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Renesas R5F2L35CMDFP#31
- Part No.:
- R5F2L35CMDFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F2L35CMDFP#31.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F2L35CMDFP#31 from Renesas Electronics is a 16-bit R8C CPU core microcontroller in the R8C/L35M 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 (max 4 COM / 24 SEG), 10-bit × 12-channel ADC, dual 8-bit DACs, and LIN bus via UART0 + Timer RA - deployed in appliance control panels requiring low EMI and robust I/O.
For engineers reviewing the R5F2L35CMDFP#31 datasheet, R5F2L35CMDFP#31 pinout, R5F2L35CMDFP#31 application, or R5F2L35CMDFP#31 equivalent, key selection criteria include its -40°C to +85°C D-version operating range, 52-pin LQFP package with 41 programmable I/Os (5 high-current), integrated voltage detection and real-time clock (Timer RE), and compatibility with Renesas' on-chip debug and flash rewrite functions.
Technical Context
The R5F2L35CMDFP#31 implements the R8C CPU core with 89 fundamental instructions and single-chip 1 Mbyte address space. Its clock system includes XIN/XOUT (up to 20 MHz), XCIN/XCOUT (32 kHz), high-speed and low-speed on-chip oscillators, and a programmable frequency divider (1/2/4/8/16).
Peripheral integration includes Timer RA–RG (8- to 16-bit), UART0/1/2 (with I²C mode), SSU, DTC (1 channel, 38 activation sources), watchdog timer (14-bit with prescaler), and LCD controller supporting static/1/2/1/3/1/4 duty and 1/2 or 1/3 bias - constrained by absence of VL3 pin, excluding 1/4 bias and internal voltage multiplier use.
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 ROM, 10 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO support |
| Operating Range | -40°C to +85°C (D version), 1.8–5.5 V supply voltage, with voltage detection circuit |
| ADC | 10-bit resolution × 12 channels with sample-and-hold and sweep mode |
| Timers | Timer RA/RB (8-bit), RC/RD/RG (16-bit), RE (8-bit RTC), plus watchdog (14-bit) |
| I/O Ports | 41 programmable CMOS I/O pins, 5 high-current drive ports, selectable pull-up resistors |
| LCD Driver | Max 4 common outputs and 24 segment outputs; supports static, 1/2, 1/3, 1/4 duty; 1/2 or 1/3 bias only |
Pinout & Package
Package: 52-pin LQFP (PLQP0052JA-A, 0.65 mm pitch), 10 × 10 mm body, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Segment/Analog I/O | SEG0–SEG7 and AN4–AN11; shared LCD segment and ADC inputs |
| P7_4–P7_7 | LCD Common Outputs | COM0–COM3; dedicated for LCD multiplexing up to 1/4 duty |
| P11_0–P11_3 | Serial Interface | SCL/SDA/SSI/SCS for I²C, UART2, and LIN module coordination |
| XIN/XOUT | External Clock Input | Supports crystal or external oscillator up to 20 MHz for precise timing |
| RESET | Active-low Reset | Asynchronous reset input with internal pull-up; triggers power-on and voltage-detect reset |
| VCC/AVCC | Power Supply | Digital and analog supply pins; require separate decoupling for noise-sensitive ADC/LCD operation |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent data flash erase/write and program execution - critical for firmware updates without halting control loops |
| Integrated LIN Module | Hardware LIN 2.1 support using UART0 and Timer RA - eliminates software bit-banging and ensures protocol compliance |
| Low-Power Modes | Wait (3.5 µA), stop (2 µA), and power-off (0.02 µA with Timer RE disabled) - extends battery life in portable appliances |
| EMI/EMS Optimized Design | On-die layout and clock gating reduce radiated emissions - simplifies CE/FCC certification for consumer end equipment |
| On-Chip Debug & Flash Rewrite | Full in-system programming and debugging via single-wire interface - reduces production test time and field firmware patching cost |
Applications
| Appliance Control Panel | Home Audio System |
|---|---|
Use Scenario: Microcontroller manages button matrix, LED/LCD display, motor speed control, and temperature sensing in washing machine or microwave UI. IC Role / Device Role / Timing Role: Central control unit executing real-time state machine, driving 4×24-segment LCD, sampling 12 analog sensors, and generating PWM for motor drivers. Use Value: Integrated LCD driver and 12-channel ADC eliminate external components; BGO enables silent firmware updates during standby. | Use Scenario: Controls volume, source selection, equalizer settings, and display in compact stereo receivers or soundbars. IC Role / Device Role / Timing Role: Manages rotary encoder inputs, drives 2-line character LCD, interfaces with audio DACs via I²C, and logs user preferences to data flash. Use Value: Dual 8-bit DACs provide local audio tone control; LIN-capable UART allows daisy-chain expansion to remote subwoofers or IR receivers. |
| Office Equipment Keypad | Industrial Sensor Node |
Use Scenario: Embedded in multifunction printer control panel handling key scan, status LEDs, buzzer feedback, and USB host communication. IC Role / Device Role / Timing Role: Scans 4×4 keypad matrix using P0/P2 I/Os, drives buzzer via Timer RB PWM, and routes USB signals via UART2 in I²C mode for bridge ICs. Use Value: 41 I/Os accommodate full keypad + indicators; high-current ports directly drive LEDs without external transistors. | Use Scenario: Monitors environmental parameters (temp/humidity/air quality) in smart building nodes with battery backup. IC Role / Device Role / Timing Role: Samples analog sensors at 10-bit resolution, stores calibrated data in data flash, wakes periodically via Timer RE, and transmits via UART to gateway. Use Value: 0.02 µA power-off mode with Timer RE disabled maximizes 10-year battery life; voltage detection prevents brown-out data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L35AMDFP#31 | 96 KB program ROM, same 10 KB RAM, identical peripherals and pinout | Lower code density margin; suitable for simpler UI logic without complex algorithms | Select when firmware size < 96 KB and cost optimization is prioritized over future feature expansion |
| R5F2L36CMDFP#30 | 128 KB ROM, 52-pin LQFP, but 52 I/Os (8 high-current), 12-channel ADC, no VL3 pin limitation | Higher I/O count and enhanced LCD drive (8 COM / 32 SEG); requires PCB redesign | Choose for next-gen designs needing more GPIOs or larger segmented displays without changing MCU architecture |
Compared with R5F2L35AMDFP#31, the R5F2L35CMDFP#31 provides 32 KB additional flash for advanced UI features or safety routines; versus R5F2L36CMDFP#30, it trades I/O count and LCD scale for pin-compatible drop-in replacement in legacy 52-pin layouts with tighter board space.
Availability
R5F2L35CMDFP#31 is available at Aetrix Electronics and suitable for appliance control panels, home audio systems, office equipment keypads, and industrial sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for R5F2L35CMDFP#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/L35M Group targets cost-sensitive, EMI-critical consumer and industrial control applications, emphasizing integrated LCD/ADC/DAC, ultra-low-power modes, and on-chip debug - enabling rapid development of certified, maintenance-friendly embedded systems.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F2L35CMDFP#31?
The R5F2L35CMDFP#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 design adaptation to both high-performance and ultra-low-power modes while maintaining full peripheral functionality across the specified industrial temperature range (-40°C to +85°C).
Does the R5F2L35CMDFP#31 support hardware LIN communication?
Yes, the R5F2L35CMDFP#31 includes a dedicated hardware LIN module compliant with LIN 2.1, implemented using UART0 and Timer RA. This offloads protocol timing and error checking from firmware, ensuring deterministic frame transmission and reducing CPU overhead - essential for reliable communication in appliance motor control networks.
How many analog input channels does the R5F2L35CMDFP#31 ADC support, and what is its resolution?
The R5F2L35CMDFP#31 integrates a 10-bit successive-approximation ADC with 12 input channels (AN0–AN11), including sample-and-hold and hardware sweep mode. All channels are accessible via P0 and P13 pins, enabling simultaneous monitoring of multiple sensors - such as thermistors, potentiometers, or current shunts - without external multiplexing.
Can the R5F2L35CMDFP#31 drive an LCD display, and what are its LCD limitations?
Yes, the R5F2L35CMDFP#31 includes an integrated LCD controller supporting up to 4 common outputs and 24 segment outputs. Due to absence of the VL3 pin, it supports only 1/2 or 1/3 bias configurations and cannot use the internal voltage multiplier - limiting duty cycle options to static, 1/2, 1/3, or 1/4, but excluding 1/4 bias operation.
What debug and programming interfaces are supported by the R5F2L35CMDFP#31?
The R5F2L35CMDFP#31 supports Renesas' single-wire on-chip debug interface (OCDS) for full-featured emulation, breakpoint setting, and real-time variable inspection. It also enables in-system programming via the same interface, allowing field firmware updates and eliminating the need for external programmers during production or service.
R5F2L35CMDFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/Lx/35M
- 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:
- 41
- 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 12x10b; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L35CMDFP#31 FAQ
1.How can I place an order for R5F2L35CMDFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L35CMDFP#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 R5F2L35CMDFP#31 reliable?
The price and inventory of R5F2L35CMDFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L35CMDFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L35CMDFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L35CMDFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L35CMDFP#31?
R5F2L35CMDFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L35CMDFP#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 R5F2L35CMDFP#31?
For technical support, including R5F2L35CMDFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L35CMDFP#31 requirements.
6.How does Aetrix verify that R5F2L35CMDFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L35CMDFP#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 R5F2L35CMDFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L35CMDFP#31?
All R5F2L35CMDFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L35CMDFP#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 R5F2L35CMDFP#31 part is unused and in its original packaging.
Return procedure for R5F2L35CMDFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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