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Renesas R5F21275SDFP#V2
- Part No.:
- R5F21275SDFP#V2
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21275SDFP#V2.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,731
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Product details
Overview
R5F21275SDFP#V2 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 24 KB flash program ROM, 1.5 KB RAM, and dual 1 KB data flash blocks. It features an 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 industrial control and automotive subsystems operating from −40°C to +85°C.
For engineers reviewing the R5F21275SDFP#V2 datasheet, R5F21275SDFP#V2 pinout, R5F21275SDFP#V2 application, or R5F21275SDFP#V2 equivalent, key selection criteria include its D-version temperature grade, on-chip data flash endurance (10,000 erase/write cycles), 32-pin LQFP package (PLQP0032GB-A), and integrated LIN physical layer support via Timer RA and UART0.
Technical Context
The R5F21275SDFP#V2 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). Its memory architecture separates 24 KB program ROM from two independent 1 KB data flash blocks-enabling simultaneous code execution and nonvolatile parameter storage without interrupting operation.
Peripheral integration includes Timer RC (16-bit input capture/output compare), Timer RE (real-time clock with compare match), and dual UART channels supporting LIN 2.0 frame formatting via hardware assist. The device uses three clock generation circuits: XIN oscillator (up to 20 MHz), high-speed on-chip oscillator (adjustable), and XCIN/XCOUT 32 kHz RTC crystal interface (D-version enabled).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions; enables compact firmware and deterministic timing for real-time control loops. |
| Flash Memory | 24 KB program ROM + 2 × 1 KB data flash blocks; supports field-upgradable parameters without erasing application code. |
| A/D Converter | 10-bit resolution, 12 input channels; provides sufficient precision for motor current sensing and sensor signal acquisition. |
| Serial Interfaces | 2 UART channels (UART0/UART1) + I²C + clock-synchronous serial I/O; enables multi-protocol communication in resource-constrained nodes. |
| Operating Temperature | −40°C to +85°C (D version); qualified for under-hood automotive modules and industrial PLC I/O modules. |
| Package | 32-pin LQFP (PLQP0032GB-A); standard surface-mount footprint compatible with automated assembly and thermal management up to 1.5 W. |
| Power Supply | 2.2 V to 5.5 V operation; supports direct connection to 3.3 V or 5 V system rails without external regulators. |
Pinout & Package
32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm body, 0.8 mm pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply input / ground | Primary digital power domain (2.2–5.5 V); decoupling required per Renesas layout guidelines. |
| AVCC / AVSS | Analog power supply | Dedicated analog rail for A/D converter; must be filtered separately from digital VCC to maintain 10-bit linearity. |
| XIN / XOUT | External crystal oscillator input/output | Supports 1–20 MHz crystals; enables precise timing for UART baud rates and LIN synchronization. |
| XCIN / XCOUT | 32 kHz RTC crystal interface | Enables low-power real-time clock operation in wait/stop modes; available only on D-version devices like R5F21275SDFP#V2. |
| P0_0–P0_7 | General-purpose I/O port | 8-bit bidirectional port with individual direction control; AN0–AN7 mapped for analog inputs. |
| UART0 (TXD0/RXD0) | Asynchronous serial interface | Full-duplex UART channel used for host debugging, diagnostics, or LIN master node communication. |
| UART1 (TXD1/RXD1) | Secondary UART channel | Configurable as LIN slave transceiver interface; supports automatic break detection and sync field handling. |
| TRAO / TRAIO | Timer RA output / I/O | Hardware-assisted LIN bus output (TRAO) and input (TRAIO); eliminates software bit-banging for LIN physical layer. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 1 KB data flash blocks | Enables wear-leveling across two independent sectors; supports 10,000 erase/write cycles for calibration data logging. |
| Hardware LIN module | Integrates Timer RA and UART0 to implement LIN 2.0 physical layer timing without CPU intervention during frame transmission. |
| 12-channel 10-bit A/D converter | Simultaneous sampling not supported, but configurable trigger sources (timer, software) allow synchronized acquisition of motor phase currents. |
| Real-time clock (Timer RE) | Operates from 32 kHz XCIN crystal in stop mode; maintains timekeeping at 0.7 µA typical current, enabling battery-backed operation. |
| 7-level priority interrupt controller | Allows deterministic response to critical events (e.g., LIN error interrupt at highest priority) while servicing lower-priority background tasks. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave protocol, reading switch inputs, driving LED indicators, and managing power sequencing. Use Value: Hardware LIN support reduces CPU load by 35% versus software bit-banged implementations, extending sleep-mode battery life. |
Use Scenario: Wireless-capable environmental monitor collecting temperature, humidity, and CO₂ readings in factory settings. IC Role / Device Role / Timing Role: Signal acquisition MCU interfacing with analog sensors, performing local preprocessing, and formatting data for RF transmission. Use Value: 12-channel A/D with programmable gain allows direct connection of multiple sensor types without external signal conditioning circuitry. |
| Home Appliance Motor Controller | Medical Diagnostic Equipment Subsystem |
Use Scenario: Variable-speed control of BLDC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Real-time motor commutation engine using Timer RC for precise PWM generation and A/D for current feedback sampling. Use Value: 50 ns instruction cycle enables 20 kHz PWM carrier frequency with <1 µs jitter, meeting IEC 60335 safety-critical timing requirements. |
Use Scenario: Front-end signal conditioning and data buffering in portable ultrasound probe electronics. IC Role / Device Role / Timing Role: Low-noise analog acquisition node digitizing transducer outputs before transfer to main processor via UART. Use Value: Dedicated AVCC/AVSS rails and on-chip reference voltage (VREF) reduce SNR degradation to ≤72 dB, preserving diagnostic image fidelity. |
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); lacks XCIN/XCOUT RTC crystal interface; identical flash/RAM configuration. | Suitable for consumer-grade appliances where extended temperature range is unnecessary. | Select R5F21275SNFP only if ambient operating temperature remains above −20°C and RTC crystal support is unused. |
| R5F21276SDFP | D-version with 32 KB program ROM and same 1.5 KB RAM/data flash; identical peripheral set and pinout. | Required when firmware size exceeds 24 KB or future feature expansion demands additional code space. | Choose R5F21276SDFP when final application binary approaches 22 KB to avoid last-minute ROM constraints. |
Compared with R5F21275SDFP#V2, R5F21275SNFP sacrifices industrial temperature range and RTC crystal support for cost reduction, while R5F21276SDFP trades no functionality for +8 KB program memory-making both viable alternatives depending on thermal and firmware size requirements.
Availability
R5F21275SDFP#V2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and home appliance motor controllers requiring stable component supply across extended temperature ranges.
Supply support for R5F21275SDFP#V2 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, and power solutions for automotive, industrial, and IoT applications.
The R8C/27 Group, including R5F21275SDFP#V2, was designed for cost-sensitive, real-time embedded systems requiring integrated LIN, analog acquisition, and data logging-targeting automotive sub-systems and industrial controls.
FAQ
What is the maximum operating frequency of the R5F21275SDFP#V2?
The R5F21275SDFP#V2 supports a maximum XIN clock frequency of 20 MHz, achieving a 50 ns minimum instruction execution time at VCC = 3.0–5.5 V. This timing applies to non-K versions; the D-version rating matches this specification, enabling deterministic real-time performance for motor control and LIN communication tasks.
Does the R5F21275SDFP#V2 include hardware LIN support?
Yes, the R5F21275SDFP#V2 integrates a hardware LIN module using Timer RA and UART0. This implementation handles LIN 2.0 physical layer timing-including break field detection, sync field generation, and checksum calculation-without CPU overhead, reducing firmware complexity and improving protocol reliability.
What is the data flash endurance specification for the R5F21275SDFP#V2?
The R5F21275SDFP#V2 provides two independent 1 KB data flash blocks rated for 10,000 erase/write cycles each. This endurance level supports long-term parameter storage in automotive and industrial applications where calibration data or usage logs require frequent updates over product lifetime.
Can the R5F21275SDFP#V2 operate from a 3.3 V supply?
Yes, the R5F21275SDFP#V2 operates across 2.2 V to 5.5 V, fully supporting 3.3 V nominal supply. At 3.0 V and 10 MHz XIN, typical active current consumption is 6 mA, and stop-mode current drops to 0.7 µA-making it suitable for battery-powered designs with strict power budgets.
Is the R5F21275SDFP#V2 pin-compatible with other R8C/27 Group devices?
Yes, all R8C/27 Group MCUs-including R5F21275SDFP#V2-use the identical 32-pin LQFP package (PLQP0032GB-A) and share full pin-to-pin compatibility. Peripheral pin assignments, power/ground locations, and reset configuration are consistent across variants, enabling hardware reuse across memory and temperature grade options.
R5F21275SDFP#V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/27
- Packaging:
- Tray
- 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#V2 FAQ
1.How can I place an order for R5F21275SDFP#V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21275SDFP#V2 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#V2 reliable?
The price and inventory of R5F21275SDFP#V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21275SDFP#V2 is usually 5 days.
3.What payment methods are accepted for R5F21275SDFP#V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21275SDFP#V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21275SDFP#V2?
R5F21275SDFP#V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21275SDFP#V2 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#V2?
For technical support, including R5F21275SDFP#V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21275SDFP#V2 requirements.
6.How does Aetrix verify that R5F21275SDFP#V2 is sourced from the original manufacturer or authorized distributors?
All R5F21275SDFP#V2 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#V2 meets industry standards.
7.What is the process for return or replacement of R5F21275SDFP#V2?
All R5F21275SDFP#V2 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21275SDFP#V2, 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#V2 part is unused and in its original packaging.
Return procedure for R5F21275SDFP#V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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