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Renesas R5F21275SDFP#X6
- Part No.:
- R5F21275SDFP#X6
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21275SDFP#X6.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,263
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Product details
Overview
R5F21275SDFP#X6 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 24 KB flash program memory, 1.5 KB RAM, and dual 1 KB data flash blocks. It integrates an 89-instruction R8C CPU core, 12-channel 10-bit A/D converter, UART0/UART1 serial interfaces, hardware LIN module, and real-time clock (timer RE). Designed for automotive and industrial control applications requiring nonvolatile parameter storage and low-power operation.
For engineers reviewing the R5F21275SDFP#X6 datasheet, R5F21275SDFP#X6 pinout, R5F21275SDFP#X6 application, or R5F21275SDFP#X6 equivalent, key selection criteria include its -40°C to +85°C operating temperature (D version), 32-pin LQFP package (PLQP0032GB-A), 10,000-cycle data flash endurance, and integrated XCIN/XCOUT 32 kHz crystal interface for RTC accuracy.
Technical Context
The R5F21275SDFP#X6 implements the R8C CPU core with two register banks, 20-bit program counter, and 11-bit flag register supporting interrupt priority levels 0–7. Its memory architecture includes 1 Mbyte address space, fixed interrupt vector table at 0FFDCh–0FFFFh, and on-chip SFRs mapped to 00000h–002FFh.
Peripheral integration centers on timer-driven functions: Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (real-time clock with compare match), and dedicated LIN communication using UART0 and Timer RA. The A/D converter supports simultaneous sampling across 12 analog inputs (AN0–AN11) with internal reference voltage (VREF) support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and register bank switching |
| Flash Memory | 24 KB program ROM + 1 KB × 2 data flash blocks for EEPROM-like parameter storage |
| RAM | 1.5 KB on-chip SRAM for variables, stack, and subroutine execution |
| A/D Converter | 10-bit resolution, 12 input channels (AN0–AN11), internal VREF support |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit I/O capture/compare), Timer RE (RTC + compare match) |
| Serial Interfaces | UART0/UART1 (2 channels), I²C bus interface, clock synchronous serial I/O with chip select, hardware LIN |
| Operating Temperature | -40°C to +85°C (D version), validated for automotive cabin and industrial control environments |
| Supply Voltage | 2.2 V to 5.5 V (supports wide-input power rails including 3.3 V and 5 V systems) |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply input / ground | Core logic supply (2.2–5.5 V); decoupling required per Renesas layout guidelines |
| AVCC / AVSS | Analog power supply | Dedicated analog domain for A/D converter; requires separate capacitor filtering |
| XIN / XOUT | High-frequency clock input/output | Supports 5–20 MHz crystal/resonator for main system clock generation |
| XCIN / XCOUT | 32 kHz RTC clock input/output | Enables precision real-time clock operation; available only in D/N versions |
| RESET | Active-low reset input | Hardware reset assertion; internal pull-up ensures reliable startup without external resistor |
| P0_0–P0_7 | General-purpose I/O ports | 8-bit port with individual direction control; AN0–AN7 multiplexed for A/D inputs |
| P1_0–P1_7 | I/O / LED drive / KI / AN | LED drive capability (D/N versions); KI0–KI3 key interrupt inputs; AN8–AN11 A/D inputs |
| AN0–AN11 | Analog input terminals | 12-channel 10-bit A/D converter inputs; shared with P0/P1 pins; VREF referenced |
| UART0/UART1 | Asynchronous serial I/O | RXD0/TXD0 and RXD1/TXD1 pins support full-duplex communication at configurable baud rates |
| SCL / SDA | I²C bus interface | Open-drain bidirectional lines compliant with standard-mode (100 kbps) I²C protocol |
| TREO | Timer RE output | Real-time clock output signal; used for wake-up, time-stamping, or periodic interrupts |
Key Features
| Feature | Design Value |
|---|---|
| Dual data flash blocks | Two independent 1 KB data flash areas enable wear-leveling and fail-safe parameter updates without halting program execution |
| Hardware LIN module | Integrated LIN 2.0/2.1 compliance via UART0 + Timer RA eliminates external transceiver need in body electronics nodes |
| Low-power stop mode | 0.7 µA typical current draw at 3.0 V enables battery-backed RTC operation for extended sleep periods |
| On-chip oscillators | High-speed (adjustable 1–20 MHz) and low-speed (32 kHz) on-chip oscillators reduce BOM count and improve startup reliability |
| Interrupt priority levels | Seven programmable priority levels (0–7) allow deterministic response to critical events like LIN frame errors or A/D conversion completion |
| XCIN/XCOUT RTC interface | Dedicated 32 kHz crystal oscillator circuit provides ±20 ppm accuracy for automotive-grade timekeeping without external components |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Central body controller managing door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, reading switch inputs, driving LEDs and relays, and logging fault codes to data flash. Use Value: Dual data flash blocks allow concurrent firmware operation and parameter logging; XCIN/XCOUT enables accurate wake-up timing for periodic diagnostics. |
Use Scenario: Standalone environmental sensor node measuring temperature, humidity, and air quality in factory settings. IC Role / Device Role / Timing Role: Data acquisition MCU sampling 12-channel A/D, processing sensor data, and transmitting via UART to gateway. Use Value: 10-bit A/D with internal VREF ensures stable measurement accuracy across 2.2–5.5 V supply range; low-power stop mode extends battery life. |
| Home Appliance UI Controller | Office Equipment Motor Driver |
Use Scenario: User interface controller in washing machines or HVAC systems handling keypad input, display updates, and safety interlocks. IC Role / Device Role / Timing Role: Real-time task scheduler managing KI0–KI3 key scan, PWM fan control, and watchdog supervision. Use Value: Key interrupt inputs (KI0–KI3) provide immediate response to button presses; 15-bit watchdog with prescaler prevents lockup during UI rendering. |
Use Scenario: Brushless DC motor commutation controller in printers or copiers requiring precise timing and fault detection. IC Role / Device Role / Timing Role: High-resolution timer-based PWM generator using Timer RC output compare and TRCIOA/TRCIOB pins. Use Value: 16-bit Timer RC with input capture supports rotor position sensing; hardware LIN enables communication with main controller for status reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21275SNFP | N version: -20°C to +85°C operating range; identical memory, peripherals, and pinout | Consumer-grade applications without extended temperature requirements | Select when ambient conditions remain above -20°C and cost optimization is prioritized over automotive qualification |
| R5F21276SDFP | D version with 32 KB program ROM (+8 KB), same 1.5 KB RAM and dual 1 KB data flash | Applications requiring larger firmware image size for enhanced feature sets or bootloader complexity | Choose when future firmware expansion or field-upgrade capability necessitates additional program memory headroom |
Compared with R5F21275SDFP#X6, R5F21275SNFP offers lower temperature grade but identical functionality for commercial use, while R5F21276SDFP provides 8 KB more program ROM for complex control algorithms-both retain the same data flash architecture, LIN module, and 32-pin LQFP footprint.
Availability
R5F21275SDFP#X6 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance UI controllers, and office equipment motor drivers requiring stable component supply across extended temperature ranges.
Supply support for R5F21275SDFP#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 automotive, industrial, and IoT markets.
The R8C/27 Group, including R5F21275SDFP#X6, was engineered for cost-sensitive, high-reliability embedded control in automotive body electronics and industrial automation where data retention, LIN connectivity, and low-power RTC operation are essential.
FAQ
What is the maximum operating frequency of the R5F21275SDFP#X6?
The R5F21275SDFP#X6 supports a maximum operating frequency of 20 MHz when powered at 3.0–5.5 V, achieving a minimum instruction execution time of 50 ns. This performance level is validated for the D version under industrial temperature conditions (-40°C to +85°C), enabling real-time control loop execution in automotive and industrial applications.
Does the R5F21275SDFP#X6 include hardware LIN support?
Yes, the R5F21275SDFP#X6 integrates a hardware LIN module compliant with LIN 2.0/2.1 standards, implemented using UART0 and Timer RA. This eliminates the need for external LIN transceivers in slave-node applications such as door modules or seat controllers, reducing system cost and PCB area while ensuring protocol timing accuracy.
How many A/D converter channels does the R5F21275SDFP#X6 support?
The R5F21275SDFP#X6 features a single 10-bit A/D converter with 12 analog input channels (AN0 through AN11), multiplexed across P0 and P1 port pins. These channels support simultaneous sampling configurations and accept input voltages referenced to the internal VREF pin, making them suitable for sensor interfacing in variable-supply environments.
What is the data flash endurance specification for the R5F21275SDFP#X6?
The R5F21275SDFP#X6 provides two independent 1 KB data flash blocks rated for 10,000 write/erase cycles each. This endurance level supports frequent parameter updates in automotive diagnostic systems or industrial calibration routines without premature wear-out, and enables robust wear-leveling strategies in firmware design.
Is the R5F21275SDFP#X6 pin-compatible with other R8C/27 Group MCUs?
Yes, all R8C/27 Group MCUs-including R5F21275SDFP#X6-use the identical 32-pin LQFP package (PLQP0032GB-A) and share the same pin assignments and electrical characteristics. This allows direct substitution within the family for memory or temperature grade changes without PCB redesign, provided peripheral usage aligns with the selected variant's specifications.
R5F21275SDFP#X6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/27
- 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:
- 2K x 8
- 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:
R5F21275SDFP#X6 FAQ
1.How can I place an order for R5F21275SDFP#X6 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21275SDFP#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 R5F21275SDFP#X6 reliable?
The price and inventory of R5F21275SDFP#X6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21275SDFP#X6 is usually 5 days.
3.What payment methods are accepted for R5F21275SDFP#X6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21275SDFP#X6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21275SDFP#X6?
R5F21275SDFP#X6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21275SDFP#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 R5F21275SDFP#X6?
For technical support, including R5F21275SDFP#X6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21275SDFP#X6 requirements.
6.How does Aetrix verify that R5F21275SDFP#X6 is sourced from the original manufacturer or authorized distributors?
All R5F21275SDFP#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 R5F21275SDFP#X6 meets industry standards.
7.What is the process for return or replacement of R5F21275SDFP#X6?
All R5F21275SDFP#X6 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21275SDFP#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 R5F21275SDFP#X6 part is unused and in its original packaging.
Return procedure for R5F21275SDFP#X6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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