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Renesas R5F111MEAFB#50
- Part No.:
- R5F111MEAFB#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F111MEAFB#50.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
R5F111MEAFB#50 from Renesas is an 80-pin RL78/L1C 16-bit microcontroller without USB, featuring 64 KB flash, 8 KB RAM, integrated LCD controller/driver (44 segment/4 common), 12-bit A/D converter (12-channel, 2.4–3.6 V range), and ultra-low power operation down to 0.68 μA in RTC2+LVD mode - designed for battery-powered LCD display systems such as smart meters and portable medical devices.
For engineers reviewing the R5F111MEAFB#50 datasheet, R5F111MEAFB#50 pinout, R5F111MEAFB#50 application, or R5F111MEAFB#50 equivalent, key selection criteria include LCD segment drive capability, low-voltage analog performance (12-bit ADC at 2.4–3.6 V), real-time clock with calendar, and compatibility with industrial temperature range (−40 to +105°C) under G-grade specification.
Technical Context
The R5F111MEAFB#50 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 dedicated LCD controller supporting internal voltage boosting and capacitor-split methods, with configurable segment/common outputs and built-in LCD RAM space.
Its analog subsystem includes a 12-bit A/D converter with internal reference (1.45 V TYP), temperature sensor, and dual 8-bit D/A channels; digital peripherals comprise 11× 16-bit timers, 4× UART/LIN, 5× I²C, 4× CSI, real-time clock 2 (99-year calendar), and event link controller for deterministic peripheral triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/accumulate instructions |
| Flash / RAM | 64 KB code flash + 8 KB on-chip RAM - sufficient for standalone LCD UI firmware with BCD arithmetic and RTC logging |
| LCD Controller | Supports 44 segment × 4 common (or 40×8) drive with internal boost, capacitor-split, or external resistor division |
| A/D Converter | 12-bit resolution, 12 analog inputs, operates only at VDD ≥ 2.4 V - enables precision sensor interfacing in metering |
| Power Modes | HALT (112.5 μA/MHz), STOP (0.68 μA RTC2+LVD), SNOOZE - optimized for intermittent display updates |
| Operating Temp | −40 to +105°C (G-grade) - qualified for industrial environments including HVAC and energy monitoring |
| Package | 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) - compatible with standard reflow assembly and high-density PCB layouts |
Pinout & Package
80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, with exposed pad not present. Pin functions include dedicated LCD segment/common drivers (SEG0–SEG55, COM0–COM7), analog I/O (ANI0–ANI21, ANO0–ANO1), and dual crystal oscillator inputs (X1/X2, XT1/XT2) for main/subsystem clocks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM7 | LCD common output | Drives up to 8 LCD backplane signals; supports multiplexed display with software-timed scanning |
| SEG0–SEG55 | LCD segment output | Provides 56 segment outputs; R5F111MEAFB#50 uses subset (44 seg × 4 com or 40 seg × 8 com) per configuration |
| ANI0/AVREFP | Analog input / positive reference | Accepts external sensor signal or sets ADC reference; shared pin requires functional mode selection |
| ANI1/AVREFM | Analog input / negative reference | Enables ratiometric measurement or differential ADC mode when paired with AVREFP |
| REGC | Voltage regulator decoupling | Requires 0.47–1 μF capacitor to VSS - critical for stable internal LDO operation and LCD bias stability |
| P00–P07 | Port 0 general-purpose I/O | Configurable as TTL input, N-ch open-drain (6 V tolerant), or with pull-up; supports key interrupt and buzzer output |
Key Features
| Feature | Design Value |
|---|---|
| True Low Power Platform | 0.68 μA RTC2+LVD current enables >10-year coin-cell operation in standby with periodic wake-up |
| Integrated LCD Driver | Eliminates external LCD bias IC and reduces BOM count by integrating charge pump, COM/SEG drivers, and display RAM |
| 12-bit A/D Converter | Delivers 12-bit linearity at 2.4–3.6 V supply - suitable for precision thermistor or shunt-based current sensing |
| Real-Time Clock 2 | Full calendar (year/month/day/hour/min/sec), alarm, and auto-correction - enables timestamped data logging without host MCU |
| Background Data Flash Rewrite | BGO allows execution from program memory while updating 8 KB data flash - essential for field firmware parameter storage |
Applications
| Smart Energy Meter | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter with segmented LCD showing consumption, tariff, and status. IC Role / Device Role / Timing Role: Primary system controller managing LCD refresh, metrology ADC sampling, RTC timestamping, and secure flash logging. Use Value: Integrated LCD driver and ultra-low STOP-mode current extend battery life beyond 10 years; 12-bit ADC ensures accurate pulse counting and voltage monitoring. | Use Scenario: Handheld blood pressure or glucose monitor with alphanumeric LCD and tactile keypad. IC Role / Device Role / Timing Role: Central MCU handling sensor interface, LCD rendering, button scan via KR0–KR7, and buzzer feedback via PCLBUZ0/1. Use Value: On-chip key return (KR0–KR7) and programmable buzzer outputs reduce external components; −40 to +105°C rating supports clinical and home-use environments. |
| Industrial Control Panel | Home Appliance Display |
Use Scenario: DIN-rail mounted HVAC or PLC HMI with 4-line segmented display and rotary encoder input. IC Role / Device Role / Timing Role: Dedicated display controller offloading GUI tasks from main processor; handles LCD update, RTC sync, and local alarm generation. Use Value: Event Link Controller (ELC) routes timer or interrupt events directly to peripherals - enabling deterministic response to encoder rotation or fault signals. | Use Scenario: Microwave oven or washing machine control panel with segmented LCD, touch keys, and audible alerts. IC Role / Device Role / Timing Role: System-on-chip managing user input (key return), display output (SEG/COM), buzzer tone generation, and appliance state logic. Use Value: Dual 8-bit D/A channels generate precise audio tones; integrated BCD correction circuit simplifies decimal display formatting without software overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F111MGAFB#50 | 128 KB flash, 10 KB RAM, same package and peripheral set - no USB, identical LCD/ADC specs | Supports larger firmware (e.g., multi-language UI, enhanced crypto stack) without changing PCB layout | Select when future firmware expansion or OTA update capability is required |
| R5F111NEALA#U0 | 85-pin VFLGA (7 × 7 mm), same 64 KB flash/RAM, adds two extra analog inputs (ANI5/ANI6) and port P8 | Enables higher I/O density and smaller footprint; lacks LFQFP mechanical robustness for vibration-prone environments | Choose for space-constrained designs where board area is critical and rework tolerance is acceptable |
Compared with R5F111MEAFB#50, R5F111MGAFB#50 provides headroom for feature-rich firmware while maintaining pin compatibility, whereas R5F111NEALA#U0 trades package ruggedness for compactness and added analog I/O - both require no schematic change but differ in layout and thermal management.
Availability
R5F111MEAFB#50 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, industrial HMIs, and home appliance displays requiring stable component supply across extended product lifecycles.
Supply support for R5F111MEAFB#50 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, and power solutions for industrial, automotive, and IoT markets.
The RL78/L1C product line targets ultra-low-power LCD-based applications, emphasizing integrated display control, precision analog, and long-life battery operation - specifically engineered for cost-sensitive, high-volume consumer and industrial displays.
FAQ
What is the maximum LCD segment count supported by the R5F111MEAFB#50?
The R5F111MEAFB#50 supports up to 44 segment outputs with 4 common lines, or 40 segments with 8 commons, depending on configuration. Its LCD controller allocates RAM space for up to 44 segments (SEG0–SEG6, SEG12–SEG25, SEG27–SEG42, SEG48–SEG55) and 8 commons (COM0–COM7), though physical drive capability is limited by the 80-pin package's I/O mapping and internal routing - confirmed in Section 1.3.2 of the R01DS0192EJ0240 datasheet.
Does the R5F111MEAFB#50 include a USB interface?
No, the R5F111MEAFB#50 does not include a USB interface. The "111" in the part number explicitly denotes the USB-disabled variant of the RL78/L1C family, as defined in Section 1.2 Ordering Information of the R01DS0192EJ0240 datasheet. USB functionality is only available in "110"-prefixed parts (e.g., R5F110MEAFB#50), which have different pin assignments including UREGC, UBUS, UDP, and UDM.
What are the valid operating voltage and temperature ranges for the R5F111MEAFB#50?
The R5F111MEAFB#50 operates from 1.6 V to 3.6 V supply voltage and is rated for −40 to +105°C ambient temperature (G-grade), as specified in Section 1.1 Features and Section 1.2 Ordering Information of the R01DS0192EJ0240 datasheet. This industrial temperature range applies to all "GFB" suffix variants, including R5F111MEAFB#50, and is validated across the full voltage range.
Can the R5F111MEAFB#50 perform 12-bit A/D conversion at 1.8 V supply?
No, the R5F111MEAFB#50 requires VDD ≥ 2.4 V to operate its 12-bit A/D converter, as stated in Section 1.1 Features: "12-bit resolution A/D converter (VDD = 2.4 to 3.6 V)". At 1.6–2.3 V, only 8/10-bit A/D operation is supported. This voltage dependency is hardware-enforced and cannot be overridden in firmware - using 12-bit mode below 2.4 V results in undefined conversion accuracy.
How many analog input channels are accessible on the R5F111MEAFB#50 in 80-pin LFQFP package?
The R5F111MEAFB#50 provides 12 dedicated analog input channels: ANI0–ANI2, ANI16–ANI21 (10 total), plus AVREFP and AVREFM - all accessible on the 80-pin LFQFP package per pin configuration diagrams in Sections 1.3.2 and 1.4 of the R01DS0192EJ0240 datasheet. ANI5 and ANI6 are only available on 85- and 100-pin variants (e.g., R5F111NEALA or R5F111PEAFB).
R5F111MEAFB#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/L1C
- Packaging:
- Tape & Reel (TR)
- 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:
R5F111MEAFB#50 FAQ
1.How can I place an order for R5F111MEAFB#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F111MEAFB#50 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 R5F111MEAFB#50 reliable?
The price and inventory of R5F111MEAFB#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F111MEAFB#50 is usually 5 days.
3.What payment methods are accepted for R5F111MEAFB#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F111MEAFB#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F111MEAFB#50?
R5F111MEAFB#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F111MEAFB#50 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 R5F111MEAFB#50?
For technical support, including R5F111MEAFB#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F111MEAFB#50 requirements.
6.How does Aetrix verify that R5F111MEAFB#50 is sourced from the original manufacturer or authorized distributors?
All R5F111MEAFB#50 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 R5F111MEAFB#50 meets industry standards.
7.What is the process for return or replacement of R5F111MEAFB#50?
All R5F111MEAFB#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F111MEAFB#50, 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 R5F111MEAFB#50 part is unused and in its original packaging.
Return procedure for R5F111MEAFB#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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