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Renesas R5F101CAALA#U0
- Part No.:
- R5F101CAALA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 36-WFLGA
- Datasheet:
-
R5F101CAALA#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 36WFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,166
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Product details
Overview
R5F101CAALA#U0 from Renesas is a 36-pin WFLGA-packaged RL78/G13 16-bit microcontroller with 16 KB flash, 2 KB RAM, and no data flash memory, operating from 1.6 V to 5.5 V at up to 32 MHz (41 DMIPS), featuring ultra-low-power HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), 10-bit ADC (26 channels), and real-time clock - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101CAALA#U0 datasheet, R5F101CAALA#U0 pinout, R5F101CAALA#U0 application, or R5F101CAALA#U0 equivalent, key selection criteria include its WFLGA-36 package footprint, absence of on-chip data flash, -40°C to +85°C industrial-grade temperature range (A-grade), and support for CSI, UART/LIN, and I²C interfaces in space-constrained embedded control designs.
Technical Context
The R5F101CAALA#U0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock), and includes dedicated hardware for BCD correction, DMA (2-channel), and multiply-accumulate operations (16×16+32→32 bits).
It integrates analog peripherals including a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, plus digital features such as 16-bit timers (up to 16 channels), interval timer, watchdog timer, and real-time clock with calendar/alarm functions - all optimized for deterministic low-power operation without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with minimal code size overhead. |
| Max Operating Frequency | 32 MHz (41 DMIPS); delivers sufficient throughput for motor control loops and protocol stacks without external PLL. |
| Flash / RAM / Data Flash | 16 KB code flash / 2 KB RAM / 0 KB data flash; suitable for firmware-only applications without field-updatable parameter storage. |
| Power Consumption | 66 μA/MHz active; 0.57 μA in STOP mode with RTC+LVD; enables multi-year battery life in wireless sensor nodes. |
| Analog Peripherals | 10-bit ADC with 26 input channels and internal 1.45 V reference; supports direct sensor interfacing without external voltage references. |
| Digital Interfaces | CSI (SPI-like), UART/LIN (2 channels), I²C (3 channels); provides native support for industrial communication buses and peripheral expansion. |
| Package & Pin Count | WFLGA-36 (4 × 4 mm, 0.5 mm pitch); enables compact PCB layout for space-limited IoT edge devices. |
Pinout & Package
Package: WFLGA-36 (4 × 4 mm, 0.5 mm pitch, bottom-side solder balls). Compatible with reflow assembly and suitable for high-density PCBs requiring minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 1.6–5.5 V supply simplifies power design; dual VSS pins reduce noise coupling in mixed-signal operation. |
| P00–P07, P10–P17, P20–P27, P30–P35 | General-purpose I/O ports | 36 total I/O pins with configurable N-ch open-drain, TTL input, and pull-up options; supports 1.8/2.5/3 V logic level interfacing. |
| P20/P21 | ADC inputs / AVREFP / AVREFM | Dedicated analog reference pins enable precise ratiometric measurements independent of VDD fluctuations. |
| P10/P11 | SCK00/SI00/RxD0/TOOLRxD/SDA00 | Multi-function pins support SPI master/slave, UART debug interface, and I²C slave - reducing pin count for multi-protocol designs. |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/LVD assertion; ensures reliable startup under brown-out conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC and LVD active - enables decade-scale battery operation in always-on monitoring systems. |
| On-chip high-accuracy oscillator | ±1.0% tolerance (1.8–5.5 V, –20 to +85°C); eliminates need for external crystal in cost-sensitive applications. |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - supports time-stamped logging and scheduled wake-up without host MCU intervention. |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations - accelerates PID control and sensor fusion math. |
| Self-programmable flash | Boot swap and flash shield window functions enable secure firmware updates without external programming hardware. |
| Temperature sensor | Integrated silicon diode sensor with calibration data stored in ROM - allows system-level thermal monitoring without external ICs. |
Applications
| Smart Energy Meters | Industrial Sensor Nodes |
|---|---|
Use Scenario: Compact, battery-backed electricity/water/gas meters requiring long-term accuracy and tamper detection. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing LCD display, handling pulse counting, and maintaining RTC-based billing cycles. Use Value: Ultra-low STOP-mode current extends battery life beyond 10 years; integrated ADC and RTC eliminate external timing and reference components. |
Use Scenario: Wireless vibration, temperature, or pressure sensors deployed in factory automation or predictive maintenance systems. IC Role / Device Role / Timing Role: Edge-processing node acquiring analog sensor data, performing local FFT or threshold analysis, and transmitting alerts via UART-to-LoRaWAN bridge. Use Value: 26-channel 10-bit ADC supports multi-sensor aggregation; SNOOZE mode enables event-driven wake-up with sub-μA average current. |
| Home Appliance Controls | Medical Wearables |
Use Scenario: Motor-driven appliances (e.g., washing machines, HVAC blowers) needing precise speed regulation and fault protection. IC Role / Device Role / Timing Role: Real-time motor control unit managing PWM generation, current sensing, and thermal shutdown using on-chip comparators and timers. Use Value: 16-bit timers with dead-time insertion and hardware PWM outputs simplify inverter gate drive; 41 DMIPS handles closed-loop FOC without external DSP. |
Use Scenario: Disposable or rechargeable patient monitors measuring pulse oximetry, skin temperature, or ECG-derived respiration rate. IC Role / Device Role / Timing Role: Low-power signal conditioner and data logger sampling analog front-end, storing timestamps, and managing BLE connection intervals. Use Value: Integrated temperature sensor and 1.45 V ADC reference ensure stable physiological measurement accuracy across battery discharge; WFLGA-36 fits ultra-thin wearable form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100CAALA#U0 | Same WFLGA-36 package and 16 KB flash, but includes 4 KB data flash and supports background data flash rewriting (BGO). | Required where field-updatable calibration tables or user configuration storage is needed. | Select when non-volatile parameter retention between power cycles is mandatory; adds 0.5 KB RAM overhead for flash library. |
| R5F101BAANA#U0 | 24-pin HWQFN (4×4 mm), 16 KB flash, 2 KB RAM, same core/peripherals but fewer I/O (20 vs. 36) and no analog input multiplexing beyond ANI0–ANI2. | Used in simpler controls with minimal analog sensing or I/O expansion needs. | Choose for lowest-cost, smallest-footprint implementation where 26-channel ADC and full I/O set are unnecessary. |
Compared with R5F100CAALA#U0, the R5F101CAALA#U0 trades data flash capability for lower system cost and simplified flash management, while versus R5F101BAANA#U0 it delivers 80% more I/O and full 26-channel ADC support in the same 4×4 mm footprint - making it optimal for feature-rich, space-constrained industrial edge nodes.
Availability
R5F101CAALA#U0 is available at Aetrix Electronics and suitable for smart energy meters, industrial sensor nodes, and home appliance controls requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F101CAALA#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering high integration and energy efficiency for battery-operated and energy-harvesting systems.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101CAALA#U0?
The R5F101CAALA#U0 operates at up to 32 MHz with a peak performance of 41 DMIPS. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator. The device maintains this performance across its full 1.6–5.5 V supply range and –40°C to +85°C ambient temperature, making R5F101CAALA#U0 suitable for real-time control tasks such as motor commutation and protocol stack processing without external clock sources.
Does the R5F101CAALA#U0 include on-chip data flash memory?
No, the R5F101CAALA#U0 does not include on-chip data flash memory. As indicated by the "101" prefix in its part number per Renesas' naming convention, this variant provides only 16 KB of code flash and 2 KB of RAM. Applications requiring non-volatile parameter storage must use external EEPROM or implement wear-leveling in code flash - unlike the R5F100CAALA#U0, which includes 4 KB of dedicated data flash. This makes R5F101CAALA#U0 ideal for fixed-function firmware deployments.
What package type and dimensions does the R5F101CAALA#U0 use?
The R5F101CAALA#U0 uses a WFLGA-36 package: a 4 mm × 4 mm, 0.5 mm pitch wafer-level chip-scale package with bottom-side solder balls. It is supplied in embossed tape (#U0, #W0) and complies with JEDEC J-STD-020 moisture sensitivity level 3. This compact footprint supports high-density PCB layouts in space-constrained applications such as portable medical devices and smart utility modules, where the R5F101CAALA#U0 replaces larger QFP alternatives.
Can the R5F101CAALA#U0 operate from a single-cell lithium battery?
Yes, the R5F101CAALA#U0 supports operation from 1.6 V to 5.5 V, fully covering the discharge curve of a single-cell Li-ion (3.0–4.2 V) or LiFePO₄ (2.5–3.65 V) battery. Its ultra-low-power STOP mode draws just 0.57 μA with RTC and LVD active, enabling multi-year runtime on coin cells or energy-harvesting sources. The on-chip voltage detector (LVD) provides programmable reset thresholds down to 1.6 V, ensuring safe brown-out recovery - a critical capability for battery-powered R5F101CAALA#U0 deployments.
Which serial interfaces are supported by the R5F101CAALA#U0?
The R5F101CAALA#U0 supports three serial interface types: CSI (Renesas' SPI-compatible interface, up to 8 channels), UART/LIN (2 channels with LIN bus support), and I²C/Simplified I²C (3 channels). These are implemented in hardware with independent baud-rate generators and FIFO buffers. All interfaces share multiplexed pins (e.g., P10/P11 support SCK00/SI00/RxD0/SDA00), allowing flexible routing in designs where R5F101CAALA#U0 serves as a protocol bridge or sensor hub without external level shifters.
R5F101CAALA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 36-WFLGA
- 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:
- 26
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
R5F101CAALA#U0 FAQ
1.How can I place an order for R5F101CAALA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101CAALA#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 R5F101CAALA#U0 reliable?
The price and inventory of R5F101CAALA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101CAALA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101CAALA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101CAALA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101CAALA#U0?
R5F101CAALA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101CAALA#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 R5F101CAALA#U0?
For technical support, including R5F101CAALA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101CAALA#U0 requirements.
6.How does Aetrix verify that R5F101CAALA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101CAALA#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 R5F101CAALA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101CAALA#U0?
All R5F101CAALA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101CAALA#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 R5F101CAALA#U0 part is unused and in its original packaging.
Return procedure for R5F101CAALA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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