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Renesas R5F10RJ8GFA#X0
- Part No.:
- R5F10RJ8GFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F10RJ8GFA#X0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,796
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Product details
Overview
R5F10RJ8GFA#X0 from Renesas is an 8 KB flash, 1.5 KB RAM, 52-pin LQFP (10 × 10 mm, 0.65 mm pitch) RL78/L12 microcontroller with integrated LCD controller/driver, 10-bit ADC (10 channels), RTC, and ultra-low-power operation (0.64 µA in Halt mode with RTC + LVD). It targets battery-powered LCD display applications such as smart meters, thermostats, and portable medical devices.
For engineers reviewing the R5F10RJ8GFA#X0 datasheet, R5F10RJ8GFA#X0 pinout, R5F10RJ8GFA#X0 application, or R5F10RJ8GFA#X0 equivalent, key selection criteria include its 52-pin LQFP package, industrial-grade −40°C to +105°C operation, on-chip LCD drive up to 35 seg × 8 com, 2 KB data flash with 1 million erase cycles, and 24 MHz high-speed on-chip oscillator with ±1% accuracy across voltage and temperature.
Technical Context
The R5F10RJ8GFA#X0 implements the 16-bit RL78 CPU core delivering 31 DMIPS at 24 MHz, with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It supports snooze mode for low-latency wake-up from ultra-low-power states.
Its integrated LCD controller supports capacitor split, internal voltage boost, and resistance division methods with 16-step contrast adjustment and blinking control. The analog subsystem includes a 10-bit ADC with 2.1 µs conversion time, internal 1.45 V reference, and on-chip temperature sensor - all operable down to 1.6 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 16-bit RL78 CPU, 31 DMIPS @ 24 MHz, 86% instructions in 1–2 cycles |
| Memory | 8 KB code flash, 2 KB data flash (1M erase cycles), 1.5 KB RAM with backup retention |
| Power Modes | Halt (RTC + LVD): 0.64 µA; Operating: 62.5 µA/MHz; LCD boost mode: 0.63 µA @ 3.0 V |
| LCD Drive | Up to 35 seg × 8 com or 39 seg × 4 com; supports waveform A/B, 16-step contrast, blink |
| ADC | 10-bit resolution, 10 channels, 2.1 µs conversion, internal 1.45 V reference, works down to 1.6 V |
| Operating Range | 1.6 V to 5.5 V supply; −40°C to +105°C ambient (industrial grade) |
| Oscillator | 24 MHz on-chip oscillator (±1% over 1.8–5.5 V & −20°C to 85°C); pre-configured 1–24 MHz settings |
Pinout & Package
Package: 52-pin plastic LQFP (10 × 10 mm, 0.65 mm pitch), RoHS-compliant, industrial temperature grade (−40°C to +105°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P12/SO00/TxD0/TOOLTxD/SEG30 | Serial output / UART TX / LCD segment | Multi-function pin supporting full-duplex UART, debug interface, and LCD segment drive |
| P11/SI00/RxD0/TOOLRxD/SEG29 | Serial input / UART RX / LCD segment | Enables UART communication and tool interface while sharing LCD segment capability |
| P10/SCK00/TI07/TO07/SEG28 | SPI clock / timer I/O / LCD segment | Supports synchronous serial communication and precise timing functions alongside LCD drive |
| P140/TO00/PCLBUZ0/SEG27 | Timer output / buzzer / LCD segment | Delivers programmable tone generation and LCD segment control from same pin |
| P30/TI01/TO01/KR3/SEG19 | Timer I/O / key return / LCD segment | Enables keypad scanning, PWM output, and LCD segment drive without external components |
| COM0–COM3 | LCD common outputs | Four dedicated common-line drivers supporting multiplexed LCD biasing |
| VL1–VL4 | LCD power supply rails | Independent voltage taps for LCD bias generation using internal charge pump or external resistors |
| REGC | Voltage regulator decoupling | Requires 0.47–1 µF capacitor to VSS for stable internal regulator operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Halt mode | 0.64 µA with RTC and LVD active - enables multi-year battery life in metering applications |
| Integrated LCD controller | Drives up to 280 segments (35×8) without external bias circuitry or external driver IC |
| Data flash with background operation | 2 KB EEPROM-like memory enabling firmware updates and parameter storage during runtime |
| On-chip debug via TOOL0 | Single-wire debug interface eliminates need for dedicated JTAG/SWD pins or external debugger |
| IEC/UL 60730 safety features | CRC calculation, RAM parity check, SFR write protection, illegal access detection for certified designs |
Applications
| Smart Energy Meter | Industrial Thermostat |
|---|---|
Use Scenario: Battery- or line-powered utility meter with segmented LCD display showing kWh, tariff, and time-of-use data. IC Role / Device Role / Timing Role: Primary system controller executing metering algorithms, managing real-time calendar via RTC, and driving 4-digit LCD with 32-segment layout. Use Value: Ultra-low 0.64 µA Halt current extends battery life beyond 10 years; integrated LCD driver eliminates external bias IC and reduces BOM cost by $0.15–$0.25. |
Use Scenario: Wall-mounted HVAC controller with 2-line LCD, temperature sensing, and relay control for heating/cooling stages. IC Role / Device Role / Timing Role: Central MCU handling sensor acquisition (ADC), user input (key return pins KR0–KR3), display update, and timed relay actuation. Use Value: On-chip 10-bit ADC with internal reference enables accurate ±0.5°C temperature measurement; 1.6 V minimum operation supports brown-out resilience during AC dips. |
| Portable Medical Monitor | Appliance Control Panel |
Use Scenario: Handheld pulse oximeter or blood glucose meter with monochrome LCD, button interface, and USB/UART diagnostics. IC Role / Device Role / Timing Role: Main controller running safety-critical firmware, managing optical sensor ADC reads, driving 24-segment display, and supporting bootloader via UART. Use Value: IEC 60730-certified safety features (RAM parity, CRC, illegal access detection) reduce functional safety validation effort; 2 KB data flash stores calibration coefficients and usage logs. |
Use Scenario: Microwave oven or washing machine control panel with 4-digit LCD, membrane keypad, buzzer feedback, and motor timing. IC Role / Device Role / Timing Role: Dedicated UI controller handling key scan (KR0–KR3), buzzer tone generation (PCLBUZ0), segment LCD update, and precise cooking cycle timing. Use Value: Integrated PCLBUZ0 output generates audible alerts without external driver; timer array unit provides independent 8-channel timing for motor phases and display refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RJAGFA#X0 | 16 KB flash, same 52-pin LQFP package, identical peripherals and power specs | Required when firmware exceeds 8 KB or future-proofing for feature expansion is needed | Select R5F10RJAGFA#X0 if application requires >8 KB code space while retaining identical pinout and LCD capability |
| R5F10RG8GFB#X0 | 48-pin LFQFP (7 × 7 mm, 0.5 mm pitch), 8 KB flash, same core/peripherals but fewer I/O (44 vs 48) | Suitable for space-constrained designs where LCD segment count ≤26 and PCB area is critical | Choose R5F10RG8GFB#X0 only when board real estate is limited and 48-pin footprint is acceptable |
Compared with R5F10RJ8GFA#X0, R5F10RJAGFA#X0 offers double flash capacity without changing layout, while R5F10RG8GFB#X0 reduces package size by 27% but sacrifices 4 I/O pins and 4 LCD segments - making it viable only for compact, lower-I/O variants.
Availability
R5F10RJ8GFA#X0 is available at Aetrix Electronics and suitable for smart energy meters, industrial thermostats, and portable medical monitors requiring stable component supply, long-term lifecycle support, and industrial-temperature-grade reliability.
Supply support for R5F10RJ8GFA#X0 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 is designed specifically for ultra-low-power LCD-based applications - integrating high-efficiency CPU, LCD driver, RTC, and safety features into a single chip for battery-operated instrumentation and controls.
FAQ
What is the maximum LCD segment count supported by the R5F10RJ8GFA#X0?
The R5F10RJ8GFA#X0 supports up to 35 segment × 8 common (280 segments) or 39 segment × 4 common (156 segments) using its integrated LCD controller/driver. This configuration is confirmed in the RL78/L12 datasheet (R01DS0157EJ0223 Rev.2.23, Page 1) and applies directly to the R5F10RJ8GFA#X0 variant per its 52-pin package specification.
Does the R5F10RJ8GFA#X0 include hardware support for functional safety standards?
Yes, the R5F10RJ8GFA#X0 includes IEC/UL 60730-compliant safety features: flash memory CRC calculation, RAM parity error check, RAM write protection, SFR write protection, illegal memory access detection, clock frequency detection, and ADC self-test - all documented in the RL78/L12 datasheet Section 1.1 Features.
What is the operating voltage range and temperature grade of the R5F10RJ8GFA#X0?
The R5F10RJ8GFA#X0 operates from 1.6 V to 5.5 V and is rated for industrial temperature range of −40°C to +105°C, as indicated by the "G" suffix in its part number and confirmed in Table 1-1 (Page 4) and Section 1.6 (Page 18) of the RL78/L12 datasheet.
How much data flash memory does the R5F10RJ8GFA#X0 provide, and what is its endurance?
The R5F10RJ8GFA#X0 includes 2 KB of data flash memory with typical endurance of 1 million erase/program cycles, supporting background operation for runtime parameter storage and firmware updates - specified in Section 1.1 Features and Table 1-1 of the RL78/L12 datasheet.
Is the R5F10RJ8GFA#X0 pin-compatible with other RL78/L12 variants in the 52-pin family?
Yes, all RL78/L12 52-pin variants - including R5F10RJ8GFA#X0, R5F10RJAGFA#X0, and R5F10RJCGFA#X0 - share identical pinout, package (LQFP, 0.65 mm pitch), and peripheral mapping, enabling seamless migration between 8 KB, 16 KB, and 32 KB flash options without PCB changes.
R5F10RJ8GFA#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- RL78/L12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10RJ8GFA#X0 FAQ
1.How can I place an order for R5F10RJ8GFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RJ8GFA#X0 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 R5F10RJ8GFA#X0 reliable?
The price and inventory of R5F10RJ8GFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RJ8GFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F10RJ8GFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RJ8GFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RJ8GFA#X0?
R5F10RJ8GFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RJ8GFA#X0 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 R5F10RJ8GFA#X0?
For technical support, including R5F10RJ8GFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RJ8GFA#X0 requirements.
6.How does Aetrix verify that R5F10RJ8GFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F10RJ8GFA#X0 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 R5F10RJ8GFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F10RJ8GFA#X0?
All R5F10RJ8GFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RJ8GFA#X0, 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 R5F10RJ8GFA#X0 part is unused and in its original packaging.
Return procedure for R5F10RJ8GFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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