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Renesas R5F10RLAAFB#50
- Part No.:
- R5F10RLAAFB#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F10RLAAFB#50.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
R5F10RLAAFB#50 from Renesas is a 64-pin LFQFP-packaged 16-bit RL78/L12 microcontroller with integrated LCD controller/driver, 16 KB flash, 2 KB data flash, and 1 KB RAM. It operates from 1.6 V to 5.5 V, delivers 31 DMIPS at 24 MHz, and achieves ultra-low power consumption (62.5 µA/MHz active, 0.64 µA in RTC+LVD halt mode), targeting battery-powered LCD display applications such as smart meters and portable medical devices.
For engineers reviewing the R5F10RLAAFB#50 datasheet, R5F10RLAAFB#50 pinout, R5F10RLAAFB#50 application, or R5F10RLAAFB#50 equivalent, this page provides verified technical context, exact pin functions for 64-pin LFQFP, low-power design trade-offs, LCD segment/com configuration limits (39 seg × 4 com or 35 seg × 8 com), and validated alternative parts for consumer-grade LCD MCU migration.
Technical Context
The R5F10RLAAFB#50 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and CISC instruction set enabling 86% of instructions in 1–2 clock cycles. It integrates a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature) and supports external crystal inputs (X1/X2, XT1/XT2) for main and subsystem clocks.
Its dedicated LCD controller supports three drive methods (capacitor split, internal boost, resistance division), 16-step contrast control, blinking, and waveform A/B selection. Real-time clock (RTC) includes full calendar, alarm, and watch correction functions, while safety features include flash CRC, RAM parity, SFR write protection, and illegal memory access detection per IEC/UL 60730.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 16-bit RL78 CPU delivering 31 DMIPS at 24 MHz; 86% instructions execute in 1–2 cycles |
| Memory | 16 KB code flash (1 KB blocks), 2 KB data flash (1M erase cycles), 1 KB RAM with backup retention |
| Power | 1.6 V–5.5 V operation; 0.64 µA RTC+LVD halt current; 62.5 µA/MHz active current |
| LCD Support | Up to 39 segments × 4 commons or 35 segments × 8 commons; capacitor split/internal boost/resistance division methods |
| Analog | 10-channel 10-bit ADC (2.1 µs conversion), internal 1.45 V reference, on-chip temperature sensor |
| Peripherals | 1 UART, 2 CSI (SPI-compatible), 1 I²C, 8-channel timer array, RTC, 12-bit interval timer, 15 kHz watchdog |
| Package | 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch); consumer temp range (−40°C to +85°C) |
Pinout & Package
64-pin plastic LFQFP (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, tape-and-reel packaging (#X0 / #50).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10 | SCK00 / SEG28 | CSI00 serial clock input/output; LCD segment 28 output |
| P11 | SI00 / RxD0 / TOOLRxD / SEG29 | CSI00 serial data input; UART0 receive; debug interface RX; LCD segment 29 |
| P12 | SO00 / TxD0 / TOOLTxD / SEG30 | CSI00 serial data output; UART0 transmit; debug interface TX; LCD segment 30 |
| P140 | TO00 / PCLBUZ0 / KR3 / SEG27 | Timer output 0; programmable buzzer clock; key return 3; LCD segment 27 |
| P141 | TI00 / PCLBUZ1 / SEG26 | Timer input 0; second buzzer clock; LCD segment 26 |
| COM0–COM7 | LCD common outputs | Drive up to 8 LCD commons; support 4- or 8-com configurations |
| SEG0–SEG38 | LCD segment outputs | 39 dedicated segment drivers; configurable for 35×8 or 39×4 LCD layouts |
| VDD / EVDD | Core & I/O power supply | Separate power domains recommended for noise-sensitive LCD applications |
| VSS / EVSS | Core & I/O ground | Must be tied together; separate grounding improves LCD noise immunity |
| REGC | Regulator decoupling | Connect 0.47–1 µF capacitor to VSS for internal voltage regulator stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power modes | 0.64 µA RTC+LVD halt mode enables multi-year battery life in portable LCD instruments |
| Integrated LCD driver | Configurable for 35×8 or 39×4 displays without external bias circuitry or charge pumps |
| Self-programmable flash | On-the-fly firmware updates via background data flash operation with shield window protection |
| Hardware safety features | CRC calculation, RAM parity, SFR write lock, and illegal access detection meet IEC/UL 60730 Class B requirements |
| Flexible clock system | 24 MHz on-chip oscillator ±1% accuracy eliminates need for external crystal in cost-sensitive designs |
Applications
| Smart Energy Meters | Portable Medical Devices |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter with segmented LCD display showing consumption, tariff, and status. IC Role / Device Role / Timing Role: Primary system controller managing metrology interface, real-time clock, LCD refresh, and secure firmware updates. Use Value: 0.64 µA RTC+LVD halt current extends battery life beyond 10 years; integrated LCD driver reduces BOM count by 3–5 components. |
Use Scenario: Handheld blood glucose monitor or pulse oximeter with low-power LCD readout and button interface. IC Role / Device Role / Timing Role: Central MCU handling analog sensor acquisition (ADC), key scan (KR0–KR3), LCD update, and low-battery alert timing. Use Value: 10-bit ADC with internal reference enables accurate sensor readings; 1.6 V minimum operating voltage supports single-cell alkaline operation. |
| Home Appliance Control Panels | Industrial HMI Displays |
Use Scenario: Microwave oven or washing machine front panel with 4-digit LCD, touch keys, and buzzer feedback. IC Role / Device Role / Timing Role: Dedicated UI controller driving LCD segments, scanning key returns (KR0–KR3), generating buzzer tones (PCLBUZ0/1), and managing user input timing. Use Value: Integrated buzzer clock eliminates external tone generator IC; 5V-tolerant GPIO simplifies connection to mechanical switches and LEDs. |
Use Scenario: Panel-mounted industrial thermostat or environmental monitor with large-segment LCD and RS-485 communication. IC Role / Device Role / Timing Role: Local display controller interfacing with host MCU via UART/I²C while independently managing LCD refresh and RTC-based logging. Use Value: Hardware RTC with calendar and alarm allows time-stamped event logging without host intervention; 64-pin package provides ample GPIO for expansion headers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RLCAFB#50 | 32 KB flash (vs. 16 KB), same 64-pin LFQFP package, identical peripherals and power specs | Required when firmware exceeds 16 KB or future-proofing for feature expansion is needed | Select R5F10RLCAFB#50 if code size growth is anticipated; pinout and layout are identical |
| R5F10RGAAFB#50 | 48-pin LFQFP (7×7 mm), 16 KB flash, same core/peripherals but reduced I/O (44 pins vs. 58) and LCD capacity (35 seg × 4 com) | Suitable for space-constrained designs where full 64-pin I/O and 39-segment LCD are unnecessary | Choose R5F10RGAAFB#50 for smaller PCB footprint and lower cost when segment count ≤35 and I/O ≤44 suffice |
Compared with R5F10RLAAFB#50, R5F10RLCAFB#50 offers double flash capacity without layout changes, while R5F10RGAAFB#50 trades 16 pins and 4 LCD segments for 30% smaller package area-enabling compact designs where full 64-pin resources are unused.
Availability
R5F10RLAAFB#50 is available at Aetrix Electronics and suitable for smart energy meters, portable medical devices, and home appliance control panels requiring stable component supply across extended production lifecycles.
Supply support for R5F10RLAAFB#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 automotive, industrial, and IoT markets.
The RL78/L12 product line targets ultra-low-power LCD-based applications, integrating specialized display drivers, precision RTC, and robust safety features for consumer and industrial instrumentation.
FAQ
What is the maximum LCD segment count supported by the R5F10RLAAFB#50?
The R5F10RLAAFB#50 supports up to 39 segment outputs and 8 common outputs, enabling configurations of 39 segments × 4 commons or 35 segments × 8 commons. This matches the physical pin count and internal LCD controller capability documented in the R01DS0157EJ0223 datasheet Section 1.6.
Does the R5F10RLAAFB#50 require an external crystal for operation?
No-the R5F10RLAAFB#50 includes a high-speed on-chip oscillator rated at 24 MHz ±1% over voltage (1.8–5.5 V) and temperature (−20°C to 85°C), eliminating the need for external crystals in most applications. External crystals (X1/X2, XT1/XT2) remain optional for higher precision or subsystem clocking.
What is the operating temperature range for the R5F10RLAAFB#50?
The R5F10RLAAFB#50 is specified for consumer applications with an ambient operating temperature range of −40°C to +85°C, as indicated by the 'A' suffix in the part number per Figure 1-1 of the datasheet. Industrial-grade variants (e.g., R5F10RLAGFB#50) extend to +105°C.
How much current does the R5F10RLAAFB#50 draw in RTC-only operation?
In halt mode with only the real-time clock (RTC) and low-voltage detector (LVD) active, the R5F10RLAAFB#50 draws 0.64 µA, as confirmed in Section 1.1 "Ultra-Low Power Technology" of the R01DS0157EJ0223 datasheet. This enables decade-long battery life in always-on display applications.
Is the R5F10RLAAFB#50 pin-compatible with other RL78/L12 64-pin variants?
Yes-the R5F10RLAAFB#50 shares identical 64-pin LFQFP pinout and electrical characteristics with all other RL78/L12 64-pin members (e.g., R5F10RLCAFB#50, R5F10RLAGFB#50), differing only in flash size, temperature grade, or packaging specification. No PCB redesign is required when migrating between these variants.
R5F10RLAAFB#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/L12
- 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:
- DMA, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 47
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10RLAAFB#50 FAQ
1.How can I place an order for R5F10RLAAFB#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RLAAFB#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 R5F10RLAAFB#50 reliable?
The price and inventory of R5F10RLAAFB#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RLAAFB#50 is usually 5 days.
3.What payment methods are accepted for R5F10RLAAFB#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RLAAFB#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RLAAFB#50?
R5F10RLAAFB#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RLAAFB#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 R5F10RLAAFB#50?
For technical support, including R5F10RLAAFB#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RLAAFB#50 requirements.
6.How does Aetrix verify that R5F10RLAAFB#50 is sourced from the original manufacturer or authorized distributors?
All R5F10RLAAFB#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 R5F10RLAAFB#50 meets industry standards.
7.What is the process for return or replacement of R5F10RLAAFB#50?
All R5F10RLAAFB#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RLAAFB#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 R5F10RLAAFB#50 part is unused and in its original packaging.
Return procedure for R5F10RLAAFB#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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