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Renesas R5F10RG8AFB#V0
- Part No.:
- R5F10RG8AFB#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F10RG8AFB#V0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,284
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Product details
Overview
R5F10RG8AFB#V0 from Renesas is an 8 KB flash, 1.5 KB RAM, 48-pin LFQFP microcontroller in the RL78/L12 family, featuring integrated LCD controller/driver (up to 35 seg × 8 com), 10-bit ADC (10 channels), real-time clock with calendar, and ultra-low-power operation (0.64 µA in RTC+LVD halt mode). It targets battery-powered LCD display systems such as smart meters, thermostats, and portable medical devices.
For engineers reviewing the R5F10RG8AFB#V0 datasheet, R5F10RG8AFB#V0 pinout, R5F10RG8AFB#V0 application, or R5F10RG8AFB#V0 equivalent, this page delivers verified technical context, package-specific pin roles, low-power design implications, LCD drive configuration options, and validated alternative MCUs for cost, memory, or temperature-grade trade-offs.
Technical Context
The R5F10RG8AFB#V0 implements the 16-bit RL78 CPU core delivering 31 DMIPS at 24 MHz, with Harvard architecture, 3-stage pipeline, and single-cycle 16×16 multiply. Its on-chip voltage regulator supports 1.6 V to 5.5 V operation, enabling direct battery interface without external LDOs.
It integrates a dedicated LCD controller supporting capacitor split, internal boost, and resistance division methods - configurable for up to 35 segments and 8 commons - alongside dual CSI interfaces (SPI-compatible), one I²C, one UART, and 8-channel timer array with RTC and interval timer. Safety features include RAM parity, flash CRC, and illegal access detection per IEC/UL 60730.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 16-bit RL78 CPU, 31 DMIPS @ 24 MHz, 86% instructions execute 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 Support | Up to 35 seg × 8 com; supports waveform A/B, 16-step contrast, blinking, and 3 drive methods |
| Analog | 10-bit ADC with 10 channels, 2.1 µs conversion, internal 1.45 V reference, and on-chip temp sensor |
| Peripherals | 1× I²C, 2× CSI (SPI-compatible), 1× UART, 8× 16-bit timers, RTC with calendar/alarm, 2× DMA |
| Operating Temp | −40 °C to +85 °C (Consumer grade, 'A' suffix) |
Pinout & Package
Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, tray packaging (#V0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P121 / X1 | Main system crystal input | Connects to 1–20 MHz crystal for precise timing; required for high-accuracy RTC or communication clocks |
| P122 / X2 / EXCLK | Main system crystal output / external clock input | Drives crystal; accepts external clock if bypassing crystal oscillator |
| P123 / XT1 | Subsystem crystal input (32.768 kHz) | Provides low-power RTC timebase independent of main clock domain |
| P126 / CAPL, P127 / CAPH | LCD capacitor terminals | Connect external capacitors for capacitor-split LCD drive method; enables low-current segment bias |
| VL1–VL4 | LCD power supply outputs | Four programmable LCD voltage levels generated internally; support adjustable contrast and drive strength |
| COM0–COM7 | LCD common outputs | Drive up to 8 commons; used with SEG0–SEG35 for multiplexed LCD panel control |
| SEG0–SEG35 | LCD segment outputs | 36 dedicated segment drivers; mapped to pins P14–P17, P30–P32, P40–P41, P50, P70–P71, P120, P125, P140–P144 |
| REGC | Voltage regulator decoupling | Must connect 0.47–1 µF capacitor to VSS to stabilize internal 1.25 V regulator for LCD and analog circuits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power RTC + LVD halt mode | 0.64 µA enables multi-year battery life in always-on LCD applications like utility meters |
| Integrated LCD controller with 3 drive methods | Eliminates external LCD driver IC; supports capacitor-split for <0.12 µA segment current |
| On-chip debug via TOOL0/P40 | Enables full SWD-style debugging without external JTAG adapter - reduces BOM and layout complexity |
| Self-programmable flash with shield window | Allows field firmware updates and secure parameter storage without external programmer |
| IEC/UL 60730 safety features | Includes flash CRC, RAM parity, SFR write protection, and clock frequency monitor for certified appliances |
| 5 V-tolerant GPIO with 20 mA sink/source | Direct interface to legacy sensors, LEDs, and switches without level shifters or external drivers |
Applications
| Smart Energy Meter | Programmable Thermostat |
|---|---|
|
Use Scenario: Battery-powered residential electricity meter with segmented LCD display, tamper detection, and hourly energy logging. IC Role / Device Role / Timing Role: Primary system MCU managing LCD refresh, metrology ADC sampling, RTC-based timestamping, and secure flash logging. Use Value: 0.64 µA halt current extends CR2032 battery life beyond 10 years; integrated LCD driver eliminates 3 external components. |
Use Scenario: HVAC control unit with 4-line LCD, push-button interface, ambient temperature/humidity sensing, and relay actuation. IC Role / Device Role / Timing Role: Central controller handling key scan (KR0–KR3), LCD update, sensor reads (ADC), and real-time scheduling via RTC calendar. Use Value: On-chip 10-bit ADC and 16-step LCD contrast enable precise sensor resolution and display readability across lighting conditions. |
| Portable Medical Monitor | Industrial Panel Display |
|
Use Scenario: Handheld pulse oximeter with OLED/LCD hybrid display, optical sensor interface, and low-battery alert. IC Role / Device Role / Timing Role: System-on-chip managing optical ADC acquisition, LCD segment driving, buzzer feedback (PCLBUZ0/1), and low-power sleep/wake cycles. Use Value: Snooze mode + 62.5 µA/MHz active current allows responsive UI while preserving battery; internal voltage boost enables LCD operation down to 1.6 V. |
Use Scenario: DIN-rail mounted HMI for factory equipment, displaying status, alarms, and setpoints using custom LCD glass. IC Role / Device Role / Timing Role: Dedicated display controller interfacing to 32-segment × 4-common LCD, reading encoder inputs, and communicating via UART to PLC. Use Value: 35-seg × 8-com LCD capability supports complex character sets; 5 V-tolerant I/O simplifies connection to industrial-level sensors and indicators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RGAAGB#V0 | 16 KB flash, same 48-pin LFQFP package, identical peripherals and low-power specs | Supports larger firmware (e.g., BLE stack integration or advanced UI logic) without PCB change | Select when future firmware expansion or OTA updates require >8 KB code space |
| R5F10RG8GFB#V0 | Same 8 KB flash, but rated for −40 °C to +105 °C (industrial 'G' grade) | Required for under-hood automotive or high-temp industrial enclosures where ambient exceeds 85 °C | Select when operating temperature range must extend beyond consumer-grade limits |
Compared with R5F10RG8AFB#V0, the R5F10RGAAGB#V0 provides double flash capacity for feature-rich firmware, while the R5F10RG8GFB#V0 maintains identical functionality with extended thermal reliability - both retain pin compatibility and LCD/peripheral feature parity.
Availability
R5F10RG8AFB#V0 is available at Aetrix Electronics and suitable for smart metering, programmable thermostats, and portable medical devices requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for R5F10RG8AFB#V0 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 engineered for ultra-low-power LCD-based applications - integrating display control, precision timing, and robust safety features into a single chip for cost-sensitive, battery-operated end equipment.
FAQ
What is the maximum LCD segment count supported by the R5F10RG8AFB#V0?
The R5F10RG8AFB#V0 supports up to 35 segments and 8 commons (35 × 8 com) using the capacitor split method, or 39 segments and 4 commons (39 × 4 com) with internal voltage boost. Pin mapping confirms SEG0–SEG35 and COM0–COM7 are fully implemented in the 48-pin LFQFP package.
Does the R5F10RG8AFB#V0 support in-system programming via its serial interfaces?
Yes, the R5F10RG8AFB#V0 supports self-programming of code flash and data flash using the on-chip debug interface (TOOL0/P40) or via UART bootloader - no external programmer is required. The flash shield window function enables secure firmware updates without exposing protected memory regions.
What is the operating voltage range and minimum supply requirement for RTC operation in the R5F10RG8AFB#V0?
The R5F10RG8AFB#V0 operates from 1.6 V to 5.5 V. For RTC operation in halt mode with LVD enabled, the minimum functional supply is 1.6 V - verified by datasheet specification of 0.64 µA current at VDD = 1.6 V to 5.5 V during RTC+LVD halt.
How many ADC channels does the R5F10RG8AFB#V0 provide, and what is their resolution and conversion speed?
The R5F10RG8AFB#V0 includes a 10-bit successive approximation ADC with up to 10 input channels (ANI0–ANI23, mapped per package), 2.1 µs conversion time, and support for 1.6 V minimum supply. It features internal 1.45 V reference and on-chip temperature sensor channel.
Is the R5F10RG8AFB#V0 pin-compatible with other RL78/L12 variants in the same 48-pin LFQFP package?
Yes, all RL78/L12 48-pin LFQFP variants - including R5F10RG8AFB#V0, R5F10RGAAGB#V0, and R5F10RGCAFB#V0 - share identical pinouts, electrical characteristics, and peripheral mappings. Memory size and temperature grade differ, but PCB layout remains unchanged across the RGx 48-pin family.
R5F10RG8AFB#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RL78/L12
- Packaging:
- Tray
- 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:
- 33
- 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 9x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10RG8AFB#V0 FAQ
1.How can I place an order for R5F10RG8AFB#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RG8AFB#V0 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 R5F10RG8AFB#V0 reliable?
The price and inventory of R5F10RG8AFB#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RG8AFB#V0 is usually 5 days.
3.What payment methods are accepted for R5F10RG8AFB#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RG8AFB#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RG8AFB#V0?
R5F10RG8AFB#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RG8AFB#V0 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 R5F10RG8AFB#V0?
For technical support, including R5F10RG8AFB#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RG8AFB#V0 requirements.
6.How does Aetrix verify that R5F10RG8AFB#V0 is sourced from the original manufacturer or authorized distributors?
All R5F10RG8AFB#V0 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 R5F10RG8AFB#V0 meets industry standards.
7.What is the process for return or replacement of R5F10RG8AFB#V0?
All R5F10RG8AFB#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RG8AFB#V0, 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 R5F10RG8AFB#V0 part is unused and in its original packaging.
Return procedure for R5F10RG8AFB#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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