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Renesas R5F10RJAAFA#50
- Part No.:
- R5F10RJAAFA#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F10RJAAFA#50.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
R5F10RJAAFA#50 from Renesas is a 16-bit RL78/L12 microcontroller with integrated LCD controller/driver, 16 KB flash, 2 KB data flash, and 1 KB RAM, operating from 1.6 V to 5.5 V. It delivers 31 DMIPS at 24 MHz, consumes only 0.64 µA in RTC+LVD halt mode, and supports up to 35 seg × 8 com LCD drive for battery-powered consumer instrumentation.
For engineers reviewing the R5F10RJAAFA#50 datasheet, R5F10RJAAFA#50 pinout, R5F10RJAAFA#50 application, or R5F10RJAAFA#50 equivalent, key selection criteria include its ultra-low-power LCD-optimized architecture, 52-pin LQFP (0.65 mm pitch) package, on-chip high-speed oscillator ±1% accuracy, and IEC 60730-compliant safety features for Class B appliance control.
Technical Context
The R5F10RJAAFA#50 implements a Harvard-architecture 16-bit RL78 CPU core with 3-stage pipeline, executing 86% of instructions in 1–2 clock cycles. It integrates a dedicated LCD controller supporting capacitor split, internal boost, and resistance division methods with 16-step contrast adjustment and blinking control.
Its peripheral set includes an 8-channel timer array (with RTC, interval timer, and window watchdog), 10-bit ADC (10 channels, 2.1 µs conversion), dual CSI interfaces (SPI-compatible), one UART, one I²C, one LIN, and DMA with two programmable channels - all optimized for low-voltage, low-power operation across −40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 16-bit RL78 CPU delivering 31 DMIPS at 24 MHz; enables real-time control in resource-constrained LCD applications |
| Flash / Data Flash / RAM | 16 KB code flash, 2 KB data flash (1M erase cycles), 1 KB RAM - sufficient for firmware + parameter storage without external memory |
| Power Consumption | 0.64 µA (halt mode with RTC + LVD); 62.5 µA/MHz active - extends battery life in portable meters and thermostats |
| LCD Drive Capability | Up to 35 segment × 8 common or 39 segment × 4 common; supports waveform A/B, internal boost, and 16-step contrast tuning |
| Analog Peripherals | 10-bit ADC with 10 input channels, 2.1 µs conversion time, internal 1.45 V reference, and on-chip temperature sensor |
| Operating Voltage / Temp | 1.6 V to 5.5 V supply; −40°C to +85°C industrial-grade operation - suitable for unregulated battery and AC/DC adapter inputs |
| Safety Features | RAM parity check, flash CRC, SFR write protection, illegal access detection, and clock frequency monitor per IEC 60730 Class B |
Pinout & Package
Package: 52-pin LQFP (10 mm × 10 mm, 0.65 mm pitch), RoHS-compliant, consumer-grade (A suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00 | Serial Clock Input/Output | Primary CSI0 channel clock; supports SPI-like communication with programmable polarity/phase |
| P11/SI00/RxD0 | Serial Data Input / UART Receive | Dual-function pin enabling either CSI0 data input or UART0 receive - reduces pin count for mixed-interface designs |
| P12/SO00/TxD0 | Serial Data Output / UART Transmit | Shared output for CSI0 and UART0; simplifies PCB routing when only one interface is used concurrently |
| P30/TI01/TO01 | Timer Input/Output | Configurable as capture input or PWM output; supports motor control or pulse-width measurement in HVAC actuators |
| P31/INTP3/RTC1HZ | Interrupt Input / RTC 1 Hz Output | Provides precise 1 Hz timing signal for calendar display updates and wake-up events without external crystal |
| P60/SCLA0 | I²C Serial Clock | Dedicated I²C clock line for sensor interfacing (e.g., temperature/humidity ICs) with built-in pull-up capability |
| P140/TO00/PCLBUZ0 | Timer Output / Buzzer Clock | Drives piezoelectric buzzer directly via PWM; eliminates external driver in alarm and notification systems |
| COM0–COM7 | LCD Common Outputs | Eight independent common drivers supporting multiplexed LCD bias; enables large-segment displays in medical devices |
| SEG0–SEG36 | LCD Segment Outputs | 37 dedicated segment outputs - supports full alphanumeric + icon display (e.g., 4-digit + status symbols) |
| VDD / VSS | Power / Ground | Single-supply operation; VDD accepts 1.6–5.5 V - compatible with coin cell, Li-ion, or regulated 3.3 V rails |
| REGC | Regulator Capacitor Terminal | Requires 0.47–1 µF capacitor to VSS for stable internal voltage regulation - critical for LCD contrast stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Halt Mode | 0.64 µA with RTC + LVD active - enables multi-year battery life in remote sensors and smart meters |
| On-Chip High-Speed Oscillator | 24 MHz ±1% over 1.8–5.5 V and −20°C to +85°C - eliminates external crystal for cost-sensitive consumer displays |
| Integrated LCD Controller | Supports 35×8 or 39×4 segment/combinations with internal boost, capacitor split, and resistance division - reduces BOM by 3–5 passive components |
| IEC 60730 Safety Compliance | Hardware-level CRC, RAM parity, SFR lock, and clock monitor - accelerates functional safety certification for white goods |
| Programmable Buzzer Output | PCLBUZ0/P140 generates variable-frequency tones directly from timer - replaces discrete oscillator circuits in UI feedback |
Applications
| Smart Thermostat Display | Portable Blood Glucose Meter |
|---|---|
Use Scenario: Battery-powered wall-mounted thermostat with 4-digit LCD, temperature sensing, and button interface. IC Role / Device Role / Timing Role: Main system controller managing sensor reads, LCD refresh, keypad scan, and HVAC relay control via GPIO/timers. Use Value: Integrated LCD driver and 0.64 µA halt current enable >5 years of operation on two AA alkaline cells. | Use Scenario: Handheld medical device displaying glucose readings, trend graphs, and calibration prompts on segmented LCD. IC Role / Device Role / Timing Role: Single-chip solution handling analog front-end (ADC), LCD drive, button debouncing, and USB/UART data export. Use Value: On-chip 10-bit ADC with internal reference and temperature sensor eliminate external precision components. |
| Energy Monitor Dashboard | Appliance Control Panel |
Use Scenario: DIN-rail mounted kWh meter with backlit LCD showing real-time power, tariff, and historical data. IC Role / Device Role / Timing Role: System-on-chip managing CT sensor interface, RTC-based logging, LCD update, and RS-485 communication. Use Value: Dual CSI interfaces support isolated RS-485 transceiver while UART handles local debug port - no external bus controller needed. | Use Scenario: Front-panel controller for washing machine with water level, spin speed, and cycle progress indicators. IC Role / Device Role / Timing Role: Dedicated UI processor driving 32-segment LCD, reading rotary encoder, controlling buzzer, and signaling main MCU via GPIO. Use Value: Hardware RTC and 16-step LCD contrast allow accurate time-of-day display and consistent readability across lighting conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RJCAFA#50 | 32 KB flash, same 52-pin LQFP package, identical peripherals and power specs | Required when firmware exceeds 16 KB or future-proofing for feature expansion is needed | Select R5F10RJCAFA#50 if code size growth is anticipated; pinout and layout remain identical |
| R5F10RFCAFP#50 | 44-pin LQFP (10×10 mm, 0.8 mm pitch), 32 KB flash, same RL78/L12 core and LCD features | Used where board space allows larger pitch or fewer I/O pins are required (40 vs. 48 I/O+LCD pins) | Choose R5F10RFCAFP#50 for simplified assembly with 0.8 mm pitch or reduced pin count requirements |
Compared with R5F10RJAAFA#50, R5F10RJCAFA#50 offers double flash capacity in identical form factor for scalable firmware, while R5F10RFCAFP#50 trades 8 fewer I/O pins and coarser pitch for broader manufacturing compatibility - both retain full LCD and safety functionality.
Availability
R5F10RJAAFA#50 is available at Aetrix Electronics and suitable for smart thermostats, portable medical devices, energy monitors, and appliance control panels requiring stable component supply across production lifecycles.
Supply support for R5F10RJAAFA#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 such as consumer appliances and portable instrumentation, integrating display control, sensing, and safety features into a single chip.
FAQ
What is the maximum operating frequency and power efficiency of the R5F10RJAAFA#50?
The R5F10RJAAFA#50 operates at up to 24 MHz using its on-chip high-speed oscillator with ±1% accuracy across voltage and temperature. It achieves 31 DMIPS performance while consuming only 62.5 µA per MHz in active mode, and drops to 0.64 µA in halt mode with RTC and LVD enabled - making it ideal for battery-critical LCD applications.
Does the R5F10RJAAFA#50 support external crystal oscillators?
Yes, the R5F10RJAAFA#50 supports external crystals on X1/X2 pins for main system clock (up to 20 MHz) and XT1/XT2 pins for subsystem clock (32.768 kHz). These are optional; the device can operate fully from its internal 24 MHz oscillator, eliminating BOM cost and board space for crystals in cost-sensitive designs.
How many LCD segments and commons does the R5F10RJAAFA#50 drive?
The R5F10RJAAFA#50 drives up to 35 segments × 8 commons or 39 segments × 4 commons, with configurable waveform types (A/B), 16-step contrast adjustment, and blinking control. Its LCD controller supports capacitor split, internal voltage boost, and resistance division methods - enabling flexible display design without external bias circuitry.
What safety certifications does the R5F10RJAAFA#50 support out of the box?
The R5F10RJAAFA#50 includes hardware-level safety features aligned with IEC 60730 Class B requirements: flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access monitoring, clock frequency detection, and ADC self-test - reducing software certification effort for household appliance control.
Is the R5F10RJAAFA#50 pin-compatible with other RL78/L12 variants?
Yes, all 52-pin RL78/L12 variants including R5F10RJAAFA#50, R5F10RJCAFA#50, and R5F10RJ8AFA#50 share identical pinouts and package dimensions (PLQP0052JA-A). This allows direct flash-capacity upgrades without PCB revision - for example, migrating from 16 KB to 32 KB flash while retaining full hardware compatibility.
R5F10RJAAFA#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-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:
- 37
- 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 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10RJAAFA#50 FAQ
1.How can I place an order for R5F10RJAAFA#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RJAAFA#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 R5F10RJAAFA#50 reliable?
The price and inventory of R5F10RJAAFA#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RJAAFA#50 is usually 5 days.
3.What payment methods are accepted for R5F10RJAAFA#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RJAAFA#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RJAAFA#50?
R5F10RJAAFA#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RJAAFA#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 R5F10RJAAFA#50?
For technical support, including R5F10RJAAFA#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RJAAFA#50 requirements.
6.How does Aetrix verify that R5F10RJAAFA#50 is sourced from the original manufacturer or authorized distributors?
All R5F10RJAAFA#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 R5F10RJAAFA#50 meets industry standards.
7.What is the process for return or replacement of R5F10RJAAFA#50?
All R5F10RJAAFA#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RJAAFA#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 R5F10RJAAFA#50 part is unused and in its original packaging.
Return procedure for R5F10RJAAFA#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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