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Renesas R5F101FCAFP#X0
- Part No.:
- R5F101FCAFP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
R5F101FCAFP#X0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,048
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Product details
Overview
R5F101FCAFP#X0 from Renesas is a 44-pin LQFP-44, 1.6–5.5 V, 96 KB flash, 4 KB data flash, 4 KB RAM RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD), 32 MHz max CPU speed, and integrated 10-bit ADC (24 channels), UART, I²C, and SPI interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101FCAFP#X0 datasheet, R5F101FCAFP#X0 pinout, R5F101FCAFP#X0 application, or R5F101FCAFP#X0 equivalent, key selection criteria include its data flash absence (vs. R5F100x variants), LQFP-44 package with 0.8-mm pitch, -40°C to +85°C industrial temperature grade (D suffix), and support for SNOOZE mode wake-up via serial interface or timer events.
Technical Context
The R5F101FCAFP#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed oscillator) to 30.5 μs (32.768 kHz subsystem clock). It integrates on-chip power-on-reset (POR), voltage detector (LVD) with 14 selectable levels, and a dedicated low-speed on-chip watchdog timer.
Its peripheral set includes 8× 16-bit timers, 1× real-time clock with calendar/alarm/correction, 2× UART/LIN channels, 3× I²C/Simplified I²C channels, 2× CSI (SPI-compatible) channels, and an 8/10-bit A/D converter with internal 1.45 V reference and temperature sensor - all operating within the 1.6–5.5 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space |
| Max Operating Frequency | 32 MHz - delivers 41 DMIPS performance at full speed |
| Flash Memory | 96 KB code flash (1 KB block size); no data flash - simplifies firmware update logic but requires external storage for logging |
| RAM Size | 4 KB on-chip RAM - sufficient for real-time control stacks and small buffers in sensor node applications |
| Supply Voltage Range | 1.6 V to 5.5 V - enables direct Li-ion, 3.3 V, or 5 V rail operation without level-shifting |
| Low-Power Modes | HALT (0.72 μA), STOP (0.57 μA w/ RTC+LVD), SNOOZE - supports multi-year battery life in periodic-sense deployments |
| Analog Peripherals | 10-bit A/D converter with 24 input channels, internal 1.45 V reference, and integrated temperature sensor |
Pinout & Package
Package: 44-pin LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain decoupling; supports single-supply 1.6–5.5 V operation |
| P10/SCK00/SCL00 | Port 10 / SPI clock / I²C clock | Multi-function pin enabling hardware SPI master/slave or I²C bus communication without GPIO bit-banging |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Port 11 / SPI input / UART0 RX / debug RX / I²C data | Shared serial interface pin reduces pin count while supporting debug, sensor comms, and bus arbitration |
| P12/SO00/TxD0/TOOLTxD/SDA00 | Port 12 / SPI output / UART0 TX / debug TX / I²C data | Enables full-duplex UART/SPI/I²C on same physical pins - critical for compact sensor node PCB layout |
| P13/INTP0/TOOLCLK | Port 13 / external interrupt / debug clock | Hardware interrupt input with configurable edge detection; doubles as SWD clock for in-circuit debugging |
| P14/INTP1/CLKOUT | Port 14 / external interrupt / clock output | Provides precise system clock output for trace analysis or synchronizing external peripherals |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP modes | 0.57 μA retention current with RTC + LVD active - extends coin-cell battery life beyond 10 years in sleep-dominated use cases |
| On-chip high-accuracy oscillator | +/-1.0% tolerance (1.8–5.5 V, -20 to +85°C) - eliminates external crystal for cost-sensitive timing applications |
| Background data flash rewrite | Not applicable - R5F101 variant lacks data flash memory, avoiding BGO complexity and flash wear management overhead |
| Multi-protocol serial interface | Single pinset supports UART (LIN-ready), I²C, and SPI - reduces external transceiver count and PCB routing layers |
| Integrated temperature sensor | Calibrated on-chip sensor with ±3°C accuracy - enables self-compensated sensor readings without discrete thermal ICs |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Battery-powered gas/water meter collecting pulse counts and environmental data every 15 minutes. IC Role / Device Role / Timing Role: Main controller executing low-duty-cycle measurement, RTC-based wake-up, and secure UART transmission to concentrator. Use Value: 0.57 μA STOP mode with RTC ensures >15-year battery life; 10-bit ADC and temperature sensor enable calibrated flow compensation. |
Use Scenario: DIN-rail mounted vibration/temperature monitor in factory automation with Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Edge signal conditioner and protocol translator interfacing MEMS accelerometer and RS-485 transceiver. Use Value: UART/LIN peripheral supports robust Modbus framing; 4 KB RAM accommodates dual-buffered sensor FIFO and CRC calculation stack. |
| Home Energy Monitor | White Goods Control Panel |
|
Use Scenario: AC-powered residential energy monitor sampling current/voltage via shunt and isolating UART to Wi-Fi module. IC Role / Device Role / Timing Role: Real-time analog acquisition engine with synchronous sampling and isolated serial gateway. Use Value: 24-channel 10-bit ADC supports simultaneous CT and voltage channel capture; 32 MHz CPU handles RMS calculation in <100 μs. |
Use Scenario: Front-panel controller for washing machine managing LED indicators, keypad scan, buzzer, and motor driver enable signals. IC Role / Device Role / Timing Role: Dedicated UI coordinator with PWM-controlled buzzer, key interrupt handling, and GPIO-driven status LEDs. Use Value: On-chip clock output drives buzzer at precise frequencies; N-ch open-drain I/Os directly drive 5 V LEDs without external drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100FCAFP#X0 | Same package and pinout, but includes 8 KB data flash and 8 KB RAM - adds nonvolatile parameter storage capability | Suitable where field-updatable calibration tables or event logs are required | Select when persistent data storage outweighs cost and power trade-offs of extra flash/ram |
| R5F101GCAFB#X0 | 48-pin LFQFP (7×7 mm, 0.5-mm pitch), 128 KB flash, 8 KB RAM, same core/peripherals - larger footprint, higher memory | Better suited for applications needing expanded I/O, larger firmware, or future feature scalability | Choose when design requires ≥36 GPIOs or anticipates firmware growth beyond 96 KB |
Compared with R5F100FCAFP#X0, the R5F101FCAFP#X0 trades data flash and RAM for lower BOM cost and marginally reduced active current; versus R5F101GCAFB#X0, it offers identical functionality in a smaller, lower-cost 44-pin LQFP package - ideal for space-constrained, cost-sensitive industrial controls.
Availability
R5F101FCAFP#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, and white goods control panels requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F101FCAFP#X0 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-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery- and line-powered industrial controls.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101FCAFP#X0?
The R5F101FCAFP#X0 operates up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs under these conditions, enabling deterministic real-time response in motor control and sensor fusion applications. The R5F101FCAFP#X0 maintains this speed across its full 1.6–5.5 V supply range and -40°C to +85°C ambient temperature.
Does the R5F101FCAFP#X0 include data flash memory, and how does that affect firmware design?
No, the R5F101FCAFP#X0 does not include data flash memory - unlike R5F100x variants which offer 4–8 KB. This means the R5F101FCAFP#X0 cannot perform background data rewriting or store calibration parameters internally. Firmware must rely on external EEPROM or FRAM if nonvolatile data storage is required, simplifying flash management but adding external component cost and board area.
What low-power modes are supported by the R5F101FCAFP#X0, and what is the lowest achievable current draw?
The R5F101FCAFP#X0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA - verified at VDD = 1.8–5.5 V and TA = -40°C to +85°C. This enables multi-year operation on primary lithium batteries in wireless sensor networks, with wake-up triggered by RTC alarm, serial activity, or external interrupt.
Which serial communication protocols are natively supported on the R5F101FCAFP#X0, and how are they mapped to pins?
The R5F101FCAFP#X0 supports UART (with LIN compliance), I²C, and CSI (SPI-compatible) protocols. Pins P10–P12 share SCK00/SCL00, SI00/RxD0/SDA00, and SO00/TxD0/SDA00 functions respectively - allowing hardware-level switching between protocols without external logic. Up to 4 UART, 10 I²C, and 8 CSI channels are available depending on pin configuration and peripheral enable settings.
What is the package type and pin count of the R5F101FCAFP#X0, and what does the '#X0' suffix indicate?
The R5F101FCAFP#X0 uses a 44-pin LQFP package (10 × 10 mm, 0.8-mm pitch), denoted by 'FP' in the part number. The '#X0' suffix specifies embossed tape packaging - standard for automated SMT assembly. This distinguishes it from tray-packaged variants (e.g., '#V0') and confirms compatibility with high-volume pick-and-place equipment used in industrial electronics manufacturing.
R5F101FCAFP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 44-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- 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:
- 31
- Program Memory Size:
- 32KB (32K 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 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101FCAFP#X0 FAQ
1.How can I place an order for R5F101FCAFP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101FCAFP#X0 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 R5F101FCAFP#X0 reliable?
The price and inventory of R5F101FCAFP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101FCAFP#X0 is usually 5 days.
3.What payment methods are accepted for R5F101FCAFP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101FCAFP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101FCAFP#X0?
R5F101FCAFP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101FCAFP#X0 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 R5F101FCAFP#X0?
For technical support, including R5F101FCAFP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101FCAFP#X0 requirements.
6.How does Aetrix verify that R5F101FCAFP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101FCAFP#X0 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 R5F101FCAFP#X0 meets industry standards.
7.What is the process for return or replacement of R5F101FCAFP#X0?
All R5F101FCAFP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101FCAFP#X0, 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 R5F101FCAFP#X0 part is unused and in its original packaging.
Return procedure for R5F101FCAFP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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