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Renesas R5F21272SDFP#X6
- Part No.:
- R5F21272SDFP#X6
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21272SDFP#X6.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
R5F21272SDFP#X6 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 8 KB flash program memory, 1 KB × 2 data flash (2 KB total), 512 bytes RAM, and 32-pin LQFP (PLQP0032GB-A) packaging. It integrates an R8C CPU core, 10-bit 12-channel ADC, dual UARTs, I²C interface, hardware LIN module, four 8/16-bit timers, and operates from -40°C to +85°C - designed for embedded control in industrial and automotive subsystems.
For engineers reviewing the R5F21272SDFP#X6 datasheet, R5F21272SDFP#X6 pinout, R5F21272SDFP#X6 application, or R5F21272SDFP#X6 equivalent, key selection criteria include its D-version temperature grade (-40°C to +85°C), on-chip data flash endurance (10,000 erase/write cycles), real-time clock capability via Timer RE, LIN bus compliance, and 32-pin LQFP footprint compatibility with other R8C/27 devices.
Technical Context
The R5F21272SDFP#X6 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 8 KB flash program ROM from dual 1 KB data flash blocks, enabling independent firmware updates and parameter storage without erasing application code.
Peripheral integration includes UART0/UART1 with LIN support (using Timer RA and UART0), I²C bus interface, clock-synchronous serial I/O with chip select, and Timer RE configured for real-time clock operation - all accessible through multiplexed I/O pins on the 32-pin LQFP package, including dedicated analog inputs (AN0–AN11) and LED drive-capable ports (P1_0–P1_7).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and register bank switching |
| Flash Memory | 8 KB program ROM + 1 KB × 2 data flash (10,000 write/erase cycles) |
| RAM | 512 bytes of on-chip SRAM for variables, stack, and interrupt handling |
| ADC | 10-bit successive-approximation A/D converter with 12 input channels (AN0–AN11) |
| Timers | Timer RA/RB (8-bit ×2), Timer RC (16-bit), Timer RE (RTC + compare match) |
| Serial Interfaces | 2× UART (UART0/UART1), 1× I²C, 1× clock-sync serial I/O with chip select, 1× hardware LIN |
| Operating Temp | -40°C to +85°C (D version), supporting industrial and under-hood automotive environments |
| Package | 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm body, 0.8 mm lead pitch, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / ground | Primary digital power domain (2.2–5.5 V); AVCC/AVSS required for ADC reference stability |
| RESET | Active-low reset input | Hardware reset assertion; internal pull-up enabled; compatible with external reset ICs |
| XIN / XOUT | Crystal oscillator input/output | Supports 5–20 MHz crystal/resonator; enables precise timing for UART/LIN baud rate generation |
| XCIN / XCOUT | 32 kHz RTC crystal input/output | D-version only; feeds Timer RE for low-power real-time clock operation in wait/stop modes |
| P0_0–P0_7 | General-purpose I/O / ADC inputs | 8-bit port with AN0–AN7 analog inputs; configurable pull-up; supports PWM output via Timer RC |
| P1_0–P1_7 | I/O / LED drive / KI interrupts | D-version LED drive capability (sink current up to 20 mA); KI0–KI3 support wake-up from stop mode |
| UART0 (TXD0/RXD0) | Asynchronous serial TX/RX | Full-duplex communication; used with Timer RA for LIN physical layer signaling |
| SCL / SDA | I²C bus clock/data | Standard-mode (100 kbps) I²C interface; supports multi-master and slave addressing |
| TREO | Timer RE output | Real-time clock tick output (e.g., 1 Hz); usable as wake-up source or system timing reference |
Key Features
| Feature | Design Value |
|---|---|
| Data Flash Endurance | 10,000 erase/write cycles per block - enables robust field firmware updates and NV parameter storage |
| LIN Bus Compliance | Hardware LIN 2.0/2.1 support via UART0 + Timer RA - reduces CPU overhead and ensures protocol timing accuracy |
| Low-Power Operation | 0.7 µA stop mode current (VCC = 3.0 V) with RTC active - extends battery life in always-on sensor nodes |
| Analog Integration | 12-channel 10-bit ADC with internal reference (VREF) and scan mode - eliminates external reference components |
| Interrupt Flexibility | 7 priority levels, 15 internal + 4 external + 4 software interrupt sources - supports deterministic real-time response |
| On-Chip Oscillators | High-speed (adjustable 1–20 MHz) and low-speed (32 kHz) on-chip oscillators - enables clock source redundancy and fast wake-up |
Applications
| Automotive Body Control | 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 node firmware, managing analog sensor inputs (potentiometers, temp), and driving LED indicators. Use Value: Hardware LIN module ensures deterministic 19.2 kbps communication with body control module; data flash stores calibration offsets across power cycles. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality in factory settings. IC Role / Device Role / Timing Role: Low-power sensing hub collecting ADC data, performing local threshold checks, and transmitting alerts via UART to gateway. Use Value: 0.7 µA stop mode with RTC wake-up enables multi-year battery life; 12-channel ADC interfaces directly to multiple analog sensors without external mux. |
| Home Appliance UI Panel | Office Equipment Motor Control |
Use Scenario: Touchless control panel for microwave ovens or washing machines using capacitive proximity and rotary encoder inputs. IC Role / Device Role / Timing Role: Front-end controller handling key interrupt wake-up (KI0–KI3), LED display drive (P1_0–P1_7), and buzzer timing via Timer RB. Use Value: Integrated LED drive ports eliminate external drivers; KI interrupt capability allows immediate wake-from-stop response to user gesture. |
Use Scenario: Closed-loop speed regulation for paper feed motors in multifunction printers. IC Role / Device Role / Timing Role: Real-time motor controller reading quadrature encoder (via TRCIOA/TRCIOB), generating PWM (Timer RC), and communicating status via I²C. Use Value: 16-bit Timer RC with input capture supports precise encoder period measurement; I²C interface enables seamless integration with main SoC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21274SDFP#X6 | 16 KB program ROM + same 2 KB data flash; identical peripherals and pinout | Requires larger firmware image; no change to PCB or driver stack | Select when application code exceeds 8 KB but retains same memory partitioning needs |
| R5F21262SDFP#X6 | R8C/26 Group variant: no data flash; same 8 KB ROM, 512 B RAM, and D-temp grade | Lacks nonvolatile parameter storage; requires external EEPROM or flash for configuration data | Choose for cost-sensitive designs where field updates or calibration persistence are unnecessary |
Compared with R5F21272SDFP#X6, R5F21274SDFP#X6 offers scalable code space without peripheral trade-offs, while R5F21262SDFP#X6 removes data flash to reduce cost - making the R5F21272SDFP#X6 optimal for applications needing both compact firmware and reliable on-chip NV storage.
Availability
R5F21272SDFP#X6 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance control panels, and office equipment motor controllers requiring stable component supply across extended product lifecycles.
Supply support for R5F21272SDFP#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 R5F21272SDFP#X6, was engineered for cost-effective, low-power embedded control in resource-constrained systems requiring integrated analog, serial interfaces, and nonvolatile data storage.
FAQ
What is the maximum operating frequency and voltage range for the R5F21272SDFP#X6?
The R5F21272SDFP#X6 operates at up to 20 MHz with a supply voltage range of 3.0 V to 5.5 V. At lower frequencies (e.g., 10 MHz), it supports down to 2.7 V, and at 5 MHz, it functions from 2.2 V - enabling flexible power design across battery and line-powered applications. The D-version rating ensures full specification compliance from -40°C to +85°C.
Does the R5F21272SDFP#X6 support real-time clock functionality?
Yes, the R5F21272SDFP#X6 supports real-time clock (RTC) functionality via Timer RE when used with the 32 kHz crystal connected to XCIN/XCOUT pins. This configuration is valid for D-version devices and provides accurate timekeeping in wait and stop modes with typical current consumption of 2.0 µA (wait) and 0.7 µA (stop).
How many analog input channels does the R5F21272SDFP#X6 ADC support?
The R5F21272SDFP#X6 integrates a single 10-bit successive-approximation ADC with 12 analog input channels (AN0 through AN11), mapped across P0, P1, and P3 ports. It supports internal reference voltage (VREF pin) and software-controlled scan mode for automated multi-channel conversion sequences.
Is the R5F21272SDFP#X6 pin-compatible with other R8C/27 Group MCUs?
Yes, the R5F21272SDFP#X6 shares the identical 32-pin LQFP (PLQP0032GB-A) package and pin assignment with all R8C/27 Group variants, including R5F21274SDFP#X6 and R5F21276SDFP#X6. Peripheral pin mappings, power, reset, and clock connections are fully consistent across the group.
What LIN protocol versions does the R5F21272SDFP#X6 hardware module support?
The R5F21272SDFP#X6 implements a hardware LIN module compliant with LIN 2.0 and LIN 2.1 specifications, using UART0 and Timer RA to generate precise break fields, sync fields, and checksums. It supports both master and slave roles and handles automatic header detection and response timing without CPU intervention.
R5F21272SDFP#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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 512 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:
R5F21272SDFP#X6 FAQ
1.How can I place an order for R5F21272SDFP#X6 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21272SDFP#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 R5F21272SDFP#X6 reliable?
The price and inventory of R5F21272SDFP#X6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21272SDFP#X6 is usually 5 days.
3.What payment methods are accepted for R5F21272SDFP#X6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21272SDFP#X6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21272SDFP#X6?
R5F21272SDFP#X6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21272SDFP#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 R5F21272SDFP#X6?
For technical support, including R5F21272SDFP#X6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21272SDFP#X6 requirements.
6.How does Aetrix verify that R5F21272SDFP#X6 is sourced from the original manufacturer or authorized distributors?
All R5F21272SDFP#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 R5F21272SDFP#X6 meets industry standards.
7.What is the process for return or replacement of R5F21272SDFP#X6?
All R5F21272SDFP#X6 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21272SDFP#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 R5F21272SDFP#X6 part is unused and in its original packaging.
Return procedure for R5F21272SDFP#X6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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