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Renesas R5F2L38CCNFP#31
- Part No.:
- R5F2L38CCNFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F2L38CCNFP#31.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F2L38CCNFP#31 from Renesas Electronics is a 16-bit R8C/L38C Group single-chip microcontroller featuring the R8C CPU core, 128 KB flash program memory, 10 KB RAM, and integrated LCD drive control supporting up to 48 segment outputs and 8 common outputs. It delivers 50 ns minimum instruction execution at 20 MHz (VCC = 2.7–5.5 V), includes a 16×16-bit hardware multiplier, and targets embedded control in space-constrained consumer appliances with integrated display interfaces.
For engineers reviewing the R5F2L38CCNFP#31 datasheet, R5F2L38CCNFP#31 pinout, R5F2L38CCNFP#31 application, or R5F2L38CCNFP#31 equivalent, this MCU is selected for designs requiring high I/O count (68 programmable ports), on-chip data flash with background operation (BGO), real-time clock (timer RE), LIN bus support, and low-power operation down to 2 µA in stop mode.
Technical Context
The R5F2L38CCNFP#31 implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte address space, enabling efficient C-language execution and deterministic interrupt handling across 69 vectors. Its peripheral set includes timer RD (16-bit × 2) for three-phase PWM generation, timer RC for 3-pin PWM output, and UART0/UART1/UART2 with I²C-bus and LIN protocol support using shared hardware resources.
It integrates a 10-bit A/D converter with 16 input channels, two 8-bit D/A converters, dual comparators (Comparator B), and an LCD controller with internal voltage multiplier and bias/duty configuration (1/2–1/4 bias, static–1/4 duty). Power management includes four low-power modes (wait, stop, power-off, and standard) with selectable oscillators (XIN, XCIN, high-speed/low-speed on-chip).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 1 Mbyte address space, and 16×16→32-bit hardware multiplier |
| Memory | 128 KB flash program ROM + 1 KB × 4 data flash (10,000 erase/write cycles) + 10 KB RAM |
| Operating Frequency | 20 MHz max (VCC = 2.7–5.5 V); 5 MHz min (VCC = 1.8–5.5 V) |
| A/D Converter | 10-bit resolution × 16 channels with sample-and-hold and sweep mode |
| LCD Drive | Up to 8 common outputs and 48 segment outputs; supports 1/2–1/4 bias and static–1/4 duty |
| Power Consumption | Typ. 7 mA @ 5.0 V/20 MHz; 2 µA in stop mode; 0.02 µA in power-off mode |
| Package | 80-pin LQFP (PLQP0080KB-A), 0.50 mm pitch, -20°C to +85°C operating range (N version) |
Pinout & Package
Package: 80-pin LQFP (PLQP0080KB-A), 12 × 12 mm body, 0.50 mm pin pitch, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Programmable I/O / SEG0–SEG7 / AN4–AN11 | 8-bit port with LCD segment and 8-channel analog input capability |
| P1_0–P1_7 | Programmable I/O / SEG8–SEG15 / AN12–AN15 | 8-bit port supporting additional LCD segments and 4-channel analog input |
| P2_0–P2_7 | Programmable I/O / SEG16–SEG23 / KI0–KI7 | 8-bit port with key-input interrupt support and 8 LCD segment outputs |
| P3_0–P3_7 | Programmable I/O / SEG24–SEG31 / INT0–INT7 | 8-bit port with external interrupt capability and 8 LCD segment outputs |
| P4_0–P4_7 | Programmable I/O / SEG32–SEG39 / TXD1/RXD1/CLK1/TRCxxx | 8-bit port supporting UART1, clock I/O, and trace interface signals |
| P6_0–P6_7 | Programmable I/O / SEG44–SEG51 / TRDIOA0–TRDIOD1 | 8-bit port dedicated to LCD segment outputs and trace data I/O |
| P7_0–P7_7 | Programmable I/O / COM0–COM7 / SEG52–SEG55 | 8-bit port providing all 8 common outputs and 4 additional segment outputs |
| VCC/AVCC, VSS/AVSS | Power supply / Analog ground | Dual-domain supply pins enable noise-isolated analog operation |
| XIN/XOUT, XCIN/XCOUT | External crystal oscillator inputs | Supports main system clock (up to 20 MHz) and 32 kHz RTC crystal |
| RESET, MODE, WKUP0 | Reset control / Boot mode select / Wake-up input | Hardware reset with configurable boot source and low-power wake-up trigger |
| VL1–VL4, CL1, CL2 | LCD bias voltage and clock inputs | Integrated LCD voltage multiplier uses VL1–VL4; CL1/CL2 provide segment timing |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent data flash erase/write and program execution without halting CPU |
| Hardware LIN Module | Full LIN 2.1/SAE J2602 compliance using UART0 and timer RA - no software stack overhead |
| Multi-Source DTC | Data Transfer Controller with 38 activation sources supports autonomous peripheral-to-memory transfers |
| Configurable Low-Power Modes | Stop mode (2 µA) and power-off mode (0.02 µA) preserve RAM content and enable fast wake-up |
| On-Chip Debug Interface | Fully integrated debug circuit supports breakpoints, watchpoints, and flash programming via single-wire interface |
Applications
| Microwave Oven Control Panel | Refrigerator Display & Sensor Hub |
|---|---|
|
Use Scenario: Real-time temperature monitoring, keypad scanning, and segmented LCD display of cooking time, mode, and status. IC Role / Device Role / Timing Role: Primary system controller executing user interface logic, sensor polling, and LCD refresh at 60 Hz via timer RE and LCD controller. Use Value: Integrated 48-segment LCD driver eliminates external display driver IC; BGO allows firmware updates without display interruption. |
Use Scenario: Multi-zone temperature sensing, door-open detection, defrost cycle control, and energy usage display. IC Role / Device Role / Timing Role: Central MCU managing 16-channel A/D for thermistors, comparator B for door-switch detection, and LIN communication to compressor module. Use Value: 16 analog inputs reduce external signal conditioning; LIN interface enables interoperability with legacy appliance subsystems. |
| Home Audio System Front Panel | Smart Thermostat UI |
|
Use Scenario: Rotary encoder input, volume/mute control, source selection, and 4-digit LED-style LCD display. IC Role / Device Role / Timing Role: Dedicated UI processor handling key scan, PWM audio mute control, and static/1/2-duty LCD drive. Use Value: High-current drive ports directly sink LED backlight current; 8-key interrupt inputs eliminate polling overhead. |
Use Scenario: Ambient temperature/humidity sensing, Wi-Fi module coordination, battery-backed real-time clock, and segmented LCD showing schedule and setpoint. IC Role / Device Role / Timing Role: Low-power host MCU running timer RE for RTC, ADC for environmental sensors, and UART2 for serial communication to wireless module. Use Value: 2 µA stop-mode current extends battery life; integrated voltage detection ensures reliable brown-out reset during battery sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L36CCNFP | 64-pin LQFP, 68 I/O reduced to 52, LCD segments limited to 32, A/D channels reduced to 10 | Suitable for simpler displays (e.g., 2-line text) and fewer sensor inputs | Select when board space and BOM cost constrain I/O and LCD requirements |
| R5F2L3ACCNFP | 100-pin LQFP, 88 I/O, 56 LCD segments, 20 A/D channels, extended temp (-40°C to +85°C) | Required for complex UIs (e.g., graphical segment layouts) and multi-sensor industrial environments | Select when higher I/O density, extended temperature range, or enhanced analog capability is mandatory |
Compared with R5F2L36CCNFP, the R5F2L38CCNFP#31 provides 16 additional A/D channels and 16 more LCD segments without increasing package size beyond 80 pins; compared with R5F2L3ACCNFP, it offers identical peripheral functionality at lower cost and smaller footprint while retaining full compatibility within the R8C/Lx software ecosystem.
Availability
R5F2L38CCNFP#31 is available at Aetrix Electronics and suitable for microwave oven control panels, refrigerator display hubs, home audio front panels, smart thermostat UIs, and other consumer appliance applications requiring stable component supply, long-term lifecycle support, and qualified automotive-grade alternatives.
Supply support for R5F2L38CCNFP#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/L38C Group is part of Renesas' legacy 16-bit MCU family designed specifically for cost-sensitive, display-integrated consumer electronics with stringent EMI/EMS performance and ultra-low standby power requirements.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F2L38CCNFP#31?
The R5F2L38CCNFP#31 operates at up to 20 MHz when supplied with 2.7–5.5 V, and supports a minimum 5 MHz operation down to 1.8 V. This dual-voltage capability enables flexible power design across battery-powered and line-powered consumer appliances while maintaining full peripheral functionality.
Does the R5F2L38CCNFP#31 support in-system programming and secure code protection?
Yes, the R5F2L38CCNFP#31 supports on-board flash rewrite via its on-chip debug interface and includes ROM code protect and ID code check features to prevent unauthorized readout or modification of firmware. These mechanisms are configurable during production programming and enforced at power-on reset.
How many LCD segments and commons does the R5F2L38CCNFP#31 drive, and what bias/duty configurations are supported?
The R5F2L38CCNFP#31 drives up to 48 segment outputs and 8 common outputs. It supports 1/2 and 1/3 bias, and static, 1/2, 1/3, and 1/4 duty configurations. The integrated voltage multiplier and dedicated regulator eliminate need for external bias components in most implementations.
Can the R5F2L38CCNFP#31 operate in low-power modes while maintaining RTC and RAM retention?
Yes - in stop mode, the R5F2L38CCNFP#31 consumes just 2 µA while retaining full RAM content and continuing real-time clock operation via the 32 kHz XCIN oscillator. Wake-up is possible via external interrupt, key input, or RTC alarm, enabling rapid resumption of UI tasks.
Is the R5F2L38CCNFP#31 pin-compatible with other members of the R8C/Lx series, such as the R8C/L36C or R8C/L3AC groups?
No - the R5F2L38CCNFP#31 uses an 80-pin LQFP (PLQP0080KB-A) package, whereas R8C/L36C devices use 64-pin packages and R8C/L3AC devices use 100-pin packages. Pin assignments, I/O counts, and peripheral mappings differ significantly across groups; migration requires PCB redesign and firmware adaptation.
R5F2L38CCNFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/Lx/38C
- 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:
- 68
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 16x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L38CCNFP#31 FAQ
1.How can I place an order for R5F2L38CCNFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L38CCNFP#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 R5F2L38CCNFP#31 reliable?
The price and inventory of R5F2L38CCNFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L38CCNFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L38CCNFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L38CCNFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L38CCNFP#31?
R5F2L38CCNFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L38CCNFP#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 R5F2L38CCNFP#31?
For technical support, including R5F2L38CCNFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L38CCNFP#31 requirements.
6.How does Aetrix verify that R5F2L38CCNFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L38CCNFP#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 R5F2L38CCNFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L38CCNFP#31?
All R5F2L38CCNFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L38CCNFP#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 R5F2L38CCNFP#31 part is unused and in its original packaging.
Return procedure for R5F2L38CCNFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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