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Renesas R5F2L3A7BDFP#U1
- Part No.:
- R5F2L3A7BDFP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F2L3A7BDFP#U1.pdf
- Description:
- 16-BIT, FLASH, R8C CPU
- Quantity:
- Payment:
- Shipping:
Inventory:785
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Product details
Overview
R5F2L3A7BDFP#U1 from Renesas Electronics is an 88-pin LQFP 16-bit R8C/L3AA Group microcontroller with 48 KB flash ROM, 6 KB RAM, and integrated LCD controller supporting up to 8 common and 56 segment outputs. It features a 20 MHz max operating frequency (VCC = 2.7–5.5 V), 10-bit × 20-channel ADC, dual 8-bit DACs, hardware LIN interface, and operates across –40°C to +85°C for industrial appliance control.
For engineers reviewing the R5F2L3A7BDFP#U1 datasheet, R5F2L3A7BDFP#U1 pinout, R5F2L3A7BDFP#U1 application, or R5F2L3A7BDFP#U1 equivalent, key selection criteria include its full-featured LCD drive capability, BGO-enabled data flash (1 KB × 4 blocks), real-time clock (timer RE), and support for low-power stop mode (1 µA with timer RE enabled) in demanding embedded UI applications.
Technical Context
The R5F2L3A7BDFP#U1 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. It executes instructions in as little as 50 ns at 20 MHz and supports single-chip mode with 1 Mbyte address space.
Its peripheral set includes Timer RD (16-bit × 2, 6-pin PWM/reset-synchronous/complementary modes), UART0/1/2 (with I²C and LIN support), DTC (1 channel, 38 activation sources), and voltage-detection reset circuitry with selectable detection levels - all optimized for cost-sensitive, display-integrated consumer and industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 16×16→32-bit multiplier, and MAC instruction - enables efficient motor control and sensor fusion algorithms |
| Max Operating Frequency | 20 MHz at VCC = 2.7–5.5 V - supports real-time response in appliance UI and power management loops |
| Memory | 48 KB program flash ROM + 1 KB × 4 data flash with background operation (BGO) - allows firmware updates without halting system execution |
| ADC | 10-bit resolution × 20 channels with sample-and-hold and sweep mode - captures multi-sensor inputs (temperature, voltage, current) simultaneously |
| LCD Driver | Up to 8 COM / 56 SEG outputs with 1/2, 1/3, 1/4 bias and static/duty-cycle support - drives large-segment displays in thermostats and control panels |
| Low-Power Modes | Stop mode: 1 µA (timer RE enabled); power-off mode: 0.02 µA (timer RE disabled) - extends battery life in portable or energy-harvested devices |
| Operating Temperature | –40°C to +85°C (D version) - qualified for industrial environments including HVAC and factory HMI |
Pinout & Package
Package: 100-pin LQFP (PLQP0100JA-A). Pinout validated per Renesas R8C/L3AA Group specification document REJ03B0243-0030 Rev.0.30, Figures 1.17 and Table 1.15.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling for noise-sensitive LCD and analog peripherals |
| P00–P07 | Programmable I/O port | 8-bit port with LCD segment output capability (SEG0–SEG7) - directly drives front-panel display segments |
| P70–P73 | LCD common output | COM0–COM3 pins - provide multiplexed common electrode drive for up to 4-common LCDs |
| XT1, XT2 | External crystal oscillator input/output | Supports 20 MHz main clock (XIN) for high-speed processing and precise timing-critical functions |
| XCIN, XOUT | 32 kHz sub-clock oscillator | Enables accurate real-time clock (timer RE) and ultra-low-power wake-up from stop mode |
| RESET | Active-low reset input | Accepts external reset signal or internal voltage-detection reset - ensures reliable boot under brown-out conditions |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write during program execution - enables seamless field firmware upgrades without interrupting UI or control tasks |
| Hardware LIN Module | Dedicated LIN 2.0 transceiver interface using UART0 and timer RA - reduces MCU overhead for automotive body electronics integration |
| Real-Time Clock (Timer RE) | 8-bit counter with calendar mode (seconds/minutes/hours/days of week) - provides time-stamped logging and scheduled wake-up in energy-constrained systems |
| DTC (Data Transfer Controller) | 1-channel DMA with 38 activation sources - offloads ADC-to-memory transfers and UART buffering, freeing CPU for application logic |
| Voltage Detection Circuit | Configurable level detection (VD0/VD1) with reset and interrupt options - prevents erratic behavior during power supply sag or battery depletion |
Applications
| Home Appliance Control Panel | Industrial HMI Display Terminal |
|---|---|
|
Use Scenario: Microcontroller drives segmented LCD display, reads rotary encoder and push-button inputs, and controls relay-based heating/cooling cycles in smart ovens. IC Role / Device Role / Timing Role: Central system controller managing user interface, sensor acquisition, and actuator sequencing with real-time clock scheduling. Use Value: Integrated 56-segment LCD driver eliminates external display controller; BGO-enabled flash allows over-the-air UI updates without interrupting cooking operation. |
Use Scenario: Standalone panel-mounted terminal monitors machine status via analog sensors and displays diagnostics on a 4×16 segment LCD in factory automation. IC Role / Device Role / Timing Role: Embedded host processor executing local control logic, performing ADC-based condition monitoring, and maintaining time-stamped event logs. Use Value: 20-channel ADC captures multiple sensor inputs concurrently; stop-mode current of 1 µA enables long-term battery backup during maintenance downtime. |
| Smart Thermostat Interface | Energy Meter Front-End Controller |
|
Use Scenario: Controls 4-common, 32-segment LCD showing temperature setpoint, humidity, and schedule; interfaces with NTC thermistors and communicates via UART to HVAC controller. IC Role / Device Role / Timing Role: Dedicated UI and sensing subsystem with real-time clock for programmable heating schedules and wake-up timers. Use Value: Built-in 32 kHz sub-clock oscillator and timer RE deliver ±1 ppm accuracy over temperature; low-power stop mode extends CR2032 battery life beyond 2 years. |
Use Scenario: Front-end controller in DIN-rail energy meters acquires voltage/current samples via shunt/CT, computes RMS values, and drives LCD with tariff and consumption data. IC Role / Device Role / Timing Role: Signal acquisition and display co-processor handling analog front-end digitization and human-readable output independently of main meter SoC. Use Value: Dual 8-bit DACs generate reference voltages for precision ADC calibration; hardware LIN interface enables communication with legacy building management systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L3A8BDFP#U1 | 96 KB program ROM, 10 KB RAM - same package, pinout, and peripheral set | Required when application firmware exceeds 48 KB or demands larger data buffers for logging or protocol stacks | Select R5F2L3A8BDFP#U1 if future firmware growth or enhanced feature sets necessitate additional code space without layout change |
| R5F2L3ABBDFA#U0 | 100-pin LQFP, 128 KB ROM, 10 KB RAM, same D-temp grade - differs only in memory size and package variant (FA vs FP) | Suitable for designs requiring higher security or longer product lifecycle where larger ROM enables bootloader + application separation | Choose R5F2L3ABBDFA#U0 when migrating to production-grade footprint with extended memory headroom and identical thermal performance |
Compared with R5F2L3A7BDFP#U1, R5F2L3A8BDFP#U1 offers 48 KB more program ROM for complex UI or communication stacks, while R5F2L3ABBDFA#U0 adds 80 KB ROM and uses a different LQFP variant - both retain identical LCD, ADC, and low-power capabilities but require memory-aware firmware planning.
Availability
R5F2L3A7BDFP#U1 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI terminals, and smart thermostat interfaces requiring stable component supply, long-term industrial temperature qualification, and integrated LCD driving capability.
Supply support for R5F2L3A7BDFP#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/L3AA Group, including R5F2L3A7BDFP#U1, was designed for cost-optimized, display-centric embedded control in appliances and industrial HMIs - emphasizing integrated LCD drivers, low-power operation, and robust peripheral sets for rapid system integration.
FAQ
What is the maximum operating frequency of the R5F2L3A7BDFP#U1 and under what voltage conditions?
The R5F2L3A7BDFP#U1 achieves a maximum operating frequency of 20 MHz when powered at VCC = 2.7–5.5 V. At lower supply voltages (1.8–5.5 V), the maximum frequency is reduced to 5 MHz. This dual-voltage/frequency specification allows flexible power management in battery-operated or wide-input industrial systems while maintaining deterministic timing for real-time tasks.
Does the R5F2L3A7BDFP#U1 support background operation (BGO) for data flash writes?
Yes, the R5F2L3A7BDFP#U1 supports background operation (BGO) for its 1 KB × 4 data flash blocks. This allows firmware to execute application code while simultaneously erasing or programming data flash - essential for implementing non-disruptive parameter storage, field firmware updates, or secure key management without halting system operation.
What LCD display configurations does the R5F2L3A7BDFP#U1 support?
The R5F2L3A7BDFP#U1 supports up to 8 common and 56 segment outputs with selectable bias (1/2, 1/3, 1/4) and duty cycle (static, 1/2, 1/3, 1/4, 1/8). It integrates a dedicated voltage multiplier and regulator, enabling direct drive of multiplexed LCDs without external components - ideal for thermostats, control panels, and instrumentation displays.
How many analog input channels does the R5F2L3A7BDFP#U1 ADC provide?
The R5F2L3A7BDFP#U1 integrates a 10-bit successive-approximation ADC with 20 configurable analog input channels. It includes sample-and-hold functionality and sweep mode for automatic sequential conversion - enabling simultaneous monitoring of multiple sensors such as temperature, voltage, current, and potentiometer position in appliance and industrial control applications.
What low-power modes are available on the R5F2L3A7BDFP#U1 and their typical current consumption?
The R5F2L3A7BDFP#U1 supports wait, stop, and power-off modes. Typical current draw is 3.5 µA in wait mode (32 kHz sub-clock active), 2 µA in stop mode, 1 µA in power-off mode with timer RE enabled, and 0.02 µA in power-off mode with timer RE disabled. These modes enable multi-year battery life in always-on display applications like smart thermostats.
R5F2L3A7BDFP#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-LQFP
- Series:
- -
- 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:
- 88
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 20x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L3A7BDFP#U1 FAQ
1.How can I place an order for R5F2L3A7BDFP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L3A7BDFP#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 R5F2L3A7BDFP#U1 reliable?
The price and inventory of R5F2L3A7BDFP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L3A7BDFP#U1 is usually 5 days.
3.What payment methods are accepted for R5F2L3A7BDFP#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L3A7BDFP#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L3A7BDFP#U1?
R5F2L3A7BDFP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L3A7BDFP#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 R5F2L3A7BDFP#U1?
For technical support, including R5F2L3A7BDFP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L3A7BDFP#U1 requirements.
6.How does Aetrix verify that R5F2L3A7BDFP#U1 is sourced from the original manufacturer or authorized distributors?
All R5F2L3A7BDFP#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 R5F2L3A7BDFP#U1 meets industry standards.
7.What is the process for return or replacement of R5F2L3A7BDFP#U1?
All R5F2L3A7BDFP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L3A7BDFP#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 R5F2L3A7BDFP#U1 part is unused and in its original packaging.
Return procedure for R5F2L3A7BDFP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F2L3A7BDFP#U1 Tags
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