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Renesas R5F21245SDFP#V2
- Part No.:
- R5F21245SDFP#V2
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F21245SDFP#V2.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,504
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Product details
Overview
R5F21245SDFP#V2 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/24 Group, featuring 24 KB flash program memory, 2 KB RAM, and operation across -40°C to +85°C. It integrates an R8C/Tiny Series CPU core, 12-channel 10-bit A/D converter, dual UARTs, LIN module, I²C interface, and multiple timers including real-time clock (Timer RE). It targets embedded control in industrial appliances and office equipment.
For engineers reviewing the R5F21245SDFP#V2 datasheet, R5F21245SDFP#V2 pinout, R5F21245SDFP#V2 application, or R5F21245SDFP#V2 equivalent, key selection criteria include its D-version temperature grade (-40°C to +85°C), 52-pin LQFP package (PLQP0052JA-A), 24 KB flash/2 KB RAM memory configuration, and integrated LIN bus support for automotive body electronics and industrial sensor nodes.
Technical Context
The R5F21245SDFP#V2 implements the R8C/Tiny Series 16-bit CPU core with 89 fundamental instructions and minimum instruction execution time of 50 ns at 20 MHz. It operates in single-chip mode with 1 Mbyte address space and supports three clock generation circuits: XIN-based (up to 20 MHz), high-speed on-chip oscillator (adjustable), and 32 kHz XCIN-based real-time clock.
Peripheral integration includes Timer RA/RB (8-bit × 2), Timer RD (16-bit × 2 with input capture/output compare), Timer RE (real-time clock with compare match), two UART channels (UART0/UART1), one I²C bus interface, one clock synchronous serial I/O with chip select, and hardware LIN module using Timer RA and UART0 - all mapped to dedicated pins in the 52-pin LQFP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit, 89 instructions, 50 ns min. instruction time at 20 MHz |
| Memory | 24 KB flash program ROM, 2 KB RAM - sufficient for mid-complexity firmware with data buffering |
| A/D Converter | 10-bit resolution, 12 input channels (AN0–AN11) - supports multi-sensor analog monitoring |
| Timers | Timer RA/RB (8-bit), Timer RD (16-bit × 2), Timer RE (RTC + compare match) - enables precise timing, PWM, and calendar functions |
| Serial Interfaces | 2× UART, 1× I²C, 1× clock sync serial I/O w/ chip select, 1× hardware LIN - covers industrial comms and automotive sub-networks |
| Operating Range | -40°C to +85°C (D version), VCC = 2.2–5.5 V - suitable for extended-temperature industrial environments |
| Package | 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm, 0.65 mm pitch - standard surface-mount footprint for cost-sensitive PCBs |
Pinout & Package
Package: 52-pin molded-plastic LQFP (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pin pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog input / I/O port | 12-bit-capable A/D inputs AN0–AN7; configurable CMOS I/O with pull-up option |
| P1_0–P1_7 | I/O port / peripheral multiplex | Supports KI0–KI3 (key interrupt), RXD0/TXD0 (UART0), CLK0, INT1 - flexible signal routing |
| P2_0–P2_7 | LED drive / timer I/O | TRDIOA0–TRDIOD1 (Timer RD), TRDCLK, LED sink/source capability - direct display control |
| P3_0–P3_7 | I/O / serial interface | TRAO/TRBO (Timer RA/RB), SDA/SCL (I²C), SSO/SSI/SCS/SSCK (serial I/O) - consolidated comms interface |
| P4_2–P4_7 | Analog reference / clock / reset | VREF (A/D reference), XCIN/XCOUT (32 kHz RTC crystal), XIN/XOUT (main oscillator), RESET, MODE - system timing and initialization |
| P6_0–P6_7 | Timer output / UART1 / interrupt | TREO (RTC output), INT2/INT3, TXD1/RXD1 (UART1), CLK1 - secondary comms and event handling |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via Timer RA + UART0 - eliminates external transceiver for body control networks |
| Real-Time Clock (Timer RE) | Dedicated 32 kHz crystal-driven RTC with compare match - enables low-power timekeeping without CPU load |
| Low-Power Operation | 0.7 µA in stop mode, 2.0 µA in wait mode (f(XCIN) = 32 kHz) - extends battery life in portable or energy-harvesting systems |
| On-Chip Oscillators | High-speed adjustable on-chip oscillator + low-speed 32 kHz circuit - reduces BOM cost and board space vs. external crystals |
| 12-Channel 10-Bit A/D | Simultaneous sampling not supported, but 12 inputs enable multi-sensor acquisition (e.g., temp, voltage, current) |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in washing machine main control board managing motor drive, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central 16-bit MCU executing real-time motor control loops, reading 12-channel A/D for analog sensors, and driving LED displays via P2 ports. Use Value: Integrated LIN module enables communication with door lock or detergent dispenser modules; 24 KB flash accommodates field-upgradable firmware. | Use Scenario: Standalone environmental monitor measuring temperature, humidity, and CO₂ in HVAC ducts with wired RS-485 backhaul. IC Role / Device Role / Timing Role: Primary controller acquiring analog sensor data via 10-bit A/D, formatting packets via UART1, and maintaining accurate timestamps using Timer RE RTC. Use Value: -40°C to +85°C operating range ensures reliability in unconditioned mechanical rooms; low-power stop mode extends maintenance interval. |
| Office Equipment Motor Control | Automotive Body Electronics |
Use Scenario: Embedded controller in multifunction printer managing paper feed stepper motor, toner sensor, and panel buttons. IC Role / Device Role / Timing Role: Real-time motor sequencing via Timer RD PWM outputs, key interrupt handling (KI0–KI3), and UART0 debug interface. Use Value: 41 general-purpose I/O pins allow direct connection to motor drivers and optical encoders; 2 KB RAM supports buffer-intensive print job queuing. | Use Scenario: Seat position memory module communicating over LIN bus with vehicle body control unit. IC Role / Device Role / Timing Role: LIN protocol handler (hardware-accelerated), non-volatile parameter storage via flash, and analog potentiometer reading via A/D channels. Use Value: Hardware LIN reduces CPU overhead to <5% during frame transmission; D-version temperature rating matches automotive cabin requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21246SDFP#V2 | 32 KB flash, 2 KB RAM - +8 KB program memory, same peripherals and pinout | Required when firmware exceeds 24 KB or future-proofing for feature expansion | Select if additional code space is needed without changing PCB layout or driver software |
| R5F21255SDFP#V2 | R8C/25 Group part with 1 KB × 2 data flash blocks - adds EEPROM-like nonvolatile data storage | Suitable where frequent parameter logging or calibration data retention is required | Choose only if data flash functionality is essential; otherwise R5F21245SDFP#V2 offers lower cost and identical control capability |
Compared with R5F21246SDFP#V2, the R5F21245SDFP#V2 trades 8 KB flash for lower cost and smaller memory footprint; compared with R5F21255SDFP#V2, it omits data flash but delivers identical real-time control performance and LIN functionality at reduced complexity.
Availability
R5F21245SDFP#V2 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and office equipment motor control requiring stable component supply and long-term production continuity.
Supply support for R5F21245SDFP#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 industrial, automotive, and infrastructure markets.
The R8C/24 Group, including R5F21245SDFP#V2, was designed for cost-sensitive, low-to-mid complexity embedded control applications requiring robust analog integration, LIN connectivity, and extended temperature operation.
FAQ
What is the maximum operating frequency and corresponding supply voltage for R5F21245SDFP#V2?
The R5F21245SDFP#V2 achieves a minimum instruction execution time of 50 ns at 20 MHz, requiring VCC = 3.0 to 5.5 V. At 10 MHz, it operates down to VCC = 2.7 V, and at 5 MHz down to VCC = 2.2 V - enabling flexible power/performance trade-offs in battery-powered or wide-input designs.
Does R5F21245SDFP#V2 include on-chip debug support?
Yes, the R5F21245SDFP#V2 supports on-chip debugging via the single-wire debug interface using the RESET pin. This allows full breakpoint, step-through, and register inspection capability without requiring additional debug headers or pins beyond the standard reset function.
How many I/O pins does R5F21245SDFP#V2 provide, and which are dedicated to analog functions?
The R5F21245SDFP#V2 provides 41 general-purpose I/O pins and 3 dedicated input-only pins (P4_2, P4_6, P4_7). Of the I/O pins, P0_0 through P0_7, P1_0 through P1_3, and P1_5 are multiplexed with 12 analog input channels (AN0–AN11), supporting simultaneous analog acquisition across multiple sensors.
Is R5F21245SDFP#V2 pin-compatible with other members of the R8C/24 Group?
Yes, all R8C/24 Group devices in the 52-pin LQFP package (PLQP0052JA-A), including R5F21244SDFP#V2, R5F21245SDFP#V2, and R5F21246SDFP#V2, share identical pin assignments and electrical characteristics - enabling drop-in replacement based on memory requirements without PCB revision.
What LIN protocol versions does the hardware LIN module in R5F21245SDFP#V2 support?
The hardware LIN module in R5F21245SDFP#V2 supports LIN 2.0 and LIN 2.1 physical layer specifications, using UART0 and Timer RA for frame generation and synchronization. It handles automatic baud rate detection, checksum calculation, and slave node response timing per LIN specification without CPU intervention.
R5F21245SDFP#V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/2x/24
- 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:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
R5F21245SDFP#V2 FAQ
1.How can I place an order for R5F21245SDFP#V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21245SDFP#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 R5F21245SDFP#V2 reliable?
The price and inventory of R5F21245SDFP#V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21245SDFP#V2 is usually 5 days.
3.What payment methods are accepted for R5F21245SDFP#V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21245SDFP#V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21245SDFP#V2?
R5F21245SDFP#V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21245SDFP#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 R5F21245SDFP#V2?
For technical support, including R5F21245SDFP#V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21245SDFP#V2 requirements.
6.How does Aetrix verify that R5F21245SDFP#V2 is sourced from the original manufacturer or authorized distributors?
All R5F21245SDFP#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 R5F21245SDFP#V2 meets industry standards.
7.What is the process for return or replacement of R5F21245SDFP#V2?
All R5F21245SDFP#V2 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21245SDFP#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 R5F21245SDFP#V2 part is unused and in its original packaging.
Return procedure for R5F21245SDFP#V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21245SDFP#V2 Tags
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