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Renesas R5F21264JFP#W4
- Part No.:
- R5F21264JFP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21264JFP#W4.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,097
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Product details
Overview
R5F21264JFP#W4 from Renesas Electronics is a 16-bit R8C/26 Group single-chip microcontroller with 16 KB flash ROM, 1 KB RAM, 12-channel 10-bit A/D converter, UART0/UART1 serial interfaces, and hardware LIN module - designed for automotive body electronics and industrial control applications operating at -40°C to +85°C.
For engineers reviewing the R5F21264JFP#W4 datasheet, R5F21264JFP#W4 pinout, R5F21264JFP#W4 application, or R5F21264JFP#W4 equivalent, this MCU delivers deterministic real-time performance via its 89-instruction R8C CPU core, on-chip oscillators (including 32 kHz XCIN support), and low-power stop mode (0.7 µA at 3.0 V), making it suitable for battery-backed and thermally constrained embedded systems.
Technical Context
The R5F21264JFP#W4 implements the R8C CPU core with 20-bit program counter, dual register banks, and 11-bit flag register supporting interrupt priority levels 0–7. It integrates three clock generation circuits: XIN-based crystal/resonator oscillator, high-speed/low-speed on-chip oscillators (with frequency adjustment), and XCIN/XCOUT 32 kHz RTC oscillator - only active in N/D/J versions.
Peripheral subsystems include Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (real-time clock with compare match), I²C bus interface, clock-synchronous serial I/O with chip select, and LIN protocol support via UART0 and Timer RA - all mapped to a fixed 32-pin LQFP package with verified pin functions per Renesas REJ03B0168-0210.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit architecture with 89 instructions and 20-bit address space (1 Mbyte) |
| Flash ROM / RAM | 16 KB program flash (1,000 erase cycles) and 1 KB SRAM for data and stack usage |
| A/D Converter | 10-bit resolution, 12 analog input channels (AN0–AN11), referenced to internal or external VREF |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit with 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) |
| Operating Range | -40°C to +85°C ambient temperature; 2.7–5.5 V supply voltage (J version) |
| Low-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/AVCC | Power supply input / Analog reference supply | Dual-purpose pin: digital core supply (2.7–5.5 V) and A/D converter reference; requires decoupling capacitor to AVSS |
| RESET | Active-low reset input | Asynchronous reset trigger; must be held low ≥100 ns to initiate hardware reset sequence |
| XIN/XCIN | Crystal/resonator or external clock input | Shared pin: XIN for main system clock (up to 20 MHz), XCIN for 32 kHz RTC oscillator (J version supported) |
| P0_0–P0_7 | General-purpose I/O port with analog inputs | Port P0 provides 8 pins, each configurable as digital I/O or A/D input (AN0–AN7); no LED drive capability |
| AN8–AN11 | Analog input channels | Assigned to P1_0–P1_3; support key interrupt (KI0–KI3) and timer capture (TRCIOA–TRCIOD) functions via software configuration |
| UART0/TXD0/RXD0 | Full-duplex asynchronous serial interface | Dedicated TXD0 (P1_4 output) and RXD0 (P1_5 input); supports LIN physical layer when combined with Timer RA |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via UART0 + Timer RA - eliminates external transceiver for basic node implementation |
| On-Chip Oscillators | Three independent clock sources: XIN crystal circuit, high-speed/low-speed on-chip oscillators (adjustable), and 32 kHz XCIN RTC oscillator |
| Real-Time Clock (RTC) | Timer RE provides calendar/timekeeping with compare match interrupt - enabled in J version using XCIN/XCOUT |
| Low-Voltage Operation | Functional down to 2.7 V at full speed (20 MHz), enabling direct integration with 3.3 V or 5 V system rails without level-shifting |
| Interrupt Architecture | 23 total interrupt sources (15 internal, 4 external, 4 software) with 7 priority levels and vector table at fixed 0FFDCh–0FFFFh |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Central body controller managing door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave firmware, sampling analog sensor inputs (e.g., ambient light, temperature), and driving discrete outputs via GPIO. Use Value: Hardware LIN module reduces BOM cost and PCB footprint; 12-channel A/D enables multi-sensor fusion without external mux; -40°C to +85°C rating ensures reliability across vehicle cabin environments. |
Use Scenario: Standalone environmental monitor deployed in factory machinery enclosures with vibration, EMI, and thermal cycling. IC Role / Device Role / Timing Role: Data acquisition engine performing periodic 10-bit A/D conversions on temperature, humidity, and current-sense signals, then transmitting via UART to gateway. Use Value: On-chip 32 kHz RTC enables precise time-stamped logging; low-power stop mode extends battery life in wireless variants; robust 2.7–5.5 V operation tolerates brown-out conditions in industrial power supplies. |
| Home Appliance Control | Office Equipment Motor Drive |
Use Scenario: Main control unit in washing machines coordinating water valves, motor phases, and user interface feedback. IC Role / Device Role / Timing Role: Real-time task scheduler interfacing with triac drivers, reading rotary encoder inputs, and managing LED displays via GPIO. Use Value: Dual register banks accelerate interrupt response; 8-bit timers (RA/RB) provide precise PWM for buzzer/audio tone generation; I²C interface connects to EEPROM for calibration data storage. |
Use Scenario: Paper feed and jam detection subsystem in laser printers and multifunction copiers. IC Role / Device Role / Timing Role: Dedicated motion controller sampling optical sensors, generating stepper motor step pulses, and communicating status via UART to host processor. Use Value: Input-capture capability on Timer RC measures encoder pulse timing for closed-loop speed control; 25 GPIO pins allow direct connection to multiple sensors and actuators; compact LQFP package fits tight mechanical constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21264SDFP | D version: identical memory, peripherals, and pinout; rated for -40°C to +85°C but lacks XCIN/XCOUT RTC oscillator support | Preferred for non-RTC applications where extended temperature range is required without 32 kHz timing precision | Select R5F21264SDFP if RTC functionality is unnecessary and lower-cost qualification path is prioritized |
| R5F21274JFP | J version of R8C/27 Group: adds 2 × 1 KB data flash (10,000 erase cycles) while retaining same ROM/RAM, peripherals, and package | Suitable for field-upgradable firmware or parameter storage where program flash endurance is insufficient | Choose R5F21274JFP when persistent non-volatile data logging or bootloader updates are required beyond program ROM capabilities |
Compared with R5F21264JFP#W4, R5F21264SDFP omits RTC oscillator support but shares identical peripheral set and temperature grade, whereas R5F21274JFP adds data flash for parameter retention - both require no PCB changes due to pin-to-pin compatibility and shared PLQP0032GB-A footprint.
Availability
R5F21264JFP#W4 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and home appliance control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21264JFP#W4 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 devices for automotive, industrial, and IoT markets.
The R8C/26 Group, including R5F21264JFP#W4, was engineered for cost-sensitive, real-time embedded applications demanding integrated peripherals, low-power operation, and automotive-grade reliability - particularly in body electronics and consumer white goods.
FAQ
What is the maximum operating frequency and supply voltage range for R5F21264JFP#W4?
R5F21264JFP#W4 operates up to 20 MHz at 3.0–5.5 V supply voltage. Its minimum instruction execution time is 50 ns under these conditions. The J version is specified for -40°C to +85°C ambient temperature and supports 2.7 V minimum supply at reduced frequencies (e.g., 100 ns at 10 MHz). This ensures compatibility with standard 3.3 V and 5 V system rails while maintaining timing integrity across temperature extremes.
Does R5F21264JFP#W4 include an integrated real-time clock (RTC)?
Yes, R5F21264JFP#W4 includes Timer RE configured as a real-time clock with compare match function. It uses the XCIN/XCOUT 32 kHz crystal oscillator circuit - explicitly supported in J version per Renesas REJ03B0168-0210 documentation. The RTC operates independently in wait/stop modes and provides calendar/timekeeping with interrupt capability, enabling time-stamped data logging without external components.
How many analog input channels does R5F21264JFP#W4 support, and what is their resolution?
R5F21264JFP#W4 supports 12 analog input channels (AN0–AN11) with 10-bit resolution. These channels are distributed across ports P0 (AN0–AN7), P1 (AN8–AN11), and accept input voltages referenced to either internal AVCC or external VREF (applied to P4_2). The A/D converter features sample-and-hold and programmable conversion start triggers, enabling synchronized multi-channel acquisition for sensor monitoring applications.
Is R5F21264JFP#W4 pin-compatible with other R8C/26 Group MCUs?
Yes, R5F21264JFP#W4 is pin-compatible with all 32-pin LQFP variants in the R8C/26 Group, including R5F21262JFP, R5F21265JFP, and R5F21266JFP. They share identical PLQP0032GB-A package, pin assignments, and peripheral mappings. Memory size differences (8–32 KB ROM, 512–1.5 KB RAM) do not affect pin functionality, allowing hardware reuse across firmware variants during product family scaling.
What communication interfaces are integrated into R5F21264JFP#W4?
R5F21264JFP#W4 integrates UART0 and UART1 for full-duplex asynchronous communication, one I²C bus interface (SCL/SDA), one clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO), and hardware LIN support via UART0 combined with Timer RA. These interfaces enable connectivity to sensors, displays, EEPROMs, and automotive sub-nodes without external protocol translators - reducing system complexity and bill-of-materials cost.
R5F21264JFP#W4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/26
- Packaging:
- Tape & Reel (TR)
- 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 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:
R5F21264JFP#W4 FAQ
1.How can I place an order for R5F21264JFP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21264JFP#W4 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 R5F21264JFP#W4 reliable?
The price and inventory of R5F21264JFP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21264JFP#W4 is usually 5 days.
3.What payment methods are accepted for R5F21264JFP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21264JFP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21264JFP#W4?
R5F21264JFP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21264JFP#W4 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 R5F21264JFP#W4?
For technical support, including R5F21264JFP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21264JFP#W4 requirements.
6.How does Aetrix verify that R5F21264JFP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F21264JFP#W4 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 R5F21264JFP#W4 meets industry standards.
7.What is the process for return or replacement of R5F21264JFP#W4?
All R5F21264JFP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21264JFP#W4, 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 R5F21264JFP#W4 part is unused and in its original packaging.
Return procedure for R5F21264JFP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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