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Renesas R5F2L357CDFP#31
- Part No.:
- R5F2L357CDFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F2L357CDFP#31.pdf
- Description:
- 16BIT MCU R8C/L35C ROM48K/RAM6K
- Quantity:
- Payment:
- Shipping:
Inventory:4,338
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Product details
Overview
R5F2L357CDFP#31 from Renesas Electronics is a 16-bit R8C/L35C Group microcontroller with 48 KB flash program memory, 6 KB RAM, and 1 KB × 4 data flash supporting background operation (BGO). It features a 41-pin programmable I/O interface, 10-channel 10-bit ADC, dual 8-bit DACs, LCD drive (up to 4 COM / 24 SEG), and integrated LIN module - optimized for cost-sensitive, low-power appliance control applications.
For engineers reviewing the R5F2L357CDFP#31 datasheet, R5F2L357CDFP#31 pinout, R5F2L357CDFP#31 application, or R5F2L357CDFP#31 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade, 52-pin LQFP package (PLQP0052JA-A), 20 MHz max operating frequency at 2.7–5.5 V, and dedicated hardware support for LCD segment driving and LIN bus communication.
Technical Context
The R5F2L357CDFP#31 implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit hardware multiplier, enabling efficient real-time control in resource-constrained systems. Its system clock generation includes four independent circuits: XIN oscillator (up to 20 MHz), XCIN 32 kHz crystal input, high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all selectable via software for dynamic power management.
Peripheral integration centers on mixed-signal timing and human-interface functions: Timer RA/RB provide basic PWM and event counting; Timer RC supports 3-pin PWM output; Timer RE delivers real-time clock functionality; and the DTC enables autonomous data transfers triggered by 38 sources - reducing CPU load during sensor acquisition or display refresh cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min instruction time at 20 MHz - enables deterministic real-time response in appliance motor control loops. |
| Memory | 48 KB flash ROM + 1 KB × 4 data flash with BGO - allows firmware updates and parameter storage without halting application execution. |
| ADC | 10-bit resolution × 10 channels with sample-and-hold and sweep mode - supports simultaneous multi-sensor monitoring (e.g., temperature, voltage, current) in HVAC systems. |
| LCD Driver | Max 4 common / 24 segment outputs, 1/2 or 1/3 bias, static/1/2/1/3/1/4 duty - drives 6-digit 7-segment or small character displays in microwave ovens or coffee makers. |
| Operating Temp | -40°C to +85°C (D version) - qualified for industrial-grade reliability in embedded white goods and office equipment environments. |
| Package | 52-pin LQFP (PLQP0052JA-A, 0.65 mm pitch) - standard surface-mount footprint compatible with automated assembly and thermal management in compact PCB layouts. |
| Power Modes | Wait (3.5 µA @ 3.0 V, 32 kHz), stop (2 µA), power-off (0.02 µA) - extends battery life in standby or remote-control receiver subsystems. |
Pinout & Package
52-pin LQFP package (PLQP0052JA-A, 10 mm × 10 mm, 0.65 mm pitch), RoHS-compliant, with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Programmable I/O / SEG0–SEG7 / AN4–AN9 | Primary segment driver pins for LCD; also serve as analog inputs for front-panel sensors or user interface feedback. |
| P7_4–P7_7 | COM0–COM3 | Dedicated common electrode outputs for multiplexed LCD driving - enable 1/4-duty static or dynamic display operation. |
| P13_0/P13_1 | AN0/DA0, AN1/DA1 | Shared analog input / 8-bit DAC output pins - support closed-loop analog control (e.g., heater voltage regulation) with direct feedback sensing. |
| P11_0–P11_3 | SCL/SSCK, SSI, SDA/SSO, SCS | Configurable serial interface pins supporting I²C, SPI, and UART modes - simplify connection to touch controllers or EEPROMs. |
| XIN/XOUT | External crystal oscillator input/output | Supports precise 20 MHz system clock for timing-critical functions like motor commutation or audio sampling. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable initialization after power-on or brown-out events. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write while executing code - enables seamless field firmware updates without interrupting appliance runtime behavior. |
| Hardware LIN Module | Integrated LIN 2.0 transceiver using Timer RA and UART0 - eliminates external transceiver IC for cost-sensitive sub-system communication (e.g., door lock to main controller). |
| Voltage Detection Circuit | Programmable reset and voltage detection levels (VDD monitor) - prevents erratic operation during brown-out conditions in unregulated AC-DC power supplies. |
| High-Current Drive Ports | 5 pins capable of 20 mA sink/source - directly drive LEDs, relays, or buzzer loads without external drivers in control panels. |
| On-Chip Debug Interface | Fully integrated debug circuit with single-wire trace - reduces development cycle time via real-time variable inspection and breakpoint debugging. |
Applications
| Microwave Oven Control Panel | Air Conditioner Indoor Unit |
|---|---|
|
Use Scenario: Real-time monitoring of keypad inputs, display refresh, temperature sensing, and relay actuation for cooking cycles and safety interlocks. IC Role / Device Role / Timing Role: Primary system controller managing LCD segments (P0/P7), ADC sampling (AN0–AN9), and high-current relay drivers (P11/P12). Use Value: Integrated LCD driver and 10-channel ADC eliminate 3 external ICs; BGO enables silent firmware patching during idle periods. |
Use Scenario: Fan speed control, indoor temperature/humidity reading, IR remote decoding, and communication with outdoor unit via LIN bus. IC Role / Device Role / Timing Role: Central MCU handling PWM fan control (Timer RB), LIN protocol stack (hardware-assisted), and multi-sensor fusion (ADC + DAC). Use Value: Hardware LIN module reduces BOM cost and EMI vs. discrete transceivers; -40°C rating ensures startup reliability in cold climates. |
| Printer Paper Jam Sensor System | Coffee Maker Brew Cycle Manager |
|
Use Scenario: Detecting paper position via optical sensors, controlling stepper motor feed, and updating segmented LCD status indicators. IC Role / Device Role / Timing Role: Dedicated subsystem controller interfacing optical interrupters (ADC), driving 7-segment display (SEG0–SEG7/COM0–COM3), and generating precise motor step timing (Timer RC). Use Value: 24-segment LCD support replaces custom LED arrays; 5 high-current I/O pins directly drive indicator LEDs without resistors. |
Use Scenario: Monitoring water temperature (NTC), controlling heating element (TRIAC gate), dispensing pump, and displaying brew progress on 4-digit LCD. IC Role / Device Role / Timing Role: Embedded timing controller executing PID loop (multiplier acceleration), ADC sampling at 100 Hz, and synchronized LCD update (Timer RE + LCD clock). Use Value: On-chip 16×16 multiplier accelerates temperature compensation math; data flash stores calibration coefficients across power cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L358CDFP#31 | 64 KB program ROM (vs. 48 KB), same package/peripherals - no change in pinout or clock architecture. | Required when firmware exceeds 48 KB due to added connectivity (e.g., BLE stack integration) or enhanced UI logic. | Select if future firmware growth headroom is needed; identical hardware design and qualification path. |
| R5F2L367CDFP#30 | 52-pin LQFP, but R8C/L36C Group: adds Timer RD (6-pin PWM), 12 I/O ports (vs. 41), 8-key interrupt inputs, and 32-segment LCD support. | Suitable for next-generation appliances requiring more complex display (e.g., graphic LCD with touch overlay) or multi-motor control. | Choose when expanding peripheral count is critical; requires PCB layout revision due to different pin assignment and higher I/O density. |
Compared with R5F2L357CDFP#31, R5F2L358CDFP#31 offers immediate firmware scalability within identical hardware, while R5F2L367CDFP#30 provides expanded peripheral capability at the cost of board redesign - making the R5F2L357CDFP#31 optimal for stable, cost-optimized production of established appliance models.
Availability
R5F2L357CDFP#31 is available at Aetrix Electronics and suitable for household appliance control, office equipment HMI, and consumer electronics requiring stable component supply across extended production lifecycles.
Supply support for R5F2L357CDFP#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, and power solutions for automotive, industrial, and IoT markets.
The R8C/L35C Group was designed specifically for cost-sensitive, low-power embedded control in white goods and consumer appliances - emphasizing integrated LCD driving, robust EMI/EMS performance, and long-term supply stability.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F2L357CDFP#31?
The R5F2L357CDFP#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 for ultra-low-power modes. This dual-voltage/frequency capability allows flexible power optimization in battery-backed or wide-input AC-DC systems without compromising real-time responsiveness.
Does the R5F2L357CDFP#31 support in-system programming and debug?
Yes, the R5F2L357CDFP#31 includes an on-chip debug function accessible via single-wire interface, enabling full in-circuit debugging, flash programming, and real-time trace without requiring external emulators. This capability streamlines development and field firmware updates for the R5F2L357CDFP#31 in production environments.
How many analog input channels does the R5F2L357CDFP#31 have, and what is their resolution?
The R5F2L357CDFP#31 integrates a 10-bit successive-approximation ADC with 10 dedicated analog input channels (AN0–AN9), supporting sample-and-hold and automatic channel sweep mode. This enables concurrent monitoring of multiple sensors - such as thermistors, potentiometers, or current shunts - with consistent 10-bit precision across the full 0–VREF range.
Can the R5F2L357CDFP#31 drive an LCD display directly, and what are its limitations?
Yes, the R5F2L357CDFP#31 includes a dedicated LCD drive control circuit supporting up to 4 common and 24 segment outputs, with selectable 1/2 or 1/3 bias and static/1/2/1/3/1/4 duty cycles. It cannot support 1/8 duty or VL3-based 1/4 bias due to missing VL3 pin - limiting it to simpler character or numeric displays rather than high-segment graphic panels.
What is the purpose of the data flash memory in the R5F2L357CDFP#31, and how is it used?
The R5F2L357CDFP#31 includes 1 KB × 4 blocks of data flash memory rated for 10,000 erase/write cycles, supporting background operation (BGO) to read/execute code while programming. It is typically used to store calibration data, user preferences, error logs, or firmware update payloads - ensuring non-volatile retention across power cycles without requiring external EEPROM.
R5F2L357CDFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/Lx/35C
- 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:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 10x10b; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L357CDFP#31 FAQ
1.How can I place an order for R5F2L357CDFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L357CDFP#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 R5F2L357CDFP#31 reliable?
The price and inventory of R5F2L357CDFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L357CDFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L357CDFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L357CDFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L357CDFP#31?
R5F2L357CDFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L357CDFP#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 R5F2L357CDFP#31?
For technical support, including R5F2L357CDFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L357CDFP#31 requirements.
6.How does Aetrix verify that R5F2L357CDFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L357CDFP#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 R5F2L357CDFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L357CDFP#31?
All R5F2L357CDFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L357CDFP#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 R5F2L357CDFP#31 part is unused and in its original packaging.
Return procedure for R5F2L357CDFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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