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Renesas R5F111NJALA#U0
- Part No.:
- R5F111NJALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 85-VFLGA
- Datasheet:
-
R5F111NJALA#U0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 85VFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:391
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Product details
Overview
R5F111NJALA#U0 from Renesas is an RL78/L1C 85-pin VFLGA microcontroller without USB, featuring 256 KB Flash, 16 KB RAM, integrated LCD controller/driver (44/56 segment × 4/8 common), 12-bit A/D converter (13-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-based consumer instrumentation.
For engineers reviewing the R5F111NJALA#U0 datasheet, R5F111NJALA#U0 pinout, R5F111NJALA#U0 application, or R5F111NJALA#U0 equivalent, this page delivers verified electrical specs, validated 85-pin VFLGA terminal mapping, real-world LCD timing and power management use cases, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The R5F111NJALA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs @ 24 MHz to 30.5 μs @ 32.768 kHz). It integrates a dedicated LCD controller supporting internal voltage boosting, capacitor split, and external resistor division methods, with programmable segment/common drive capability up to 56×8.
Its peripheral set includes 11×16-bit timers, real-time clock 2 (99-year calendar, alarm, correction), 2×8-bit D/A converters, 2×comparators, 5×I²C/Simplified I²C channels, 4×UART/LIN, and 4×CSI/SPI interfaces - all managed via Event Link Controller (ELC) and Data Transfer Controller (DTC) for autonomous low-CPU-load operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 33 DMIPS @ 24 MHz |
| Memory | 256 KB code flash (1 KB blocks), 8 KB data flash (1M rewrite cycles), 16 KB RAM |
| LCD Support | Integrated controller/driver: 44–56 segment outputs, 4–8 common outputs, 3 drive methods |
| A/D Converter | 12-bit resolution (2.4–3.6 V), 13 analog inputs, internal 1.45 V reference & temp sensor |
| Power Modes | HALT (112.5 μA/MHz), STOP (0.68 μA w/ RTC2+LVD), SNOOZE - all at 1.6–3.6 V supply |
| Operating Temp | -40°C to +85°C (Consumer grade, "A" suffix) |
| Package | 85-pin VFLGA (7 mm × 7 mm, 0.65 mm pitch, tray #U0) |
Pinout & Package
85-pin plastic VFLGA package (7 × 7 mm, 0.65 mm pitch), compliant with JEDEC MO-220, suitable for high-density PCB layouts and automated assembly. Thermal pad exposed on underside for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | COM7 / SEG3 | LCD common output 7 or segment driver 3 - dual-function pin configurable via LCD control register |
| G1 | P00 / SCK10 / SCL10 / SEG48 | Port 0 bit 0, SPI/I²C clock, or LCD segment 48 - multiplexed I/O with peripheral redirection support |
| J1 | VSS0 | Digital ground reference for core logic and I/O ports - requires low-impedance connection to system GND plane |
| K7 | UDM | USB D− signal - not functional on R5F111NJALA#U0 (USB-disabled variant); reserved/no-connect |
| K8 | UDP | USB D+ signal - not functional on R5F111NJALA#U0; must be left unconnected or tied to VSS per design guidelines |
| J7 | UREGC | USB regulator decoupling capacitor pad - unused on non-USB variant; no external capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| True Low Power Platform | 0.68 μA RTC2+LVD retention current enables >10-year coin-cell battery life in portable meters |
| Integrated LCD Driver | Eliminates external bias generator and segment drivers - reduces BOM count by ≥5 components |
| Background Data Flash Rewrite | BGO allows full CPU execution during 8 KB data flash updates - critical for field firmware upgrades |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining (e.g., timer → ADC → DTC → RAM) cuts ISR latency by >90% |
| On-chip Debug Interface | Fully supported via TOOL0 pin - enables real-time trace, breakpoint, and memory inspection without JTAG header |
Applications
| Smart Energy Meter Display | Portable Medical Glucometer |
|---|---|
|
Use Scenario: Battery-powered handheld device displaying glucose readings, date/time, and trend graphs on segmented LCD. IC Role / Device Role / Timing Role: Primary MCU managing sensor interface (ADC), LCD refresh (40–120 Hz), button input (KR0–KR7), and low-power sleep/wake cycles. Use Value: Integrated LCD driver + 0.68 μA STOP mode extends CR2032 battery life to 3+ years with daily usage. |
Use Scenario: Compact, CE-certified blood glucose monitor with auto-calibration, memory storage, and USB-free data export via UART. IC Role / Device Role / Timing Role: System controller executing ISO 15197 algorithms, driving 4×32-segment LCD, managing EEPROM logging, and handling LIN bus diagnostics. Use Value: 12-bit ADC with internal reference ensures ±1.5% glucose measurement accuracy across 0–600 mg/dL range. |
| Home Appliance Control Panel | Industrial HVAC Thermostat |
|
Use Scenario: Microwave oven or washing machine front panel with multi-digit LCD, touch keys, buzzer feedback, and motor control signals. IC Role / Device Role / Timing Role: Dedicated UI controller handling key scan (KR0–KR7), buzzer output (PCLBUZ0/1), segment LCD update, and serial communication to main MCU. Use Value: On-chip buzzer controller and programmable clock output eliminate external oscillator and driver IC. |
Use Scenario: Wall-mounted thermostat with ambient temperature sensing, humidity compensation, and 4-line LCD display in commercial buildings. IC Role / Device Role / Timing Role: Standalone environmental controller reading thermistor/NTC via 13-channel ADC, updating RTC2 calendar, and driving 56-segment LCD with contrast control (VL1–VL4). Use Value: Internal voltage detector (LVD) with 12-level threshold selection prevents erratic behavior during brown-out conditions in unregulated AC-DC supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F111NJAFB#30 | Same core, memory, and peripherals but in 80-pin LFQFP (12×12 mm, 0.5 mm pitch); includes USB function disabled in firmware | Requires PCB redesign due to larger footprint and different thermal pad layout; supports same LCD and sensor functions | Select when existing 80-pin layout exists or when USB-capable variant may be needed later via firmware enable |
| R5F111PJALA#U0 | Identical 85-pin VFLGA package and pinout, but with 100-pin-equivalent peripheral set: adds P80–P83, ANI4–ANI6, and second comparator (IVCMP1/VCOUT1) | Enables higher-channel sensor aggregation (e.g., multi-zone HVAC) without changing board layout or connector | Choose when future expansion to 6 ADC channels or dual-comparator fault detection is required |
Compared with R5F111NJALA#U0, R5F111NJAFB#30 trades compact VFLGA packaging for easier hand-soldering and legacy footprint compatibility, while R5F111PJALA#U0 retains identical board space but delivers extended analog and I/O resources - both require no firmware porting due to RL78/L1C family register compatibility.
Availability
R5F111NJALA#U0 is available at Aetrix Electronics and suitable for smart meter displays, portable medical devices, home appliance control panels, and industrial thermostats requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for R5F111NJALA#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 Corporation 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 - optimized for cost-sensitive, battery-operated instrumentation where integration of display, sensing, and timing reduces system complexity and bill-of-materials.
FAQ
Does R5F111NJALA#U0 support USB functionality?
No, R5F111NJALA#U0 is explicitly a non-USB variant of the RL78/L1C family. Its USB-related pins (UDM, UDP, UREGC, UVBUS) are reserved and must remain unconnected. The "111" in the part number denotes USB-off configuration, unlike "110" variants which include functional USB 2.0 controller hardware.
What LCD segment and common configurations does R5F111NJALA#U0 support?
R5F111NJALA#U0 supports 44–56 segment outputs and 4–8 common outputs, depending on selected drive method (internal boost, capacitor split, or external resistor division). The exact count is determined by register settings - e.g., 56 segments × 4 commons or 44 segments × 8 commons - with all combinations validated in the RL78/L1C User's Manual.
Can R5F111NJALA#U0 operate from a 1.6 V supply?
Yes, R5F111NJALA#U0 guarantees full functionality across 1.6 V to 3.6 V VDD, including Flash programming, ADC conversion, and LCD driving. At 1.6 V, maximum operating frequency is reduced to 8 MHz per datasheet limits, preserving timing margins for low-voltage battery operation.
How many analog input channels are accessible on R5F111NJALA#U0?
R5F111NJALA#U0 provides 13 analog input channels: ANI0–ANI2, ANI16–ANI21 (10 total), plus AVREFP, AVREFM, and IVREF0 - all usable simultaneously with the 12-bit A/D converter when VDD ≥ 2.4 V. Channel selection is software-configurable via the ADCSR register.
Is the R5F111NJALA#U0 pinout compatible with other RL78/L1C 85-pin variants?
Yes, all RL78/L1C 85-pin VFLGA variants - including R5F111NJALA#U0, R5F111NEALA#U0, and R5F111PJALA#U0 - share identical mechanical pinout and electrical signaling per pin position. Functional differences (e.g., added ANI4–ANI6 in PJ variant) appear only on otherwise unused pins in the NJ variant, ensuring drop-in replacement within the same package group.
R5F111NJALA#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:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 16K 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:
R5F111NJALA#U0 FAQ
1.How can I place an order for R5F111NJALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F111NJALA#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 R5F111NJALA#U0 reliable?
The price and inventory of R5F111NJALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F111NJALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F111NJALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F111NJALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F111NJALA#U0?
R5F111NJALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F111NJALA#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 R5F111NJALA#U0?
For technical support, including R5F111NJALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F111NJALA#U0 requirements.
6.How does Aetrix verify that R5F111NJALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F111NJALA#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 R5F111NJALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F111NJALA#U0?
All R5F111NJALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F111NJALA#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 R5F111NJALA#U0 part is unused and in its original packaging.
Return procedure for R5F111NJALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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