automation. IC Role / Device Role / Timing Role: Real-time bridge MCU handling CAN frame parsing, data mapping, and Ethernet packet assembly. Use Value: Dual data flash blocks retain device mapping tables and network configuration; 20 MHz CPU ensures deterministic latency under 100 µs per CAN-to-Modbus conversion cycle. |
| Smart HVAC Controller | Off-Highway Vehicle Monitor |
Use Scenario: Embedded climate control unit regulating blower speed, valve position, and temperature setpoints in commercial HVAC systems. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating thermistor, humidity, and airflow data while driving motor drivers via PWM outputs. Use Value: 10-bit ADC resolves ±0.5°C temperature changes; CAN interface reports status to building management system; -40°C to +85°C rating supports attic-mounted installations. |
Use Scenario: Diagnostic and telemetry node in agricultural or construction machinery monitoring engine RPM, hydraulic pressure, and coolant temperature. IC Role / Device Role / Timing Role: Ruggedized CAN endpoint collecting analog sensor data and transmitting alerts over J1939-compatible bus. Use Value: Data flash retains service interval counters and fault history across power cycles; high-voltage tolerant I/O handles noisy 24 V vehicle electrical systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21236JFP | Identical memory, peripherals, and pinout; rated for same -40°C to +85°C range but uses J-version qualification flow | No functional difference in automotive or industrial use; J version may have alternate traceability or lot documentation | Select when sourcing requires J-version compliance documentation or legacy design continuity |
| R5F21226DFP | Omits dual 1 KB data flash; otherwise identical CPU, CAN, ADC, and package; shares same 32 KB program ROM size | Suitable where parameter storage is handled externally or via EEPROM; lower cost where data flash is unnecessary | Choose when firmware update persistence is not required and BOM cost optimization is prioritized |
Compared with R5F21236JFP, the R5F21236DFP offers identical functionality with D-version qualification; compared with R5F21226DFP, it adds on-chip data flash for secure, wear-levelled parameter storage - critical for automotive diagnostics and calibration retention without external components.
Availability
R5F21236DFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN gateways, smart HVAC controllers, and off-highway vehicle monitoring systems requiring stable component supply across extended product lifecycles.
Supply support for R5F21236DFP 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/23 Group, including the R5F21236DFP, was engineered for cost-sensitive, real-time automotive and industrial control applications demanding CAN connectivity, on-chip data retention, and extended temperature operation without external memory.
FAQ
What is the maximum operating frequency of the R5F21236DFP?
The R5F21236DFP operates at up to 20 MHz when supplied with 3.0–5.5 V, achieving a minimum instruction execution time of 50 ns. This frequency is supported by either an external crystal/resonator on XIN/XOUT pins or the internal high-speed oscillator with frequency adjustment capability - both validated across the full -40°C to +85°C operating range.
Does the R5F21236DFP include a hardware CAN controller?
Yes, the R5F21236DFP integrates a fully compliant CAN 2.0B controller with 16 message buffers, automatic retransmission, and error confinement logic. It supports standard and extended frames and connects directly to a physical CAN transceiver via CTX0 (output) and CRX0 (input) pins - no external CAN protocol logic is required.
How much data flash memory does the R5F21236DFP provide?
The R5F21236DFP provides two independent 1 KB data flash blocks (total 2 KB), located at memory addresses 02400h–027FFh and 02800h–02BFFh. These blocks support 10,000 write/erase cycles and operate within the same 2.7–5.5 V supply range as program flash - enabling reliable storage of calibration data, configuration settings, or event logs.
What package type is used for the R5F21236DFP?
The R5F21236DFP is housed in a 48-pin plastic LQFP package designated PLQP0048KB-A: 7 mm × 7 mm body, 0.5 mm pin pitch, exposed pad not included. This RoHS-compliant package supports standard reflow soldering profiles and is mechanically identical to other R8C/22 and R8C/23 Group MCUs in the same pin count.
Is the R5F21236DFP qualified for automotive applications?
Yes, the R5F21236DFP is a D-version part rated for -40°C to +85°C ambient operation and belongs to Renesas' "Standard" quality grade - explicitly approved for automotive applications including body electronics, chassis subsystems, and infotainment interfaces per Renesas documentation REJ03B0097-0200.
R5F21236DFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/23
- Packaging:
- Tray
- 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:
- 2K x 8
- 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:
R5F21236DFP#U0 FAQ
1.How can I place an order for R5F21236DFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21236DFP#U0 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 R5F21236DFP#U0 reliable?
The price and inventory of R5F21236DFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21236DFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21236DFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21236DFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21236DFP#U0?
R5F21236DFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21236DFP#U0 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 R5F21236DFP#U0?
For technical support, including R5F21236DFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21236DFP#U0 requirements.
6.How does Aetrix verify that R5F21236DFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21236DFP#U0 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 R5F21236DFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21236DFP#U0?
All R5F21236DFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21236DFP#U0, 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 R5F21236DFP#U0 part is unused and in its original packaging.
Return procedure for R5F21236DFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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