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Renesas R5F21244SNFP#X6
- Part No.:
- R5F21244SNFP#X6
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F21244SNFP#X6.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,760
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Product details
Overview
R5F21244SNFP#X6 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/24 Group, featuring an R8C/Tiny Series CPU core, 16 KB flash program memory, 1 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 real-time clock functionality - deployed in consumer appliance control systems requiring compact, low-power embedded processing.
For engineers reviewing the R5F21244SNFP#X6 datasheet, R5F21244SNFP#X6 pinout, R5F21244SNFP#X6 application, or R5F21244SNFP#X6 equivalent, key selection criteria include its 52-pin LQFP package (PLQP0052JA-A), -20°C to +85°C operating range (N version), absence of on-chip data flash (distinguishing it from R8C/25 Group), and support for LIN bus communication via dedicated hardware.
Technical Context
The R5F21244SNFP#X6 implements the R8C/Tiny CPU core with 89 fundamental instructions and a 1 Mbyte address space. Its peripheral set includes Timer RA/RB (8-bit × 2), Timer RD (16-bit × 2 with input capture/output compare), and Timer RE with real-time clock and compare match - all synchronized to three independent clock sources: XIN (up to 20 MHz), high-speed on-chip oscillator (frequency-adjustable), and XCIN (32 kHz).
It supports mixed-signal operation with AVCC/AVSS power domains, VREF-referenced 10-bit A/D conversion across 12 analog inputs, and programmable I/O direction per pin. The MCU operates in single-chip mode with on-chip power-on reset, voltage detection, and oscillation stop detection - enabling robust operation in cost-sensitive, non-automotive embedded applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit architecture with 89 instructions and 1 Mbyte address space - enables efficient C-language execution and deterministic real-time response. |
| Memory | 16 KB flash program ROM + 1 KB RAM - sufficient for mid-complexity firmware in home appliances and office equipment without external memory. |
| Operating Speed | 20 MHz max (50 ns min instruction time at VCC = 3.0–5.5 V) - balances performance and power efficiency for battery-backed or AC-powered consumer devices. |
| Analog Interface | 10-bit A/D converter with 12 input channels and dedicated VREF pin - supports precise sensor monitoring (e.g., temperature, light, motor current) without external reference. |
| Serial Peripherals | 2 UART channels (UART0/UART1), 1 I²C interface, 1 clock-synchronous serial I/O with chip select, and hardware LIN (via Timer RA + UART0) - enables multi-protocol communication with displays, sensors, and automotive-grade modules. |
| Timers | Timer RA/RB (8-bit × 2), Timer RD (16-bit × 2 with input capture/output compare), Timer RE (real-time clock + compare match) - provides flexible timing, PWM generation, pulse measurement, and calendar-based wake-up. |
| Supply & Temp | VCC = 2.2–5.5 V; operating ambient: -20°C to +85°C (N version) - suitable for indoor consumer electronics without extended industrial or automotive thermal requirements. |
Pinout & Package
Package: 52-pin molded-plastic LQFP (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pin pitch. Pinout conforms to Figure 1.4 in REJ03B0117-0300 Rev.3.00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply / Analog reference | Main digital supply (2.2–5.5 V); AVCC powers A/D converter - requires separate decoupling from VCC to minimize noise coupling into analog measurements. |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU and initializes peripherals - must be held low ≥100 ns after power stabilization for reliable boot. |
| XIN / XOUT | Crystal/resonator interface | Supports external 20 MHz crystal or ceramic resonator; internal feedback resistor eliminates need for external components in basic configurations. |
| XCIN / XCOUT | 32 kHz real-time clock source | Connects to 32.768 kHz crystal for Timer RE - enables low-power wait/stop modes with accurate timekeeping independent of main system clock. |
| P0_0–P0_7 | Analog input / General I/O | 12-bit-capable analog inputs AN0–AN7; configurable as CMOS I/O with software-selectable pull-up - used for sensor interfacing and button scanning. |
| INT0–INT3 | External interrupt inputs | Dedicated pins for edge-triggered interrupts (e.g., INT0 tied to Timer RD input); supports priority-level arbitration across 7 levels. |
| TXD0 / RXD0 | UART0 data output / input | Full-duplex asynchronous serial interface - used for host debugging, display control, or inter-MCU communication at configurable baud rates. |
| SCL / SDA | I²C bus clock / data | Open-drain, bidirectional signals compliant with standard-mode I²C (100 kbps) - interfaces with EEPROMs, temperature sensors, and other slave peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/SAE J2602 support via Timer RA and UART0 - eliminates external transceiver for basic LIN node implementation in appliance sub-systems. |
| Low-Power Operation | 0.7 µA typical in stop mode (VCC = 3.0 V, f(XCIN) = 32 kHz) - enables battery-backed real-time clock and wake-on-interrupt functionality for energy-constrained designs. |
| On-Chip Oscillators | High-speed (adjustable) and low-speed (32 kHz) on-chip oscillators - reduces BOM cost and board space by minimizing external timing components. |
| LED Drive Capability | P2_0–P2_7 double as LED drive ports with enhanced sink current - drives common-cathode indicators directly without external drivers in user interface subsystems. |
| Interrupt Architecture | 11 internal + 5 external + 4 software interrupt sources with 7 priority levels - supports responsive event handling in multi-tasking firmware without polling overhead. |
Applications
| Home Appliance Control | Office Equipment Monitoring |
|---|---|
Use Scenario: Embedded controller in microwave oven or washing machine managing keypad input, display, motor sequencing, and temperature sensing. IC Role / Device Role / Timing Role: Primary system MCU executing real-time motor control loops, reading 12-channel ADC for thermistor arrays, and driving LED indicators via P2 ports. Use Value: Integrated LIN and UART enable communication with display modules and remote diagnostics; low-power stop mode extends battery life in backup clock circuits. |
Use Scenario: Firmware engine in multifunction printer handling paper jam detection, toner level reporting, and USB-to-parallel bridge logic. IC Role / Device Role / Timing Role: Peripheral coordinator using UART1 for host PC communication, I²C for EEPROM configuration storage, and Timer RD for precise pulse-width measurement of encoder signals. Use Value: On-chip 10-bit ADC eliminates external converters for analog sensor inputs; 16 KB flash accommodates field-upgradable feature sets without external memory. |
| Audio System Remote Interface | Consumer IoT Sensor Hub |
Use Scenario: IR remote receiver and command decoder in stereo amplifier or soundbar, translating NEC/RC-5 protocols into volume/tone adjustments. IC Role / Device Role / Timing Role: Interrupt-driven signal processor using INT0 for IR carrier edge detection, Timer RA for pulse width timing, and P1_0–P1_3 for key input scanning. Use Value: Hardware LIN allows daisy-chained control of multiple audio zones; high-speed 20 MHz operation ensures sub-millisecond response to user commands. |
Use Scenario: Central node aggregating data from environmental sensors (temperature, humidity, motion) and transmitting via UART to Wi-Fi module. IC Role / Device Role / Timing Role: Data concentrator using ADC channels for analog sensors, UART0 for serial telemetry, and Timer RE for periodic sampling intervals with RTC wake-up. Use Value: 1 KB RAM buffers sensor readings during wireless transmission gaps; 0.7 µA stop mode extends coin-cell battery life to >1 year in always-on monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21245SNFP | 24 KB flash, 2 KB RAM - same package, peripherals, and clock architecture as R5F21244SNFP#X6. | Required when firmware exceeds 16 KB or additional RAM is needed for larger buffers or RTOS stacks. | Select R5F21245SNFP if future firmware growth or enhanced data logging is anticipated; pin-compatible upgrade path with no PCB changes. |
| R5F21254SNFP | R8C/25 Group variant with 1 KB × 2 data flash blocks - adds EEPROM-like nonvolatile storage for calibration or user settings. | Needed where field-programmable parameter retention (e.g., motor tuning values) is required between power cycles. | Choose R5F21254SNFP only if data flash functionality is essential; differs in flash endurance spec (10,000 write cycles vs. 1,000 for program ROM) and requires modified programming flow. |
Compared with R5F21245SNFP and R5F21254SNFP, the R5F21244SNFP#X6 offers optimal cost/performance balance for fixed-function appliances with stable firmware and no runtime parameter storage needs - delivering full R8C peripheral capability in the smallest memory footprint of the N-version 52-pin LQFP family.
Availability
R5F21244SNFP#X6 is available at Aetrix Electronics and suitable for home appliance control, office equipment monitoring, and consumer audio interface applications requiring stable component supply and long-term production continuity.
Supply support for R5F21244SNFP#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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and consumer markets.
The R8C/24 Group, including R5F21244SNFP#X6, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of analog peripherals, communication interfaces, and real-time capabilities in compact packages.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F21244SNFP#X6?
The R5F21244SNFP#X6 supports a maximum operating frequency of 20 MHz at VCC = 3.0–5.5 V, with minimum instruction execution time of 50 ns. At lower frequencies (10 MHz, 5 MHz), it operates down to 2.7 V and 2.2 V respectively - enabling flexible power supply design across AC adapter and battery-powered applications.
Does R5F21244SNFP#X6 include on-chip data flash memory?
No, R5F21244SNFP#X6 belongs to the R8C/24 Group and contains only program flash memory (16 KB) and RAM (1 KB). It does not include the 1 KB × 2 data flash blocks found in R8C/25 Group variants like R5F21254SNFP - making it suitable for applications with static firmware and no runtime parameter storage requirements.
Which package type and pin count does R5F21244SNFP#X6 use?
R5F21244SNFP#X6 uses the PLQP0052JA-A package: a 52-pin molded-plastic LQFP with 10 mm × 10 mm body and 0.65 mm pin pitch. This matches the pinout shown in Figure 1.4 of the official datasheet REJ03B0117-0300, confirming mechanical and electrical compatibility with standard 52-pin LQFP footprints.
Can R5F21244SNFP#X6 operate in low-power modes, and what are the typical current draws?
Yes, R5F21244SNFP#X6 supports wait and stop modes. Typical current consumption is 2.0 µA in wait mode (VCC = 3.0 V, f(XCIN) = 32 kHz) and 0.7 µA in stop mode - enabling ultra-low-power operation for battery-backed real-time clock and wake-on-interrupt functions in portable or energy-harvesting designs.
What communication interfaces are integrated into R5F21244SNFP#X6?
R5F21244SNFP#X6 integrates two UART channels (UART0, UART1), one I²C bus interface, one clock-synchronous serial I/O with chip select, and a hardware LIN module implemented using Timer RA and UART0 - providing native support for industrial, automotive, and consumer serial protocols without external protocol translators.
R5F21244SNFP#X6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/2x/24
- 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:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- 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:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21244SNFP#X6 FAQ
1.How can I place an order for R5F21244SNFP#X6 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21244SNFP#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 R5F21244SNFP#X6 reliable?
The price and inventory of R5F21244SNFP#X6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21244SNFP#X6 is usually 5 days.
3.What payment methods are accepted for R5F21244SNFP#X6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21244SNFP#X6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21244SNFP#X6?
R5F21244SNFP#X6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21244SNFP#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 R5F21244SNFP#X6?
For technical support, including R5F21244SNFP#X6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21244SNFP#X6 requirements.
6.How does Aetrix verify that R5F21244SNFP#X6 is sourced from the original manufacturer or authorized distributors?
All R5F21244SNFP#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 R5F21244SNFP#X6 meets industry standards.
7.What is the process for return or replacement of R5F21244SNFP#X6?
All R5F21244SNFP#X6 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21244SNFP#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 R5F21244SNFP#X6 part is unused and in its original packaging.
Return procedure for R5F21244SNFP#X6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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