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Renesas R5F10RJ8AFA#V0
- Part No.:
- R5F10RJ8AFA#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F10RJ8AFA#V0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,290
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Product details
Overview
R5F10RJ8AFA#V0 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 (up to 35 seg × 8 com), 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 R5F10RJ8AFA#V0 datasheet, R5F10RJ8AFA#V0 pinout, R5F10RJ8AFA#V0 application, or R5F10RJ8AFA#V0 equivalent, key selection criteria include its 8 KB code flash size, 52-pin LQFP-0.65 mm package, LCD drive capability with capacitor split/internal boost methods, 1.6–5.5 V supply range, and IEC/UL 60730 safety features for certified embedded control.
Technical Context
The R5F10RJ8AFA#V0 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. Its on-chip high-speed oscillator achieves ±1% accuracy across 1.8–5.5 V and −20°C to +85°C.
It integrates a full-featured LCD controller supporting waveform types A/B, 16-step contrast adjustment, blinking, and three drive methods - capacitor split (0.12 µA), internal voltage boost (0.63 µA at VDD = 3.0 V), and resistance division - alongside dedicated VL1–VL4 and CAPL/CAPH pins for bias generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 16-bit RL78 CPU, 31 DMIPS @ 24 MHz, CISC Harvard with 3-stage pipeline |
| Flash / RAM | 8 KB code flash, 2 KB data flash, 1.5 KB RAM (630 bytes usable with self-programming enabled) |
| Power Modes | Halt (RTC + LVD): 0.64 µA; Stop (RAM retained): 0.23 µA; Active: 62.5 µA/MHz |
| LCD Support | Up to 35 segments × 8 commons; supports capacitor split, internal boost, and resistance division methods |
| Analog Peripherals | 10-channel 10-bit ADC (2.1 µs conversion), internal 1.45 V reference, on-chip temperature sensor |
| Safety Features | Flash CRC, RAM parity check, SFR write protection, illegal memory access detection, clock frequency monitor |
| Operating Range | −40°C to +85°C (Consumer grade), 1.6 V to 5.5 V supply voltage |
Pinout & Package
Package: 52-pin LQFP (10 × 10 mm, 0.65 mm pitch), RoHS-compliant, tray packaging (#V0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P12/SO00/TxD0/TOOLTxD/SEG30 | Serial output / UART TX / LCD segment | Multi-function pin supporting serial communication, debug interface, and LCD segment drive |
| P11/SI00/RxD0/TOOLRxD/SEG29 | Serial input / UART RX / LCD segment | Enables full-duplex UART with on-chip debug and LCD segment output |
| P10/SCK00/TI07/TO07/SEG28 | SPI clock / timer I/O / LCD segment | Supports CSI00 interface timing and LCD segment output simultaneously |
| P140/TO00/PCLBUZ0/SEG27 | Timer output / buzzer / LCD segment | Combines programmable clock/buzzer generation with LCD segment drive |
| COM0–COM3 | LCD common outputs | Dedicated outputs for 4-common LCD configuration (expandable to 8 commons via software reconfiguration) |
| VL1–VL4, CAPL, CAPH | LCD bias voltage terminals | Enable capacitor-split method for ultra-low-power LCD operation (0.12 µA) |
| 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 LCD operation | 0.12 µA segment current using capacitor-split method enables multi-year battery life in portable displays |
| Integrated safety compliance | Hardware-level CRC, RAM parity, and illegal access detection meet IEC/UL 60730 Class B requirements out-of-box |
| Flexible clock system | On-chip 24 MHz oscillator (±1%) eliminates external crystal cost while supporting snooze mode for rapid wake-up |
| Configurable LCD drive | Software-selectable waveform type (A/B), contrast (16 steps), and blink control simplify UI development |
| Robust analog subsystem | 10-bit ADC operates down to 1.6 V supply with internal reference, enabling direct battery monitoring without external components |
Applications
| Smart Energy Metering | Programmable Thermostat |
|---|---|
Use Scenario: Battery-backed utility meter with segmented LCD showing kWh, tariff, and time-of-use data. IC Role / Device Role / Timing Role: Primary system controller executing metering firmware, managing real-time calendar via RTC, and driving 4×35-segment LCD display. Use Value: 0.64 µA Halt-mode current extends 10-year battery life; integrated LVD and CRC ensure safe, certified operation per IEC 62056. | Use Scenario: HVAC control panel with LCD UI, temperature sensing, and relay actuation. IC Role / Device Role / Timing Role: Central MCU handling sensor ADC reads, PID loop execution, LCD refresh, and 1 Hz RTC-based scheduling. Use Value: On-chip 10-bit ADC (1.6 V min) directly interfaces NTC thermistors; 52-pin package accommodates GPIO for relays, buttons, and COM/SEG lines. |
| Portable Medical Monitor | Industrial Panel Display |
Use Scenario: Handheld pulse oximeter or blood glucose meter with low-power LCD and button interface. IC Role / Device Role / Timing Role: System-on-chip managing optical sensor interface, LCD rendering, key return scanning (KR0–KR3), and low-voltage shutdown. Use Value: KR inputs support matrix keypad without external logic; 1.6 V operation allows use with single-cell Li-ion or alkaline batteries. | Use Scenario: Factory floor HMI displaying machine status, alarms, and settings via segmented LCD. IC Role / Device Role / Timing Role: Dedicated display controller interfacing with host MCU via UART/I²C, refreshing LCD and managing contrast/brightness. Use Value: Dual communication interfaces (UART + I²C) enable flexible host connectivity; 35×8 segment support drives large-format industrial displays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10RJAAFA#V0 | 16 KB flash, same 52-pin LQFP-0.65 mm package, identical peripheral set and pinout | Required where firmware exceeds 8 KB or future-proofing for feature expansion is needed | Select when additional code space is required without PCB layout change |
| R5F10RJCAFA#V0 | 32 KB flash, same package and peripherals; differs only in flash density and ordering suffix | Suitable for complex UIs, OTA update partitions, or dual-application firmware images | Choose for maximum headroom in code size-critical designs with same footprint |
Compared with R5F10RJ8AFA#V0, the R5F10RJAAFA#V0 and R5F10RJCAFA#V0 offer scalable flash capacity (16 KB/32 KB) while preserving identical pinout, LCD capabilities, power profile, and safety features - enabling seamless migration within the same PCB design.
Availability
R5F10RJ8AFA#V0 is available at Aetrix Electronics and suitable for smart metering, HVAC controls, portable medical devices, and industrial HMIs requiring stable component supply and long-term lifecycle support.
Supply support for R5F10RJ8AFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/L12 product line is designed specifically for ultra-low-power LCD-based applications, integrating optimized display drivers, precision analog, and safety-certified peripherals in compact packages.
FAQ
What is the maximum operating frequency and performance of the R5F10RJ8AFA#V0?
The R5F10RJ8AFA#V0 operates at up to 24 MHz using its on-chip high-speed oscillator, delivering 31 DMIPS of processing performance. Its 16-bit RL78 core executes 86% of instructions in just 1–2 clock cycles, enabling responsive real-time control in LCD-based systems while maintaining ultra-low active current (62.5 µA/MHz).
Does the R5F10RJ8AFA#V0 support IEC 60730 or UL 60730 certification?
Yes, the R5F10RJ8AFA#V0 includes hardware safety features required for Class B compliance under IEC/UL 60730, including flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, and clock frequency monitoring - all implemented in silicon without software overhead.
How many LCD segments and commons does the R5F10RJ8AFA#V0 support?
The R5F10RJ8AFA#V0 supports up to 35 segments × 8 commons or 39 segments × 4 commons via its integrated LCD controller/driver. It provides dedicated VL1–VL4 and CAPL/CAPH pins and supports capacitor split, internal voltage boost, and resistance division drive methods - confirmed in the R01DS0157EJ0223 datasheet Section 1.1.
What are the power supply requirements for the R5F10RJ8AFA#V0?
The R5F10RJ8AFA#V0 operates from a single supply of 1.6 V to 5.5 V across −40°C to +85°C. Its ultra-low-power modes include Halt (0.64 µA with RTC + LVD enabled), Stop (0.23 µA with RAM retention), and active operation at 62.5 µA/MHz - making it ideal for battery-powered LCD applications.
Is the R5F10RJ8AFA#V0 pin-compatible with other RL78/L12 variants in the 52-pin family?
Yes, the R5F10RJ8AFA#V0 shares identical pinout and package (52-pin LQFP, 0.65 mm pitch) with R5F10RJAAFA#V0 and R5F10RJCAFA#V0. All three variants maintain full electrical and functional compatibility across GPIO, peripherals, and LCD driver pins - enabling drop-in flash capacity upgrades without PCB revision.
R5F10RJ8AFA#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-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:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10RJ8AFA#V0 FAQ
1.How can I place an order for R5F10RJ8AFA#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10RJ8AFA#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 R5F10RJ8AFA#V0 reliable?
The price and inventory of R5F10RJ8AFA#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10RJ8AFA#V0 is usually 5 days.
3.What payment methods are accepted for R5F10RJ8AFA#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10RJ8AFA#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10RJ8AFA#V0?
R5F10RJ8AFA#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10RJ8AFA#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 R5F10RJ8AFA#V0?
For technical support, including R5F10RJ8AFA#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10RJ8AFA#V0 requirements.
6.How does Aetrix verify that R5F10RJ8AFA#V0 is sourced from the original manufacturer or authorized distributors?
All R5F10RJ8AFA#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 R5F10RJ8AFA#V0 meets industry standards.
7.What is the process for return or replacement of R5F10RJ8AFA#V0?
All R5F10RJ8AFA#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10RJ8AFA#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 R5F10RJ8AFA#V0 part is unused and in its original packaging.
Return procedure for R5F10RJ8AFA#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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