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Renesas R5F21264SDFP#X6
- Part No.:
- R5F21264SDFP#X6
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21264SDFP#X6.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,044
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Product details
Overview
R5F21264SDFP#X6 from Renesas Electronics is a 16-bit R8C/26 Group single-chip microcontroller with 16 KB flash ROM, 1 KB RAM, 10-bit 12-channel ADC, UART0/UART1 serial interfaces, and hardware LIN module. It operates at up to 20 MHz (50 ns min instruction cycle), supports -40°C to +85°C ambient temperature (D version), and targets embedded control in office equipment and consumer appliances.
For engineers reviewing the R5F21264SDFP#X6 datasheet, R5F21264SDFP#X6 pinout, R5F21264SDFP#X6 application, or R5F21264SDFP#X6 equivalent, key selection criteria include its 32-pin LQFP package, integrated real-time clock (timer RE), on-chip high-speed oscillator with frequency adjustment, I²C interface, and low-power stop mode (0.7 µA at 3.0 V).
Technical Context
The R5F21264SDFP#X6 implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte address space. Its peripheral set includes Timer RA/RB (8-bit × 2), Timer RC (16-bit with input capture/output compare), and Timer RE with real-time clock and compare match function - all supported by 7-level priority interrupt architecture.
It integrates three clock generation circuits: XIN-based crystal/resonator oscillator, high-speed/low-speed on-chip oscillators (with frequency tuning), and XCIN/XCOUT 32 kHz circuit (D version only). The device features 25 general-purpose I/O pins, 3 dedicated input-only pins, and 8 LED drive-capable I/O ports (D version).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and 20-bit PC |
| Flash ROM | 16 KB program memory, 1000 erase/write cycles, VCC = 2.7–5.5 V programming |
| RAM | 1 KB on-chip SRAM for data, stack, and subroutine storage |
| ADC | 10-bit successive-approximation A/D converter with 12 analog inputs (AN0–AN11) |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (RTC + compare match) |
| Serial Interfaces | 2 UART channels (UART0/UART1), 1 I²C bus interface, 1 clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO) |
| Supply Voltage | 2.2–5.5 V (D version); full functionality at 3.0–5.5 V with 20 MHz operation |
| Power Modes | Wait mode (2.0 µA @ 3.0 V, f(XCIN) = 32 kHz), Stop mode (0.7 µA @ 3.0 V) |
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 / Ground | Core and I/O supply (2.2–5.5 V); AVCC/AVSS separately decoupled for ADC stability |
| RESET | Active-low reset input | Asynchronous hardware reset; internal pull-up enabled after power-on |
| XIN / XOUT | Crystal/resonator interface | Supports external 5–20 MHz crystal or ceramic resonator; on-chip feedback resistor included |
| XCIN / XCOUT | 32 kHz RTC crystal interface | Available only on D/J/K versions; enables low-power real-time clock in wait/stop modes |
| P0_0–P0_7, P1_0–P1_7, P3_1, P3_3–P3_7, P4_5, P5_3, P5_4 | CMOS I/O ports | 25 programmable bidirectional pins; individual direction register control; pull-up enable per pin |
| P4_2, P4_6, P4_7 | Input-only ports | Dedicated analog/digital input pins; P4_7 is strictly input-only (no output capability) |
| AN0–AN11 | Analog inputs | 12-channel ADC input mapping across P0/P1 ports; shared with digital I/O functions |
| TXD0 / RXD0 | UART0 transmit/receive | Full-duplex asynchronous serial communication; supports baud rate generation via timer |
| SCL / SDA | I²C bus interface | Standard-mode (100 kbps) I²C master/slave; open-drain outputs with internal pull-up option |
| TREO | Timer RE output | Real-time clock tick output or compare match signal; configurable as 1 Hz or user-defined frequency |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0-compliant transceiver logic (using Timer RA + UART0), eliminating external LIN PHY for basic node implementation |
| On-Chip Oscillator Tuning | High-speed on-chip oscillator adjustable via software register, enabling ±1% accuracy without external crystal for cost-sensitive applications |
| Low-Power Real-Time Clock | Timer RE driven by 32 kHz XCIN/XCOUT crystal provides accurate timekeeping in stop mode (0.7 µA), supporting wake-up events |
| LED Drive Capability | 8 I/O pins (P1_0–P1_7) support direct LED sink/source drive (20 mA typical), reducing BOM count in display/control panels |
| Interrupt Architecture | 23 total interrupt sources (15 internal, 4 external, 4 software) with 7 priority levels and vector table at fixed 0FFDCh–0FFFFh |
| Memory Protection | ROM security bit prevents unauthorized read-out of flash contents; write protection for critical memory regions via software lock bits |
Applications
| Office Equipment Control | Consumer Appliance Interface |
|---|---|
Use Scenario: Embedded controller in multifunction printers managing paper feed, motor control, and panel display. IC Role / Device Role / Timing Role: Primary MCU executing real-time motor sequencing, scanning timing, and USB/HOST interface coordination. Use Value: Integrated 12-channel ADC monitors sensor feedback (paper presence, temperature); UART0 handles host communication while UART1 manages internal peripherals. |
Use Scenario: Main control unit in microwave ovens handling keypad scan, display driver, and cooking time management. IC Role / Device Role / Timing Role: System-on-chip managing user input, safety interlocks, and precise cooking interval timing via Timer RE. Use Value: Hardware LIN module enables communication with remote display modules; LED drive ports directly drive 7-segment displays without external drivers. |
| Audio Equipment Front Panel | Industrial Sensor Node |
Use Scenario: User interface processor in compact stereo receivers controlling volume, source selection, and status LEDs. IC Role / Device Role / Timing Role: Dedicated UI controller interfacing rotary encoders, push buttons, and multi-color LED indicators. Use Value: 8 LED-drive I/O pins reduce external components; I²C interface connects to audio DAC or EEPROM for configuration storage. |
Use Scenario: Low-power environmental monitor in factory automation systems measuring temperature/humidity and reporting via UART. IC Role / Device Role / Timing Role: Standalone sensor aggregator entering stop mode between 10-second measurement cycles. Use Value: 0.7 µA stop-mode current extends battery life; 10-bit ADC resolves sub-degree thermal changes; XCIN-driven RTC ensures accurate sampling intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21264SNFP | N version: -20°C to +85°C operating range; no XCIN/XCOUT RTC circuit | Lower-cost consumer applications without extended temperature or RTC requirements | Select when ambient temperature stays above -20°C and RTC functionality is unnecessary |
| R5F21274SDFP | R8C/27 Group: adds 2 × 1 KB data flash (10,000-cycle endurance) vs. no data flash in R5F21264SDFP#X6 | Applications requiring field-updatable calibration data or parameter storage without external EEPROM | Choose when nonvolatile parameter retention between power cycles is required beyond program ROM |
Compared with R5F21264SNFP, R5F21264SDFP#X6 offers extended industrial temperature range and RTC capability; compared with R5F21274SDFP, it trades data flash for lower cost and identical program ROM/RAM while retaining full peripheral compatibility.
Availability
R5F21264SDFP#X6 is available at Aetrix Electronics and suitable for office equipment control, consumer appliance interface, and industrial sensor node applications requiring stable component supply and long-term industrial temperature support.
Supply support for R5F21264SDFP#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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R8C/26 Group, including R5F21264SDFP#X6, was designed for cost-sensitive, low-power embedded control in consumer and office equipment where integration of ADC, UART, I²C, and LIN simplifies system architecture.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F21264SDFP#X6?
R5F21264SDFP#X6 achieves a minimum instruction execution time of 50 ns at 20 MHz, requiring VCC = 3.0–5.5 V. It also supports 10 MHz operation down to 2.7 V and 5 MHz down to 2.2 V, making it suitable for wide-input-voltage battery-powered designs. The D version's -40°C to +85°C rating ensures reliability across industrial environments.
Does R5F21264SDFP#X6 include a real-time clock (RTC), and how is it implemented?
Yes, R5F21264SDFP#X6 implements RTC functionality via Timer RE, which operates using the 32 kHz XCIN/XCOUT crystal oscillator - available only on D, J, and K versions. This allows accurate timekeeping and periodic wake-up from stop mode (0.7 µA) without external RTC ICs, reducing system BOM and PCB area.
How many analog-to-digital converter (ADC) channels does R5F21264SDFP#X6 support, and what is its resolution?
R5F21264SDFP#X6 integrates a single 10-bit successive-approximation ADC with 12 analog input channels (AN0–AN11), mapped across P0 and P1 ports. Each channel supports programmable sampling time and conversion trigger sources (software, timer, or external event), enabling precise sensor monitoring in appliance and industrial applications.
Is R5F21264SDFP#X6 pin-compatible with other members of the R8C/26 Group?
Yes, all R8C/26 Group devices including R5F21264SDFP#X6 share identical 32-pin LQFP (PLQP0032GB-A) packaging and pin assignments. Memory size (8–32 KB ROM), RAM capacity (512–1.5 KB), and version grade (N/D/J/K) vary by part number, but hardware layout and peripheral pin mapping remain consistent across the group.
What communication interfaces are integrated into R5F21264SDFP#X6?
R5F21264SDFP#X6 integrates UART0 and UART1 for asynchronous serial communication, an I²C bus interface (SCL/SDA) compliant with standard-mode (100 kbps), one clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO), and a hardware LIN module built from Timer RA and UART0 - supporting LIN 2.0 physical layer signaling without external transceivers.
R5F21264SDFP#X6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/26
- 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
R5F21264SDFP#X6 FAQ
1.How can I place an order for R5F21264SDFP#X6 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21264SDFP#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 R5F21264SDFP#X6 reliable?
The price and inventory of R5F21264SDFP#X6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21264SDFP#X6 is usually 5 days.
3.What payment methods are accepted for R5F21264SDFP#X6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21264SDFP#X6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21264SDFP#X6?
R5F21264SDFP#X6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21264SDFP#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 R5F21264SDFP#X6?
For technical support, including R5F21264SDFP#X6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21264SDFP#X6 requirements.
6.How does Aetrix verify that R5F21264SDFP#X6 is sourced from the original manufacturer or authorized distributors?
All R5F21264SDFP#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 R5F21264SDFP#X6 meets industry standards.
7.What is the process for return or replacement of R5F21264SDFP#X6?
All R5F21264SDFP#X6 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21264SDFP#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 R5F21264SDFP#X6 part is unused and in its original packaging.
Return procedure for R5F21264SDFP#X6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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