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Renesas R5F2L38CBNFP#U1
- Part No.:
- R5F2L38CBNFP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F2L38CBNFP#U1.pdf
- Description:
- 16-BIT, FLASH, R8C CPU
- Quantity:
- Payment:
- Shipping:
Inventory:7,328
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Product details
Overview
R5F2L38CBNFP#U1 from Renesas Electronics is an 8-bit R8C/L38B Group microcontroller featuring the R8C CPU core, 128 KB flash program memory, 10 KB RAM, and integrated LCD controller supporting up to 8 common and 48 segment outputs. It operates at up to 20 MHz (VCC = 2.7–5.5 V), delivers 68 programmable CMOS I/O pins with 8 high-current drive ports, and targets embedded control in cost-sensitive consumer and industrial displays.
For engineers reviewing the R5F2L38CBNFP#U1 datasheet, R5F2L38CBNFP#U1 pinout, R5F2L38CBNFP#U1 application, or R5F2L38CBNFP#U1 equivalent, key selection criteria include its -40°C to +85°C operating range (D version), on-chip debug capability, background operation (BGO) disabled (L38B group), and absence of data flash - distinguishing it from L38A variants.
Technical Context
The R5F2L38CBNFP#U1 implements the R8C CPU core with 89 fundamental instructions, 16×16-bit hardware multiplier, and 1 Mbyte address space. It supports four clock sources: external XIN (up to 20 MHz), 32 kHz XCIN, high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - enabling flexible power-mode management including wait, stop, and power-off modes with sub-µA current draw.
Peripheral integration includes Timer RA/RB/RC/RD/RE/RG (with PWM, input capture, real-time clock), UART0/1/2 (I²C-capable), SSU, LIN module (using Timer RA + UART0), 10-bit ADC across 16 channels, dual 8-bit DACs, two comparator units, and a full-featured LCD controller with integrated voltage multiplier and regulator for static/1/2/1/3/1/4 duty bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 8-bit core with 89 instructions, 16×16→32-bit multiplier, 1 Mbyte address space |
| Flash Memory | 128 KB program ROM, 1,000 write/erase cycles, no data flash (L38B group) |
| RAM | 10 KB on-chip RAM for variables and stack |
| Operating Voltage | 1.8–5.5 V; supports 5 MHz @ 1.8 V or 20 MHz @ 2.7–5.5 V |
| I/O Pins | 68 programmable CMOS I/O ports with selectable pull-up resistors; 8 high-current drive ports |
| LCD Controller | Supports up to 8 COM / 48 SEG outputs; integrated voltage multiplier and regulator; 1/2, 1/3, 1/4 bias; static to 1/4 duty |
| ADC | 10-bit resolution × 16 channels with sample-and-hold and sweep mode |
| Package | 80-pin LQFP (PLQP0080JA-A), RoHS-compliant, N/D temperature grade marked by suffix |
Pinout & Package
Package: 80-pin LQFP (PLQP0080JA-A), 12 mm × 12 mm, 0.5 mm pitch, exposed pad for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS, VSS1, VSS2, VSS3 | Ground reference | Dedicated ground pins for analog, digital, and LCD sections to minimize noise coupling |
| VCC, VCC1, VCC2, VCC3 | Power supply | Separate supply pins for core, I/O, and LCD circuitry enabling independent voltage scaling and noise isolation |
| XIN / XOUT | External crystal oscillator input/output | Drives high-precision 1–20 MHz system clock; supports ceramic resonator or crystal |
| XCIN / XOUT | 32.768 kHz RTC oscillator | Enables accurate real-time clock operation in stop/power-off modes with µA-level current |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external debounced signal or power-on reset assertion |
| P00–P07 | Programmable I/O port 0 | 8-bit bidirectional port; P00–P03 support LCD segment outputs (SEG0–SEG3); all pins support interrupt |
| P20–P27 | Programmable I/O port 2 | 8-bit port; P20–P23 support LCD segment outputs (SEG20–SEG23); P24–P27 are general-purpose only |
| P30–P37 | Programmable I/O port 3 | 8-bit port; P34–P37 support LCD segment outputs (SEG24–SEG27); P30–P33 support key input interrupts |
| P40–P47 | Programmable I/O port 4 | 8-bit port; P40–P47 support LCD segment outputs (SEG32–SEG39); all pins support high-current drive |
| P60–P67 | Programmable I/O port 6 | 8-bit port; P60–P67 support LCD segment outputs (SEG44–SEG51); P60–P63 also serve as Timer RD I/O |
| P70–P73 | Programmable I/O port 7 | 4-bit port; P70–P73 support LCD common outputs (COM0–COM3); also function as INT0–INT3 inputs |
| VL1–VL4 | LCD bias voltage outputs | Integrated voltage multiplier generates VL1–VL4 for 1/2, 1/3, or 1/4 bias LCD driving without external components |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Full ICE-compatible debug via single-wire SWJ interface enables real-time code execution control and memory inspection without external emulator |
| Low-power operation | 1 µA power-off mode with timer RE active; 0.02 µA with timer RE disabled - extends battery life in portable display applications |
| Integrated LCD controller | Eliminates external LCD driver IC; supports static, 1/2, 1/3, and 1/4 duty drives with built-in voltage multiplier and regulator for direct connection to segment/common electrodes |
| Hardware LIN module | Single-channel LIN 2.0/2.1 compliant transceiver implemented using UART0 and Timer RA - reduces BOM and software overhead in automotive body electronics |
| 16-channel 10-bit ADC | Simultaneous sampling with sweep mode allows rapid acquisition of multiple sensor inputs (e.g., temperature, light, potentiometer) for closed-loop display brightness or contrast control |
| High-current I/O ports | 8 pins deliver >20 mA sink/source - directly drive LEDs, relays, or small solenoids without external drivers in appliance front-panel interfaces |
Applications
| Refrigerator Control Panel | Industrial HMI Display |
|---|---|
Use Scenario: Microcontroller manages keypad input, temperature sensor readings, compressor logic, and segmented LCD display showing setpoint, status, and error codes. IC Role / Device Role / Timing Role: Central system controller executing real-time thermodynamic logic while driving 48-segment LCD with integrated bias generation and managing LIN communication to compressor module. Use Value: Reduces component count by integrating LCD driver, ADC, LIN, and high-drive I/O - lowering BOM cost and PCB area versus discrete solutions. |
Use Scenario: Embedded display unit in factory automation equipment shows machine status, fault logs, and parameter settings using multiplexed LCD with backlight control. IC Role / Device Role / Timing Role: Primary display controller handling 8-COM/48-SEG LCD refresh, reading rotary encoder and pushbutton inputs, and communicating via UART to PLC over RS-485. Use Value: Enables reliable operation from -40°C to +85°C with low standby current, meeting industrial environmental requirements without external temperature compensation. |
| Smart Thermostat Interface | Home Appliance Keypad & Display |
Use Scenario: Residential thermostat uses capacitive or mechanical keys, ambient temperature/humidity sensing, and segmented LCD to show setpoint, schedule, and HVAC mode. IC Role / Device Role / Timing Role: Real-time system controller running PID loop for temperature regulation while managing 16-channel ADC inputs and driving LCD with integrated voltage multiplier. Use Value: On-chip 10-bit ADC and LCD controller eliminate need for external analog front-end and display driver - simplifying certification and reducing time-to-market. |
Use Scenario: Microwave oven or washing machine control panel integrates touch keys, LED indicators, buzzer, and 4-digit LCD display with icon segments. IC Role / Device Role / Timing Role: Dedicated UI controller handling key scan, buzzer tone generation via PWM, LED drive via high-current I/O, and static/1/2-bias LCD output. Use Value: 8 high-current I/O pins directly drive LEDs and buzzers; 68 total I/O allow expansion for future feature sets without changing MCU footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L38CANFP#U1 | Same package and pinout; L38A variant with 1 KB × 4 data flash and BGO function enabled | Required where firmware field updates or parameter storage in data flash is needed | Select R5F2L38CANFP#U1 if non-volatile parameter retention or bootloader update capability is required |
| R5F2L36CBNFP#U1 | 64-pin LQFP; 52 I/O pins; 128 KB flash, 10 KB RAM; same D-grade (-40°C to +85°C) but no LCD controller | Suitable for non-display applications needing higher I/O density per mm² and lower pin count | Choose R5F2L36CBNFP#U1 when LCD functionality is unnecessary and board space constraints favor smaller package |
Compared with R5F2L38CBNFP#U1, R5F2L38CANFP#U1 adds data flash for configuration storage but increases code size overhead; R5F2L36CBNFP#U1 trades LCD capability for compact 64-pin layout and reduced peripheral count - making it preferable for non-display control nodes in multi-MCU systems.
Availability
R5F2L38CBNFP#U1 is available at Aetrix Electronics and suitable for refrigerator control panels, industrial HMIs, smart thermostats, and home appliance interfaces requiring stable component supply, long-lifecycle support, and guaranteed D-grade (-40°C to +85°C) operation.
Supply support for R5F2L38CBNFP#U1 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/L38B Group, including R5F2L38CBNFP#U1, was designed for cost-optimized, low-power embedded control in consumer and industrial displays - emphasizing integrated LCD driving, robust I/O, and extended temperature reliability without data flash overhead.
FAQ
What is the operating temperature range for R5F2L38CBNFP#U1?
R5F2L38CBNFP#U1 is a D-version device rated for -40°C to +85°C ambient operating temperature, validated for industrial and automotive cabin applications where extended thermal stability is required. This rating is confirmed in Table 1.7 of the R8C/L3x preliminary specification and applies across all operating modes including power-off with timer RE enabled.
Does R5F2L38CBNFP#U1 include data flash memory?
No, R5F2L38CBNFP#U1 does not include data flash memory. As an L38B Group member, it lacks the 1 KB × 4 data flash with background operation (BGO) found in L38A variants like R5F2L38CANFP#U1. Its 128 KB program ROM supports 1,000 write/erase cycles, sufficient for firmware-only updates but not for runtime parameter storage.
Which package type is used for R5F2L38CBNFP#U1?
R5F2L38CBNFP#U1 uses the 80-pin LQFP package designated PLQP0080JA-A - a RoHS-compliant, 12 mm × 12 mm body with 0.5 mm lead pitch and exposed thermal pad. Pin assignments match Figures 1.15–1.17 in the R8C/L3x preliminary specification, confirming compatibility with standard 80-LQFP footprints.
Can R5F2L38CBNFP#U1 drive a 1/4-bias LCD display?
Yes, R5F2L38CBNFP#U1 supports 1/4-bias LCD operation through its integrated LCD controller. The controller provides VL1–VL4 outputs and configurable duty settings (static, 1/2, 1/3, 1/4), enabling direct connection to 4-common, 48-segment displays without external bias circuitry - as specified in Table 1.6 and confirmed in the LCD Drive Control Circuit section.
What debug interface does R5F2L38CBNFP#U1 support?
R5F2L38CBNFP#U1 supports on-chip debugging via Renesas' single-wire SWJ (Serial Wire JTAG) interface, compatible with E20 emulator and CS+ IDE. This allows full breakpoint, step-through, and memory inspection capabilities without requiring dedicated debug pins beyond the standard SWDIO and SWCLK signals.
R5F2L38CBNFP#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/Lx/38B
- Packaging:
- Bulk
- 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:
- -
- 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:
R5F2L38CBNFP#U1 FAQ
1.How can I place an order for R5F2L38CBNFP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L38CBNFP#U1 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 R5F2L38CBNFP#U1 reliable?
The price and inventory of R5F2L38CBNFP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L38CBNFP#U1 is usually 5 days.
3.What payment methods are accepted for R5F2L38CBNFP#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L38CBNFP#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L38CBNFP#U1?
R5F2L38CBNFP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L38CBNFP#U1 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 R5F2L38CBNFP#U1?
For technical support, including R5F2L38CBNFP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L38CBNFP#U1 requirements.
6.How does Aetrix verify that R5F2L38CBNFP#U1 is sourced from the original manufacturer or authorized distributors?
All R5F2L38CBNFP#U1 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 R5F2L38CBNFP#U1 meets industry standards.
7.What is the process for return or replacement of R5F2L38CBNFP#U1?
All R5F2L38CBNFP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L38CBNFP#U1, 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 R5F2L38CBNFP#U1 part is unused and in its original packaging.
Return procedure for R5F2L38CBNFP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F2L38CBNFP#U1 Tags
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