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Renesas R5F10RJ8AFA#10
- Part No.:
- R5F10RJ8AFA#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F10RJ8AFA#10.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,280
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Product details
Overview
R5F10RJ8AFA#10 from Renesas is an 8 KB flash, 1 KB RAM, 52-pin LQFP (10 × 10 mm, 0.65 mm pitch) RL78/L12 microcontroller optimized for ultra-low-power LCD-based applications. It delivers 31 DMIPS at 24 MHz, operates from 1.6 V to 5.5 V, achieves 62.5 µA/MHz active current and 0.64 µA RTC+LVD halt mode, and integrates a full-featured LCD controller supporting up to 35 seg × 8 com.
For engineers reviewing the R5F10RJ8AFA#10 datasheet, R5F10RJ8AFA#10 pinout, R5F10RJ8AFA#10 application, or R5F10RJ8AFA#10 equivalent, this MCU is selected for battery-powered instrumentation, portable medical devices, and energy-metering front panels where integrated LCD drive, sub-µA real-time operation, and IEC 60730 safety features are mandatory.
Technical Context
The R5F10RJ8AFA#10 implements the 16-bit RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It supports on-chip debug via 1-wire TOOL0 interface and includes a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature) plus low-speed subsystem clock (32.768 kHz).
Its integrated peripherals include a 10-channel 10-bit ADC (2.1 µs conversion), dual DMA channels, UART/I²C/CSI interfaces, 8-channel timer array with RTC calendar/alarm, and LCD controller with capacitor-split, internal-boost, and resistor-division waveform support - all operating within −40°C to +85°C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 16-bit RL78 CPU delivering 31 DMIPS at 24 MHz; enables responsive UI and sensor processing in resource-constrained LCD systems. |
| Flash / RAM | 8 KB code flash + 2 KB data flash + 1 KB RAM; sufficient for bootloader, calibration tables, and real-time LCD frame buffering. |
| Power Modes | Halt (RTC + LVD): 0.64 µA; Stop (RAM retained): 0.23 µA; Operating: 62.5 µA/MHz - extends battery life in always-on display applications. |
| LCD Drive | Supports up to 35 seg × 8 com or 39 seg × 4 com; configurable waveform types A/B and 16-step contrast adjustment for high-visibility displays. |
| Analog | 10-bit ADC with 10 channels, 2.1 µs conversion, internal 1.45 V reference, and on-chip temperature sensor - enables local sensing without external components. |
| Safety | IEC/UL 60730-compliant features: flash CRC, RAM parity check, SFR write protection, illegal access detection, and clock frequency monitor. |
Pinout & Package
Package: 52-pin LQFP (10 × 10 mm, 0.65 mm pitch), RoHS-compliant, consumer-grade (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P17 | Port 1 I/O | 8-bit general-purpose port with interrupt capability; used for keypad scanning, LED control, or system status signaling. |
| P20/P21 | ADC inputs / AVREFP/AVREFM | Analog input pair with dedicated reference pins - enables precise ratiometric measurements independent of VDD variation. |
| P30–P32 | Timer I/O / RTC1HZ / INTP3/4 | Supports TO01/TI01 for PWM generation, RTC1HZ output for timekeeping sync, and external interrupt triggering. |
| P40–P42 | Tool interface / ANI16–17 / TI04–05 | TOOL0 enables in-circuit debugging; ANI16/17 extend analog sensing; TI04/TI05 add timer capture for pulse-width measurement. |
| P60/P61 | I²C SCLA0/SDAA0 | Dedicated hardware I²C interface - simplifies communication with EEPROMs, sensors, or PMICs without bit-banging overhead. |
| P121/P122 | X1/X2 crystal inputs | Connects to 1–20 MHz crystal for main system clock; supports high-accuracy timing for UART baud generation and RTC calibration. |
| P140/P141 | TO00/PCLBUZ0 / TI00/PCLBUZ1 | Programmable buzzer outputs with timer-driven tone generation - eliminates need for external audio drivers in alarm systems. |
| COM0–COM7 / SEG0–SEG36 | LCD common/segment outputs | Direct drive of up to 280-segment LCD (35×8) using internal boost or capacitor-split method - reduces BOM count and PCB area. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.64 µA halt mode with RTC + LVD active enables multi-year battery life in portable meters and thermostats. |
| Integrated LCD controller | Configurable drive methods (capacitor split/internal boost/resistor division) eliminate external bias ICs and reduce display subsystem cost by ≥30%. |
| Hardware safety mechanisms | On-chip CRC, RAM parity, and illegal memory access detection satisfy Class B functional safety requirements without external monitoring circuitry. |
| Flexible clock system | High-speed on-chip oscillator (24 MHz ±1%) eliminates crystal cost and layout sensitivity while maintaining UART timing accuracy across voltage/temperature. |
| Peripheral I/O redirection | PIOR register allows dynamic remapping of UART, CSI, and timer functions to alternate pins - increases PCB routing flexibility and design reuse. |
Applications
| Smart Energy Meter Display | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered electricity meter with segmented LCD showing kWh, voltage, current, and tariff information. IC Role / Device Role / Timing Role: Primary system controller executing metering firmware, driving LCD segments/comms, and managing real-time billing intervals. Use Value: Integrated LCD driver and 0.64 µA RTC+LVD mode enable >10-year battery life; 10-bit ADC measures auxiliary supply rails for self-diagnostics. |
Use Scenario: Handheld pulse oximeter with monochrome LCD displaying SpO₂, pulse rate, and battery status. IC Role / Device Role / Timing Role: Central MCU handling optical sensor signal acquisition, LCD refresh, button interface, and low-power sleep/wake scheduling. Use Value: On-chip temperature sensor calibrates LED drive current; 31 DMIPS processes IR/red photodiode signals in real time without external DSP. |
| Industrial Thermostat Panel | Home Appliance Control Board |
Use Scenario: Wall-mounted HVAC controller with 4-digit LCD, rotary encoder, and relay outputs. IC Role / Device Role / Timing Role: Main application processor managing user input, PID loop execution, LCD update, and relay timing. Use Value: 52-pin package provides ample GPIO for keypad, relays, and sensors; 8 KB flash accommodates multi-language UI and calibration data. |
Use Scenario: Microwave oven control panel with segmented LCD, touch keys, buzzer feedback, and cooking timer. IC Role / Device Role / Timing Role: System-on-chip managing key scan, LCD animation, audible alerts via PCLBUZ0/1, and cooking state machine. Use Value: Dual buzzer outputs generate distinct tones for door open, timer end, and error conditions; built-in LVD prevents erratic behavior during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RJAAFA#10 | 16 KB flash, same 52-pin LQFP package, identical peripherals and power specs. | Required when firmware exceeds 8 KB or when field-upgradable code space is needed for feature expansion. | Select R5F10RJAAFA#10 if future firmware updates, cryptographic libraries, or multi-language UI assets demand >8 KB flash. |
| R5F10RJCAFA#10 | 32 KB flash, same package and peripheral set; retains 1 KB RAM and 0.64 µA RTC+LVD mode. | Suitable for complex HMI stacks with graphics acceleration, OTA update buffers, or extensive calibration tables. | Choose R5F10RJCAFA#10 for next-generation designs requiring headroom for safety-certified middleware or secure boot partitions. |
Compared with R5F10RJ8AFA#10, the R5F10RJAAFA#10 and R5F10RJCAFA#10 offer scalable flash capacity while preserving identical pinout, power profile, LCD capabilities, and safety features - enabling seamless hardware reuse across product tiers without PCB redesign.
Availability
R5F10RJ8AFA#10 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, industrial thermostat panels, and home appliance control boards requiring stable component supply across long production lifecycles.
Supply support for R5F10RJ8AFA#10 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/L12 product line targets ultra-low-power LCD-based applications such as utility meters, medical handhelds, and appliance interfaces - emphasizing integrated display control, extended battery life, and functional safety compliance.
FAQ
What is the maximum operating frequency and performance of the R5F10RJ8AFA#10?
The R5F10RJ8AFA#10 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS. Its 16-bit RL78 CPU core executes 86% of instructions in 1–2 clock cycles, enabling efficient real-time control and sensor processing in LCD-based systems without external acceleration.
Does the R5F10RJ8AFA#10 support hardware-based functional safety standards?
Yes, the R5F10RJ8AFA#10 includes IEC/UL 60730-compliant safety features: flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, and clock frequency monitoring - enabling Class B certification without external safety monitors.
What LCD configurations does the R5F10RJ8AFA#10 support?
The R5F10RJ8AFA#10 supports up to 35 segment × 8 common or 39 segment × 4 common LCD drive, with selectable waveform types (A/B), 16-step contrast adjustment, blinking control, and three drive methods: capacitor split, internal voltage boost, and external resistance division.
What are the power consumption characteristics of the R5F10RJ8AFA#10 in low-power modes?
In halt mode with RTC and LVD enabled, the R5F10RJ8AFA#10 consumes 0.64 µA; in stop mode with RAM retention, it draws 0.23 µA (LVD disabled) or 0.31 µA (LVD enabled). Active current is 62.5 µA/MHz, and LCD operating current is 0.12 µA (capacitor split) or 0.63 µA (internal boost at 3.0 V).
Which communication interfaces are integrated into the R5F10RJ8AFA#10?
The R5F10RJ8AFA#10 integrates one UART (7-/8-/9-bit), one I²C multi-master interface (SCLA0/SDAA0), two simplified SPI (CSI00/CSI01), and one LIN interface - all accessible via dedicated hardware blocks and configurable through the peripheral I/O redirection register (PIOR).
R5F10RJ8AFA#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- RL78/L12
- Packaging:
- Tray
- 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:
- 30
- Program Memory Size:
- 8KB (8K 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:
R5F10RJ8AFA#10 FAQ
1.How can I place an order for R5F10RJ8AFA#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RJ8AFA#10 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 R5F10RJ8AFA#10 reliable?
The price and inventory of R5F10RJ8AFA#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RJ8AFA#10 is usually 5 days.
3.What payment methods are accepted for R5F10RJ8AFA#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RJ8AFA#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RJ8AFA#10?
R5F10RJ8AFA#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RJ8AFA#10 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 R5F10RJ8AFA#10?
For technical support, including R5F10RJ8AFA#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RJ8AFA#10 requirements.
6.How does Aetrix verify that R5F10RJ8AFA#10 is sourced from the original manufacturer or authorized distributors?
All R5F10RJ8AFA#10 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 R5F10RJ8AFA#10 meets industry standards.
7.What is the process for return or replacement of R5F10RJ8AFA#10?
All R5F10RJ8AFA#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RJ8AFA#10, 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 R5F10RJ8AFA#10 part is unused and in its original packaging.
Return procedure for R5F10RJ8AFA#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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