Renesas R5F100JJAFA#30
- Part No.:
- R5F100JJAFA#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F100JJAFA#30.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 52LQFP
- Quantity:
- Payment:

- Shipping:

Inventory:655
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Product details
Overview
R5F100JJAFA#30 from Renesas is a 52-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 256 KB flash, 8 KB data flash, 20 KB RAM, 16-bit RL78 CPU core, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode) for battery-powered industrial control and sensor nodes.
For engineers reviewing the R5F100JJAFA#30 datasheet, R5F100JJAFA#30 pinout, R5F100JJAFA#30 application, or R5F100JJAFA#30 equivalent, key selection criteria include its 52-pin LQFP package with 39 general-purpose I/Os, integrated 10-bit 26-channel ADC, real-time clock with calendar/alarm, and support for LIN-bus UART communication in industrial temperature grade (−40°C to +85°C).
Technical Context
The R5F100JJAFA#30 implements the RL78 CISC CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz HS mode) to 30.5 μs (32.768 kHz subsystem clock), and includes on-chip debug, self-programming flash with boot swap, and background operation during data flash rewriting.
It integrates dual DMA controllers (4 channels), 16-bit timer array (12 channels), 12-bit interval timer, watchdog timer, and multiple serial interfaces including CSI (SPI-compatible), UART/LIN (2–4 channels), and I²C (3–10 channels), all operating across 1.6–5.5 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 41 DMIPS @ 32 MHz |
| Flash Memory | 256 KB code flash (1 KB block size) with security erase lock and on-chip debug |
| Data Flash | 8 KB with background operation (BGO), 1M rewrite cycles, 1.8–5.5 V programming |
| RAM | 20 KB on-chip SRAM, including dedicated areas for flash library use (start address FAF00H) |
| ADC | 10-bit resolution, 26 analog input channels, internal 1.45 V reference and temperature sensor |
| Operating Voltage | 1.6 V to 5.5 V single supply, enabling direct interface with 1.8/2.5/3.0 V peripherals |
| Temperature Range | −40°C to +85°C (Industrial grade D-application), qualified per AEC-Q100 not claimed |
Pinout & Package
Package: 52-pin LQFP (10 × 10 mm, 0.65-mm pitch), JEDEC standard PLQP0052JA-A footprint, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Port 10 / SPI Clock / I²C Clock | Multi-function pin supporting master/slave SPI clock or I²C bus clock; enables shared peripheral routing |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Port 11 / SPI Input / UART RX / Debug RX / I²C Data | High-density I/O consolidation for serial debug, LIN/UART, and I²C slave operation without external logic |
| P12/SO00/TxD0/TOOLTxD/SDA00 | Port 12 / SPI Output / UART TX / Debug TX / I²C Data | Shared UART transmit, SPI output, and I²C bidirectional data line reduces pin count for multi-protocol designs |
| P13/INTP0/TOOLCLK | Port 13 / External Interrupt 0 / Debug Clock | Dedicated interrupt input with configurable edge sensitivity; also serves as JTAG/SWD clock input for in-circuit debugging |
| P14/INTP1/RTCOUT | Port 14 / External Interrupt 1 / RTC Output | Provides programmable RTC alarm pulse output (1 Hz, 64 Hz, etc.) while retaining interrupt capability for wake-up events |
| P20/ANI0/AVREFP | Port 20 / Analog Input 0 / ADC Reference Positive | Configurable as first ADC channel or positive reference voltage source - enables ratiometric sensing with external sensors |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | Enables sub-μA system sleep states with fast wake-up (< 4 μs from STOP), critical for energy harvesting and battery life extension |
| On-chip high-accuracy oscillator | ±1.0% tolerance over −20°C to +85°C at 32 MHz eliminates need for external crystal in cost-sensitive applications |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction functions allow time-stamped logging and scheduled operations without host processor overhead |
| LIN-bus compatible UART | Hardware LIN protocol support (break detection, sync field, checksum) simplifies automotive body electronics integration |
| Self-programmable flash with boot swap | Enables safe firmware updates in field-deployed devices by validating new code in secondary bank before activation |
Applications
| Smart Sensor Node | Industrial HMI Panel |
|---|---|
|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and CO₂ via analog and digital interfaces. IC Role / Device Role / Timing Role: Main controller executing sensor fusion, local decision logic, and low-power wireless transmission scheduling. Use Value: 0.57 μA RTC+LVD mode extends 2xAA battery life beyond 5 years; 26-channel ADC supports multi-sensor analog front-end without external mux. |
Use Scenario: Local operator interface for PLC-controlled HVAC systems with touch buttons, LED indicators, and status display. IC Role / Device Role / Timing Role: Real-time I/O manager handling button debouncing, LED PWM dimming, and RS-485/LIN communication to main controller. Use Value: 39 GPIOs with N-ch open-drain drive simplify direct LED/relay control; LIN UART ensures interoperability with legacy building automation networks. |
| Energy Metering Subsystem | Appliance Motor Control |
|
Use Scenario: Secondary microcontroller in smart meter performing tamper detection, secure data logging, and metrology co-processing. IC Role / Device Role / Timing Role: Secure data handler managing encrypted flash writes, RTC-timestamped event logs, and voltage sag monitoring via LVD. Use Value: 8 KB data flash with 1M write endurance stores >10 years of tamper logs; LVD interrupt at 14 selectable thresholds enables precise brown-out response. |
Use Scenario: Embedded motor supervisor in washing machine controlling brushless DC motor commutation timing and fault protection. IC Role / Device Role / Timing Role: Timing-critical peripheral coordinator managing PWM generation, current sensing ADC sampling, and thermal shutdown signals. Use Value: 12-channel 16-bit timer array synchronizes 3-phase gate drivers; 10-bit ADC samples motor current at ≤1 μs conversion time for closed-loop control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100JGAFA#30 | Same 52-pin LQFP package, 192 KB flash, 8 KB data flash, 16 KB RAM | Suitable where firmware size < 192 KB and memory headroom is less critical | Select when BOM cost optimization is prioritized and full 256 KB flash capacity is unused |
| R5F100JKAFA#30 | Same 52-pin LQFP package, 384 KB flash, 8 KB data flash, 24 KB RAM | Required for complex protocol stacks (e.g., Modbus TCP + OTA update + diagnostics) | Choose when future firmware expansion, dual-bank secure boot, or larger RTOS footprint is needed |
Compared with R5F100JGAFA#30 and R5F100JKAFA#30, the R5F100JJAFA#30 delivers optimal balance of flash density (256 KB), RAM (20 KB), and power efficiency for mid-tier industrial firmware-avoiding under-provisioning while maintaining lower unit cost than the 384 KB variant.
Availability
R5F100JJAFA#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, and appliance motor supervisors requiring stable component supply across extended production lifecycles.
Supply support for R5F100JJAFA#30 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/G13 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications-designed to replace legacy 8/16-bit MCUs with enhanced integration, security, and energy efficiency.
FAQ
What is the maximum operating frequency and corresponding power consumption of the R5F100JJAFA#30?
The R5F100JJAFA#30 operates up to 32 MHz using its high-speed on-chip oscillator. At this frequency, active current consumption is 66 μA per MHz (2.112 mA typical at 32 MHz). In STOP mode with only RTC and LVD active, it draws just 0.57 μA - verified per R01DS0131EJ0380 datasheet Section 1.1.
Does the R5F100JJAFA#30 support hardware LIN bus communication?
Yes, the R5F100JJAFA#30 supports LIN bus via its UART peripheral with dedicated LIN-mode features: automatic break detection, sync field generation, and checksum calculation. This is implemented in hardware without CPU intervention, as confirmed in Section 1.1 "Serial interface" of the RL78/G13 datasheet.
What is the flash memory organization and security capability of the R5F100JJAFA#30?
The R5F100JJAFA#30 contains 256 KB of code flash organized in 1 KB blocks. It supports flash security features including block erase prohibition and flash shield window function to prevent unauthorized read/write access - detailed in Section 1.1 "Code flash memory" of the official datasheet.
Can the R5F100JJAFA#30 operate from a 1.8 V supply, and what peripherals remain functional?
Yes, the R5F100JJAFA#30 supports 1.6–5.5 V operation. At 1.8 V, all core functions remain active including CPU, RAM, flash, ADC (with internal 1.45 V reference), timers, and serial interfaces. I/O ports support different-potential interfacing down to 1.8 V, as specified in Section 1.1 "I/O port".
Is there a pin-compatible upgrade path from the R5F100JJAFA#30 to higher memory variants?
Yes - R5F100JKAFA#30 (384 KB flash, 24 KB RAM) and R5F100JLAFA#30 (512 KB flash, 32 KB RAM) share identical 52-pin LQFP-0.65mm packaging and pinout with the R5F100JJAFA#30. No PCB redesign is required for migration, as confirmed in Table 1-1 of R01DS0131EJ0380.
R5F100JJAFA#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- RL78/G13
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F100JJAFA#30 FAQ
1.How can I place an order for R5F100JJAFA#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F100JJAFA#30 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 R5F100JJAFA#30 reliable?
The price and inventory of R5F100JJAFA#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100JJAFA#30 is usually 5 days.
3.What payment methods are accepted for R5F100JJAFA#30?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F100JJAFA#30?
R5F100JJAFA#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F100JJAFA#30 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 R5F100JJAFA#30?
For technical support, including R5F100JJAFA#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100JJAFA#30 requirements.
6.How does Aetrix verify that R5F100JJAFA#30 is sourced from the original manufacturer or authorized distributors?
All R5F100JJAFA#30 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 R5F100JJAFA#30 meets industry standards.
7.What is the process for return or replacement of R5F100JJAFA#30?
All R5F100JJAFA#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100JJAFA#30, 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 R5F100JJAFA#30 part is unused and in its original packaging.
Return procedure for R5F100JJAFA#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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