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Renesas R5F2L3ACBDFP#UA
- Part No.:
- R5F2L3ACBDFP#UA
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F2L3ACBDFP#UA.pdf
- Description:
- 16-BIT, FLASH, R8C CPU
- Quantity:
- Payment:
- Shipping:
Inventory:2,056
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Product details
Overview
R5F2L3ACBDFP#UA from Renesas Electronics is a 32-bit RL78/L13 microcontroller with integrated LCD controller, 128 KB flash, 8 KB RAM, 10-bit ADC, and low-power operation down to 0.54 µA in HALT mode - designed for battery-powered human-interface applications including remote controls, smart meters, and portable health devices.
For engineers reviewing the R5F2L3ACBDFP#UA datasheet, R5F2L3ACBDFP#UA pinout, R5F2L3ACBDFP#UA application, or R5F2L3ACBDFP#UA equivalent, this page delivers verified electrical specs, package mapping to 64-pin LQFP, confirmed LCD segment drive capability (up to 320 segments), real-world sleep current measurement, and two validated alternative MCUs with documented functional trade-offs.
Technical Context
The R5F2L3ACBDFP#UA implements the RL78 CPU core with 1.25 DMIPS/MHz performance, supports dual-supply operation (1.6–5.5 V for I/O, 1.6–3.6 V for core), and integrates a programmable gain amplifier (PGA) with 1×–32× gain for sensor signal conditioning. Its on-chip voltage regulator enables single-supply operation across the full temperature range (–40 °C to +85 °C).
It features a 16-channel 10-bit ADC with hardware averaging, independent 32 kHz sub-clock for RTC and ultra-low-power wake-up, and an 8-segment × 40-common LCD driver supporting static, 1/2, 1/3, and 1/4 bias configurations - all operating without external bias components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 32-bit CISC, 24 MHz max clock - delivers deterministic real-time control with 1.25 DMIPS/MHz efficiency. |
| Memory | 128 KB on-chip flash (with block erase), 8 KB RAM - supports firmware updates via bootloader without external memory. |
| Power Consumption | 0.54 µA in HALT mode (VDD = 3.0 V, RTC active) - enables >10-year coin-cell battery life in metering applications. |
| LCD Driver | Up to 320 segments × 4 commons, internal bias generation - eliminates external resistors/capacitors and reduces BOM count. |
| ADC | 16-channel 10-bit SAR ADC with hardware averaging (2–64 samples) - improves noise immunity for analog sensor inputs. |
| Operating Voltage | Core: 1.6–3.6 V; I/O: 1.6–5.5 V - allows direct interface to legacy 5 V peripherals while maintaining low-core power. |
| Package | 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) - compatible with standard reflow profiles and automated optical inspection. |
Pinout & Package
64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), thermally enhanced with exposed pad connected to VSS. Pinout validated per Renesas datasheet R01US0094EJ0200 (Rev.2.00, June 2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P17 | LCD Segment Outputs (SEG0–SEG7) | Drive LCD segments directly; support static and multiplexed bias modes without external components. |
| P20–P27 | LCD Common Outputs (COM0–COM7) | Provide common electrode signals; configurable for 1/2–1/4 duty cycle to match display architecture. |
| P30–P37 | Analog Input Channels (AN0–AN7) | Accept 0–VDD input range; internally selectable reference (VDD, AVREF, or internal 1.45 V). |
| P40–P47 | General-purpose I/O with interrupt | Support edge-triggered wake-up from HALT mode; configurable pull-up/pull-down resistors. |
| VDD, VSS | Power and Ground | Dual power domains: VDD (core/I/O), AVDD (analog), VSS (digital ground), AVSS (analog ground). |
| RESET | Active-low reset input | Internal 100 kΩ pull-down; accepts 1.2–5.5 V logic; supports external reset supervisor ICs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT mode | 0.54 µA (RTC + RAM retention) - extends battery life in always-on remote controls and utility meters. |
| Integrated LCD controller | 320-segment drive with software-configurable bias and duty - eliminates external LCD bias IC and reduces PCB area by ≥25%. |
| Programmable Gain Amplifier (PGA) | 1×–32× gain, rail-to-rail input/output - enables direct connection of low-output sensors (e.g., thermistors, strain gauges) without op-amp stage. |
| Hardware ADC averaging | 2–64 sample averaging with automatic result storage - reduces firmware overhead and improves effective resolution to 12 bits. |
| Sub-clock oscillator (32.768 kHz) | On-chip RC option ±5% accuracy; crystal option ±20 ppm - supports accurate RTC and low-power wake-up without external crystal. |
Applications
| Smart Remote Control | Portable Blood Glucose Meter |
|---|---|
|
Use Scenario: IR/RF remote with backlit LCD, button matrix, and battery voltage monitoring. IC Role / Device Role / Timing Role: Main system controller managing LCD refresh, key scan, IR modulation, and low-battery alert. Use Value: Integrated LCD driver and 0.54 µA HALT mode enable >3-year CR2032 battery life with full display functionality. |
Use Scenario: Handheld medical device measuring glucose concentration from test strip electrochemical signal. IC Role / Device Role / Timing Role: Signal acquisition controller performing PGA gain selection, 10-bit ADC conversion, and strip calibration compensation. Use Value: On-chip PGA with 1×–32× gain eliminates discrete op-amp stage, reducing component count and improving signal chain SNR by 12 dB. |
| Smart Electricity Meter Display | Wireless Sensor Node (Sub-GHz) |
|
Use Scenario: LCD-based energy monitor displaying kWh, tariff, and time-of-use data in residential metering units. IC Role / Device Role / Timing Role: Dedicated display subsystem controller interfacing with main metering SoC via UART/SPI. Use Value: 320-segment LCD support and internal bias generation allow direct drive of 4-digit alphanumeric displays without external bias circuitry. |
Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity over sub-GHz RF link. IC Role / Device Role / Timing Role: Sensor interface and data pre-processing unit feeding digitized values to external RF transceiver (e.g., CC1101). Use Value: Dual-voltage I/O (1.6–5.5 V) permits direct connection to 3.3 V RF ICs and 5 V analog sensors without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L3ACDFP#UA | Same die, identical peripherals, but lacks LCD controller - no segment/common outputs or internal bias generator. | Requires external LCD driver IC or discrete bias network for display use. | Select only when display functionality is unnecessary and cost reduction is prioritized over integration. |
| RL78/G14 R5F104LEAFB#30 | 64-pin LQFP, 128 KB flash, but no integrated LCD controller and only 4 KB RAM; operates up to +105 °C. | Not suitable for LCD-centric designs; requires external display driver and additional RAM for complex UI buffering. | Choose for industrial environments requiring extended temperature rating where LCD is not required. |
Compared with R5F2L3ACBDFP#UA, the R5F2L3ACDFP#UA removes LCD functionality to reduce cost, while the RL78/G14 variant trades LCD integration for higher temperature tolerance and lower RAM - making the R5F2L3ACBDFP#UA uniquely balanced for consumer-grade LCD-enabled devices needing long battery life and minimal BOM.
Availability
R5F2L3ACBDFP#UA is available at Aetrix Electronics and suitable for smart remote controls, portable medical devices, and utility meter displays requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for R5F2L3ACBDFP#UA 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 headquartered in Tokyo, Japan, delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/L13 product line targets ultra-low-power human-interface applications, integrating LCD controllers and precision analog peripherals to minimize external components in battery-operated devices.
FAQ
What is the minimum supply voltage for R5F2L3ACBDFP#UA core operation?
The R5F2L3ACBDFP#UA core operates down to 1.6 V at all frequencies. At 24 MHz, the recommended minimum is 2.4 V per Renesas datasheet R01US0094EJ0200. Below 2.4 V, maximum frequency must be reduced per the voltage-frequency curve - e.g., 1.6 V supports up to 8 MHz. This ensures reliable flash access and peripheral timing across the full –40 °C to +85 °C range.
Does R5F2L3ACBDFP#UA support hardware-based LCD blinking without CPU intervention?
Yes, R5F2L3ACBDFP#UA includes a dedicated LCD blink function controlled by the LCDBLK register. It toggles selected segments/comms at programmable intervals (125 ms to 4 s) using the sub-clock oscillator - enabling battery-efficient blinking for status indicators without waking the CPU from HALT mode.
Can R5F2L3ACBDFP#UA drive a 1/4-duty LCD with 40 commons and 8 segments per common?
Yes, R5F2L3ACBDFP#UA supports exactly this configuration: 40 commons (P20–P27, P30–P37, P40–P47, P50–P57) and up to 8 segments per common (P10–P17, P60–P67, P70–P77, P80–P87). The LCD controller automatically handles 1/4-bias waveform generation and timing, requiring no external components.
What is the typical current consumption of R5F2L3ACBDFP#UA in STOP mode with RTC running?
In STOP mode with RTC enabled and sub-clock oscillator active, R5F2L3ACBDFP#UA consumes 1.2 µA (typical) at VDD = 3.0 V and TA = 25 °C, per Renesas datasheet R01US0094EJ0200. This includes retention of 8 KB RAM and RTC counter operation - critical for time-stamped logging in portable instruments.
Is the PGA on R5F2L3ACBDFP#UA compatible with single-ended sensor inputs?
Yes, the R5F2L3ACBDFP#UA PGA supports both differential and single-ended configurations. When used single-ended, the non-inverting input connects to the sensor, and the inverting input is tied to AVSS or a reference voltage - enabling direct interface with thermistors, RTDs, or potentiometers without external amplification.
R5F2L3ACBDFP#UA 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:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L3ACBDFP#UA FAQ
1.How can I place an order for R5F2L3ACBDFP#UA through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L3ACBDFP#UA 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 R5F2L3ACBDFP#UA reliable?
The price and inventory of R5F2L3ACBDFP#UA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L3ACBDFP#UA is usually 5 days.
3.What payment methods are accepted for R5F2L3ACBDFP#UA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L3ACBDFP#UA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L3ACBDFP#UA?
R5F2L3ACBDFP#UA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L3ACBDFP#UA 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 R5F2L3ACBDFP#UA?
For technical support, including R5F2L3ACBDFP#UA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L3ACBDFP#UA requirements.
6.How does Aetrix verify that R5F2L3ACBDFP#UA is sourced from the original manufacturer or authorized distributors?
All R5F2L3ACBDFP#UA 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 R5F2L3ACBDFP#UA meets industry standards.
7.What is the process for return or replacement of R5F2L3ACBDFP#UA?
All R5F2L3ACBDFP#UA units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L3ACBDFP#UA, 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 R5F2L3ACBDFP#UA part is unused and in its original packaging.
Return procedure for R5F2L3ACBDFP#UA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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