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Renesas R5F21266SYFP#V2
- Part No.:
- R5F21266SYFP#V2
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21266SYFP#V2.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,827
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Product details
Overview
R5F21266SYFP#V2 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/26 Group, featuring an R8C CPU core, 32 KB flash program memory, 1.5 KB RAM, and operation at up to 20 MHz (50 ns min instruction time). It integrates a 10-bit 12-channel ADC, dual UARTs, I²C interface, hardware LIN module, four 8/16-bit timers, and operates across -40°C to +85°C - deployed in industrial control panels and appliance motor management systems.
For engineers reviewing the R5F21266SYFP#V2 datasheet, R5F21266SYFP#V2 pinout, R5F21266SYFP#V2 application, or R5F21266SYFP#V2 equivalent, key selection criteria include its 32-pin LQFP package, 25 GPIO with LED drive capability (D version), real-time clock support via Timer RE, low-power stop mode (0.7 µA), and compatibility with Renesas' standard R8C toolchain and debug interfaces.
Technical Context
The R5F21266SYFP#V2 implements the R8C CPU core with 89 fundamental instructions and 1 Mbyte address space, supporting register bank switching (B flag), 20-bit PC, and dual stack pointers (USP/ISP) for efficient interrupt handling. Its memory subsystem includes on-chip flash with 1,000 erase/write cycles and no data flash - distinguishing it from the R8C/27 Group.
Peripheral integration centers on deterministic timing control: Timer RC provides input capture/output compare on 16 bits; Timer RE delivers real-time clock functionality with compare match; UART0 and UART1 support full-duplex asynchronous communication; and the hardware LIN module uses UART0 + Timer RA for ISO 9141-2/SAE J2602 compliance without CPU overhead.
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, 1,000 erase/write cycles - sufficient for firmware with moderate update frequency |
| RAM | 1.5 KB on-chip SRAM for variables, stacks, and interrupt context storage |
| Max Clock Speed | 20 MHz (50 ns min instruction time at VCC = 3.0–5.5 V) - enables real-time response in motor control loops |
| A/D Converter | 10-bit resolution, 12 input channels - supports analog sensor monitoring (e.g., temperature, current, voltage) |
| Operating Temp | -40°C to +85°C (D version) - qualified for industrial ambient environments |
| Supply Voltage | 2.2 V to 5.5 V (N/D versions); 2.7–5.5 V (J/K) - supports wide-input power rails including battery-backed systems |
| Low-Power Modes | Stop mode draws 0.7 µA at 3.0 V - extends battery life in standby applications |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply inputs | Core logic supply (2.2–5.5 V); requires local decoupling per Renesas layout guidelines |
| AVCC / AVSS | Analog power domain | Dedicated supply for 10-bit ADC - must be filtered separately from digital VCC |
| XIN / XOUT | External crystal oscillator interface | Supports 1–20 MHz crystals; internal feedback resistor eliminates external components |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU and initializes peripherals to known state |
| P0_0–P0_7 | General-purpose I/O port | 8-bit bidirectional port with individual direction control; AN0–AN7 share pins for analog input |
| TXD0 / RXD0 | UART0 transmit/receive | Full-duplex asynchronous serial interface - used for host diagnostics or configuration |
| TRAO / TRBO | Timer RA/B output | 8-bit PWM outputs for LED dimming or simple motor phase control |
| TREO | Timer RE output | Real-time clock tick or alarm pulse output - synchronized to 32 kHz XCIN source when enabled |
| SCL / SDA | I²C bus interface | Standard-mode (100 kbps) I²C master/slave - connects to EEPROM, sensors, or PMICs |
| INT0 / INT1 / INT3 | External interrupt inputs | Edge-triggered interrupts for emergency stop, zero-cross detection, or encoder index pulses |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/SAE J2602 controller using UART0 + Timer RA - eliminates software bit-banging overhead |
| Real-Time Clock (RTC) | Timer RE with 32 kHz XCIN input support - provides calendar/timekeeping without external RTC IC |
| LED Drive Capability | 8 GPIO pins (P1_0–P1_7) support direct LED sink/source drive - reduces BOM count in HMI designs |
| Low-Voltage Operation | Functional down to 2.2 V (D version) - enables operation from single Li-ion or 3×AA battery packs |
| On-Chip Oscillators | High-speed (adjustable 1–20 MHz) and low-speed (15–60 kHz) RC oscillators - allow clock source redundancy |
| Interrupt Architecture | 7 priority levels, 15 internal + 4 external sources - supports nested, time-critical ISR scheduling |
Applications
| Industrial Motor Control | Home Appliance UI Panel |
|---|---|
Use Scenario: Brushless DC motor commutation and speed regulation in HVAC blowers or washing machine drums. IC Role / Device Role / Timing Role: Primary MCU executing FOC algorithms, sampling current/voltage via 12-channel ADC, generating 3-phase PWM via Timer RC outputs. Use Value: Integrated UART and LIN enable field-service diagnostics and OEM network integration without adding transceivers. |
Use Scenario: Touchless button interface and display backlight control in microwave ovens or induction cooktops. IC Role / Device Role / Timing Role: System controller managing capacitive touch sensing, 8-bit LED driver ports, and real-time cooking timer via Timer RE. Use Value: On-chip 32 kHz oscillator and RTC eliminate external crystal, reducing component count and board area. |
| Automotive Body Control | Office Equipment Power Management |
Use Scenario: Door lock actuator sequencing and window lift anti-pinch logic in entry-level vehicles. IC Role / Device Role / Timing Role: LIN slave node receiving commands from body control module; monitors switch inputs and drives relays/motors. Use Value: Hardware LIN compliance ensures interoperability with standard automotive networks without protocol stack licensing. |
Use Scenario: Standby power supervision and wake-on-LAN event handling in multifunction printers. IC Role / Device Role / Timing Role: Low-power supervisor monitoring AC detect, USB activity, and network packets; wakes main SoC from stop mode (0.7 µA). Use Value: Sub-µA stop mode extends sleep duration while maintaining fast wake latency (<10 µs) for responsive user interaction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21266SDFP | Identical silicon; differs only in marking - #V2 denotes tape-and-reel packaging per JEDEC standard, SDFP indicates D-version temperature grade (-40°C to +85°C) without #V2 suffix | No functional difference; both meet same electrical specs and pinout - #V2 variant optimized for automated SMT placement | Select R5F21266SYFP#V2 for high-volume production requiring JEDEC-compliant reel packaging and traceability. |
| R5F21276SDFP | Same R8C/2x platform but R8C/27 Group - adds 2×1 KB data flash (10,000-cycle endurance) and removes XCIN/XCOUT pins | Enables field firmware updates and parameter storage; unsuitable where 32 kHz RTC crystal interface is required | Choose R5F21276SDFP only if data logging or over-the-air parameter persistence is needed - not a drop-in replacement due to missing XCIN/XCOUT. |
Compared with R5F21266SDFP, the R5F21266SYFP#V2 offers identical functionality with standardized tape-and-reel delivery; versus R5F21276SDFP, it trades data flash for guaranteed 32 kHz crystal oscillator support - critical for RTC accuracy in temperature-variable environments.
Availability
R5F21266SYFP#V2 is available at Aetrix Electronics and suitable for industrial motor control, home appliance UI panels, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for R5F21266SYFP#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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R8C/26 Group targets cost-sensitive, reliability-critical embedded applications in industrial automation and consumer appliances - emphasizing low-power operation, integrated peripherals, and long-term supply assurance.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F21266SYFP#V2?
The R5F21266SYFP#V2 achieves a minimum instruction execution time of 50 ns at 20 MHz, requiring VCC = 3.0 V to 5.5 V. It also supports lower frequencies (10 MHz, 5 MHz) down to 2.2 V, enabling flexible power-supply design in battery-powered or wide-input applications. All voltage/frequency combinations are validated per Renesas Electrical Characteristics tables.
Does R5F21266SYFP#V2 include data flash memory?
No, the R5F21266SYFP#V2 belongs to the R8C/26 Group and contains only program flash memory (32 KB) with 1,000 erase/write cycles. Data flash (1 KB × 2 blocks) is exclusive to the R8C/27 Group, such as R5F21276SDFP. This distinction is confirmed in Renesas' Product Information Tables 1.3 and 1.4.
Which pins support the 32 kHz real-time clock (RTC) function on R5F21266SYFP#V2?
The R5F21266SYFP#V2 supports RTC via Timer RE using the XCIN/XCOUT pins (pins 4 and 6), but only in N and D versions. Since R5F21266SYFP#V2 is a D-version part (denoted by 'D' in position 11 of the part number), XCIN/XCOUT are active and required for precise 32 kHz crystal-based RTC operation.
Can R5F21266SYFP#V2 drive LEDs directly, and which pins are capable?
Yes, the R5F21266SYFP#V2 supports direct LED drive on P1_0 through P1_7 - eight I/O pins configurable as high-current sinks/sources. This capability is explicitly documented for N and D versions in Table 1.1 and applies to R5F21266SYFP#V2 as a D-version device, reducing need for external drivers in status-indicator designs.
What debug and programming interfaces are supported by R5F21266SYFP#V2?
The R5F21266SYFP#V2 supports on-chip debugging via Renesas' standard E8/E8a debug interface using the dedicated pins MODE, RESET, and XIN/XOUT. Flash programming is performed through the same interface using Renesas Flash Development Toolkit (FDT) - no external programmer hardware beyond the debug probe is required.
R5F21266SYFP#V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/26
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21266SYFP#V2 FAQ
1.How can I place an order for R5F21266SYFP#V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21266SYFP#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 R5F21266SYFP#V2 reliable?
The price and inventory of R5F21266SYFP#V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21266SYFP#V2 is usually 5 days.
3.What payment methods are accepted for R5F21266SYFP#V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21266SYFP#V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21266SYFP#V2?
R5F21266SYFP#V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21266SYFP#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 R5F21266SYFP#V2?
For technical support, including R5F21266SYFP#V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21266SYFP#V2 requirements.
6.How does Aetrix verify that R5F21266SYFP#V2 is sourced from the original manufacturer or authorized distributors?
All R5F21266SYFP#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 R5F21266SYFP#V2 meets industry standards.
7.What is the process for return or replacement of R5F21266SYFP#V2?
All R5F21266SYFP#V2 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21266SYFP#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 R5F21266SYFP#V2 part is unused and in its original packaging.
Return procedure for R5F21266SYFP#V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21266SYFP#V2 Tags
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