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Renesas R5F101BEANA#U0
- Part No.:
- R5F101BEANA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F101BEANA#U0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,678
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Product details
Overview
R5F101BEANA#U0 from Renesas is a 32-bit RL78/G13 microcontroller with 64 KB flash memory, 4 KB data flash, and 4 KB RAM, operating at up to 32 MHz with 41 DMIPS performance. It features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD), 10-bit ADC (26 channels), RTC, multiple serial interfaces (UART, I²C, CSI), and operates from 1.6–5.5 V in industrial temperature range (−40°C to +85°C). Used in battery-powered sensor nodes and smart home control units.
For engineers reviewing the R5F101BEANA#U0 datasheet, R5F101BEANA#U0 pinout, R5F101BEANA#U0 application, or R5F101BEANA#U0 equivalent, key selection criteria include its HWQFN-32 package, absence of on-chip data flash (distinguishing it from R5F100x variants), low-power HALT/STOP/SNOOZE modes, and integrated RTC with calendar function for time-stamped sensing.
Technical Context
The R5F101BEANA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). Its memory subsystem includes 64 KB code flash (1 KB block size), no data flash (per part numbering convention), and 4 KB SRAM - with flash self-programming enabled via boot swap and shield window functions.
Peripherals include eight 16-bit timers, one 12-bit interval timer, one real-time clock with calendar/alarm/correction, one watchdog timer, and dual-channel DMA. Serial connectivity comprises up to four UART/LIN channels, three to ten I²C/Simplified I²C channels, and two to eight CSI (SPI-compatible) channels - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 32-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Operating Frequency | 32 MHz - delivers 41 DMIPS for deterministic real-time control |
| Flash Memory | 64 KB code flash with 1 KB erase blocks and security lock against unauthorized rewrite |
| Data Flash | Not integrated - distinguishes R5F101x series from R5F100x; external EEPROM or FRAM required for nonvolatile parameter storage |
| RAM Size | 4 KB on-chip SRAM - sufficient for RTOS stacks, communication buffers, and sensor fusion algorithms |
| ADC Resolution & Channels | 10-bit SAR ADC with 26 analog inputs and internal 1.45 V reference voltage |
| Power Supply Range | 1.6 V to 5.5 V - supports direct Li-ion, coin-cell, or 3.3/5 V rail operation without regulators |
| Operating Temperature | −40°C to +85°C (Industrial grade D variant) - qualified for extended ambient deployment |
Pinout & Package
Package: HWQFN-32 (5 × 5 mm, 0.5 mm pitch), wettable flank, lead-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation; decoupling required per Renesas layout guidelines |
| P00–P07 | General-purpose I/O port | 8-bit port with N-ch open-drain capability, TTL input buffer, and programmable pull-up resistors |
| P10–P17 | Multi-function port | Supports SCK00/SCL00, SI00/RxD0/TOOLRxD/SDA00, SO00/TxD0/TOOLTxD, etc. - enables shared debug and comms pins |
| P20–P27 | Analog input port | Includes ANI0–ANI7 and AVREFP/AVREFM - allows simultaneous 8-channel sampling with external reference |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits |
| CLKP/CLKM | Crystal oscillator terminals | Supports 32.768 kHz crystal for RTC; high-accuracy internal oscillator eliminates need for external clock in many cases |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-μA sleep states while retaining RAM content and RTC operation - critical for multi-year battery life |
| On-chip RTC with calendar and alarm | 99-year calendar, automatic leap-year correction, and wake-on-alarm - eliminates external RTC IC and associated BOM cost |
| Background operation (BGO) support | Not applicable - R5F101x lacks data flash; BGO only relevant for R5F100x parts with data flash rewrite capability |
| Integrated voltage detector (LVD) | 14-level selectable reset/interrupt threshold - provides robust brown-out protection across wide VDD range |
| Hardware multiplier/divider unit | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations - accelerates motor control and filtering math |
| Dual-channel DMA controller | Reduces CPU load during peripheral-to-memory transfers (e.g., ADC → RAM, UART TX → buffer) with 2-cycle transfer latency |
Applications
| Smart Thermostat Control | Wireless Sensor Node |
|---|---|
Use Scenario: Local temperature/humidity regulation with display, relay control, and Zigbee/Bluetooth LE interface. IC Role / Device Role / Timing Role: Main system controller executing PID loop, managing I²C sensors, driving segment LCD, and handling wireless co-processor UART commands. Use Value: Integrated RTC enables accurate scheduling of HVAC cycles; 10-bit ADC resolves ±0.1°C sensor steps; low-power STOP mode extends battery life between readings. | Use Scenario: Battery-powered environmental monitor transmitting data every 5 minutes via LoRaWAN or NB-IoT. IC Role / Device Role / Timing Role: Sensor aggregator and protocol stack host - reads analog/digital sensors, timestamps data, manages radio sleep/wake, and handles secure firmware updates. Use Value: 0.57 μA RTC+LVD mode allows >5-year operation on CR2032; UART with LIN support simplifies connection to modem; 64 KB flash accommodates bootloader + application + OTA update image. |
| Industrial Panel Meter | Appliance Motor Control |
Use Scenario: DIN-rail mounted meter measuring AC voltage/current with LED display and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Primary measurement engine - samples isolated analog inputs via sigma-delta front-end, computes RMS values, drives 7-segment display, and manages RS-485 transceiver timing. Use Value: 26-channel ADC supports multi-signal acquisition; 41 DMIPS handles real-time RMS calculation; wide 1.6–5.5 V supply tolerates unregulated industrial rails. | Use Scenario: Brushless DC motor driver in HVAC blower or refrigerator compressor with Hall-effect feedback and PWM control. IC Role / Device Role / Timing Role: Motion controller generating 3-phase complementary PWM, reading Hall sensors, executing commutation logic, and monitoring overcurrent/temperature faults. Use Value: Hardware multiplier accelerates Clarke/Park transforms; 16-bit timers with dead-time insertion enable precise gate drive; N-ch open-drain I/O safely interfaces with level-shifted gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100BEANA#U0 | Same 64 KB flash, 4 KB RAM, and HWQFN-32 package - but includes 4 KB data flash and supports background operation (BGO) | Preferred where field-updatable calibration tables or logging data must be stored without halting program execution | Select R5F100BEANA#U0 if nonvolatile parameter storage is required; otherwise R5F101BEANA#U0 reduces cost and complexity |
| RL78/G14 R5F104BEANA#U0 | Successor family with 128 KB flash, 12 KB RAM, enhanced ADC (12-bit, 32 ch), and additional peripherals (USB, CAN) | Suitable for next-gen designs requiring higher code density, richer analog front-end, or automotive-grade CAN bus integration | Choose R5F104BEANA#U0 for future-proofing or feature expansion; R5F101BEANA#U0 remains optimal for cost-sensitive, low-power legacy upgrades |
Compared with R5F100BEANA#U0, the R5F101BEANA#U0 removes data flash to reduce die size and cost - ideal when parameters are stored externally or infrequently updated. Against R5F104BEANA#U0, it trades advanced peripherals and memory for lower power and bill-of-material simplicity in established designs.
Availability
R5F101BEANA#U0 is available at Aetrix Electronics and suitable for smart thermostats, wireless sensor nodes, industrial panel meters, and appliance motor controllers requiring stable component supply and long-term industrial qualification.
Supply support for R5F101BEANA#U0 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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, delivering 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 - emphasizing energy efficiency, integrated peripherals, and rapid development with scalable toolchains and middleware.
FAQ
What is the difference between R5F101BEANA#U0 and R5F100BEANA#U0?
The R5F101BEANA#U0 omits on-chip data flash memory (4 KB in R5F100BEANA#U0), reducing cost and die area while retaining identical 64 KB code flash, 4 KB RAM, and HWQFN-32 packaging. This makes R5F101BEANA#U0 ideal for applications where nonvolatile parameter storage is handled externally or not required - such as fixed-function controllers or those using external EEPROM. The R5F100BEANA#U0 supports background operation (BGO) for concurrent data flash writes and program execution.
Does R5F101BEANA#U0 support real-time clock (RTC) functionality?
Yes, R5F101BEANA#U0 integrates a full-featured RTC with calendar support (99-year range), alarm interrupt, and automatic clock correction - all operational in STOP mode with only 0.57 μA current draw. It accepts 32.768 kHz crystal input on CLKP/CLKM pins and can also use the internal low-speed oscillator. No external RTC IC is needed, simplifying design and reducing BOM count.
What debug interface does R5F101BEANA#U0 provide?
R5F101BEANA#U0 supports on-chip debugging via the single-wire debug (SWD) interface using the TOOLRxD and TOOLTxD pins (P11 and P12), compatible with Renesas E2 emulator and CS+ IDE. It does not require JTAG; SWD enables full breakpoint, step-through, and memory inspection capabilities with minimal pin overhead - preserving I/O for application use.
Can R5F101BEANA#U0 operate from a 1.8 V supply?
Yes, R5F101BEANA#U0 operates across 1.6 V to 5.5 V, fully supporting 1.8 V nominal supply. At 1.8 V, maximum frequency is reduced to 16 MHz (per datasheet VDD–frequency derating curve), delivering ~20.5 DMIPS - sufficient for most sensor aggregation and control tasks. All peripherals including ADC, RTC, and UART remain functional, enabling direct interfacing with 1.8 V logic devices without level shifters.
Is hardware CRC calculation supported on R5F101BEANA#U0?
No, R5F101BEANA#U0 does not include a dedicated hardware CRC module. CRC-16 or CRC-32 computation must be implemented in firmware using the integrated 16-bit multiplier for accelerated polynomial arithmetic. Renesas provides optimized CRC library functions in the RL78 G13 Firmware Integration Technology (FIT) modules, minimizing CPU cycles required for checksum generation in communication or firmware validation routines.
R5F101BEANA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- 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:
- 22
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101BEANA#U0 FAQ
1.How can I place an order for R5F101BEANA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101BEANA#U0 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 R5F101BEANA#U0 reliable?
The price and inventory of R5F101BEANA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101BEANA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101BEANA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101BEANA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101BEANA#U0?
R5F101BEANA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101BEANA#U0 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 R5F101BEANA#U0?
For technical support, including R5F101BEANA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101BEANA#U0 requirements.
6.How does Aetrix verify that R5F101BEANA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101BEANA#U0 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 R5F101BEANA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101BEANA#U0?
All R5F101BEANA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101BEANA#U0, 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 R5F101BEANA#U0 part is unused and in its original packaging.
Return procedure for R5F101BEANA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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