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Renesas R5F10RJ8GFA#10
- Part No.:
- R5F10RJ8GFA#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F10RJ8GFA#10.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,189
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Product details
Overview
R5F10RJ8GFA#10 from Renesas is an 8 KB flash, 1.5 KB RAM, 52-pin LQFP microcontroller in the RL78/L12 family, featuring integrated LCD controller/driver (up to 35 seg × 8 com), 10-bit ADC (10 channels), RTC with calendar/alarm, and ultra-low-power operation (0.64 µA in Halt mode with RTC + LVD). It targets battery-powered LCD display systems such as smart meters, thermostats, and industrial HMI panels.
For engineers reviewing the R5F10RJ8GFA#10 datasheet, R5F10RJ8GFA#10 pinout, R5F10RJ8GFA#10 application, or R5F10RJ8GFA#10 equivalent, key selection criteria include its 52-pin 0.65 mm pitch LQFP package, industrial-grade −40°C to +105°C operation, on-chip LCD drive capability with capacitor-split and internal-boost methods, and support for I²C, UART, and simplified SPI interfaces.
Technical Context
The R5F10RJ8GFA#10 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 cycles. Its low-power design integrates a high-speed on-chip oscillator (±1% accuracy from 1.8 V to 5.5 V), programmable LVD (14 voltage thresholds), and snooze mode for selective peripheral wake-up.
It embeds a dedicated LCD controller supporting waveform types A/B, 16-step contrast adjustment, blinking control, and three drive methods-capacitor split (0.12 µA LCD current), internal voltage boost (0.63 µA at VDD = 3.0 V), and resistance division-enabling direct drive of segment-based displays without external bias circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RL78 CISC with 3-stage pipeline; enables deterministic real-time response in resource-constrained LCD applications |
| Max Operating Frequency | 24 MHz with ±1% on-chip oscillator; eliminates need for external crystal in cost-sensitive designs |
| Flash / Data Flash / RAM | 8 KB code flash, 2 KB data flash (1M erase cycles), 1.5 KB RAM; supports background data flash writes and self-programming |
| Low-Power Modes | Halt mode draws 0.64 µA (RTC + LVD active); Stop mode draws 0.23 µA (RAM retained); enables multi-year battery life |
| LCD Drive Capability | Up to 35 segments × 8 commons; supports capacitor-split, internal-boost, and resistor-division methods; no external LCD bias required |
| Analog Peripherals | 10-channel 10-bit ADC (2.1 µs conversion), on-chip temperature sensor, internal 1.45 V reference; suitable for sensor monitoring in metering |
| Communication Interfaces | 1× I²C, 2× simplified SPI (CSI), 1× UART (7/8/9-bit), 1× LIN; sufficient for sensor hub and display interface coexistence |
Pinout & Package
Package: 52-pin plastic LQFP (10 × 10 mm, 0.65 mm pitch), industrial-grade (−40°C to +105°C), lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P17 | Port 1 I/O | General-purpose CMOS I/O with interrupt capability; configurable as LCD segment outputs (SEG28–SEG31) |
| P30–P32 | Port 3 I/O | Timer I/O (TI01/TO01, TI03/TO03), RTC1HZ output, and LCD segment (SEG19–SEG17) |
| P40–P42 | Port 4 I/O | Tool interface (TOOL0), analog inputs (ANI16–ANI18), timer I/O (TI04–TI05) |
| P50–P51 | Port 5 I/O | Interrupt inputs (INTP5), timer I/O (TI06/TO06), LCD segment (SEG7–SEG8) |
| P60–P61 | I²C Interface | SCLA0/SDAA0 pins; enable standard-mode I²C communication with external sensors or EEPROM |
| P70–P71 | Key Return | KR0/KR1 inputs; support matrix keypad scanning without external logic |
| COM0–COM7 | LCD Common Outputs | Drive up to 8 LCD commons; compatible with multiplexed segment displays |
| SEG0–SEG36 | LCD Segment Outputs | 37 dedicated segment drivers; mapped across ports P1, P3–P5, P7, P12, P14 for flexible display layout |
| VDD / VSS | Power / Ground | Single 1.6–5.5 V supply; supports direct battery operation (e.g., 3 V coin cell or 4×AA) |
| REGC | Regulator Capacitor | Connect 0.47–1 µF capacitor to VSS; stabilizes internal voltage regulator for LCD and analog circuits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power LCD Operation | 0.12 µA LCD current using capacitor-split method; extends battery life in always-on display applications |
| Integrated RTC with Calendar | Full BCD calendar (year/month/day/hour/min/sec) + alarm + watch correction; eliminates external RTC IC |
| On-Chip Debug Support | 1-wire on-chip debug via TOOL0/P40; enables in-system programming and real-time trace without JTAG header |
| Functional Safety Compliance | Built-in CRC calculation, RAM parity check, SFR write protection, and illegal memory access detection per IEC/UL 60730 |
| Flexible Clock Sources | High-speed on-chip oscillator (24 MHz), external crystal (X1/X2), subsystem clock (XT1/XT2), and low-speed 15 kHz RC oscillator |
Applications
| Smart Energy Meter | Industrial Thermostat |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter with segmented LCD display showing consumption, tariff, and time-of-use data. IC Role / Device Role / Timing Role: Primary system controller executing metering algorithms, managing LCD refresh, logging data to data flash, and maintaining accurate time via RTC. Use Value: Integrated LCD driver and ultra-low-power Halt mode (0.64 µA) enable >10-year battery life while maintaining real-time display and timestamped logs. | Use Scenario: Wall-mounted HVAC controller with 4-digit LCD, push-button interface, and temperature/humidity sensing. IC Role / Device Role / Timing Role: Central MCU handling sensor acquisition (ADC), keypad scan (KR0–KR3), display update (LCD controller), and communication (UART to HVAC unit). Use Value: On-chip key return and 10-bit ADC eliminate external components; 52-pin LQFP provides sufficient I/O for buttons, sensors, and display without PCB layer complexity. |
| Portable Medical Device | Appliance Control Panel |
Use Scenario: Handheld blood glucose monitor or pulse oximeter with LCD readout, button navigation, and battery status indicator. IC Role / Device Role / Timing Role: System-on-chip managing analog front-end (ADC), LCD drive, buzzer output (PCLBUZ0), and low-battery detection (LVD). Use Value: Single-supply 1.6–5.5 V operation allows direct use of 3 V CR2032; LVD with 14 thresholds enables precise battery health monitoring. | Use Scenario: Microwave oven or washing machine control panel with segmented LCD, membrane keypad, and relay/timer control. IC Role / Device Role / Timing Role: Main control MCU driving display, scanning key matrix, timing cooking cycles (timer array), and managing safety interlocks. Use Value: 8-channel 16-bit timer array supports precise PWM for buzzer and motor control; built-in window watchdog ensures fail-safe reset during firmware hangs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RJAGFA#10 | 16 KB flash, same 52-pin LQFP package, identical peripherals and pinout | Requires larger code footprint; suitable when bootloader or OTA updates demand extra flash | Select R5F10RJAGFA#10 if firmware size exceeds 8 KB and pin compatibility must be preserved |
| R5F10RJCGFA#10 | 32 KB flash, same package and peripheral set; differs only in code memory density | Supports complex UI logic, encryption, or extended sensor fusion algorithms | Choose R5F10RJCGFA#10 for future-proofing or when migrating legacy code with minimal hardware change |
Compared with R5F10RJ8GFA#10, the R5F10RJAGFA#10 and R5F10RJCGFA#10 offer scalable flash capacity while retaining identical I/O mapping, LCD capabilities, power profiles, and industrial temperature range-enabling seamless migration within the same PCB layout.
Availability
R5F10RJ8GFA#10 is available at Aetrix Electronics and suitable for smart energy meters, industrial thermostats, portable medical devices, and appliance control panels requiring stable component supply across long product lifecycles.
Supply support for R5F10RJ8GFA#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/L12 product line is engineered for ultra-low-power LCD-based applications, integrating high-efficiency CPU, on-chip LCD driver, and robust analog peripherals to minimize BOM count in cost-sensitive, battery-operated displays.
FAQ
What is the operating temperature range for the R5F10RJ8GFA#10?
The R5F10RJ8GFA#10 is rated for industrial operation from −40°C to +105°C, as indicated by the "G" suffix in the part number. This makes it suitable for deployment in harsh environments such as utility metering enclosures, factory-floor thermostats, and outdoor appliance control panels where ambient temperatures exceed consumer-grade limits.
Does the R5F10RJ8GFA#10 support external crystal oscillators?
Yes, the R5F10RJ8GFA#10 supports external crystal oscillators on X1/P121 and X2/P122 pins for main system clock, and XT1/P123 and XT2/P124 for subsystem clock (e.g., 32.768 kHz RTC crystal). These complement the ±1% accurate 24 MHz on-chip oscillator, offering flexibility between precision timing and BOM reduction.
How many LCD segments and commons can the R5F10RJ8GFA#10 drive?
The R5F10RJ8GFA#10 supports up to 35 segments × 8 commons or 39 segments × 4 commons, as confirmed in the RL78/L12 datasheet. Its LCD controller supports capacitor-split, internal-voltage-boost, and resistance-division drive methods-enabling direct connection to common segment-type LCD modules without external bias generators.
What debug interface does the R5F10RJ8GFA#10 provide?
The R5F10RJ8GFA#10 features a 1-wire on-chip debug interface using TOOL0/P40, supporting full in-circuit debugging, flash programming, and real-time trace without requiring a dedicated debug header or SWD/JTAG adapter-reducing PCB space and test fixture complexity during development and production.
Is the R5F10RJ8GFA#10 qualified for functional safety standards?
Yes, the R5F10RJ8GFA#10 includes hardware-level safety features aligned with IEC 60730 and UL 60730, including flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, and clock frequency monitoring-enabling certification for Class B household appliances and industrial control equipment.
R5F10RJ8GFA#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- RL78/L12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10RJ8GFA#10 FAQ
1.How can I place an order for R5F10RJ8GFA#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RJ8GFA#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 R5F10RJ8GFA#10 reliable?
The price and inventory of R5F10RJ8GFA#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RJ8GFA#10 is usually 5 days.
3.What payment methods are accepted for R5F10RJ8GFA#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RJ8GFA#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RJ8GFA#10?
R5F10RJ8GFA#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RJ8GFA#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 R5F10RJ8GFA#10?
For technical support, including R5F10RJ8GFA#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RJ8GFA#10 requirements.
6.How does Aetrix verify that R5F10RJ8GFA#10 is sourced from the original manufacturer or authorized distributors?
All R5F10RJ8GFA#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 R5F10RJ8GFA#10 meets industry standards.
7.What is the process for return or replacement of R5F10RJ8GFA#10?
All R5F10RJ8GFA#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RJ8GFA#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 R5F10RJ8GFA#10 part is unused and in its original packaging.
Return procedure for R5F10RJ8GFA#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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