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Renesas R5F21276SDFP#V2
- Part No.:
- R5F21276SDFP#V2
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21276SDFP#V2.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,815
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Product details
Overview
R5F21276SDFP#V2 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 32 KB flash program memory, 1.5 KB RAM, and dual 1 KB data flash blocks. It features an 89-instruction R8C CPU core, 12-channel 10-bit A/D converter, hardware LIN module (using Timer RA and UART0), and operates from 2.2–5.5 V across –40 to +85°C ambient. It targets embedded control in automotive body electronics and industrial sensor nodes.
For engineers reviewing the R5F21276SDFP#V2 datasheet, R5F21276SDFP#V2 pinout, R5F21276SDFP#V2 application, or R5F21276SDFP#V2 equivalent, key selection criteria include its D-version temperature grade, on-chip data flash endurance (10,000 erase/write cycles), LIN bus compliance, real-time clock capability via Timer RE, and 32-pin LQFP package compatibility with legacy R8C/26 designs.
Technical Context
The R5F21276SDFP#V2 implements the R8C CPU core with two register banks, 20-bit program counter, and 11-bit flag register supporting seven interrupt priority levels. Its memory architecture includes unified 1 Mbyte address space, with fixed interrupt vector table at 0FFDCh–0FFFFh and SFRs mapped to 00000h–002FFh.
Peripheral integration centers on mixed-signal timing and communication: Timer RC provides 16-bit input capture/output compare; UART0 enables hardware LIN physical layer support; I²C interface and clock-synchronous serial I/O with chip select allow multi-protocol sensor and actuator interfacing; XCIN/XCOUT pins (D version only) enable 32 kHz crystal for RTC operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and register bank switching |
| Flash Memory | 32 KB program ROM + 2 × 1 KB data flash blocks (10,000 erase cycles) |
| RAM | 1.5 KB on-chip SRAM for variables, stack, and subroutine context |
| A/D Converter | 10-bit resolution, 12 analog inputs, internal reference selectable via VREF pin |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (RTC + compare match) |
| Serial Interfaces | UART0/UART1 (2 channels), I²C bus, clock-synchronous serial I/O with chip select, hardware LIN (UART0 + Timer RA) |
| Operating Range | –40°C to +85°C ambient, 2.2–5.5 V supply (D version) |
| Package | 32-pin LQFP (PLQP0032GB-A), 7 × 7 mm, 0.8 mm pitch |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm lead pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Digital core supply (2.2–5.5 V); separate AVCC/AVSS for A/D noise isolation |
| RESET | Active-low reset input | Asynchronous hardware reset; requires external pull-up resistor |
| XIN / XOUT | Crystal oscillator input/output | Supports 5–20 MHz crystals; internal feedback resistor eliminates external component |
| XCIN / XCOUT | 32 kHz RTC crystal input/output | Available only on D/J/K versions; enables low-power real-time clock in wait/stop modes |
| P0_0–P0_7 | General-purpose I/O port | 8-bit bidirectional port with individual direction control; AN0–AN7 share pins |
| AN0–AN11 | Analog input channels | 12-channel 10-bit A/D converter inputs; P0_0–P0_7 and P1_0–P1_3 provide mapping |
| UART0 (TXD0/RXD0) | Asynchronous serial interface | Full-duplex UART used for LIN physical layer (TXD0 drives bus, RXD0 samples) |
| TRAO / TRAIO | Timer RA output / I/O | Used with UART0 for LIN bus timing and synchronization |
| SCL / SDA | I²C bus interface | Open-drain, 100/400 kbps compliant; supports multi-master and slave addressing |
| TREO | Timer RE output | Real-time clock tick output (e.g., 1 Hz) or compare match signal |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash | Dual 1 KB blocks with 10,000 erase/write cycles enable field firmware updates and parameter storage without external EEPROM |
| Hardware LIN module | Integrated UART0 + Timer RA implementation meets ISO 17987-4 physical layer requirements for automotive sub-networks |
| Low-power operation | 0.7 µA stop mode current (3.0 V, 32 kHz XCIN) supports battery-powered sensor nodes with multi-year runtime |
| Real-time clock (RTC) | Timer RE with 32 kHz XCIN input provides calendar/timekeeping independent of main CPU clock domain |
| 12-channel 10-bit A/D | Simultaneous sampling not supported, but configurable conversion triggers (software, timer, external) enable precise sensor acquisition timing |
| Interrupt priority levels | Seven programmable IPL levels ensure deterministic response to time-critical events like LIN frame reception or A/D completion |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, managing I/O states, and coordinating with gateway via UART. Use Value: Hardware LIN reduces CPU load by >70% versus bit-banged implementation; data flash stores calibration and fault logs across power cycles. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ in HVAC ducts. IC Role / Device Role / Timing Role: Low-power sensor aggregator with RTC-triggered wake-up, A/D sampling, and UART-based data upload. Use Value: 0.7 µA stop mode extends 2×AA battery life beyond 5 years; 12-channel A/D interfaces multiple analog sensors without multiplexer. |
| Home Appliance Motor Control | Office Equipment Power Management |
Use Scenario: Brushless DC motor commutation and thermal monitoring in smart washing machines. IC Role / Device Role / Timing Role: Real-time motor controller using Timer RC for precise PWM generation and A/D for current sensing. Use Value: 16-bit Timer RC input capture synchronizes with back-EMF zero-crossing detection; 10-bit A/D resolves <1% current ripple. |
Use Scenario: Standby power supervisor in multifunction printers, managing sleep/wake transitions and USB host detection. IC Role / Device Role / Timing Role: System manager monitoring AC detect, button press, and USB VBUS with fast wake-from-stop response. Use Value: External interrupt pins (INT0–INT3) achieve <10 µs wake latency; data flash retains user preferences across full power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21276SNFP | N version: –20°C to +85°C operating range; no XCIN/XCOUT pins; same memory and peripherals | Suitable for consumer-grade indoor appliances without extended temperature or RTC requirements | Select when ambient temperature stays above –20°C and real-time clock functionality is unnecessary |
| R5F21276JFP | J version: –40°C to +85°C rating; identical peripheral set and pinout; no XCIN/XCOUT | Targeted at industrial control panels requiring wider temperature tolerance but no RTC | Choose for cost-sensitive industrial deployments where 32 kHz RTC is not required but extended cold-start capability is needed |
Compared with R5F21276SDFP#V2, the SNFP variant lacks RTC support and cold-temperature operation, while the JFP variant adds temperature robustness without RTC-making the SDFP#V2 uniquely suited for automotive and battery-powered applications needing both extended temperature range and precise timekeeping.
Availability
R5F21276SDFP#V2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor control, and office equipment power management requiring stable component supply over extended product lifecycles.
Supply support for R5F21276SDFP#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/27 Group, including R5F21276SDFP#V2, was designed for cost-sensitive, low-power embedded control applications requiring integrated data flash, LIN connectivity, and extended temperature operation in automotive and industrial environments.
FAQ
What is the maximum operating frequency of the R5F21276SDFP#V2?
The R5F21276SDFP#V2 supports a maximum system clock of 20 MHz when powered at 3.0–5.5 V, achieving a minimum instruction execution time of 50 ns. At lower voltages (2.2–5.5 V), the maximum frequency is reduced to 5 MHz with 200 ns instruction timing. The high-speed on-chip oscillator includes frequency adjustment capability for fine-tuning.
Does the R5F21276SDFP#V2 support real-time clock functionality?
Yes, the R5F21276SDFP#V2 supports real-time clock (RTC) functionality through Timer RE when used with an external 32 kHz crystal connected to XCIN/XCOUT pins. This capability is enabled only on D, J, and K versions-R5F21276SDFP#V2 is a D-version part and includes these pins and RTC features.
How many analog input channels does the R5F21276SDFP#V2 have?
The R5F21276SDFP#V2 integrates a single 10-bit A/D converter with 12 analog input channels (AN0–AN11), mapped across P0_0–P0_7 and P1_0–P1_3. Input voltage range is 0 V to VREF, with VREF configurable externally via the dedicated VREF pin or internally from AVCC.
Is the R5F21276SDFP#V2 pin-compatible with other R8C/27 Group MCUs?
Yes, all R8C/27 Group MCUs-including R5F21276SDFP#V2-use the identical 32-pin LQFP (PLQP0032GB-A) package and share identical pin assignments and functions. Memory size, data flash presence, and temperature grade vary by part number suffix, but PCB layout remains unchanged across the group.
What LIN protocol compliance does the R5F21276SDFP#V2 provide?
The R5F21276SDFP#V2 implements hardware LIN using UART0 and Timer RA to meet ISO 17987-4 physical layer requirements. It supports standard LIN 2.x frame formatting, baud rate generation (e.g., 19.2 kbps), and sync field detection-offloading protocol handling from firmware and ensuring deterministic timing.
R5F21276SDFP#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:
- 32KB (32K 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:
R5F21276SDFP#V2 FAQ
1.How can I place an order for R5F21276SDFP#V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21276SDFP#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 R5F21276SDFP#V2 reliable?
The price and inventory of R5F21276SDFP#V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21276SDFP#V2 is usually 5 days.
3.What payment methods are accepted for R5F21276SDFP#V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21276SDFP#V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21276SDFP#V2?
R5F21276SDFP#V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21276SDFP#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 R5F21276SDFP#V2?
For technical support, including R5F21276SDFP#V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21276SDFP#V2 requirements.
6.How does Aetrix verify that R5F21276SDFP#V2 is sourced from the original manufacturer or authorized distributors?
All R5F21276SDFP#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 R5F21276SDFP#V2 meets industry standards.
7.What is the process for return or replacement of R5F21276SDFP#V2?
All R5F21276SDFP#V2 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21276SDFP#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 R5F21276SDFP#V2 part is unused and in its original packaging.
Return procedure for R5F21276SDFP#V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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