My Inquiry
My Account
Renesas R5F101GFAFB#X0
- Part No.:
- R5F101GFAFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F101GFAFB#X0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,153
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F101GFAFB#X0 from Renesas is a 48-pin LFQFP-packaged RL78/G13 16-bit microcontroller with 128 KB flash, 8 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), integrated 10-bit ADC (26 channels), RTC calendar, and UART/I²C/CSI interfaces - deployed in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the R5F101GFAFB#X0 datasheet, R5F101GFAFB#X0 pinout, R5F101GFAFB#X0 application, or R5F101GFAFB#X0 equivalent, key selection criteria include its 48-pin LFQFP-0.5mm package, absence of on-chip data flash, -40°C to +105°C industrial temperature grade (G suffix), and support for background data flash programming via external library - critical for firmware-over-the-air updates in field-deployed equipment.
Technical Context
The R5F101GFAFB#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting variable instruction execution time (0.03125 μs @ 32 MHz high-speed mode to 30.5 μs @ 32.768 kHz subsystem clock) and 1 MB address space. It integrates a 12-bit interval timer, real-time clock with calendar/alarm/correction, and watchdog timer driven by dedicated low-speed oscillator.
Its peripheral set includes up to 16× 16-bit timers, 3–10× I²C/Simplified I²C channels, 2–4× UART/LIN, 2–8× CSI (SPI-compatible), 2–4-channel DMA, 16×16→32-bit multiplier/divider/MAC, and 8/10-bit ADC with internal 1.45 V reference and temperature sensor - all configurable under single-supply operation without external voltage scaling.
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 (41 DMIPS); delivers sufficient throughput for motor control and protocol stack handling. |
| Flash Memory | 128 KB code flash (1 KB block size); supports secure erase/write prohibition and boot swap. |
| RAM Size | 8 KB on-chip RAM; accommodates RTOS kernel, communication buffers, and application variables. |
| ADC Resolution & Channels | 10-bit resolution, 26 analog input channels; enables multi-sensor monitoring without external MUX. |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA w/ RTC+LVD active); extends battery life in always-on sensing. |
| Operating Voltage | 1.6 V to 5.5 V single supply; eliminates need for level shifters when interfacing with 1.8/2.5/3.3/5 V peripherals. |
| Temperature Range | -40°C to +105°C (industrial G-grade); qualified for under-hood automotive and factory-floor environments. |
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 |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power pins per side ensure stable core/peripheral rail decoupling; supports single 1.6–5.5 V supply. |
| P00–P07, P10–P17, P20–P27, P30–P37, P40–P47 | General-purpose I/O ports | Up to 39 programmable GPIOs with N-ch open-drain, TTL input, pull-up options; enable mixed-voltage interfacing. |
| P10/P11/P12/P13 | CSI0/SCL0/SDA0/RxD0/TxD0 | Shared serial interface pins support SPI-like CSI, I²C master/slave, and UART simultaneously via peripheral switching. |
| P20/P21 | ANI0/ANI1/AVREFP/AVREFM | Analog input channels with dedicated reference voltage inputs; allow ratiometric or absolute ADC measurements. |
| XT1/XT2 | Crystal oscillator connection | Supports 32.768 kHz crystal for RTC accuracy; internal oscillator provides 1–32 MHz without external components. |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits for robust power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA current draw with RTC and LVD active - enables decade-long battery life in metering applications. |
| Self-programming flash | On-chip flash shield window and boot swap enable secure firmware updates without external programmer. |
| Background data flash write | Not applicable - R5F101x series lacks embedded data flash; requires external EEPROM or FRAM for nonvolatile parameter storage. |
| Multi-protocol serial interfaces | Hardware support for UART (LIN-capable), I²C, and CSI on shared pins reduces PCB routing complexity. |
| Integrated RTC with calendar | 99-year calendar, alarm, and auto-correction eliminate need for external RTC IC in time-stamped logging systems. |
| DMA with 2-clock transfer | 2-cycle transfers between SFR and RAM accelerate ADC sampling, UART buffering, and PWM waveform generation. |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Wireless temperature/humidity/pressure sensor node powered by coin cell or energy harvester. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, data preprocessing, BLE/Wi-Fi stack, and ultra-low-power sleep scheduling. Use Value: 0.57 μA STOP mode with RTC wake-up enables years of operation; 10-bit ADC directly digitizes analog sensor outputs without signal conditioning. |
Use Scenario: Residential HVAC control unit requiring precise ambient sensing, user interface, and relay actuation. IC Role / Device Role / Timing Role: Central MCU managing thermistor readings, display refresh, button debounce, fan speed control, and communication with cloud gateway. Use Value: Integrated 16-bit timers drive precise PWM for brushless fan control; LIN-capable UART interfaces with legacy HVAC bus networks. |
| Programmable Logic Controller (PLC) I/O Module | Industrial Motor Starter |
|
Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs/outputs and Modbus RTU interface. IC Role / Device Role / Timing Role: Protocol handler and I/O state manager translating Modbus commands into GPIO/timer actions. Use Value: 39 GPIOs support configurable sink/source digital I/O; 41 DMIPS headroom handles CRC calculation and packet assembly in real time. |
Use Scenario: Compact motor starter with soft-start, overload protection, and status reporting via RS-485. IC Role / Device Role / Timing Role: Real-time motor control engine executing current sensing, PWM generation, fault detection, and thermal management. Use Value: On-chip 10-bit ADC measures phase current via shunt resistor; watchdog timer ensures fail-safe shutdown during lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100GFAFB#X0 | Same package and pinout; includes 8 KB data flash memory and BGO capability. | Preferred where field-updatable calibration tables or event logs must be stored internally. | Select when nonvolatile parameter storage is required without external memory. |
| RL78/G14 R5F117GCAFP#V0 | Enhanced RL78/G14 variant with 128 KB flash, 12 KB RAM, and added CAN 2.0B interface. | Suitable for distributed control systems requiring CAN bus connectivity (e.g., building automation). | Choose only if CAN physical layer integration is mandatory; otherwise, R5F101GFAFB#X0 offers lower cost and identical footprint. |
Compared with R5F100GFAFB#X0, this part trades internal data flash for reduced BOM cost and smaller flash library RAM usage; versus RL78/G14, it omits CAN but maintains full backward compatibility with RL78/G13 toolchain and middleware.
Availability
R5F101GFAFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for R5F101GFAFB#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 applications - balancing performance, integration, and energy efficiency for battery-operated and industrial control systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for R5F101GFAFB#X0?
The R5F101GFAFB#X0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This benchmark reflects its RL78 CPU core's 3-stage pipeline efficiency and instruction mix optimization, enabling deterministic execution for real-time control tasks such as motor commutation and protocol parsing without external acceleration.
Does R5F101GFAFB#X0 include on-chip data flash memory?
No, R5F101GFAFB#X0 does not include on-chip data flash memory. The "101" in the part number explicitly denotes absence of data flash, unlike "100" variants which integrate 4–8 KB. Applications requiring nonvolatile parameter storage must use external EEPROM, FRAM, or rely on code flash sectors managed via Renesas' Flash Self-Programming Library.
What package type and pin count does R5F101GFAFB#X0 use?
R5F101GFAFB#X0 uses a 48-pin LFQFP package with 0.5 mm pitch (Renesas code PLQP0048KF-A). The "FB" suffix confirms LFQFP, and "#X0" indicates embossed tape packaging - compatible with automated SMT placement and rated for industrial temperature range (-40°C to +105°C).
Which low-power modes are supported by R5F101GFAFB#X0, and what is the lowest achievable current draw?
R5F101GFAFB#X0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it achieves 0.57 μA typical current draw - verified across the full -40°C to +105°C range. This enables multi-year operation in energy-constrained applications like wireless sensor transmitters and portable diagnostic tools.
Can R5F101GFAFB#X0 execute code while rewriting flash memory?
No, R5F101GFAFB#X0 cannot execute code from flash during flash rewrite operations because it lacks on-chip data flash and background operation (BGO) capability. Code flash self-programming requires entering a dedicated programming mode that halts normal program execution - consistent with RL78/G13 architecture constraints for "101" series devices.
What serial communication interfaces are available on R5F101GFAFB#X0, and how are they mapped to pins?
R5F101GFAFB#X0 supports UART (LIN-capable), I²C/Simplified I²C, and CSI (SPI-compatible) interfaces. These share pins such as P10 (SCK00/SCL00), P11 (SI00/RxD0/SDA00), and P12 (SO00/TxD0), allowing flexible configuration via peripheral enable registers - enabling simultaneous use of UART and I²C without pin conflict when properly multiplexed.
R5F101GFAFB#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-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:
- 34
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
R5F101GFAFB#X0 FAQ
1.How can I place an order for R5F101GFAFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101GFAFB#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 R5F101GFAFB#X0 reliable?
The price and inventory of R5F101GFAFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101GFAFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F101GFAFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101GFAFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101GFAFB#X0?
R5F101GFAFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101GFAFB#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 R5F101GFAFB#X0?
For technical support, including R5F101GFAFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101GFAFB#X0 requirements.
6.How does Aetrix verify that R5F101GFAFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101GFAFB#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 R5F101GFAFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F101GFAFB#X0?
All R5F101GFAFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101GFAFB#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 R5F101GFAFB#X0 part is unused and in its original packaging.
Return procedure for R5F101GFAFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F101GFAFB#X0 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
