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Renesas R5F21265SDFP#X6
- Part No.:
- R5F21265SDFP#X6
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21265SDFP#X6.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,960
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Product details
Overview
R5F21265SDFP#X6 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/26 Group, featuring an R8C CPU core, 24 KB on-chip flash ROM, 1.5 KB RAM, and operating across -40°C to +85°C. It integrates UART0/UART1, I²C bus interface, LIN module (hardware), 10-bit 12-channel A/D converter, and four 8-/16-bit timers - deployed in industrial control panels requiring deterministic real-time response and low-power operation.
For engineers reviewing the R5F21265SDFP#X6 datasheet, R5F21265SDFP#X6 pinout, R5F21265SDFP#X6 application, or R5F21265SDFP#X6 equivalent, key selection criteria include its D-version temperature grade (-40°C to +85°C), 32-pin LQFP package (PLQP0032GB-A), 25 I/O pins with LED drive capability, and support for XCIN/XCOUT 32 kHz real-time clock circuitry.
Technical Context
The R5F21265SDFP#X6 implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, VCC = 3.0–5.5 V). Its memory map spans 1 Mbyte address space, with fixed interrupt vector table at 0FFDCh–0FFFFh and SFRs mapped to 00000h–002FFh.
Peripheral integration includes Timer RE with real-time clock functionality (enabled in D version), hardware LIN using Timer RA and UART0, and dual UART channels supporting both asynchronous and clock-synchronous serial I/O - all controlled via dedicated SFRs and interrupt priority levels (7-level nesting).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and register bank switching |
| Flash ROM / RAM | 24 KB program flash + 1.5 KB SRAM - sufficient for firmware with protocol stacks and sensor data buffering |
| Operating Temp. | -40°C to +85°C (D version) - qualified for industrial ambient environments without forced cooling |
| Supply Voltage | 2.2 V to 5.5 V - supports direct connection to 3.3 V or 5 V system rails without level-shifting |
| A/D Converter | 10-bit resolution, 12 input channels - enables simultaneous monitoring of multiple analog sensors (e.g., temp, voltage, current) |
| Timers | Timer RA/RB (8-bit ×2), RC (16-bit), RE (RTC + compare match) - provides PWM generation, input capture, and calendar timekeeping |
| Serial Interfaces | UART0/UART1 + I²C + LIN + clock-sync SIO - supports multi-protocol communication with ECUs, displays, and peripherals |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply input | Core logic supply (2.2–5.5 V); VSS serves as digital ground reference for all I/O and internal circuits |
| AVCC / AVSS | Analog power supply | Dedicated analog domain supply - requires local decoupling to ensure 10-bit A/D accuracy |
| RESET | Reset input | Active-low asynchronous reset - holds MCU in reset until external pull-up stabilizes after power-on |
| XIN / XOUT | Crystal oscillator interface | Supports 20 MHz max crystal/resonator; enables precise timing for UART baud rate generation |
| XCIN / XCOUT | 32 kHz RTC oscillator | Exclusive to D/N versions - drives Timer RE for battery-backed real-time clock operation |
| P0_0–P0_7 | General-purpose I/O | 8-bit port with individual direction control; P0_0–P0_7 serve as A/D inputs AN7–AN0 respectively |
| TXD0 / RXD0 | UART0 data I/O | Full-duplex asynchronous serial interface - used for debug console or host MCU communication |
| SCL / SDA | I²C bus interface | Open-drain bidirectional signals - enable connection to EEPROMs, sensors, and PMICs with standard I²C protocol |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via Timer RA + UART0 - eliminates need for external LIN transceiver in slave-node applications |
| Low-Power Stop Mode | 0.7 µA typical current at 3.0 V - enables battery-powered operation for >1 year with periodic wake-up via INT0 or RTC alarm |
| On-Chip Oscillators | High-speed (adjustable) and low-speed on-chip oscillators - reduce BOM cost and board space vs. external crystals |
| LED Drive Ports | P1_0–P1_7 support direct LED sinking (D/N versions) - simplifies status indicator design without external drivers |
| Interrupt Architecture | 23 total sources (15 internal, 4 external, 4 software) with 7 priority levels - ensures deterministic response to critical events like LIN frame errors or ADC overruns |
Applications
| Industrial Control Panel | Automotive Body Controller |
|---|---|
Use Scenario: Localized I/O management in HVAC control units with temperature sensing, fan speed regulation, and display interface. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop PID control, driving 7-segment display via P1 LED ports, and communicating via LIN to door modules. Use Value: Integrated LIN + 12-channel A/D + RTC enables single-chip implementation without external protocol ICs or timing crystals. |
Use Scenario: Seat position memory and mirror adjustment module in mid-tier passenger vehicles. IC Role / Device Role / Timing Role: LIN slave node collecting potentiometer inputs (AN0–AN3), storing presets in flash, and responding to master commands via UART0 debug channel. Use Value: D-version temperature rating and hardware LIN compliance meet automotive body electronics requirements without derating. |
| Smart Appliance Interface | Energy Monitoring Gateway |
Use Scenario: User interface and sensor hub in smart washing machines with water level, motor current, and detergent dispensing control. IC Role / Device Role / Timing Role: Real-time coordinator between touch panel (P4_5 INT0), motor driver (P0_4 TREO PWM output), and cloud-connected Wi-Fi module (UART1). Use Value: 24 KB flash accommodates bootloader, UI firmware, and OTA update handler; 1.5 KB RAM supports double-buffered sensor logs. |
Use Scenario: DIN-rail mounted submeter aggregating current/voltage readings from CT sensors and reporting via RS-485 gateway. IC Role / Device Role / Timing Role: Precision A/D acquisition engine with synchronous sampling (TRCCLK trigger), timestamping via Timer RE, and UART0-to-RS485 translation. Use Value: 10-bit A/D linearity ±1 LSB and 32 kHz RTC enable accurate energy kWh calculation over extended periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21264SDFP | 16 KB flash, 1 KB RAM - 8 KB less program storage and 512 B less RAM than R5F21265SDFP#X6 | Suitable for simpler control tasks without complex UI or protocol stacks | Select when firmware size is <16 KB and no future feature expansion is planned |
| R5F21275SDFP | R8C/27 Group variant with 1 KB × 2 data flash blocks (10,000 write cycles) - adds nonvolatile parameter storage capability | Required where field-updatable calibration data or user preferences must survive power loss | Choose when EEPROM-like data retention is mandatory and additional flash endurance justifies cost premium |
Compared with R5F21264SDFP and R5F21275SDFP, the R5F21265SDFP#X6 delivers optimal balance of code space (24 KB), RAM (1.5 KB), and industrial temperature range without data flash overhead - making it ideal for cost-sensitive, feature-complete embedded controllers where parameter logging is handled externally.
Availability
R5F21265SDFP#X6 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and smart appliance interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R5F21265SDFP#X6 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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise applications.
The R8C/26 Group, including R5F21265SDFP#X6, was designed for cost-optimized, real-time embedded control in resource-constrained systems - emphasizing low power, integrated peripherals, and industrial-grade reliability.
FAQ
What is the maximum operating frequency of the R5F21265SDFP#X6?
The R5F21265SDFP#X6 achieves a minimum instruction execution time of 50 ns when running at 20 MHz XIN clock frequency with VCC between 3.0 V and 5.5 V. This corresponds to a maximum sustained core clock of 20 MHz, supported by its high-speed on-chip oscillator or external crystal/resonator on XIN/XOUT pins.
Does the R5F21265SDFP#X6 support real-time clock functionality?
Yes, the R5F21265SDFP#X6 supports real-time clock functionality via Timer RE when used in D-version configuration. It uses the XCIN/XCOUT 32 kHz crystal oscillator input to drive calendar timekeeping and alarm interrupts - confirmed in the R8C/26 Group hardware manual for D/N versions.
What are the key differences between R5F21265SDFP#X6 and R5F21275SDFP?
The R5F21265SDFP#X6 belongs to the R8C/26 Group and lacks on-chip data flash, while R5F21275SDFP is an R8C/27 Group part with two 1 KB data flash blocks rated for 10,000 erase/write cycles. Both share identical package, pinout, CPU, and peripheral set except for this nonvolatile data storage capability.
Can the R5F21265SDFP#X6 drive LEDs directly?
Yes, the R5F21265SDFP#X6 supports direct LED driving on P1_0 through P1_7 - eight I/O pins configurable as current-sinking outputs in D and N versions. Each pin can sink up to 20 mA (per Renesas datasheet absolute maximum ratings), enabling multiplexed 7-segment or status LED control without external drivers.
Is the R5F21265SDFP#X6 pin-compatible with other R8C/26 Group MCUs?
Yes, all R8C/26 Group devices in the 32-pin LQFP package (PLQP0032GB-A), including R5F21265SDFP#X6, share identical pin assignments and electrical characteristics. Firmware and PCB layouts are interchangeable across R5F21262/4/5/6 Sx versions - only flash size, RAM size, and temperature grade differ.
R5F21265SDFP#X6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/26
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 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:
R5F21265SDFP#X6 FAQ
1.How can I place an order for R5F21265SDFP#X6 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21265SDFP#X6 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 R5F21265SDFP#X6 reliable?
The price and inventory of R5F21265SDFP#X6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21265SDFP#X6 is usually 5 days.
3.What payment methods are accepted for R5F21265SDFP#X6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21265SDFP#X6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21265SDFP#X6?
R5F21265SDFP#X6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21265SDFP#X6 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 R5F21265SDFP#X6?
For technical support, including R5F21265SDFP#X6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21265SDFP#X6 requirements.
6.How does Aetrix verify that R5F21265SDFP#X6 is sourced from the original manufacturer or authorized distributors?
All R5F21265SDFP#X6 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 R5F21265SDFP#X6 meets industry standards.
7.What is the process for return or replacement of R5F21265SDFP#X6?
All R5F21265SDFP#X6 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21265SDFP#X6, 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 R5F21265SDFP#X6 part is unused and in its original packaging.
Return procedure for R5F21265SDFP#X6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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