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Renesas R5F101JJAFA#V0
- Part No.:
- R5F101JJAFA#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F101JJAFA#V0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,329
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Product details
Overview
R5F101JJAFA#V0 from Renesas is a 52-pin LQFP-0.65mm ultra-low-power 16-bit RL78/G13 MCU with 64 KB flash, 4 KB RAM, no data flash, and operation from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, supports HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), and integrates 10-bit ADC (26 channels), RTC, UART, I²C, SPI, and 16-bit timers - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101JJAFA#V0 datasheet, R5F101JJAFA#V0 pinout, R5F101JJAFA#V0 application, or R5F101JJAFA#V0 equivalent, key selection criteria include its 52-pin LQFP package, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (D), and verified support for LIN-bus UART and background data flash programming in compatible variants.
Technical Context
The R5F101JJAFA#V0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory map spans 1 MB address space, with general-purpose register banks supporting efficient context switching in interrupt-driven real-time control.
Power management includes on-chip POR and 14-level LVD with selectable interrupt/reset behavior, while peripheral integration features 2-channel DMA, 16×16-bit multiplier/accumulator, and simplified CSI (SPI-compatible) with up to 8 channels - all optimized for deterministic low-latency response in embedded control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline and 1 MB address space |
| Max Operating Frequency | 32 MHz delivering 41 DMIPS - enables real-time motor control loop execution within 24.4 μs per iteration |
| Flash Memory | 64 KB code flash (1 KB block size); no data flash - requires external EEPROM or FRAM for nonvolatile parameter storage |
| RAM Size | 4 KB on-chip RAM - sufficient for RTOS kernel, communication buffers, and sensor fusion variables |
| Supply Voltage Range | 1.6 V to 5.5 V - supports direct connection to Li-ion, 3.3 V, or 5 V rails without level-shifting |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA with RTC+LVD active) - extends battery life in wireless sensor nodes |
| Analog Peripherals | 10-bit ADC with 26 input channels and internal 1.45 V reference - enables simultaneous monitoring of voltage, current, and temperature |
Pinout & Package
Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, exposed pad (PLQP0052JA-A), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support separate analog/digital supply filtering; VDD must be ≥1.6 V for full functionality |
| P10/SCK00/SCL00 | Port 10 / SPI clock / I²C clock | Multi-function pin configurable as master clock for SPI or SCL line for I²C slave/master - shared resource requiring software arbitration |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Port 11 / SPI input / UART receive / debug RX / I²C data | High-density multiplexing enables serial debug (TOOLRxD) alongside production interfaces - eliminates need for dedicated debug header |
| P20/ANI0/AVREFP | Analog input 0 / ADC reference positive | Configurable as first ADC channel or AVREFP source - allows ratiometric sensing with external reference or internal 1.45 V reference |
| P21/ANI1/AVREFM | Analog input 1 / ADC reference negative | Paired with P20 to define differential ADC range or serve as AVREFM - critical for precision current-sense amplifier interfacing |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/LVD assertion - synchronous deassertion ensures deterministic startup sequence |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC and LVD active - enables multi-year operation on coin-cell batteries in environmental monitors |
| On-chip high-accuracy oscillator | +/-1.0% accuracy (1.8–5.5 V, -20 to +85°C) - eliminates external crystal for cost-sensitive applications like appliance control panels |
| Background data flash programming | Not applicable - R5F101xx series lacks data flash; this variant relies on code flash reprogramming via bootloader |
| LIN-bus compatible UART | UART channel supports LIN 2.2 physical layer timing - enables direct integration into automotive body electronics networks |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - provides timestamping for data loggers without external RTC IC |
| N-ch open-drain I/O capability | Up to 25 pins support N-ch open drain with VDD or EVDD withstand voltage - simplifies interface to 1.8/2.5/3.3 V peripherals |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure sensor transmitting data via sub-GHz RF every 5 minutes. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, calibration, low-power scheduling, and UART-based RF module command protocol. Use Value: 0.57 μA STOP mode with RTC wake-up ensures >5 years battery life; 10-bit ADC with internal reference eliminates external precision references. |
Use Scenario: Residential HVAC controller managing display, user inputs, relay drivers, and communication with Wi-Fi module. IC Role / Device Role / Timing Role: Central application processor handling UI state machine, PID temperature regulation, and asynchronous serial communication with cloud gateway. Use Value: 64 KB flash accommodates bootloader, application, and field-upgradeable firmware; 26-channel ADC supports multi-zone sensing without external MUX. |
| Energy Meter Front-End | Appliance Motor Control |
Use Scenario: DIN-rail mounted electricity meter measuring voltage/current via shunt or CT, calculating kWh, and reporting via RS-485. IC Role / Device Role / Timing Role: Metrology co-processor acquiring synchronized samples, computing RMS/active power, and managing secure data logging. Use Value: 32 MHz operation enables 16 kSPS sampling across 8 ADC channels; integrated multiplier supports real-time power calculation without external DSP. |
Use Scenario: Brushless DC motor driver in washing machine or HVAC blower, implementing commutation logic and fault protection. IC Role / Device Role / Timing Role: Timing-critical motor control unit generating PWM outputs, reading hall-effect sensors, and responding to overcurrent events within 1 μs. Use Value: 16-bit timers with dead-time insertion and hardware compare match ensure precise 3-phase gate drive; HALT mode reduces idle power during spin cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100JJAFA#V0 | Includes 4 KB data flash; same 64 KB code flash, 4 KB RAM, and 52-pin LQFP package | Supports background data flash writes for runtime parameter storage - required for field-upgradable calibration tables | Select when nonvolatile parameter retention without external memory is mandatory |
| R5F101JGAFA#V0 | Same R5F101xx family, 48-pin LQFP, 64 KB flash, 4 KB RAM, no data flash - reduced I/O count (36 vs. 42 GPIO) | Suitable for space-constrained designs where fewer analog inputs and serial interfaces are needed | Choose for compact PCB layouts where 4 GPIO and 2 ADC channels can be sacrificed for smaller footprint |
Compared with R5F101JJAFA#V0, R5F100JJAFA#V0 adds data flash for robust parameter storage but increases BOM cost, while R5F101JGAFA#V0 trades I/O density for board area savings - both retain identical core performance and low-power behavior.
Availability
R5F101JJAFA#V0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, and energy meter front-ends requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F101JJAFA#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 industrial, automotive, and IoT markets.
The RL78/G13 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - designed to replace legacy 8-bit MCUs while delivering 16-bit performance and advanced peripheral integration.
FAQ
What is the operating temperature range for the R5F101JJAFA#V0?
The R5F101JJAFA#V0 is rated for industrial operation from -40°C to +85°C (D-grade), as confirmed by Renesas datasheet R01DS0131EJ0380 Section 1.1. This specification applies across the full 1.6 V to 5.5 V supply range and validates its use in factory automation controllers and outdoor metering equipment without derating.
Does the R5F101JJAFA#V0 include on-chip data flash memory?
No, the R5F101JJAFA#V0 does not include on-chip data flash memory. As indicated by the "101" prefix in the part number (per Figure 1-1, Page 3 of R01DS0131EJ0380), this variant provides only 64 KB of code flash and 4 KB of RAM. Nonvolatile parameter storage requires external EEPROM or use of code flash sectors managed by a bootloader.
Which package type and pin count does the R5F101JJAFA#V0 use?
The R5F101JJAFA#V0 uses a 52-pin LQFP package with 0.65 mm pitch, identified as PLQP0052JA-A in Renesas documentation (Table 1-1, Page 9 of R01DS0131EJ0380). The "#V0" suffix confirms tray packaging for surface-mount assembly, and the "FA" in the part number denotes the LQFP-0.65mm body variant.
Can the R5F101JJAFA#V0 support LIN bus communication?
Yes, the R5F101JJAFA#V0 supports LIN bus communication through its UART peripheral, which is explicitly documented as LIN-bus compatible in Section 1.1 "Features" of R01DS0131EJ0380. UART channels can be configured for LIN 2.2 physical layer timing, enabling direct integration into automotive body control modules.
What debugging interface is supported by the R5F101JJAFA#V0?
The R5F101JJAFA#V0 supports on-chip debug via the FINE (Flash INterface Emulator) interface using the TOOLRxD/TOOLTxD pins (e.g., P11/P12), as specified in Section 1.1 and the pin configuration diagrams of R01DS0131EJ0380. This enables full-featured debugging including breakpoints, watchpoints, and flash programming without requiring JTAG hardware.
R5F101JJAFA#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- RL78/G13
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- -
- 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:
R5F101JJAFA#V0 FAQ
1.How can I place an order for R5F101JJAFA#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101JJAFA#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 R5F101JJAFA#V0 reliable?
The price and inventory of R5F101JJAFA#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101JJAFA#V0 is usually 5 days.
3.What payment methods are accepted for R5F101JJAFA#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101JJAFA#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101JJAFA#V0?
R5F101JJAFA#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101JJAFA#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 R5F101JJAFA#V0?
For technical support, including R5F101JJAFA#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101JJAFA#V0 requirements.
6.How does Aetrix verify that R5F101JJAFA#V0 is sourced from the original manufacturer or authorized distributors?
All R5F101JJAFA#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 R5F101JJAFA#V0 meets industry standards.
7.What is the process for return or replacement of R5F101JJAFA#V0?
All R5F101JJAFA#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101JJAFA#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 R5F101JJAFA#V0 part is unused and in its original packaging.
Return procedure for R5F101JJAFA#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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