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Renesas R5F101GAAFB#50
- Part No.:
- R5F101GAAFB#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F101GAAFB#50.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,988
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Product details
Overview
R5F101GAAFB#50 from Renesas is a 48-pin LFQFP-0.5mm-pitch 16-bit RL78/G13 microcontroller with 128 KB flash, 8 KB RAM, and no data flash memory, operating from 1.6 V to 5.5 V across -40°C to +105°C industrial temperature range. It delivers 41 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD), and integrates 16-bit timers, 10-bit ADC (26 channels), UART/SPI/I²C interfaces, and real-time clock - deployed in battery-powered industrial sensors and motor control modules.
For engineers reviewing the R5F101GAAFB#50 datasheet, R5F101GAAFB#50 pinout, R5F101GAAFB#50 application, or R5F101GAAFB#50 equivalent, key selection criteria include its industrial-grade temperature rating (–40°C to +105°C), absence of on-chip data flash, LFQFP-48 package compatibility with high-density PCB layouts, and support for SNOOZE mode for low-power sensor wake-up sequencing.
Technical Context
The R5F101GAAFB#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). Its memory subsystem includes 128 KB code flash (1 KB block size), 8 KB SRAM, and no data flash - distinguishing it from R5F100x variants that include 4–8 KB data flash.
Peripherals include up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 16-bit timer array (16 channels), real-time clock with calendar/alarm, and serial interfaces: up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels - all configurable via dedicated SFRs and DMA (4-channel controller).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing for real-time control loops. |
| Max Operating Frequency | 32 MHz - delivers 41 DMIPS; supports high-speed communication and signal processing tasks. |
| Flash Memory | 128 KB code flash (1 KB erase blocks); no data flash - simplifies firmware update logic but requires external NV storage for logging. |
| RAM Size | 8 KB on-chip SRAM - sufficient for RTOS stacks, protocol buffers, and sensor fusion variables. |
| Supply Voltage Range | 1.6 V to 5.5 V - enables direct interface with Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Operating Temperature | –40°C to +105°C (Industrial G-grade); validated for under-hood automotive and factory-floor environments. |
| Low-Power Modes | HALT (0.57 μA), STOP, SNOOZE - supports multi-year battery life in wireless sensor nodes. |
Pinout & Package
Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial Clock Input/Output | Shared SPI clock (CSI0) or I²C clock (SCL0); bidirectional, open-drain capable for I²C bus sharing. |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial Data Input / UART RX / I²C Data | Multi-function pin supporting SPI input, UART receive, debug tool interface, and I²C data line - requires careful mode configuration during initialization. |
| P12/SO00/TxD0/TOOLTxD/SDA00 | Serial Data Output / UART TX / I²C Data | Enables full-duplex SPI/UART operation and shared I²C data path; supports hardware flow control when used as TxD0. |
| P20/ANI0/AVREFP | Analog Input Channel 0 / ADC Reference Positive | Primary analog input with selectable AVREFP source; enables ratiometric sensing using internal or external reference. |
| P21/ANI1/AVREFM | Analog Input Channel 1 / ADC Reference Negative | Provides differential ADC measurement capability when paired with P20; supports single-ended or pseudo-differential modes. |
| P30/INTP0/RTCCLK | External Interrupt / RTC Clock Input | Accepts 32.768 kHz crystal or external clock for RTC; also serves as edge-triggered interrupt source for wake-up events. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT mode | 0.57 μA typical current draw with RTC and LVD active - enables decade-scale battery operation in metering applications. |
| 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 designs. |
| Background data flash programming | Not supported - R5F101GAAFB#50 lacks data flash; firmware must use code flash or external EEPROM for nonvolatile parameter storage. |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - supports time-stamped logging and scheduled wake-up without host MCU intervention. |
| DMA controller (4-channel) | Reduces CPU load during ADC sampling, UART transfers, or memory-to-memory moves; 2-clock transfer latency between SFR and RAM. |
Applications
| Industrial Sensor Node | Smart HVAC Actuator |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure node transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, RTC-based scheduling, low-power sleep/wake cycles, and UART-to-LoRa interface. Use Value: HALT mode current (0.57 μA) extends CR2032 battery life beyond 5 years; 10-bit ADC with internal reference ensures stable ratiometric readings across voltage droop. |
Use Scenario: Embedded actuator controlling damper position and fan speed in commercial HVAC units with local PID feedback. IC Role / Device Role / Timing Role: Real-time motion controller executing closed-loop PID at 100 Hz, driving PWM outputs, and monitoring thermistor inputs. Use Value: 16-bit timer array provides precise 100 Hz PWM generation and input capture for encoder feedback; 1.6–5.5 V operation tolerates wide input rail fluctuations from 24 V DC supplies. |
| Programmable Logic Relay | Industrial Motor Starter |
Use Scenario: DIN-rail mounted relay module with configurable I/O, Modbus RTU over RS-485, and user-defined ladder logic. IC Role / Device Role / Timing Role: Host processor running embedded PLC runtime, managing RS-485 transceiver control, GPIO scanning, and nonvolatile program storage. Use Value: 128 KB flash accommodates compiled ladder logic plus Modbus stack; 4-channel DMA offloads UART and GPIO bit-banging tasks from CPU. |
Use Scenario: Three-phase motor starter with soft-start ramp, overload detection, and thermal protection using NTC sensors. IC Role / Device Role / Timing Role: Safety-critical supervisor monitoring current sense ADCs, executing thermal shutdown logic, and driving gate drivers via PWM. Use Value: –40°C to +105°C rating ensures reliability inside enclosed motor cabinets; LVD with 14-level selection enables precise brown-out detection before MOSFET driver failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100GAAFB#50 | Includes 4 KB data flash; identical 128 KB code flash, 8 KB RAM, and LFQFP-48 package. | Preferred where firmware requires field-updatable calibration tables or event logs without external EEPROM. | Select R5F100GAAFB#50 if data flash persistence is required; otherwise R5F101GAAFB#50 reduces BOM cost and simplifies flash management. |
| RL78/G14 R5F11GGAFA#50 | Enhanced RL78/G14 core; adds 32 KB data flash, 16 KB RAM, and CAN 2.0B interface - larger footprint (64-pin LQFP). | Suitable for CAN-connected industrial networks; not drop-in due to pin count, peripheral mapping, and voltage regulator requirements. | Choose RL78/G14 only when CAN bus integration or larger RAM for complex protocols is mandatory; migration requires PCB and firmware redesign. |
Compared with R5F100GAAFB#50, the R5F101GAAFB#50 saves cost and flash management complexity by omitting data flash, while RL78/G14 offers CAN and expanded memory at the expense of pin compatibility and layout changes - making R5F101GAAFB#50 optimal for cost-sensitive, non-CAN, self-contained control applications.
Availability
R5F101GAAFB#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, and programmable logic relays requiring stable component supply, long-term lifecycle assurance, and industrial temperature compliance.
Supply support for R5F101GAAFB#50 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 infrastructure markets.
The RL78/G13 family targets cost-optimized, ultra-low-power general-purpose embedded control - balancing performance, energy efficiency, and peripheral richness for industrial automation and consumer appliances.
FAQ
Does R5F101GAAFB#50 include on-chip data flash memory?
No, R5F101GAAFB#50 does not include data flash memory. Unlike the R5F100x series, the R5F101x series omits data flash entirely. Firmware must store nonvolatile parameters in code flash (with wear-leveling) or use external EEPROM/FRAM. This design reduces cost and simplifies flash programming routines in R5F101GAAFB#50-based systems.
What is the maximum ambient temperature rating for R5F101GAAFB#50?
The R5F101GAAFB#50 is rated for industrial operation from –40°C to +105°C (G-grade). This specification is validated per Renesas' qualification standards and applies across the full supply voltage range (1.6 V to 5.5 V), making R5F101GAAFB#50 suitable for under-hood automotive modules and factory-floor controllers where thermal derating is critical.
Which package type and pin count does R5F101GAAFB#50 use?
R5F101GAAFB#50 uses a 48-pin LFQFP package with 0.5 mm pitch and 7 mm × 7 mm body size. The "FB" suffix in the part number explicitly denotes this LFQFP variant. It is distinct from HWQFN ("NA") or LQFP-0.65mm ("FA") variants in the same family, and pin compatibility is limited to other "FB"-suffixed RL78/G13 devices.
Can R5F101GAAFB#50 operate without an external crystal?
Yes, R5F101GAAFB#50 can operate without an external crystal. Its high-accuracy on-chip oscillator supports frequencies from 1 MHz to 32 MHz with ±1.0% tolerance across 1.8–5.5 V and –20 to +85°C. For RTC functionality, however, a 32.768 kHz crystal or external clock must be connected to P30/RTCCLK - a requirement retained in R5F101GAAFB#50.
How many ADC channels does R5F101GAAFB#50 support, and what is the resolution?
R5F101GAAFB#50 supports up to 26 analog input channels with 10-bit resolution. It includes an internal 1.45 V reference voltage and a calibrated temperature sensor. The ADC operates across the full 1.6–5.5 V supply range, enabling accurate ratiometric measurements even under varying battery voltage conditions in R5F101GAAFB#50-based portable equipment.
R5F101GAAFB#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 34
- 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 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101GAAFB#50 FAQ
1.How can I place an order for R5F101GAAFB#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101GAAFB#50 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 R5F101GAAFB#50 reliable?
The price and inventory of R5F101GAAFB#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101GAAFB#50 is usually 5 days.
3.What payment methods are accepted for R5F101GAAFB#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101GAAFB#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101GAAFB#50?
R5F101GAAFB#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101GAAFB#50 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 R5F101GAAFB#50?
For technical support, including R5F101GAAFB#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101GAAFB#50 requirements.
6.How does Aetrix verify that R5F101GAAFB#50 is sourced from the original manufacturer or authorized distributors?
All R5F101GAAFB#50 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 R5F101GAAFB#50 meets industry standards.
7.What is the process for return or replacement of R5F101GAAFB#50?
All R5F101GAAFB#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101GAAFB#50, 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 R5F101GAAFB#50 part is unused and in its original packaging.
Return procedure for R5F101GAAFB#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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