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Renesas R5F2L368CNFP#31
- Part No.:
- R5F2L368CNFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F2L368CNFP#31.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,160
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Product details
Overview
R5F2L368CNFP#31 from Renesas is an 8-bit R8C/L36C Group microcontroller featuring the R8C CPU core, 64 KB flash program memory, 1 KB × 4 data flash with background operation (BGO), and 8 KB RAM. 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 pins) for appliance control panels.
For engineers reviewing the R5F2L368CNFP#31 datasheet, R5F2L368CNFP#31 pinout, R5F2L368CNFP#31 application, or R5F2L368CNFP#31 equivalent, key selection criteria include its 64-pin LQFP package, 10-bit × 10-channel ADC, integrated LIN module (using timer RA and UART0), and support for -20°C to +85°C ambient operation (N version).
Technical Context
The R5F2L368CNFP#31 implements the R8C CPU core with 89 fundamental instructions and operates in single-chip mode over a 1 Mbyte address space. Its clock system includes XIN/XOUT (20 MHz max), XCIN/XCOUT (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all selectable via software-controlled frequency divider (1/2/4/8/16).
Peripheral integration includes Timer RA (8-bit, pulse output), Timer RB (8-bit, PWM), Timer RC (16-bit, 3-pin PWM), Timer RD (16-bit × 2, 6-pin reset-synchronous/complementary PWM), Timer RE (real-time clock), and Timer RG (16-bit, phase-counting/PWM). Serial interfaces comprise UART0/UART1, UART2 with I²C-bus mode, SSU, and hardware LIN (1 channel).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 8-bit core with 89 instructions, 1 Mbyte address space, 16×16→32-bit multiplier |
| Flash Memory | 64 KB program ROM + 4 KB data flash (1 KB × 4 blocks) with BGO and 10,000 erase cycles |
| RAM | 8 KB internal RAM for variables, stack, and buffer storage |
| ADC | 10-bit resolution × 10 channels with sample-and-hold and sweep mode |
| LCD Driver | Supports up to 8 common outputs and 32 segment outputs; bias: 1/2, 1/3, 1/4; duty: static, 1/2–1/8 |
| Operating Voltage | 1.8 V to 5.5 V supply range; 20 MHz operation supported at VCC ≥ 2.7 V |
| Power Modes | Standard, wait (3.5 µA @ 32 kHz), stop (2 µA), power-off (0.02 µA) |
Pinout & Package
Package: 64-pin LQFP (PLQP0064KB-A, 0.50 mm pitch), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0 to 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 pull-up select |
| P11_0 to P11_7 | Programmable I/O / SCL/SSCK/SSI/SDA/TRAO/TRBO/TREO | 8-bit port with I²C, SPI, UART2, and timer output functions; enables multi-protocol serial communication |
| P13_0, P13_1 | AN0/DA0, AN1/DA1/TXD0 | Dual-function pins for 10-bit ADC input and 8-bit DAC output (2 channels), plus UART0 transmit |
| XIN / XOUT | External crystal oscillator input/output | Supports 20 MHz crystal for precise timing; required for full-speed operation and EMI-optimized clock generation |
| VL1–VL4, CL1, CL2 | LCD bias voltage and clock inputs | Integrated LCD power supply control enabling 1/4-bias operation and flexible duty-cycle configuration (1/2–1/8) |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash rewriting while executing application code - enables firmware updates without halting system operation |
| Hardware LIN Module | Full LIN 2.1/SAE J2602 compliance using dedicated UART0 and timer RA resources - eliminates software protocol overhead |
| Low-Power Wait Mode | 3.5 µA typical current at 3.0 V with 32 kHz sub-clock active - ideal for battery-backed real-time monitoring |
| On-Chip Debug Interface | Fully integrated debug circuit supporting breakpoints, watchpoints, and flash programming via single-wire interface |
| High-Current Drive Ports | 8 pins capable of 20 mA sink/source - directly drives LEDs, relays, or small solenoids without external drivers |
Applications
| Appliance Control Panel | Industrial HMI Terminal |
|---|---|
Use Scenario: Embedded controller for microwave oven or washing machine front panel with segmented LCD display and keypad interface. IC Role / Device Role / Timing Role: MCU managing user input scanning, LCD segment driving (32 SEG / 8 COM), real-time clock (Timer RE), and motor control via PWM outputs (Timer RD). Use Value: Integrated LCD driver and 10-channel ADC eliminate external display controllers and analog front-ends, reducing BOM count by ≥3 components. | Use Scenario: Standalone operator interface for PLC-connected machinery with local status display and fault logging. IC Role / Device Role / Timing Role: Primary controller handling UART-based Modbus RTU communication (UART1), non-volatile event logging to data flash, and LED/status indicator PWM dimming. Use Value: Background operation (BGO) allows firmware updates and parameter changes during runtime without interrupting fieldbus communication. |
| Home Audio System Remote | Smart Thermostat Node |
Use Scenario: IR remote control unit with LCD feedback, button matrix scan, and IR carrier generation. IC Role / Device Role / Timing Role: MCU executing IR modulation (via Timer RB PWM), scanning 8×4 keypad (P0–P3), and driving 24-segment LCD using VL/CL bias circuitry. Use Value: On-chip high-speed oscillator eliminates need for external crystal, reducing component count and PCB area by 20% vs. crystal-dependent alternatives. | Use Scenario: Battery-powered HVAC sensor node with temperature/humidity sensing, LCD display, and wireless module wake-up control. IC Role / Device Role / Timing Role: Low-power manager using stop mode (2 µA), ADC sampling of analog sensors, and wake-up via external interrupt (INT0–INT7) or RTC alarm (Timer RE). Use Value: Sub-µA power-off mode (0.02 µA) extends CR2032 battery life to >5 years in intermittent-sampling applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L368CNFA#31 | Same core, memory, and peripherals; differs only in package (64-pin LQFP, 0.80 mm pitch vs. 0.50 mm) | Requires PCB layout revision due to larger pad pitch; identical firmware compatibility | Select when legacy board design uses 0.80 mm pitch footprint or requires mechanical compatibility with older Renesas LQFP modules |
| R5F2L388CNFP#31 | Higher I/O count (68 pins), 16-channel ADC, 48-segment LCD drive, and additional Timer RD capture/compare registers | Supports larger displays and more sensor inputs; occupies 80-pin LQFP footprint | Choose when scaling beyond 10 ADC channels or requiring >32 LCD segments - no firmware porting needed due to architectural compatibility |
Compared with R5F2L368CNFP#31, R5F2L368CNFA#31 offers identical functionality in a mechanically distinct package, while R5F2L388CNFP#31 extends peripheral capability for higher-complexity HMI designs - both maintain binary-compatible instruction set and register mapping.
Availability
R5F2L368CNFP#31 is available at Aetrix Electronics and suitable for appliance control panels, industrial HMIs, home audio remotes, and smart thermostat nodes requiring stable component supply across extended production lifecycles.
Supply support for R5F2L368CNFP#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-sensitive, low-power embedded applications requiring integrated LCD driving, analog sensing, and LIN communication - optimized for consumer and white-goods control systems.
FAQ
What is the maximum operating frequency and voltage range for the R5F2L368CNFP#31?
The R5F2L368CNFP#31 supports a maximum operating frequency of 20 MHz at supply voltages from 2.7 V to 5.5 V. At lower voltages (1.8 V to 5.5 V), it operates up to 5 MHz. This dual-voltage/frequency specification enables flexible power-performance trade-offs in battery-powered and line-powered designs. The R5F2L368CNFP#31 maintains full peripheral functionality across this range, including ADC accuracy and LCD bias stability.
Does the R5F2L368CNFP#31 support hardware LIN communication?
Yes, the R5F2L368CNFP#31 integrates a dedicated hardware LIN module compliant with LIN 2.1 and SAE J2602 standards. It uses UART0 and timer RA resources to generate accurate baud rates and handle protocol framing without CPU intervention. This offloads LIN messaging tasks from firmware, ensuring deterministic timing and freeing the R5F2L368CNFP#31 CPU for application logic - critical for real-time appliance control.
How many LCD segment and common pins does the R5F2L368CNFP#31 support?
The R5F2L368CNFP#31 supports up to 32 segment output pins and 8 common output pins for LCD driving. This configuration enables static or multiplexed displays up to 1/8 duty cycle with 1/2, 1/3, or 1/4 bias. The integrated VL1–VL4 voltage supply pins and CL1/CL2 clock inputs allow direct connection to LCD glass without external bias generators - a key differentiator for space-constrained appliance UIs.
What debug capabilities are built into the R5F2L368CNFP#31?
The R5F2L368CNFP#31 includes an on-chip debug interface supporting breakpoints, watchpoints, single-stepping, and flash programming via a single-wire interface. It enables full source-level debugging without requiring external emulators. The R5F2L368CNFP#31 debug circuit is accessible through standard Renesas E1/E20 debuggers and integrates seamlessly with CS+ and e2 studio IDEs for rapid firmware development and validation.
Can the R5F2L368CNFP#31 perform flash reprogramming during normal operation?
Yes, the R5F2L368CNFP#31 supports background operation (BGO) for data flash, allowing rewrite operations on its 4 KB data flash (1 KB × 4 blocks) while simultaneously executing application code from program ROM. This capability enables field firmware updates, parameter storage, and logging without system interruption - essential for maintaining uptime in deployed appliances and industrial controls.
R5F2L368CNFP#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:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L368CNFP#31 FAQ
1.How can I place an order for R5F2L368CNFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L368CNFP#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 R5F2L368CNFP#31 reliable?
The price and inventory of R5F2L368CNFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L368CNFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L368CNFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L368CNFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L368CNFP#31?
R5F2L368CNFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L368CNFP#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 R5F2L368CNFP#31?
For technical support, including R5F2L368CNFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L368CNFP#31 requirements.
6.How does Aetrix verify that R5F2L368CNFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L368CNFP#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 R5F2L368CNFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L368CNFP#31?
All R5F2L368CNFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L368CNFP#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 R5F2L368CNFP#31 part is unused and in its original packaging.
Return procedure for R5F2L368CNFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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