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Renesas R5F111NEALA#U0
- Part No.:
- R5F111NEALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 85-VFLGA
- Datasheet:
-
R5F111NEALA#U0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 85VFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:416
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Product details
Overview
R5F111NEALA#U0 from Renesas is an 85-pin VFLGA-packaged RL78/L1C 16-bit microcontroller without USB, featuring 64 KB flash, 8 KB data flash, 8 KB RAM, integrated LCD controller/driver (44 segment × 4 common), and 12-bit A/D converter (VDD = 2.4–3.6 V) for low-power LCD-based metering and control applications.
For engineers reviewing the R5F111NEALA#U0 datasheet, R5F111NEALA#U0 pinout, R5F111NEALA#U0 application, or R5F111NEALA#U0 equivalent, key selection criteria include its 85-pin VFLGA footprint, absence of USB PHY, 64 KB code flash capacity, -40 to +85°C consumer-grade temperature range, and support for LCD bias generation via internal charge pump.
Technical Context
The R5F111NEALA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction timing (0.04167 μs min @ 24 MHz or 30.5 μs @ 32.768 kHz). It integrates a 12-bit interval timer, RTC2 with calendar and alarm, and event link controller (ELC) enabling peripheral-triggered operation without CPU intervention.
Its power management includes HALT, STOP, and SNOOZE modes, achieving 112.5 μA/MHz active current and 0.68 μA in RTC2+LVD standby. The LCD controller supports internal voltage boosting, capacitor split, and external resistor division methods, with configurable segment/common drive capability up to 44×4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/divide instructions |
| Flash / Data Flash / RAM | 64 KB / 8 KB / 8 KB - enables firmware updates via self-programming with boot swap and flash shield window |
| Operating Voltage | 1.6–3.6 V - supports single-supply battery-powered designs including coin-cell operation |
| LCD Controller | 44 segment × 4 common outputs with internal boost, capacitor split, or resistor division - eliminates external LCD bias IC |
| A/D Converter | 12-bit resolution (VDD ≥ 2.4 V), 9-channel input, internal 1.45 V reference - suitable for precision sensor interfacing |
| Temperature Range | -40 to +85°C (Consumer grade A) - qualified for indoor consumer electronics and portable instrumentation |
| Package | 85-pin VFLGA (7 × 7 mm, 0.65 mm pitch) - compact footprint for space-constrained LCD modules |
Pinout & Package
85-pin plastic VFLGA package (7 × 7 mm, 0.65 mm pitch), tray packaging (#U0), optimized for high-density LCD module integration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM3 | LCD common output | Drives up to 4 LCD backplane lines; supports multiplexed display driving |
| SEG0–SEG55 | LCD segment output | Configurable as 44 active segments (e.g., SEG0–SEG6, SEG12–SEG25, SEG27–SEG42, SEG48–SEG55) |
| P00–P07 | Port 0 general-purpose I/O | Supports TTL input, N-ch open-drain (6 V tolerant), pull-up resistors, and key interrupt |
| P30–P35 | Port 3 with timer/UART/CSI/I²C functions | Enables UART3, CSI30, I²C30, and REMOOUT on shared pins - flexible peripheral routing |
| VDD0 / VSS0 | Digital power supply / ground | Separate digital rail; REGC capacitor required between REGC and VSS0 for internal regulator stability |
| AVDD / AVSS | Analog power supply / ground | Isolated analog domain for ADC, DAC, comparator - improves noise immunity |
| ANI0–ANI6, ANI16–ANI21 | Analog inputs | 13 total channels; ANI0/ANI1 double as AVREFP/AVREFM for ADC reference calibration |
| ANO0 / ANO1 | Analog outputs | 8-bit D/A converters with 0–VDD output range - usable for analog sensor simulation or bias control |
Key Features
| Feature | Design Value |
|---|---|
| True Low Power Platform | 112.5 μA/MHz active current and 0.68 μA RTC2+LVD standby - extends battery life in portable meters |
| Integrated LCD Driver | 44-segment × 4-common with internal voltage boosting - removes need for external LCD bias IC and reduces BOM count |
| Background Data Flash Rewrite | BGO mode allows CPU execution from program memory while rewriting 8 KB data flash - enables seamless firmware parameter updates |
| Event Link Controller (ELC) | Links 30+ peripheral events (e.g., timer overflow, ADC completion) directly to peripherals - eliminates CPU polling overhead |
| Hardware CRC & BCD Correction | Dedicated circuits accelerate checksum calculation and decimal arithmetic - improves real-time data integrity in metering |
Applications
| Smart Energy Meter Display | Portable Medical Device UI |
|---|---|
|
Use Scenario: Driving segmented LCD for kWh consumption, tariff, and status indicators in battery-powered smart meters. IC Role / Device Role / Timing Role: Primary MCU executing metering firmware and managing LCD refresh, RTC calendar, and low-power wake-up scheduling. Use Value: Integrated LCD driver and ultra-low standby current (0.68 μA) enable >10-year coin-cell operation without display degradation. |
Use Scenario: Controlling multi-segment LCD for blood pressure, pulse oximetry, or glucose readings in handheld clinical devices. IC Role / Device Role / Timing Role: System controller handling sensor interface (12-bit ADC), user input (key return KR0–KR7), buzzer output (PCLBUZ0/1), and display update. Use Value: On-chip 12-bit ADC with internal reference (1.45 V TYP.) ensures stable measurement accuracy across temperature and supply variation. |
| Home Appliance Control Panel | Industrial Panel Meter Interface |
|
Use Scenario: Managing LCD display, touch keys, and appliance logic (e.g., oven timer, washing cycle) in white goods. IC Role / Device Role / Timing Role: Main control MCU coordinating LCD refresh, key scan (KR0–KR7), buzzer feedback, and serial communication (UART/I²C). Use Value: 85-pin VFLGA package provides sufficient I/O for parallel key matrix and segment drivers while maintaining compact PCB area. |
Use Scenario: Serving as display engine in DIN-rail mounted panel meters requiring long-term reliability and EMC robustness. IC Role / Device Role / Timing Role: Dedicated display controller interfacing to LCD glass, reading analog sensors (via 12-bit ADC), and communicating via UART to host MCU. Use Value: Hardware RTC2 with calendar and alarm supports timestamped logging; LVD interrupt (12-level selection) enables precise brown-out response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F111NFALA#U0 | 96 KB flash, 12 KB RAM, same 85-pin VFLGA package and no USB | Higher firmware complexity support (e.g., enhanced UI logic, larger protocol stacks) | Select when additional code space and RAM are required beyond R5F111NEALA#U0's 64 KB/8 KB limits |
| R5F110NEALA#U0 | Identical 85-pin VFLGA package and memory (64 KB/8 KB/8 KB), but includes USB 2.0 function controller | Requires USB connectivity (e.g., PC configuration, firmware updates over USB) | Choose only if USB device functionality is mandatory; otherwise R5F111NEALA#U0 offers lower system cost and reduced layout complexity |
Compared with R5F111NFALA#U0, R5F111NEALA#U0 trades flash/RAM headroom for lower unit cost and smaller memory footprint; versus R5F110NEALA#U0, it removes USB PHY circuitry and associated layout constraints, simplifying design for pure LCD-control applications.
Availability
R5F111NEALA#U0 is available at Aetrix Electronics and suitable for smart energy meters, portable medical displays, home appliance control panels, and industrial panel meters requiring stable component supply and long-term manufacturability.
Supply support for R5F111NEALA#U0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/L1C product line targets ultra-low-power LCD-based applications, integrating specialized peripherals like LCD controllers, RTC2, and low-voltage ADCs to minimize external components in metering and display systems.
FAQ
What is the maximum LCD segment count supported by R5F111NEALA#U0?
R5F111NEALA#U0 supports up to 44 segment outputs and 4 common outputs, configured across dedicated pins (e.g., SEG0–SEG6, SEG12–SEG25, SEG27–SEG42, SEG48–SEG55 and COM0–COM3). This enables driving standard 4-mux character or graphic LCDs without external segment drivers.
Does R5F111NEALA#U0 include USB functionality?
No, R5F111NEALA#U0 is part of the "products without USB" family per Renesas documentation. Its pinout omits UDM, UDP, UREGC, and UVBUS signals, and the block diagram excludes the USB voltage regulator and controller blocks present in RL78/L1C USB variants like R5F110NEALA#U0.
What are the key power-saving modes available on R5F111NEALA#U0?
R5F111NEALA#U0 supports HALT, STOP, and SNOOZE modes. In STOP mode with RTC2 and LVD active, it draws just 0.68 μA; active-mode current is 112.5 μA/MHz. These modes are controlled via software registers and support fast wake-up from multiple sources including key interrupts and timer events.
Can R5F111NEALA#U0 perform background data flash writes during program execution?
Yes, R5F111NEALA#U0 supports Background Operation (BGO) for data flash. While executing code from program memory, it can rewrite the 8 KB data flash - essential for logging sensor data or updating calibration parameters without halting application logic.
What analog reference options are available for the 12-bit A/D converter in R5F111NEALA#U0?
The 12-bit A/D converter in R5F111NEALA#U0 uses an internal reference voltage of 1.45 V (TYP.) when VDD is 2.4–3.6 V. ANI0 and ANI1 serve as AVREFP and AVREFM pins, allowing external reference connection if higher precision or ratiometric measurement is required.
R5F111NEALA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 85-VFLGA
- Series:
- RL78/L1C
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 55
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 3.6V
- Data Converters:
- A/D 11x8/12b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F111NEALA#U0 FAQ
1.How can I place an order for R5F111NEALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F111NEALA#U0 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 R5F111NEALA#U0 reliable?
The price and inventory of R5F111NEALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F111NEALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F111NEALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F111NEALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F111NEALA#U0?
R5F111NEALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F111NEALA#U0 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 R5F111NEALA#U0?
For technical support, including R5F111NEALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F111NEALA#U0 requirements.
6.How does Aetrix verify that R5F111NEALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F111NEALA#U0 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 R5F111NEALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F111NEALA#U0?
All R5F111NEALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F111NEALA#U0, 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 R5F111NEALA#U0 part is unused and in its original packaging.
Return procedure for R5F111NEALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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