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Renesas R5F101LJAFA#V0
- Part No.:
- R5F101LJAFA#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LJAFA#V0.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,874
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Product details
Overview
R5F101LJAFA#V0 from Renesas is an RL78/G13 16-bit microcontroller with 128 KB flash memory, 12 KB RAM, and no data flash, housed in a 64-pin LQFP (0.65 mm pitch) package. It operates from 1.6–5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes including STOP (0.57 μA) and HALT, targeting battery-powered industrial sensors and smart metering interfaces.
For engineers reviewing the R5F101LJAFA#V0 datasheet, R5F101LJAFA#V0 pinout, R5F101LJAFA#V0 application, or R5F101LJAFA#V0 equivalent, key selection criteria include its 64-pin LQFP-0.65mm footprint, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (D), and integrated RTC, 10-bit ADC (26 channels), and multiple serial interfaces (UART, I²C, CSI).
Technical Context
The R5F101LJAFA#V0 implements the RL78 CPU core with a 3-stage pipeline, supporting 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, with dedicated SFR space and banked 8-bit general-purpose registers.
Power management includes an on-chip POR circuit, selectable 14-level LVD for reset/interrupt, and three low-power modes (HALT, STOP, SNOOZE). Peripheral integration features a 16-bit timer array (12 channels), real-time clock with calendar/alarm, and background operation-capable peripherals such as UART and I²C.
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 - delivers 41 DMIPS for deterministic real-time control |
| Flash Memory | 128 KB code flash - supports block erase (1 KB), self-programming, and boot swap |
| RAM Size | 12 KB on-chip RAM - sufficient for RTOS stacks and protocol buffers in edge nodes |
| ADC Resolution & Channels | 10-bit SAR ADC with up to 26 input channels - enables multi-sensor analog acquisition |
| Operating Voltage Range | 1.6 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V, and 5 V systems |
| Low-Power STOP Current | 0.57 μA (RTC + LVD active) - extends battery life in always-on monitoring applications |
Pinout & Package
Package: 64-pin LQFP, 12 × 12 mm, 0.65 mm pitch (JEDEC MS-026), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial Clock Input/Output | Shared SPI clock (CSI00) or I²C clock - configurable per peripheral mode |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial Data Input / UART RX / I²C Data | Multi-function pin supporting SPI input, UART receive, debug interface, and I²C bidirectional data |
| P12/SO00/TxD0/TOOLTxD | Serial Data Output / UART TX / Debug TX | Enables full-duplex UART communication and on-chip debugging without external adapters |
| P13/INTP0/TOOLCLK | External Interrupt Input / Debug Clock | Supports wake-up from STOP mode via external event and synchronizes debug sessions |
| P20/ANI0/AVREFP | Analog Input Channel 0 / ADC Reference Positive | Dual-role pin allows flexible reference sourcing or direct sensor connection to ADC0 |
| P21/ANI1/AVREFM | Analog Input Channel 1 / ADC Reference Negative | Enables differential ADC measurements or ground-referenced single-ended sensing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC and LVD active - enables >10-year battery life in periodic wake-up sensor nodes |
| On-chip high-accuracy oscillator | +/-1.0% tolerance (1.8–5.5 V, -20 to +85°C) - eliminates external crystal for cost-sensitive designs |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - supports time-stamped logging without host MCU intervention |
| Background data flash rewrite | Not applicable - R5F101LJAFA#V0 has no data flash; only code flash self-programming supported |
| Multi-protocol serial interfaces | Up to 4 UART, 10 I²C, and 8 CSI channels - simplifies connectivity to displays, sensors, and legacy peripherals |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Standalone electricity/water/gas meter with pulse counting, tamper detection, and local display. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, managing LCD driver, and maintaining accurate time via integrated RTC. Use Value: 128 KB flash stores firmware + tariff tables; 12 KB RAM accommodates encryption keys and buffer history; STOP-mode current ensures >15-year battery backup. |
Use Scenario: Wireless node measuring temperature, humidity, and vibration in factory equipment. IC Role / Device Role / Timing Role: Signal acquisition hub interfacing 10-bit ADC, conditioning analog inputs, and formatting data for BLE/Wi-Fi transmission. Use Value: 26-channel ADC supports multi-sensor inputs; UART/I²C enable direct connection to environmental ICs; low-power modes extend field deployment interval. |
| Home Appliance Control | Building Automation Panel |
|
Use Scenario: Washing machine main board managing motor drive, water valves, user interface, and safety interlocks. IC Role / Device Role / Timing Role: Real-time coordinator handling PWM generation, keypad scanning, buzzer output, and fault monitoring. Use Value: 12-channel 16-bit timers support precise motor phase control; N-ch open-drain I/O drives relays directly; wide voltage range tolerates brown-out conditions. |
Use Scenario: HVAC control panel with touch interface, fan speed regulation, and zone temperature feedback. IC Role / Device Role / Timing Role: Central logic unit processing button inputs, driving segmented LCD, and communicating with remote thermostats over UART/LIN. Use Value: Integrated LIN-capable UART reduces BOM count; on-chip key interrupt minimizes polling overhead; 64-pin LQFP provides ample I/O for expansion headers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101LCAFA#V0 | Same package and core, but 96 KB flash and 8 KB RAM; no data flash | Suitable for simpler control tasks with smaller firmware footprints | Select when firmware size < 96 KB and RAM usage ≤ 8 KB to reduce cost |
| R5F100LJAFA#V0 | Same 128 KB flash, 12 KB RAM, and 64-pin LQFP, but includes 8 KB data flash | Required where field-upgradable parameter storage or EEPROM emulation is needed | Choose only if non-volatile parameter retention beyond code flash is mandatory |
Compared with R5F101LJAFA#V0, R5F101LCAFA#V0 offers lower memory capacity for cost-sensitive volume production, while R5F100LJAFA#V0 adds data flash for configuration persistence-neither is pin-compatible due to differing memory mapping and reset vector behavior.
Availability
R5F101LJAFA#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across extended product lifecycles.
Supply support for R5F101LJAFA#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/G13 family targets cost- and power-sensitive general-purpose embedded applications, emphasizing ultra-low active and standby current, integrated peripherals, and rapid development with scalable toolchains.
FAQ
What is the operating temperature range for R5F101LJAFA#V0?
The R5F101LJAFA#V0 is rated for industrial operation from -40°C to +85°C (D-grade), validated per Renesas specification R01DS0131EJ0380. This range supports deployment in factory-floor controllers, outdoor utility meters, and HVAC systems without derating.
Does R5F101LJAFA#V0 include on-chip data flash memory?
No, R5F101LJAFA#V0 does not include data flash memory. Per the RL78/G13 part numbering convention, the "101" prefix indicates no data flash; only 128 KB code flash is present. For data flash capability, consider R5F100LJAFA#V0 (8 KB data flash).
Which serial interfaces are supported by R5F101LJAFA#V0?
R5F101LJAFA#V0 supports up to 4 UART channels (with LIN-bus support), up to 10 I²C/Simplified I²C channels, and up to 8 CSI (SPI-compatible) channels. All are configurable via register settings and share pins with GPIO functions.
What is the maximum ADC resolution and channel count on R5F101LJAFA#V0?
R5F101LJAFA#V0 integrates a 10-bit successive approximation register (SAR) ADC with up to 26 analog input channels. It also includes an internal 1.45 V reference and temperature sensor, usable in HS (high-speed main) mode per datasheet note.
Is R5F101LJAFA#V0 pin-compatible with other RL78/G13 64-pin variants?
R5F101LJAFA#V0 shares the same 64-pin LQFP-0.65mm mechanical footprint and pinout with other RL78/G13 devices in the Lx series (e.g., R5F101LCAFA#V0, R5F101LDAFA#V0), but functional pin assignments (e.g., peripheral mapping) may differ - verify against individual device datasheets before substitution.
R5F101LJAFA#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G13
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 48
- 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:
R5F101LJAFA#V0 FAQ
1.How can I place an order for R5F101LJAFA#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LJAFA#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 R5F101LJAFA#V0 reliable?
The price and inventory of R5F101LJAFA#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LJAFA#V0 is usually 5 days.
3.What payment methods are accepted for R5F101LJAFA#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LJAFA#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LJAFA#V0?
R5F101LJAFA#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LJAFA#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 R5F101LJAFA#V0?
For technical support, including R5F101LJAFA#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LJAFA#V0 requirements.
6.How does Aetrix verify that R5F101LJAFA#V0 is sourced from the original manufacturer or authorized distributors?
All R5F101LJAFA#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 R5F101LJAFA#V0 meets industry standards.
7.What is the process for return or replacement of R5F101LJAFA#V0?
All R5F101LJAFA#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LJAFA#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 R5F101LJAFA#V0 part is unused and in its original packaging.
Return procedure for R5F101LJAFA#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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