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Renesas R5F111NFALA#U0
- Part No.:
- R5F111NFALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 85-VFLGA
- Datasheet:
-
R5F111NFALA#U0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 85VFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,559
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Product details
Overview
R5F111NFALA#U0 from Renesas is an RL78/L1C 85-pin VFLGA microcontroller without USB, featuring 64 KB flash, 8 KB data flash, 8 KB RAM, integrated LCD controller/driver (44 segment × 4 common), 12-bit A/D converter (13-channel, 2.4–3.6 V), and ultra-low power operation down to 0.68 μA in RTC2+LVD mode - designed for battery-powered LCD display systems in consumer electronics.
For engineers reviewing the R5F111NFALA#U0 datasheet, R5F111NFALA#U0 pinout, R5F111NFALA#U0 application, or R5F111NFALA#U0 equivalent, key selection criteria include LCD segment drive capability (44 seg × 4 com), absence of USB interface, VFLGA-85 package constraints, and compatibility with 1.6–3.6 V supply and -40°C to +85°C ambient operation.
Technical Context
The R5F111NFALA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs at 24 MHz or 30.5 μs at 32.768 kHz). It integrates a dedicated LCD controller supporting internal voltage boosting, capacitor split, and external resistor division methods.
Peripheral subsystems include 11× 16-bit timers, real-time clock 2 (99-year calendar), 2× comparators, 5× I²C/Simplified I²C channels, 4× UART/LIN, 4× CSI/SPI, and a Data Transfer Controller (DTC) with chain transfer support - all operating under true low-power platform architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 CPU, CISC, 3-stage pipeline, 33 DMIPS @ 24 MHz |
| Memory | 64 KB code flash (1 KB block), 8 KB data flash (1M rewrite cycles), 8 KB RAM |
| LCD Driver | 44 segment × 4 common outputs; supports internal boost, capacitor split, and external resistor division |
| A/D Converter | 12-bit resolution (VDD = 2.4–3.6 V), 13 analog inputs, internal 1.45 V reference and temperature sensor |
| Power Consumption | 112.5 μA/MHz active; 0.68 μA in RTC2 + LVD STOP mode |
| Supply & Temp | 1.6–3.6 V operation; -40°C to +85°C ambient (Consumer grade A) |
| Package | 85-pin VFLGA (7 mm × 7 mm, 0.65 mm pitch), tray packaging (#U0) |
Pinout & Package
85-pin plastic VFLGA package (7 × 7 mm, 0.65 mm pitch), optimized for compact LCD-based consumer devices requiring minimal PCB footprint and high I/O density per unit area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM3 | LCD common output | Drive up to 4 LCD backplane signals; supports multiplexed static/dynamic LCD bias |
| SEG0–SEG55 | LCD segment output | Configurable as 44 active segments (e.g., SEG0–SEG6, SEG12–SEG25, SEG27–SEG42, SEG48–SEG55) for alphanumeric displays |
| CAPH / CAPL | LCD capacitor connection | Interface external capacitors for internal charge-pump voltage boosting (VL1–VL4 generation) |
| P00–P07, P10–P12, P20–P27, etc. | General-purpose I/O ports | 59 total I/O pins; configurable as N-ch open drain (6 V tolerant), TTL input, or with on-chip pull-up |
| ANI0–ANI13 | Analog input | 13-channel A/D input; ANI0/ANI1 serve as AVREFP/AVREFM; ANI2–ANI6 and ANI16–ANI21 are dedicated analog inputs |
| ANO0 / ANO1 | Analog output | 8-bit D/A outputs; rail-to-rail (0 V to VDD), support real-time waveform generation |
| INTP0–INTP7 | External interrupt input | Edge-triggered interrupts with priority control; used for keypad scan, wake-up, or event capture |
| RESET | Active-low reset input | Asynchronous reset with on-chip POR and LVD; supports 12-level voltage detection interrupt/reset selection |
Key Features
| Feature | Design Value |
|---|---|
| True Low Power Platform | 0.68 μA RTC2+LVD STOP mode enables multi-year battery life in portable LCD meters and remotes |
| Integrated LCD Controller/Driver | Eliminates external LCD driver IC; supports 44-segment × 4-common configuration with programmable bias and voltage generation |
| Background Data Flash Rewrite | BGO allows full CPU execution from code flash while rewriting data flash - critical for firmware updates and logging |
| Event Link Controller (ELC) | Links 30+ peripheral events without CPU intervention, reducing latency and power in sensor/display synchronization |
| On-chip Debug & Security | Full on-chip debug via single-wire interface; flash security includes block erase prohibition and boot swap protection |
Applications
| Smart Home Thermostat Display | Portable Blood Glucose Meter |
|---|---|
Use Scenario: Compact, battery-operated device displaying glucose readings, date/time, and trend graphs on segmented LCD. IC Role / Device Role / Timing Role: Primary MCU managing sensor interface (A/D), LCD refresh, real-time clock, and button/keypad scan via KR0–KR7. Use Value: Integrated 12-bit A/D converter directly digitizes analog sensor output; LCD driver eliminates external components; 0.68 μA STOP mode extends CR2032 battery life beyond 2 years. | Use Scenario: Handheld medical device with 4-digit LCD, tactile buttons, and low-battery indicator. IC Role / Device Role / Timing Role: System controller executing calibration routines, driving LCD segments, monitoring LVD for battery warning, and logging results to data flash. Use Value: Background data flash rewrite (BGO) enables secure result storage during active measurement; on-chip temperature sensor aids auto-calibration. |
| Energy Monitoring Dashboard | Appliance Control Panel |
Use Scenario: Wall-mounted kWh meter with 7-segment + icon LCD showing consumption, tariff, and status. IC Role / Device Role / Timing Role: Central controller reading current/voltage sensors via A/D, updating RTC2 calendar, and refreshing LCD every 200 ms. Use Value: 11× 16-bit timers coordinate precise sensor sampling intervals and LCD blink timing; ELC synchronizes ADC trigger with LCD COM switching to reduce noise. | Use Scenario: Microwave oven or washing machine front panel with numeric display, function keys, and buzzer feedback. IC Role / Device Role / Timing Role: UI processor handling key scan (KR0–KR7), buzzer tone generation (PCLBUZ0/1), segment LCD update, and safety interlock monitoring. Use Value: Programmable clock/buzzer outputs enable variable-frequency audible alerts; on-chip BCD correction simplifies decimal display formatting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F111NGALA#U0 | 128 KB flash, 12 KB RAM, same 85-pin VFLGA package and peripheral set | Supports larger firmware (e.g., multi-language UI, enhanced crypto libraries) | Select when future firmware expansion or additional RTOS services require >64 KB code space |
| R5F110NFALA#U0 | Identical package and pinout but adds USB 2.0 function controller (full/low-speed) | Enables PC connectivity for configuration, firmware update, or HID device emulation | Choose only if USB host/device functionality is required; otherwise R5F111NFALA#U0 reduces BOM cost and layout complexity |
Compared with R5F111NGALA#U0, the R5F111NFALA#U0 trades flash/RAM headroom for lower cost and power in fixed-function LCD applications; versus R5F110NFALA#U0, it removes USB circuitry to simplify design, reduce EMI risk, and eliminate USB regulator (UREGC/UVBUS) and termination requirements.
Availability
R5F111NFALA#U0 is available at Aetrix Electronics and suitable for smart home thermostats, portable medical devices, energy monitors, and appliance control panels requiring stable component supply and long-term industrial availability.
Supply support for R5F111NFALA#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 drivers, RTC2, and low-voltage A/D converters to minimize external components in cost-sensitive consumer electronics.
FAQ
What is the maximum LCD segment count supported by the R5F111NFALA#U0?
The R5F111NFALA#U0 supports up to 44 active segment outputs (e.g., SEG0–SEG6, SEG12–SEG25, SEG27–SEG42, SEG48–SEG55) with 4 common outputs (COM0–COM3), enabling alphanumeric or custom symbol displays without external drivers. This configuration is confirmed in the RL78/L1C datasheet Section 1.1 and Block Diagram 1.5.2.
Does the R5F111NFALA#U0 include USB functionality?
No, the R5F111NFALA#U0 does not include USB functionality. The "111" in the part number denotes the USB-disabled variant of the RL78/L1C family. USB-capable equivalents use "110" (e.g., R5F110NFALA#U0) and require UREGC, UVBUS, UDP, and UDM pins - none of which are present on the R5F111NFALA#U0 pinout.
What are the key power modes and their typical current draw for the R5F111NFALA#U0?
The R5F111NFALA#U0 offers HALT (112.5 μA/MHz), STOP (0.68 μA with RTC2 + LVD enabled), and SNOOZE modes. In STOP mode, only RTC2 and LVD remain active - ideal for battery-backed real-time clocks in meters and remotes. These values are specified in the datasheet Section 1.1 under "Ultra-low power consumption technology."
Can the R5F111NFALA#U0 perform simultaneous A/D conversion and LCD refresh?
Yes, the R5F111NFALA#U0 supports concurrent A/D conversion and LCD refresh using its Event Link Controller (ELC) to trigger ADC start upon COM signal transition, minimizing CPU involvement. This hardware synchronization is documented in Section 1.1 and Block Diagram 1.5.2, ensuring accurate timing without software overhead.
What is the purpose of the CAPH and CAPL pins on the R5F111NFALA#U0?
The CAPH and CAPL pins connect external capacitors to implement the internal charge-pump circuit for LCD voltage boosting. They enable generation of VL1–VL4 bias voltages required for multiplexed LCD driving - a feature essential for achieving sufficient contrast in 4-common static/dynamic displays. This is detailed in Section 1.1 "LCD controller/driver" and Figure 1-11.
R5F111NFALA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 85-VFLGA
- Series:
- RL78/L1C
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 10K 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:
R5F111NFALA#U0 FAQ
1.How can I place an order for R5F111NFALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F111NFALA#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 R5F111NFALA#U0 reliable?
The price and inventory of R5F111NFALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F111NFALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F111NFALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F111NFALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F111NFALA#U0?
R5F111NFALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F111NFALA#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 R5F111NFALA#U0?
For technical support, including R5F111NFALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F111NFALA#U0 requirements.
6.How does Aetrix verify that R5F111NFALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F111NFALA#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 R5F111NFALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F111NFALA#U0?
All R5F111NFALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F111NFALA#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 R5F111NFALA#U0 part is unused and in its original packaging.
Return procedure for R5F111NFALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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