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Renesas R5F2L368CDFA#31
- Part No.:
- R5F2L368CDFA#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F2L368CDFA#31.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,371
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Product details
Overview
R5F2L368CDFA#31 from Renesas is an 8-bit R8C/L36C Group microcontroller featuring the R8C CPU core, 64 KB flash program memory, 8 KB RAM, and 1 KB × 4 data flash with background operation (BGO). It delivers 50 ns minimum instruction execution at 20 MHz, integrates a 16×16-bit multiplier, and supports LCD drive (up to 8 COM / 32 SEG), 10-bit ADC (10 channels), dual D/A converters, LIN hardware interface, and low-power modes - designed for cost-sensitive, display-integrated consumer control applications.
For engineers reviewing the R5F2L368CDFA#31 datasheet, R5F2L368CDFA#31 pinout, R5F2L368CDFA#31 application, or R5F2L368CDFA#31 equivalent, key selection criteria include its 64-pin LQFP (0.80 mm pitch) package, -40°C to +85°C industrial temperature grade, integrated LCD controller with VL1–VL4 bias pins and CL1/CL2 clock inputs, and hardware LIN channel using Timer RA and UART0.
Technical Context
The R5F2L368CDFA#31 implements the R8C CPU core with 89 fundamental instructions and a dedicated 16×16→32-bit multiplier supporting multiply-accumulate operations. Its system clock architecture includes four independent sources: XIN oscillator (up to 20 MHz), 32 kHz XCIN crystal circuit, high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all selectable via software and supported by oscillation stop detection and programmable frequency division (1/2/4/8/16).
Peripheral integration centers on mixed-signal control: Timer RD provides three-phase PWM generation (6-pin complementary/synchronous output), Timer RC and RG support PWM and input capture, UART0/1/2 offer UART/I²C/SSU modes, and the DTC enables autonomous data transfers triggered by 38 sources. The device uses a single-chip mode with 1 Mbyte address space and includes voltage detection (power-on reset + dual-level VDD monitoring).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 8-bit core with 89 instructions, 50 ns min. instruction time at 20 MHz |
| Memory | 64 KB flash ROM, 8 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO |
| ADC | 10-bit resolution × 10 channels with sample-and-hold and sweep mode |
| LCD Driver | Up to 8 common outputs and 32 segment outputs; supports 1/2, 1/3, 1/4 bias and static/1/2/1/3/1/4/1/8 duty |
| Operating Temp | -40°C to +85°C (D version), validated for industrial ambient conditions |
| Package | 64-pin LQFP, 0.80 mm pin pitch (PLQP0064GA-A) |
| Power Modes | Standard, wait (3.5 µA @ 32 kHz), stop (2 µA), power-off (0.02 µA) |
Pinout & Package
64-pin LQFP package (PLQP0064GA-A, 0.80 mm pitch), RoHS-compliant, with exposed thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Programmable I/O / SEG0–SEG7 / AN4–AN9 | 8-bit port supporting LCD segment drive, analog input, and general-purpose digital I/O with selectable pull-up |
| P7_0–P7_7 | Programmable I/O / SEG52–SEG55 / COM0–COM7 | 8-bit port providing up to 4 common outputs (COM0–COM3) and 4 extended COM/SEG functions (COM4–COM7, SEG52–SEG55) |
| P11_0–P11_7 | Programmable I/O / SCL/SSI/SDA/TRAIO/TRBO/TREO | 8-bit port with I²C, SPI, UART, LIN trigger, and timer output functions - multiplexed per register configuration |
| VL1–VL4 | LCD bias voltage supply pins | Dedicated pins for external or internal LCD voltage multiplier connection; enable 1/2–1/4 bias configurations |
| CL1, CL2 | LCD clock inputs | Accept external clock signals to drive LCD timing; required for static/1/2/1/3/1/4/1/8 duty operation |
| XIN, XOUT | Primary crystal oscillator terminals | Support external crystal (1–20 MHz) or ceramic resonator; essential for high-precision timing and full-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent program/data flash erase/write and CPU execution - critical for firmware updates without halting real-time control |
| Hardware LIN Module | Full LIN 2.1/SAE J2602 compliance using UART0 and Timer RA; eliminates software bit-banging overhead and ensures protocol timing accuracy |
| Low-Power Stop Mode | 2 µA typical current draw at 3.0 V with RTC active - extends battery life in always-on display or sensor nodes |
| Integrated Voltage Detection | Dual-level VDD monitor (VDD1/VDD2) with programmable thresholds and interrupt capability - prevents erratic operation during brown-out conditions |
| High-Current Drive Ports | 8 pins capable of 20 mA sink/source - directly drive LEDs, small relays, or LCD backlights without external drivers |
Applications
| Refrigerator Control Panel | Office Multi-Function Printer UI |
|---|---|
Use Scenario: Real-time monitoring of temperature sensors, keypad input scanning, and segmented LCD display of status, settings, and alerts. IC Role / Device Role / Timing Role: Central control unit managing sensor acquisition, user interface logic, LCD refresh timing, and LIN communication to compressor/inverter modules. Use Value: Integrated LCD driver (32 SEG/8 COM) and 10-channel ADC eliminate external display controllers and analog front-ends; BGO enables seamless field firmware updates. | Use Scenario: Coordinating paper feed sensors, toner level reporting, button presses, and multi-line dot-matrix LCD status display in compact office printers. IC Role / Device Role / Timing Role: Primary UI controller handling parallel sensor polling, debounced key scan, static/1/3-duty LCD driving, and UART-based host communication. Use Value: Hardware LIN module interfaces with motor drivers; 8 high-current I/O pins drive indicator LEDs directly; -40°C to +85°C rating ensures reliability in uncontrolled office environments. |
| Audio System Front Panel | Home Appliance Keypad Interface |
Use Scenario: Managing rotary encoder input, volume/mute controls, source selection buttons, and 4-digit 7-segment or custom LCD display in AV receivers. IC Role / Device Role / Timing Role: Dedicated UI MCU offloading main audio processor; handles real-time key debounce, LED dimming PWM, and LCD segment mapping. Use Value: Dual 8-bit D/A converters generate analog reference voltages for LED current control; Timer RB provides precise PWM dimming independent of CPU load. | Use Scenario: Scanning membrane keypad matrix, reading thermistor-based temperature feedback, driving vacuum fluorescent or LCD display, and controlling relay outputs in microwave ovens or washing machines. IC Role / Device Role / Timing Role: Embedded system controller executing safety-critical timing sequences, monitoring door switches, and managing display refresh synchronized to mains frequency. Use Value: On-chip voltage detection prevents unsafe operation during voltage sags; 64-pin package accommodates full keypad scan lines and isolated relay drive outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L368CNFA#30 | N-version (-20°C to +85°C); identical memory, peripherals, and pinout | Suitable only for commercial indoor environments without thermal stress | Select when operating ambient stays above -20°C and cost sensitivity outweighs industrial qualification |
| R5F2L388CDFA#30 | D-version with 16-channel ADC, 48-segment LCD drive, and 80-pin LQFP package | Required for designs needing >10 analog inputs or >32 LCD segments | Choose when expanding analog sensing or display complexity beyond R5F2L368CDFA#31 capabilities |
Compared with R5F2L368CNFA#30, the R5F2L368CDFA#31 adds industrial temperature resilience without peripheral trade-offs; versus R5F2L388CDFA#30, it offers identical D-grade reliability in a smaller 64-pin footprint at lower cost - optimal for fixed-feature, space-constrained display controllers.
Availability
R5F2L368CDFA#31 is available at Aetrix Electronics and suitable for refrigerator control panels, office printer UIs, audio front panels, and home appliance keypads requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for R5F2L368CDFA#31 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 automotive, industrial, and IoT markets.
The R8C/L36C Group targets cost-optimized, display-centric embedded systems - delivering integrated LCD control, analog sensing, and communication interfaces in compact packages for consumer and white-goods applications.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F2L368CDFA#31?
The R5F2L368CDFA#31 operates at up to 20 MHz when supplied at 2.7–5.5 V, and supports reduced-frequency operation down to 5 MHz at 1.8–5.5 V. Its minimum instruction execution time is 50 ns under 20 MHz/5.0 V conditions, enabling responsive real-time control in display and sensor applications where the R5F2L368CDFA#31 serves as the primary system controller.
Does the R5F2L368CDFA#31 support hardware LIN communication, and how is it implemented?
Yes, the R5F2L368CDFA#31 includes a dedicated hardware LIN module compliant with LIN 2.1 and SAE J2602 standards. It uses UART0 for serial framing and Timer RA for precise baud rate generation and synchronization - eliminating software-based bit-banging and ensuring robust communication with motors, sensors, or displays in automotive and appliance networks where the R5F2L368CDFA#31 acts as a LIN slave node.
How many LCD segment and common outputs does the R5F2L368CDFA#31 support, and what bias/duty options are available?
The R5F2L368CDFA#31 supports up to 32 segment outputs and 8 common outputs, with configurable bias (1/2, 1/3, 1/4) and duty (static, 1/2, 1/3, 1/4, 1/8) modes. This enables direct drive of alphanumeric or custom segment displays in appliances and office equipment - a key capability distinguishing the R5F2L368CDFA#31 from non-LCD MCUs in the R8C family.
What low-power modes are available on the R5F2L368CDFA#31, and what is the typical current consumption in stop mode?
The R5F2L368CDFA#31 offers wait, stop, and power-off modes. In stop mode at 3.0 V with 32 kHz sub-clock active, typical current consumption is 2 µA - sufficient to maintain real-time clock operation while minimizing battery drain in always-on display or sensor nodes where the R5F2L368CDFA#31 manages periodic wake-up events.
Is background operation (BGO) supported for data flash writes on the R5F2L368CDFA#31, and what is its practical benefit?
Yes, the R5F2L368CDFA#31 supports background operation (BGO) for data flash, allowing simultaneous CPU code execution and flash erase/write cycles. This enables safe, uninterrupted firmware updates, parameter storage, or calibration data logging in field-deployed devices - a critical feature for maintaining system responsiveness in applications where the R5F2L368CDFA#31 serves as the sole controller.
R5F2L368CDFA#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- R8C/Lx/36C
- 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:
- LCD, POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 10x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L368CDFA#31 FAQ
1.How can I place an order for R5F2L368CDFA#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L368CDFA#31 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 R5F2L368CDFA#31 reliable?
The price and inventory of R5F2L368CDFA#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L368CDFA#31 is usually 5 days.
3.What payment methods are accepted for R5F2L368CDFA#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L368CDFA#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L368CDFA#31?
R5F2L368CDFA#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L368CDFA#31 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 R5F2L368CDFA#31?
For technical support, including R5F2L368CDFA#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L368CDFA#31 requirements.
6.How does Aetrix verify that R5F2L368CDFA#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L368CDFA#31 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 R5F2L368CDFA#31 meets industry standards.
7.What is the process for return or replacement of R5F2L368CDFA#31?
All R5F2L368CDFA#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L368CDFA#31, 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 R5F2L368CDFA#31 part is unused and in its original packaging.
Return procedure for R5F2L368CDFA#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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