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Renesas R5F2L3A7BNFA#U1
- Part No.:
- R5F2L3A7BNFA#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-BQFP
- Datasheet:
-
R5F2L3A7BNFA#U1.pdf
- Description:
- 16-BIT, FLASH, R8C CPU
- Quantity:
- Payment:
- Shipping:
Inventory:1,503
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Product details
Overview
R5F2L3A7BNFA#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, and real-time clock (Timer RE) for household appliance control and industrial HMI applications.
For engineers reviewing the R5F2L3A7BNFA#U1 datasheet, R5F2L3A7BNFA#U1 pinout, R5F2L3A7BNFA#U1 application, or R5F2L3A7BNFA#U1 equivalent, key selection criteria include its -40°C to +85°C D-version temperature rating, background operation (BGO) data flash capability, LIN bus hardware support via UART0+Timer RA, and low-power stop mode (2 µA typical).
Technical Context
The R5F2L3A7BNFA#U1 implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit hardware multiplier. Its memory subsystem includes 48 KB program flash (1,000 write/erase cycles) and 6 KB SRAM, with no data flash-distinguishing it from A-variant groups (e.g., R8C/L35A) that include 1 KB × 4 blocks with BGO.
It integrates eight peripheral timer modules (RA–RG), dual UARTs (UART0/UART1), I²C-bus/Synchronous Serial Unit (SSU), hardware LIN, 10-bit 20-channel ADC with sweep mode, two 8-bit DACs, dual comparators, and a full-featured LCD controller with integrated voltage multiplier and regulator-enabling direct drive of multiplexed LCDs up to 8×56 segments.
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, 16×16→32-bit multiplier |
| Memory | 48 KB flash ROM (1,000 erase cycles), 6 KB RAM - no data flash; differs from A-group variants |
| Operating Range | -40°C to +85°C (D version), 1.8–5.5 V supply - supports industrial ambient conditions |
| ADC | 10-bit resolution × 20 channels with sample-and-hold and sweep mode - enables multi-sensor monitoring |
| LCD Controller | Supports up to 8 COM / 56 SEG outputs, 1/2–1/4 bias, static–1/8 duty - drives large-segment displays without external bias IC |
| Low-Power Modes | Stop mode: 2 µA typical (VCC = 3.0 V); power-off mode: 1 µA (timer RE enabled) - extends battery life in portable HMIs |
| Peripheral Integration | Hardware LIN (UART0 + Timer RA), I²C-bus, SSU, UART0/UART1, Timer RE RTC - reduces external component count for appliance UIs |
Pinout & Package
Package: 100-pin LQFP (PLQP0100KB-A), 14 mm × 14 mm, 0.5 mm pitch, exposed pad (thermal enhancement). Pinout validated per Renesas document REJ03B0243-0030 Figures 1.16–1.17 and Tables 1.12–1.15 for R8C/L3AA Group.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core/peripheral rail decoupling; exposed pad improves thermal dissipation |
| P00–P07 | Programmable I/O port | Segment output (SEG0–SEG7) capable; configurable as general-purpose I/O or LCD segment drivers |
| P70–P73 | Programmable I/O port | Common output (COM0–COM3); supports up to 8 COM lines when combined with P12/P13 pins |
| P120–P123 | Programmable I/O port | VL1–VL4 LCD bias voltage outputs; integrated regulator eliminates need for external charge pump |
| XIN/XOUT | External crystal oscillator input/output | Supports 20 MHz crystal for high-speed operation; XIN clock stop detection enables fail-safe recovery |
| XCIN/XCOUT | 32 kHz sub-clock oscillator | Enables RTC operation and ultra-low-power wake-up during stop/power-off modes |
| RESET | Active-low reset input | Includes built-in power-on reset and voltage detection circuit (VDD monitor level selectable) |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Full LIN 2.0/2.1 compliance using UART0 and Timer RA - eliminates software bit-banging overhead in appliance motor control networks |
| Integrated LCD Power Management | Voltage multiplier + dedicated regulator on-chip - delivers required VL1–VL4 bias voltages directly, reducing BOM by ≥3 external components |
| Real-Time Clock (Timer RE) | Counts seconds/minutes/hours/days-of-week with alarm interrupt - enables calendar-based scheduling in smart appliances without external RTC IC |
| Background Operation (BGO) | Not supported - this is a B-group part (R8C/L3AB), unlike A-group parts which include BGO-enabled data flash |
| Dual 8-bit DACs | Independent voltage outputs with programmable reference - suitable for analog sensor calibration or audio tone generation in consumer UIs |
| High-Current Drive Ports | 16 pins rated for 20 mA sink/source - directly drive LEDs or small relays without external drivers in HMI panels |
Applications
| Refrigerator Control Panel | Industrial Temperature Controller |
|---|---|
|
Use Scenario: Real-time display of setpoint, current temperature, defrost status, and energy mode on segmented LCD. IC Role / Device Role / Timing Role: Primary MCU executing control logic, driving 8×32 LCD, sampling thermistor ADC inputs, and managing LIN-connected compressor module. Use Value: Integrated LCD controller and 20-channel ADC eliminate external display driver and analog front-end ICs, reducing board area by ~25%. |
Use Scenario: Local PID loop execution with 4–20 mA output, keypad input scanning, and alarm-triggered relay actuation. IC Role / Device Role / Timing Role: System controller handling analog I/O, 16-key matrix scan, real-time clock logging, and isolated RS-485 communication via external transceiver. Use Value: 16 high-current I/O pins drive LEDs and relays directly; Timer RD's complementary PWM supports precise 4–20 mA DAC output with <1% linearity error. |
| Smart Washing Machine UI | Commercial Coffee Maker Display |
|
Use Scenario: Multi-stage cycle progress visualization, water level sensing, and fault code reporting on 8×48 segment LCD. IC Role / Device Role / Timing Role: Dedicated UI processor managing LCD refresh, capacitive touch key detection (via comparator A/B), and LIN communication with main MCU. Use Value: On-chip voltage multiplier powers full 8×48 LCD from single 3.3 V rail - avoids discrete boost converter and saves 30 mm² PCB space. |
Use Scenario: Brew time countdown, temperature bar graph, and maintenance alerts on 8×56 segment display with backlight dimming. IC Role / Device Role / Timing Role: Standalone display controller interfacing with main MCU via UART, generating PWM for LED backlight dimming, and monitoring thermistor inputs. Use Value: Dual 8-bit DACs provide smooth 0–3.3 V analog backlight control; Timer RB's programmable waveform generator enables flicker-free dimming at 1 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L3AA2DNFA#U0 | Same R8C/L3AA Group, 96 KB ROM, 10 KB RAM, D-version - higher memory capacity, identical pinout and peripherals | Required for firmware with >48 KB code footprint or extended data logging buffers | Select when larger program memory or RAM is needed without changing PCB layout or driver software |
| R5F2L3AB2DNFA#U0 | R8C/L3AB Group - adds data flash (1 KB × 4 blocks with BGO), same 48 KB ROM, 6 KB RAM, D-version, identical package | Needed for field firmware updates or parameter storage requiring background reprogramming | Choose only if BGO data flash functionality is essential; otherwise R5F2L3A7BNFA#U1 offers lower cost and same core capability |
Compared with R5F2L3A7BNFA#U1, R5F2L3AA2DNFA#U0 provides 48 KB more ROM and 4 KB more RAM for complex UI logic, while R5F2L3AB2DNFA#U0 adds BGO-capable data flash for safe over-the-air updates - neither offers improved LCD or ADC performance, making R5F2L3A7BNFA#U1 optimal for cost-sensitive, fixed-function HMI designs.
Availability
R5F2L3A7BNFA#U1 is available at Aetrix Electronics and suitable for refrigerator control panels, industrial temperature controllers, smart washing machine UIs, and commercial coffee maker displays requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for R5F2L3A7BNFA#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 industrial, automotive, and consumer markets.
The R8C/L3AA Group, including R5F2L3A7BNFA#U1, was designed for cost-optimized human-machine interface applications requiring integrated LCD driving, rich analog I/O, and robust communication interfaces in compact appliances and industrial controls.
FAQ
What is the operating temperature range for R5F2L3A7BNFA#U1?
R5F2L3A7BNFA#U1 is a D-version device rated for -40°C to +85°C ambient operation, making it suitable for industrial environments and outdoor-appliance applications where extended thermal stability is required. This specification is confirmed in Table 1.7 of Renesas document REJ03B0243-0030 and applies to all R8C/L3AA and R8C/L3AB Group parts with 'D' suffix.
Does R5F2L3A7BNFA#U1 include data flash memory?
No, R5F2L3A7BNFA#U1 does not include data flash memory. As a B-group variant (R8C/L3AB), it omits the 1 KB × 4 data flash with background operation (BGO) found in A-group parts like R5F2L357ANFP. Its 48 KB program flash supports 1,000 erase cycles but lacks dedicated data storage with BGO capability.
Which package type is used for R5F2L3A7BNFA#U1?
R5F2L3A7BNFA#U1 uses a 100-pin LQFP package (PLQP0100KB-A), measuring 14 mm × 14 mm with 0.5 mm pitch and an exposed thermal pad. This matches the R8C/L3AA Group package designation confirmed in Table 1.12 and Figure 1.16 of Renesas document REJ03B0243-0030.
Can R5F2L3A7BNFA#U1 drive a 8×56 segment LCD directly?
Yes, R5F2L3A7BNFA#U1 integrates a full LCD controller supporting up to 8 common and 56 segment outputs, with on-chip voltage multiplier and regulator supplying VL1–VL4. No external bias IC or charge pump is required, enabling direct drive of large-segment displays typical in premium home appliances.
What communication interfaces are supported by R5F2L3A7BNFA#U1?
R5F2L3A7BNFA#U1 supports UART0 and UART1 (clock-synchronous serial I/O/UART), UART2 with I²C-bus mode, Synchronous Serial Unit (SSU), hardware LIN (using UART0 + Timer RA), and I²C-bus (shared with SSU). These interfaces enable connectivity to sensors, displays, and distributed control nodes in appliance systems.
R5F2L3A7BNFA#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-BQFP
- 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:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L3A7BNFA#U1 FAQ
1.How can I place an order for R5F2L3A7BNFA#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L3A7BNFA#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 R5F2L3A7BNFA#U1 reliable?
The price and inventory of R5F2L3A7BNFA#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L3A7BNFA#U1 is usually 5 days.
3.What payment methods are accepted for R5F2L3A7BNFA#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L3A7BNFA#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L3A7BNFA#U1?
R5F2L3A7BNFA#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L3A7BNFA#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 R5F2L3A7BNFA#U1?
For technical support, including R5F2L3A7BNFA#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L3A7BNFA#U1 requirements.
6.How does Aetrix verify that R5F2L3A7BNFA#U1 is sourced from the original manufacturer or authorized distributors?
All R5F2L3A7BNFA#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 R5F2L3A7BNFA#U1 meets industry standards.
7.What is the process for return or replacement of R5F2L3A7BNFA#U1?
All R5F2L3A7BNFA#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L3A7BNFA#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 R5F2L3A7BNFA#U1 part is unused and in its original packaging.
Return procedure for R5F2L3A7BNFA#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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