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Renesas R5F2L38CMDFP#31
- Part No.:
- R5F2L38CMDFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F2L38CMDFP#31.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,762
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Product details
Overview
R5F2L38CMDFP#31 from Renesas Electronics is a 16-bit R8C CPU core MCU in the R8C/L38M Group, featuring 128 KB flash program memory, 10 KB RAM, and 1 KB × 4 data flash with background operation (BGO). It delivers 50 ns minimum instruction execution at 20 MHz, integrates a 16×16→32-bit hardware multiplier, and supports LCD drive (up to 8 COM / 48 SEG pins) for embedded appliance control.
For engineers reviewing the R5F2L38CMDFP#31 datasheet, R5F2L38CMDFP#31 pinout, R5F2L38CMDFP#31 application, or R5F2L38CMDFP#31 equivalent, key selection criteria include its 68-pin LQFP-80 package, -40°C to +85°C industrial temperature grade (D version), 10-bit × 16-channel ADC, dual 8-bit DACs, and integrated LIN module using UART0 and Timer RA.
Technical Context
The R5F2L38CMDFP#31 implements the R8C CPU core with 89 fundamental instructions and single-chip 1 Mbyte address space. Its clock system includes XIN (20 MHz max), XCIN (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 RD (16-bit × 2, supporting 6-pin complementary PWM and three-phase waveform generation), Timer RG (16-bit phase-counting and PWM), DTC (1 channel, 38 activation sources), and UART0/UART1/UART2 with I²C-bus mode and hardware LIN support. The device uses a dedicated voltage detection circuit with power-on reset and configurable voltage detection levels.
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 for real-time math acceleration. |
| Memory | 128 KB flash ROM, 10 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO for firmware updates without halting execution. |
| ADC | 10-bit resolution × 16 channels with sample-and-hold and sweep mode - enables simultaneous multi-sensor monitoring in appliance UIs. |
| LCD Driver | Supports up to 8 common and 48 segment outputs with integrated voltage multiplier and bias options (1/2, 1/3, 1/4) - drives alphanumeric displays without external bias ICs. |
| Timers | Timer RD (16-bit × 2) provides 6-pin complementary PWM for motor control; Timer RE (8-bit) operates as real-time clock with alarm output. |
| Operating Range | -40°C to +85°C ambient temperature (D version), 1.8–5.5 V supply - suitable for industrial-grade consumer electronics in variable thermal environments. |
| Low-Power Modes | Wait mode (3.5 µA @ 3.0 V, 32 kHz), stop mode (2 µA), and power-off mode (1.4 µA with timer RE active) - extends battery life in standby applications. |
Pinout & Package
Package: 80-pin LQFP (PLQP0080KB-A, 0.50 mm pitch), 12 × 12 mm body, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | SEG0–SEG7 / AN4–AN11 | Shared LCD segment outputs and analog inputs - enables direct connection to display segments while supporting 8-channel sensor interface. |
| P1_0–P1_3 | SEG8–SEG11 / AN12–AN15 | Additional LCD segment and analog input pins - expands display capability and sensor count beyond P0 group. |
| P2_0–P2_7 | SEG16–SEG23 / KI0–KI7 | Segment outputs and key-input interrupt pins - supports keypad scanning with hardware debouncing and wake-up capability. |
| P3_0–P3_7 | SEG24–SEG31 / INT0–INT7 | Segment outputs and external interrupt sources - allows simultaneous LCD driving and responsive user-event handling. |
| P4_0–P4_7 | SEG32–SEG39 / TXD1, RXD1, CLK1, TRCxxx | Segment outputs and serial communication signals - enables display multiplexing alongside UART debug or peripheral comms. |
| P6_0–P6_7 | SEG44–SEG51 / TRDIOA0–TRDIOD1 | High-density segment outputs and trace/debug I/O - supports full 48-segment LCD with optional JTAG-style trace functionality. |
| P7_0–P7_7 | SEG52–SEG55 / COM0–COM7 | Segment and common outputs - completes 8-common drive capability for static or multiplexed LCD panels. |
| VL1–VL4, CL1, CL2 | LCD bias and clock | Dedicated LCD power and clock pins - eliminates need for external bias generator; CL1/CL2 configure internal oscillator for LCD timing. |
| XIN/XOUT, XCIN/XCOUT | Crystal oscillator inputs | Supports main 20 MHz crystal and 32 kHz RTC crystal - enables precise system timing and accurate real-time clock operation. |
| RESET, MODE, WKUP0 | Reset, boot mode, wake-up | Hardware reset with power-on detection; MODE pin selects boot source; WKUP0 enables low-power wake from key press or external event. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables real-time firmware updates by allowing CPU execution during data flash programming - critical for field-upgradable appliances. |
| Integrated LIN Module | Hardware LIN 2.1 compliance using UART0 and Timer RA - reduces host CPU overhead for automotive body electronics and HVAC subsystems. |
| 16-Channel 10-bit ADC with Sweep Mode | Automatically sequences conversions across all 16 channels - simplifies multi-sensor polling (e.g., temperature, voltage, current) without software intervention. |
| Dual 8-bit D/A Converters | Provides independent analog outputs for reference voltages or actuator control - supports closed-loop feedback in motor or lighting systems. |
| Real-Time Clock (Timer RE) | Counts seconds/minutes/hours/days-of-week with alarm interrupt - enables time-stamped logging and scheduled operations in smart appliances. |
| High-Current Drive Ports | 8 pins capable of >10 mA sink/source - directly drives LEDs, small relays, or buzzer elements without external drivers. |
Applications
| Refrigerator Control Unit | Multi-Function Printer UI |
|---|---|
|
Use Scenario: Real-time monitoring of compressor temperature, door-open events, and ice-maker status while updating segmented LCD display. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, PID-based cooling logic, and LCD refresh at 60 Hz via built-in segment driver. Use Value: Integrated 16-channel ADC and 48-segment LCD driver eliminate two external ICs, reducing BOM cost and PCB area by ~35%. |
Use Scenario: Managing paper jam detection, toner level sensing, button matrix scan, and status display on monochrome LCD panel. IC Role / Device Role / Timing Role: Central UI processor handling key interrupts (KI0–KI7), analog toner voltage reading, and static/dynamic LCD segment updates. Use Value: Hardware key-input interrupt with wake-from-wait capability cuts system standby current to 3.5 µA, extending sleep-mode battery life. |
| Home Audio System Front Panel | Industrial Thermostat Display |
|
Use Scenario: Driving 4-digit 7-segment display, decoding rotary encoder input, controlling LED indicators, and managing IR remote reception. IC Role / Device Role / Timing Role: Dedicated UI controller interfacing with encoders, IR demodulator, and display - offloading main audio DSP. Use Value: On-chip 16×16 multiplier accelerates volume ramping algorithms; dual DACs generate smooth LED dimming waveforms. |
Use Scenario: Reading thermistor network, driving 2-line character LCD, logging temperature history to data flash, and triggering relay outputs. IC Role / Device Role / Timing Role: Standalone environmental controller with RTC-based scheduling and nonvolatile parameter storage in data flash. Use Value: Background operation allows over-the-air calibration updates without disrupting thermostat operation or losing real-time clock accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L36CMDFP | 64-pin LQFP, 68 I/O ports → 52 I/O; 12-channel ADC (vs. 16); 32-segment LCD drive (vs. 48); same CPU, flash, RAM, and D version rating. | Suitable for smaller displays (e.g., 2×16 char LCD) and fewer sensors - used in compact appliances like coffee makers or humidifiers. | Select when display and analog channel count are reduced and PCB space is constrained to 64-pin footprint. |
| R5F2L3AMDFP | 100-pin LQFP, 88 I/O ports, 20-channel ADC, 56-segment LCD, additional Timer RG I/O pins - higher pin count and extended peripheral set. | Targeted at complex HMI with larger LCDs (e.g., graphical segment arrays) and dense sensor networks in HVAC or commercial kitchen equipment. | Choose for scalability: identical architecture and toolchain, but with headroom for future feature expansion and higher I/O density. |
Compared with R5F2L36CMDFP, the R5F2L38CMDFP#31 adds 16 ADC channels and 16 extra LCD segments for richer sensing and display; versus R5F2L3AMDFP, it offers identical core performance at lower pin count and cost, making it optimal for mid-tier appliance HMI where 48-segment drive and 16 analog inputs are sufficient.
Availability
R5F2L38CMDFP#31 is available at Aetrix Electronics and suitable for refrigerator control units, multifunction printer UIs, home audio front panels, and industrial thermostat displays requiring stable component supply across long production lifecycles.
Supply support for R5F2L38CMDFP#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 solutions for industrial, automotive, and consumer markets.
The R8C/L38M Group targets cost-sensitive, high-integration embedded applications in white goods and office equipment - emphasizing low-power LCD control, sensor interfacing, and real-time responsiveness without external support ICs.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F2L38CMDFP#31?
The R5F2L38CMDFP#31 operates at up to 20 MHz when supplied at 2.7–5.5 V, and supports reduced-frequency operation down to 5 MHz at 1.8–5.5 V. This dual-voltage flexibility allows deployment in both battery-powered and line-powered designs while maintaining deterministic timing across voltage drops.
Does the R5F2L38CMDFP#31 support hardware LIN communication, and how is it implemented?
Yes, the R5F2L38CMDFP#31 includes a dedicated hardware LIN module compliant with LIN 2.1, implemented using UART0 for serial framing and Timer RA for baud rate generation and synchronization. This offloads LIN protocol handling from the CPU, ensuring reliable communication in automotive body control modules.
How many LCD segment and common pins does the R5F2L38CMDFP#31 support, and what bias configurations are available?
The R5F2L38CMDFP#31 supports up to 48 segment outputs and 8 common outputs. It provides programmable LCD bias options (1/2, 1/3, 1/4) and duty cycles (static, 1/2, 1/3, 1/4, 1/8), with integrated voltage multiplier and regulator - enabling direct drive of multiplexed alphanumeric displays without external bias components.
What low-power modes are available on the R5F2L38CMDFP#31, and what is the typical current consumption in each?
The R5F2L38CMDFP#31 offers wait mode (3.5 µA @ 3.0 V, 32 kHz), stop mode (2 µA), and power-off mode (1.4 µA with timer RE active; 0.02 µA with timer RE disabled). These modes are controlled via software and support fast wake-up (< 10 µs from wait mode), ideal for energy-conscious appliance standby functions.
Is background operation (BGO) supported for data flash writes on the R5F2L38CMDFP#31, and what is its practical benefit?
Yes, the R5F2L38CMDFP#31 supports background operation (BGO) for data flash, allowing CPU code execution during erase/write cycles. This enables seamless firmware updates, parameter logging, or calibration storage without halting real-time tasks - essential for uninterrupted operation in smart home controllers.
R5F2L38CMDFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/Lx/38M
- 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:
- 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L38CMDFP#31 FAQ
1.How can I place an order for R5F2L38CMDFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L38CMDFP#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 R5F2L38CMDFP#31 reliable?
The price and inventory of R5F2L38CMDFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L38CMDFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L38CMDFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L38CMDFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L38CMDFP#31?
R5F2L38CMDFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L38CMDFP#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 R5F2L38CMDFP#31?
For technical support, including R5F2L38CMDFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L38CMDFP#31 requirements.
6.How does Aetrix verify that R5F2L38CMDFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L38CMDFP#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 R5F2L38CMDFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L38CMDFP#31?
All R5F2L38CMDFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L38CMDFP#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 R5F2L38CMDFP#31 part is unused and in its original packaging.
Return procedure for R5F2L38CMDFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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