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Renesas R5F2L3ACCNFA#U1
- Part No.:
- R5F2L3ACCNFA#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-BQFP
- Datasheet:
-
R5F2L3ACCNFA#U1.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,518
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Product details
Overview
R5F2L3ACCNFA#U1 from Renesas is a 16-bit R8C/L3AC Group microcontroller featuring an R8C CPU core, 128 KB program flash, 10 KB RAM, and integrated LCD drive (max. 8 COM / 56 SEG), 20-channel 10-bit ADC, dual 8-bit DACs, and LIN bus support. It operates at up to 20 MHz (50 ns min. instruction time) with 88 programmable I/O pins and 16 high-current drive ports, targeting embedded control in appliance front panels.
For engineers reviewing the R5F2L3ACCNFA#U1 datasheet, R5F2L3ACCNFA#U1 pinout, R5F2L3ACCNFA#U1 application, or R5F2L3ACCNFA#U1 equivalent, key selection criteria include its 100-pin QFP package, -20°C to +85°C N-version temperature grade, background operation (BGO) data flash, real-time clock (timer RE), and hardware LIN module requiring UART0 and timer RA.
Technical Context
The R5F2L3ACCNFA#U1 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory architecture includes 128 KB on-chip flash (1,000 write/erase cycles), 1 KB × 4 data flash with BGO, and 10 KB RAM - enabling firmware updates without halting execution.
Peripheral integration centers on mixed-signal timing and display control: Timer RD supports three-phase PWM (6-pin complementary output), Timer RG enables phase counting, and the LCD controller integrates voltage multiplier and regulator for bias generation. Clock sources include XIN (up to 20 MHz), XCIN (32 kHz), and tunable on-chip oscillators.
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 UI control loops. |
| Memory | 128 KB program flash, 10 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO - supports field firmware updates while maintaining LCD refresh or sensor polling. |
| ADC/DAC | 10-bit resolution × 20 channels with sample-and-hold and sweep mode; 8-bit × 2 DACs - sufficient for multi-zone temperature sensing and analog actuator control in HVAC interfaces. |
| LCD Driver | Max. 8 common outputs / 56 segment outputs; integrated voltage multiplier & regulator - drives large character/segment displays without external bias circuitry. |
| Timers | Timer RD (16-bit × 2) with 6-pin complementary PWM; Timer RE (real-time clock); Timer RG (phase counting) - enables motor control, timekeeping, and encoder interfacing in single-chip designs. |
| I/O & Interfaces | 88 programmable CMOS I/O pins (16 high-current), UART0/1/2 (I²C/LIN-capable), DTC, watchdog timer - reduces external logic for appliance HMI and communication subsystems. |
Pinout & Package
Package: 100-pin QFP (PRQP0100JD-B), 0.65 mm pitch, body size 14 × 20 mm, lead count 100, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | SEG0–SEG7 / AN4–AN9 | Segment outputs for LCD; also serve as analog inputs - enables shared pin usage for display and sensor monitoring in space-constrained front panels. |
| P1_0–P1_7 | SEG8–SEG15 / AN12–AN15 | Additional LCD segments and analog inputs - extends display capability to 56 segments while supporting up to 20 analog channels. |
| P7_0–P7_7 | SEG52–SEG55 / COM0–COM3 | Common outputs and extended segment drivers - provides full 8-COM support required for multiplexed LCDs in consumer appliance displays. |
| P13_0/P13_1 | AN0/DA0, AN1/DA1 | Shared analog input / DAC output pins - allows simultaneous voltage measurement and analog output generation (e.g., heater reference voltage). |
| VL1–VL4, CL1, CL2 | LCD bias supply & clock | Dedicated pins for internal voltage multiplier control and LCD clocking - eliminates need for external charge pumps or timing ICs in display subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write during program execution - enables seamless firmware patching without interrupting LCD refresh or real-time sensor logging. |
| Hardware LIN Module | Integrated LIN 2.0 transceiver using UART0 and timer RA - reduces component count and PCB area for communication with HVAC or motor modules in white goods. |
| Low-Power Modes | Wait (3.5 µA), stop (2 µA), power-off (0.02 µA) at 3.0 V - extends battery life in cordless appliance remotes or backup clock functions. |
| EMI/EMS Optimization | Designed for high immunity and low emission - meets IEC 61000-4-x requirements for household appliance EMI compliance without added shielding. |
| High-Current I/O | 16 pins capable of >20 mA sink/source - directly drives LEDs, buzzers, or small relays in control panels without external drivers. |
Applications
| Appliance Front Panel Control | HVAC User Interface |
|---|---|
|
Use Scenario: Managing LCD display, keypad scan, temperature sensor inputs, and buzzer feedback in microwave ovens or washing machine control panels. IC Role / Device Role / Timing Role: Central HMI controller executing real-time UI state machine, driving 56-segment LCD, scanning 8×8 keypad matrix, and generating audible alerts via DAC or GPIO. Use Value: Single-chip integration of LCD driver, 20-channel ADC, and high-current I/O eliminates discrete display drivers and interface logic, reducing BOM cost by ~$0.35/unit. |
Use Scenario: Controlling segmented display, rotary encoder input, fan speed PWM, and thermistor-based ambient sensing in residential air conditioner remotes. IC Role / Device Role / Timing Role: System-on-chip managing human interaction (encoder, buttons), environmental sensing (10-bit ADC), and actuator control (Timer RD 6-pin PWM for brushless fan). Use Value: Hardware LIN interface enables direct communication with main HVAC controller over single-wire bus, avoiding UART-to-LIN level-shifter components. |
| Smart Kitchen Timer Display | Industrial Panel Meter |
|
Use Scenario: Driving 4-digit 7-segment LCD with colon separator, detecting push-button presses, logging elapsed time, and sounding alarm via integrated DAC. IC Role / Device Role / Timing Role: Real-time clock (timer RE) maintains accurate seconds/minutes/hours; LCD controller handles static/dynamic duty modes; DAC generates tone without external oscillator. Use Value: On-chip voltage multiplier powers VL1–VL4 pins, allowing full 1/4-bias LCD operation from single 3.3 V rail - eliminates external DC-DC converter. |
Use Scenario: Reading analog process signals (4–20 mA via shunt), displaying values on 8-digit segmented LCD, and transmitting data via UART to PLC over RS-485. IC Role / Device Role / Timing Role: Analog front-end (20-channel ADC with sample-and-hold), display controller (56 SEG), and serial interface (UART2 in I²C mode for sensor config). Use Value: 88 I/O pins support expansion headers for optional relay control or additional sensors, while 100-pin QFP ensures mechanical stability in vibration-prone industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L3ACCNFP | Same die, 100-pin LQFP (PLQP0100KB-A) with 0.50 mm pitch - smaller footprint but tighter assembly tolerance. | Preferred for high-volume SMT lines with fine-pitch capability; less suitable for manual rework or prototyping. | Select R5F2L3ACCNFP when board space is constrained and automated assembly is guaranteed. |
| R5F2L38CCNFA | Lower I/O count (68 pins), 16-channel ADC, 48-segment LCD - same R8C/Lx architecture but reduced peripheral set. | Suitable for simpler displays (e.g., 2-line character LCD) and fewer analog inputs; lacks Timer RG and some high-current ports. | Choose R5F2L38CCNFA for cost-sensitive designs where 56-segment LCD or 20-channel ADC is unnecessary. |
Compared with R5F2L3ACCNFA#U1, R5F2L3ACCNFP offers identical functionality in a denser LQFP package ideal for miniaturized appliances, while R5F2L38CCNFA trades I/O and LCD capacity for lower unit cost in mid-tier kitchen devices - both require layout changes and firmware validation due to pinout differences.
Availability
R5F2L3ACCNFA#U1 is available at Aetrix Electronics and suitable for appliance front panels, HVAC user interfaces, smart kitchen timers, and industrial panel meters requiring stable component supply across multi-year production cycles.
Supply support for R5F2L3ACCNFA#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, and power solutions for automotive, industrial, and IoT markets.
The R8C/L3AC Group is part of Renesas' legacy 16-bit MCU portfolio designed specifically for cost-sensitive, display-intensive consumer and industrial HMI applications with integrated LCD drivers and robust EMI performance.
FAQ
What is the operating temperature range for R5F2L3ACCNFA#U1?
The R5F2L3ACCNFA#U1 is an N-version device rated for -20°C to +85°C ambient operating temperature. This specification is confirmed in Table 1.6 of the R01DS0095EJ0101 datasheet and applies to all variants using the "N" suffix in the part number. The R5F2L3ACCNFA#U1 uses the PRQP0100JD-B QFP package, which is qualified across this full range.
Does R5F2L3ACCNFA#U1 support background operation (BGO) for data flash?
Yes, the R5F2L3ACCNFA#U1 supports background operation (BGO) for its 1 KB × 4 data flash blocks, as explicitly stated in Table 1.6 under Flash Memory features. This allows the R5F2L3ACCNFA#U1 to execute application code from program flash while simultaneously erasing or programming data flash - critical for over-the-air updates in connected appliances.
How many analog input channels does R5F2L3ACCNFA#U1 provide?
The R5F2L3ACCNFA#U1 provides 20 analog input channels, as specified in Table 1.5 under A/D Converter for the R8C/L3AC Group. These are mapped to pins P0_0–P0_7, P1_0–P1_7, P2_0, and P13_0–P13_3, supporting 10-bit resolution with sample-and-hold and sweep mode - enabling simultaneous sampling of multiple thermistors or potentiometers in appliance control systems.
What LCD configuration is supported by R5F2L3ACCNFA#U1?
The R5F2L3ACCNFA#U1 supports up to 8 common outputs and 56 segment outputs, with selectable bias (1/2, 1/3, 1/4) and duty (static, 1/2–1/8). Its integrated voltage multiplier and dedicated regulator (VL1–VL4, CL1/CL2 pins) eliminate external bias circuitry - verified in Table 1.5 and Figure 1.8 block diagram for the R8C/L3AC Group.
Is hardware LIN communication supported on R5F2L3ACCNFA#U1?
Yes, the R5F2L3ACCNFA#U1 includes a dedicated hardware LIN module compliant with LIN 2.0, implemented using UART0 and timer RA as stated in Table 1.5. This enables single-wire master/slave communication without software bit-banging, reducing CPU load and improving timing accuracy in appliance subsystem networks.
R5F2L3ACCNFA#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-BQFP
- Series:
- R8C/Lx/3AC
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- 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 20x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L3ACCNFA#U1 FAQ
1.How can I place an order for R5F2L3ACCNFA#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L3ACCNFA#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 R5F2L3ACCNFA#U1 reliable?
The price and inventory of R5F2L3ACCNFA#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L3ACCNFA#U1 is usually 5 days.
3.What payment methods are accepted for R5F2L3ACCNFA#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L3ACCNFA#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L3ACCNFA#U1?
R5F2L3ACCNFA#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L3ACCNFA#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 R5F2L3ACCNFA#U1?
For technical support, including R5F2L3ACCNFA#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L3ACCNFA#U1 requirements.
6.How does Aetrix verify that R5F2L3ACCNFA#U1 is sourced from the original manufacturer or authorized distributors?
All R5F2L3ACCNFA#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 R5F2L3ACCNFA#U1 meets industry standards.
7.What is the process for return or replacement of R5F2L3ACCNFA#U1?
All R5F2L3ACCNFA#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L3ACCNFA#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 R5F2L3ACCNFA#U1 part is unused and in its original packaging.
Return procedure for R5F2L3ACCNFA#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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