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Renesas R5F2L368CNFA#31
- Part No.:
- R5F2L368CNFA#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F2L368CNFA#31.pdf
- Description:
- 16BIT MCU R8C/L36C ROM64K/RAM8K
- Quantity:
- Payment:
- Shipping:
Inventory:2,860
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Product details
Overview
R5F2L368CNFA#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 operates at up to 20 MHz (VCC = 2.7–5.5 V), supports 52 programmable I/O pins including 8 high-current drive ports, and integrates LCD drive control (max 8 COM / 32 SEG), 10-bit × 10-channel ADC, dual 8-bit DACs, and hardware LIN via UART0 + Timer RA - deployed in appliance control panels requiring integrated display and sensor interfacing.
For engineers reviewing the R5F2L368CNFA#31 datasheet, R5F2L368CNFA#31 pinout, R5F2L368CNFA#31 application, or R5F2L368CNFA#31 equivalent, key selection criteria include its 64-pin LQFP-0.80 mm pitch package, -20°C to +85°C N-version temperature grade, 10-bit ADC sweep mode, BGO-enabled data flash reprogramming during runtime, and dedicated LCD bias circuitry supporting 1/2, 1/3, and 1/4 bias with static/1/2/1/3/1/4/1/8 duty options.
Technical Context
The R5F2L368CNFA#31 implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit hardware multiplier, enabling efficient real-time control loops. Its system clock generation includes four independent circuits: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all selectable via software for dynamic power management across wait, stop, and power-off modes.
Peripheral integration centers on mixed-signal timing and interface functions: Timer RD provides three-phase complementary PWM (6-pin output) and reset-synchronous PWM; UART2 supports I²C-bus mode and multiprocessor communication; and the DTC enables autonomous data transfers from 38 activation sources without CPU intervention - critical for deterministic sensor acquisition and display refresh in resource-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 8-bit core with 16×16→32-bit multiplier and 89-instruction set; enables fast math-intensive tasks like motor commutation or sensor linearization. |
| Memory | 64 KB flash program ROM + 4 KB data flash (1 KB × 4 blocks, BGO-capable) + 8 KB RAM; allows field firmware updates without halting application execution. |
| Operating Speed | 20 MHz max (VCC = 2.7–5.5 V); minimum instruction time 50 ns - suitable for real-time response in appliance UI and motor control. |
| I/O & LCD | 52 programmable CMOS I/O pins (8 high-current drive), 8 COM / 32 SEG LCD driver with integrated voltage multiplier and bias/duty configurability. |
| Analog Peripherals | 10-bit resolution × 10-channel ADC with sample-and-hold and sweep mode; 8-bit × 2-channel DAC; 2 comparator B units - supports multi-sensor monitoring and analog feedback. |
| Timers & Serial | Timer RD (16-bit × 2, 6-pin PWM), Timer RG (16-bit phase-counting), UART0/1/2 (I²C mode on UART2), SSU, LIN module - enables motor control, display comms, and automotive-grade bus interfacing. |
| Power Management | Typ. 7 mA active (5 V, 20 MHz), 3.5 µA wait mode (3 V, 32 kHz), 2 µA stop mode, 0.02 µA power-off - extends battery life in portable or energy-sensitive designs. |
Pinout & Package
Package: 64-pin LQFP (PLQP0064GA-A), 0.80 mm pin pitch, exposed pad not specified, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0 to P0_7 | SEG0–SEG7 / AN4–AN9 | Segment outputs for LCD; also serve as analog inputs for ADC channels 4–9 - shared function simplifies PCB routing in display-integrated controls. |
| P7_0 to P7_7 | SEG52–SEG55 / COM0–COM3 | High-drive segment/common outputs supporting up to 1/8-duty LCD multiplexing - enables compact 4-digit alphanumeric displays with minimal external components. |
| P11_0 to P11_7 | SCL/SSCK, SSI, SDA/SSO, TRAIO, TREO, TRBO, TRAO | Multi-function pins for I²C, SPI, UART2, and timer output capture - permits flexible peripheral assignment without pin conflicts in constrained layouts. |
| XIN / XOUT | External crystal oscillator input/output | Supports precision timing reference up to 20 MHz; internal oscillator fallback ensures operation if crystal fails - improves system robustness. |
| VL1–VL4, CL1, CL2 | LCD bias and clock supply | Dedicated pins for LCD voltage multiplier and bias control - eliminates need for external charge pumps or regulators in display subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash reprogramming while application code executes - enables seamless over-the-air updates in connected appliances without service interruption. |
| Integrated LCD Driver | Hardware support for 1/2–1/4 bias and static–1/8 duty; built-in voltage multiplier reduces BOM count by eliminating external LCD bias ICs. |
| Hardware LIN Module | Full LIN 2.1 compliance using UART0 and Timer RA - delivers certified automotive sub-network communication without software protocol stack overhead. |
| DTC (Data Transfer Controller) | Single-channel DMA with 38 activation sources - offloads ADC sampling, UART buffering, and LCD RAM refresh from CPU, freeing cycles for control algorithms. |
| Voltage Detection Circuit | Configurable power-on reset and dual-level voltage detection (VDD monitor) - prevents erratic behavior during brown-out conditions in unregulated power supplies. |
Applications
| Appliance Control Panel | Industrial HMI Display |
|---|---|
|
Use Scenario: Embedded controller for microwave oven or washing machine front panel with 4-digit LCD, keypad, and temperature/speed sensors. IC Role / Device Role / Timing Role: Central MCU managing LCD refresh, key scan, ADC-based sensor reading, and relay/motor driver control via GPIO and PWM. Use Value: Integrated LCD driver and 10-channel ADC eliminate external drivers and signal conditioners; BGO enables field-upgradable UI logic without halting appliance operation. |
Use Scenario: Standalone operator interface for PLC-connected machinery with segmented LCD, status LEDs, and serial diagnostics port. IC Role / Device Role / Timing Role: Dedicated HMI processor handling display rendering, button debouncing, UART-based Modbus RTU communication, and watchdog supervision. Use Value: Hardware LIN and UART2-I²C capability allow direct connection to industrial networks; 8 high-current I/O pins drive LEDs and indicators without external transistors. |
| Consumer Audio Remote | Smart Thermostat Interface |
|
Use Scenario: IR remote control with backlit LCD, battery monitoring, and button matrix scanning for AV receivers or soundbars. IC Role / Device Role / Timing Role: Low-power MCU executing IR encoding, LCD contrast control, and ADC-based battery voltage measurement in periodic wake-up mode. Use Value: 2 µA stop mode and 0.02 µA power-off current extend coin-cell life; integrated DAC drives LCD backlight dimming without PWM filtering components. |
Use Scenario: Wall-mounted HVAC controller with 2-line character LCD, ambient temperature/humidity sensing, and wireless module interface. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating ADC readings, driving LCD segments, managing real-time clock (Timer RE), and communicating with Wi-Fi/BLE module via UART. Use Value: Real-time clock with seconds/minutes/hours/day-of-week counters enables accurate scheduling; 10-bit ADC sweep mode captures multiple sensor values in one trigger cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L368CNFP#30 | Same core, memory, and peripherals; differs only in package (64-pin LQFP, 0.50 mm pitch vs. 0.80 mm) and temperature grade (N-version identical). | Requires PCB redesign due to finer pitch; better suited for high-density layouts where 0.50 mm footprint is preferred. | Select when board space is constrained and assembly process supports 0.50 mm pitch; otherwise R5F2L368CNFA#31 offers easier hand-soldering and rework. |
| R5F2L388CNFA#30 | Upgraded R8C/L38C Group part: adds 6 extra ADC channels (16 total), 12 more I/O pins (64 total), and 16-segment LCD expansion (48 SEG), same package and temp grade. | Targets more complex UIs with additional sensors or larger displays; higher pin count supports expanded peripheral connectivity. | Choose when future scalability is needed - e.g., adding humidity/pressure sensors or multi-line LCD - without changing package or layout. |
Compared with R5F2L368CNFA#31, R5F2L368CNFP#30 offers identical functionality in a denser package requiring tighter layout tolerances, while R5F2L388CNFA#30 provides measurable headroom in analog channel count and I/O for next-generation feature sets - both retain full software compatibility within the R8C/LxxC family.
Availability
R5F2L368CNFA#31 is available at Aetrix Electronics and suitable for appliance control panels, industrial HMIs, consumer audio remotes, and smart thermostat interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for R5F2L368CNFA#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 is a global semiconductor leader specializing in microcontrollers, analog, and power management solutions for automotive, industrial, and IoT applications.
The R8C/L36C Group is designed for cost-sensitive, display-integrated embedded systems requiring low power, integrated LCD driving, and robust analog interface - targeting white goods, office equipment, and consumer electronics.
FAQ
What is the operating temperature range for R5F2L368CNFA#31?
The R5F2L368CNFA#31 is rated for an operating ambient temperature range of -20°C to +85°C, designated by the 'N' suffix in its part number. This makes it suitable for indoor consumer and industrial environments where extended thermal stress is not expected, unlike the 'D' version rated down to -40°C.
Does R5F2L368CNFA#31 support in-system programming (ISP)?
Yes, R5F2L368CNFA#31 supports on-chip debug and in-system programming via its on-board flash rewrite function. It uses the standard Renesas E8/E8a debug interface, allowing firmware updates and debugging without removing the device from the target board.
How many LCD segment and common lines does R5F2L368CNFA#31 drive?
R5F2L368CNFA#31 supports up to 8 common output pins (COM0–COM7) and 32 segment output pins (SEG0–SEG31), enabling static, 1/2, 1/3, 1/4, or 1/8 multiplexed LCD displays - sufficient for 4-digit alphanumeric or custom icon-based interfaces.
Can R5F2L368CNFA#31 perform ADC conversions during CPU sleep modes?
Yes, R5F2L368CNFA#31 can initiate ADC conversions using the DTC (Data Transfer Controller) triggered by internal timers or external events, even in wait mode. The ADC sweep function allows sequential channel sampling without CPU wake-up, reducing average power consumption.
What clock sources are available for the real-time clock (Timer RE) in R5F2L368CNFA#31?
Timer RE in R5F2L368CNFA#31 uses the 32.768 kHz XCIN/XCOUT crystal oscillator as its primary clock source for real-time clock mode. It also supports alternative clock inputs via internal dividers from the high-speed on-chip oscillator, though crystal-based operation ensures highest accuracy for timekeeping.
R5F2L368CNFA#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- R8C/Lx/36C
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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:
- External, Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L368CNFA#31 FAQ
1.How can I place an order for R5F2L368CNFA#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L368CNFA#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 R5F2L368CNFA#31 reliable?
The price and inventory of R5F2L368CNFA#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L368CNFA#31 is usually 5 days.
3.What payment methods are accepted for R5F2L368CNFA#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L368CNFA#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L368CNFA#31?
R5F2L368CNFA#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L368CNFA#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 R5F2L368CNFA#31?
For technical support, including R5F2L368CNFA#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L368CNFA#31 requirements.
6.How does Aetrix verify that R5F2L368CNFA#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L368CNFA#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 R5F2L368CNFA#31 meets industry standards.
7.What is the process for return or replacement of R5F2L368CNFA#31?
All R5F2L368CNFA#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L368CNFA#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 R5F2L368CNFA#31 part is unused and in its original packaging.
Return procedure for R5F2L368CNFA#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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