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Renesas R5F2L388CDFP#31
- Part No.:
- R5F2L388CDFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F2L388CDFP#31.pdf
- Description:
- 16BIT MCU R8C/L38C ROM64K/RAM8K
- Quantity:
- Payment:
- Shipping:
Inventory:4,603
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Product details
Overview
R5F2L388CDFP#31 from Renesas is an 8-bit R8C/L38C Group microcontroller featuring the R8C CPU core, 64 KB program flash, 1 KB × 4 data flash with background operation (BGO), 8 KB RAM, and integrated LCD drive (up to 8 COM / 48 SEG pins). It supports 16-channel 10-bit A/D conversion, dual D/A converters, LIN hardware module, and operates from -40°C to +85°C in an 80-pin LQFP package - optimized for cost-sensitive consumer appliance control with embedded display interfaces.
For engineers reviewing the R5F2L388CDFP#31 datasheet, R5F2L388CDFP#31 pinout, R5F2L388CDFP#31 application, or R5F2L388CDFP#31 equivalent, key selection criteria include its 16-channel ADC resolution, 48-segment LCD drive capability, LIN bus support using UART0 and Timer RA, BGO-enabled data flash reprogramming during runtime, and compatibility with Renesas' E1/E20 debug interfaces.
Technical Context
The R5F2L388CDFP#31 implements the R8C CPU core with 89 fundamental instructions and a dedicated 16×16→32-bit multiplier for efficient signal processing. Its system clock generation includes four independent sources: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - enabling flexible power-mode transitions between standard, wait, stop, and power-off modes.
Peripheral integration centers on mixed-signal timing and interface functions: Timer RD provides three-phase PWM with complementary outputs for motor control; UART0/1/2 support UART, I²C, and LIN protocols; and the LCD controller integrates voltage multiplier and bias regulation for direct segment/common drive without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 8-bit core with 16×16→32-bit hardware multiplier and 1 Mbyte address space |
| Memory | 64 KB program flash, 1 KB × 4 data flash (10,000 erase cycles), 8 KB RAM |
| ADC | 10-bit resolution × 16 channels with sample-and-hold and sweep mode |
| LCD Drive | Up to 8 common output pins and 48 segment output pins; integrated voltage multiplier |
| Timers | Timer RA/RB (8-bit), RC/RD/RG (16-bit), RE (real-time clock); RD supports 3-phase complementary PWM |
| Interfaces | UART0/1/2 (LIN-capable), I²C-bus, SSU, hardware LIN module (uses UART0 + Timer RA) |
| Operating Range | -40°C to +85°C; supply voltage 1.8–5.5 V; typical current 3.6 mA @ 3.0 V / 10 MHz |
Pinout & Package
Package: PLQP0080KB-A - 80-pin LQFP (0.50 mm pitch), 12 × 12 mm body, exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | SEG0–SEG7 / AN4–AN9 | Segment outputs and analog inputs; shared function enables compact display + sensor integration |
| P1_0–P1_3 | SEG8–SEG11 / AN12–AN15 | Additional segment outputs and analog inputs; extends LCD and sensing capability |
| P2_0–P2_7 | SEG16–SEG23 / KI0–KI7 | Segment outputs and key input interrupt pins; supports keypad scanning with hardware debouncing |
| P3_0–P3_7 | SEG24–SEG31 / INT0–INT7 | Segment outputs and external interrupt inputs; enables wake-up from low-power modes via button press |
| P4_0–P4_7 | SEG32–SEG39 / TXD1, RXD1, CLK1, TRCIOx | Segment outputs and serial interface signals; allows concurrent display update and communication |
| P6_0–P6_7 | SEG44–SEG51 / TRDIOA0–TRDIOD1 | High-density segment outputs and trace/debug I/O; supports full 48-segment LCD drive |
| P7_0–P7_7 | COM0–COM7 | Common output pins for multiplexed LCD; 8 COMs enable static-to-1/8 duty ratio flexibility |
| VL1–VL4, CL1, CL2 | LCD bias and clock | Dedicated LCD power and clock pins; internal voltage multiplier eliminates need for external charge pump |
| XCIN/XCOUT | 32 kHz crystal oscillator | Enables accurate real-time clock (Timer RE) and ultra-low-power wake-up capability |
| RESET, MODE, WKUP0 | Reset, boot mode, wake-up | Hardware reset with configurable boot source; wake-up pin supports edge-triggered entry from stop mode |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming while CPU executes main application code - enables seamless firmware updates |
| Integrated LCD Controller | Drives up to 384 segments (8 COM × 48 SEG); includes internal voltage multiplier and bias regulation |
| Hardware LIN Module | Full LIN 2.1 compliance using UART0 and Timer RA; reduces host CPU overhead for automotive body electronics |
| Low-Power Modes | Stop mode draws 2 µA; power-off mode draws 0.02 µA - extends battery life in portable appliances |
| 16-Channel 10-bit ADC | Simultaneous sampling across 16 inputs with sweep mode; supports precise temperature, voltage, and sensor monitoring |
| Dual 8-bit DACs | Independent voltage outputs (DA0/DA1); suitable for audio tone generation or analog actuator control |
Applications
| Microwave Oven Control | Refrigerator Display Panel |
|---|---|
|
Use Scenario: Real-time cooking cycle management with keypad input, LED/LCD status display, and thermal sensor feedback. IC Role / Device Role / Timing Role: Main system controller executing state machine logic, driving 48-segment LCD for timer/countdown display, and sampling NTC thermistors via 16-channel ADC. Use Value: Integrated LCD driver eliminates external segment drivers; BGO enables field-upgradable cooking profiles without halting operation. |
Use Scenario: Multi-zone temperature monitoring and segmented display of fridge/freezer compartments with door-open alert. IC Role / Device Role / Timing Role: Central MCU managing 16 analog sensor inputs (thermistors), updating 8-COM/48-SEG LCD, and generating audible alerts via DAC-driven buzzer. Use Value: Single-chip solution replaces discrete ADC, display driver, and audio generator - reducing BOM count and PCB area by >30%. |
| Home Audio System UI | Smart Thermostat Interface |
|
Use Scenario: Volume, EQ, and source selection interface with rotary encoder input and backlit LCD status display. IC Role / Device Role / Timing Role: User interface processor handling key scan (KI0–KI7), driving 48-segment LCD, and generating tone feedback via dual DACs. Use Value: Hardware key interrupt + built-in debounce reduces firmware complexity; DACs provide clean 1–5 kHz audio tones without external codec. |
Use Scenario: Wall-mounted HVAC controller with ambient temperature/humidity sensing, LCD menu navigation, and relay control. IC Role / Device Role / Timing Role: Embedded controller acquiring analog sensor data, rendering hierarchical menus on 8-COM/48-SEG LCD, and managing relay timing via Timer RD PWM. Use Value: Integrated 16-channel ADC supports multi-sensor fusion; LIN interface enables daisy-chain communication with HVAC master unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L388CNFP | Same core, memory, and peripherals but rated for -20°C to +85°C (N version); lacks extended industrial temperature range | Suitable for indoor consumer devices without thermal stress; not qualified for freezer or garage environments | Select R5F2L388CNFP only if ambient operating temperature remains above -20°C and cost sensitivity outweighs reliability margin |
| R5F2L3AC8CDFP | Higher I/O count (88 pins vs. 80), 20-channel ADC, 56-segment LCD drive, and 100-pin LQFP package | Targeted at larger displays and more complex sensor sets; requires PCB redesign due to pin count and package size increase | Choose R5F2L3AC8CDFP when expanding display resolution beyond 48 segments or adding >16 analog sensors |
Compared with R5F2L388CDFP#31, R5F2L388CNFP trades industrial temperature tolerance for lower cost, while R5F2L3AC8CDFP adds I/O and display capacity at the expense of footprint and layout compatibility - making R5F2L388CDFP#31 the optimal balance for mid-complexity appliance UIs requiring robustness and integration.
Availability
R5F2L388CDFP#31 is available at Aetrix Electronics and suitable for microwave oven control, refrigerator display panels, home audio UIs, smart thermostat interfaces, and other embedded consumer electronics requiring stable component supply across long production lifecycles.
Supply support for R5F2L388CDFP#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 - including R5F2L388CDFP#31 - was designed specifically for cost-optimized, display-integrated control in white goods and consumer appliances, emphasizing low-power operation, integrated LCD drive, and robust peripheral sets for human-machine interface (HMI) applications.
FAQ
What is the maximum LCD segment count supported by R5F2L388CDFP#31?
R5F2L388CDFP#31 supports up to 48 segment output pins and 8 common output pins, enabling static, 1/2, 1/3, 1/4, or 1/8 duty drive configurations. This allows implementation of up to 384 distinct segments (8 × 48) for alphanumeric or icon-based displays in appliances like microwaves and refrigerators - all managed by the on-chip LCD controller without external drivers.
Does R5F2L388CDFP#31 support hardware LIN communication?
Yes, R5F2L388CDFP#31 includes a dedicated hardware LIN module compliant with LIN 2.1, implemented using UART0 and Timer RA. This offloads protocol framing, checksum calculation, and synchronization from the CPU - enabling reliable communication with automotive body control modules or multi-node appliance subsystems without firmware-intensive bit-banging.
What debug interfaces are compatible with R5F2L388CDFP#31?
R5F2L388CDFP#31 supports Renesas' standard on-chip debugging via the FINE interface, fully compatible with the E1 and E20 emulators. Debugging includes breakpoints, watchpoints, memory inspection, and flash programming - all accessible through Renesas CS+ or e² studio IDEs without requiring additional debug circuitry on the target board.
Can R5F2L388CDFP#31 perform flash reprogramming during normal operation?
Yes, R5F2L388CDFP#31 supports Background Operation (BGO) for data flash, allowing erase and write operations to proceed concurrently with CPU program execution. This enables safe over-the-air or local firmware updates for parameters or calibration data without interrupting real-time control tasks - critical for uninterrupted appliance operation.
What is the operating voltage range and associated frequency limits for R5F2L388CDFP#31?
R5F2L388CDFP#31 operates from 1.8 V to 5.5 V. At 2.7–5.5 V, it supports up to 20 MHz XIN clock (50 ns min instruction time); at 1.8–5.5 V, maximum frequency drops to 5 MHz (200 ns min instruction time). This dual-voltage/frequency profile ensures compatibility with both 3.3 V and 5 V legacy systems while maintaining low-power operation down to 1.8 V.
R5F2L388CDFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/Lx/38C
- 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:
- 68
- 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 16x10b; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L388CDFP#31 FAQ
1.How can I place an order for R5F2L388CDFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L388CDFP#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 R5F2L388CDFP#31 reliable?
The price and inventory of R5F2L388CDFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L388CDFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L388CDFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L388CDFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L388CDFP#31?
R5F2L388CDFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L388CDFP#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 R5F2L388CDFP#31?
For technical support, including R5F2L388CDFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L388CDFP#31 requirements.
6.How does Aetrix verify that R5F2L388CDFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L388CDFP#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 R5F2L388CDFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L388CDFP#31?
All R5F2L388CDFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L388CDFP#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 R5F2L388CDFP#31 part is unused and in its original packaging.
Return procedure for R5F2L388CDFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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