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Renesas R5F101LDDFA#X0
- Part No.:
- R5F101LDDFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LDDFA#X0.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,994
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Product details
Overview
R5F101LDDFA#X0 from Renesas is a 64-pin LQFP-0.65mm, industrial-grade RL78/G13 16-bit MCU with 64 KB flash, 4 KB data flash, 4 KB RAM, and true low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 16-bit timers, 10-bit ADC (16 channels), UART/SPI/I²C interfaces, and operates from 1.6–5.5 V across –40°C to +85°C for embedded control in HVAC, motor drives, and smart sensors.
For engineers reviewing the R5F101LDDFA#X0 datasheet, R5F101LDDFA#X0 pinout, R5F101LDDFA#X0 application, or R5F101LDDFA#X0 equivalent, key selection criteria include its no-data-flash configuration, industrial temperature rating, LQFP-64 0.65-mm pitch package, 32 MHz max CPU speed, and integrated real-time clock with calendar function.
Technical Context
The R5F101LDDFA#X0 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). It features on-chip power-on-reset, 14-level voltage detector, and HALT/STOP/SNOOZE low-power modes optimized for battery-backed systems.
It includes a 10-bit A/D converter with up to 16 analog inputs, internal 1.45 V reference and temperature sensor, and serial interfaces including 2–4 UART channels (LIN-capable), 2–8 CSI (SPI-compatible) channels, and 3–10 I²C/Simplified I²C channels - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing and compact code size for resource-constrained firmware. |
| Max Operating Frequency | 32 MHz; delivers 41 DMIPS performance while maintaining ultra-low active current (66 μA/MHz). |
| Memory Configuration | 64 KB code flash + 4 KB data flash + 4 KB RAM; supports background rewriting of data flash during program execution. |
| ADC Resolution & Channels | 10-bit resolution with up to 16 input channels; includes internal 1.45 V reference and temperature sensor for self-calibration. |
| Operating Voltage Range | 1.6 V to 5.5 V; allows direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Temperature Range | –40°C to +85°C (Industrial grade D); qualified for use in factory automation, industrial HMI, and motor control environments. |
| Low-Power Modes | HALT, STOP, SNOOZE; achieves 0.57 μA in STOP mode with RTC + LVD active - suitable for multi-year battery operation. |
Pinout & Package
Package: 64-pin LQFP, 12 mm × 12 mm, 0.65 mm pitch, exposed pad not present, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary digital ground plane connection; multiple pins ensure low-impedance return path for mixed-signal operation. |
| VDD | Power supply | Single 1.6–5.5 V supply for entire chip; decoupling required per Renesas layout guidelines (e.g., 100 nF near each VDD pin). |
| P00–P07 | General-purpose I/O | Bi-directional ports with N-ch open-drain option, TTL input buffer, and programmable pull-up; support different-potential interfacing (1.8/2.5/3 V). |
| P10/P11 | SPI/I²C/UART multiplex | Shared SCK00/SCL00 and SI00/RxD0/SDA00 functions; enables dual-role peripheral routing without external muxing. |
| P20–P27 | Analog input group | ANI0–ANI7 inputs with AVREFP/AVREFM references; supports simultaneous sampling and hardware averaging for noise rejection. |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external debounced signal or microcontroller reset supervisor output. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Fully integrated via single-wire SWD; eliminates need for external JTAG emulator and reduces BOM cost. |
| Self-programming capability | Supports flash shield window and boot swap; enables secure field firmware updates without external programmer. |
| Real-time clock (RTC) | Calendar function (99-year range), alarm, and clock correction; runs independently in STOP mode using 32.768 kHz crystal. |
| DMA controller | 4-channel DMA with 2-clock transfer latency between SFR and RAM; offloads CPU during ADC-to-memory or UART-to-buffer transfers. |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations; accelerates PID control, filtering, and sensor fusion math. |
| Watchdog timer | Dedicated low-speed on-chip oscillator ensures reliable timeout even if main clock fails; configurable interrupt or reset behavior. |
Applications
| Smart Thermostat Control | Industrial Motor Starter |
|---|---|
|
Use Scenario: Standalone HVAC controller managing temperature setpoint, fan speed, valve actuation, and wireless status reporting. IC Role / Device Role / Timing Role: Main system controller executing PID loop, reading thermistor/NTC inputs, driving triac-based AC loads, and handling UART-based Zigbee/Bluetooth module communication. Use Value: Ultra-low STOP-mode current (0.57 μA) extends battery life in wireless thermostats; integrated RTC enables precise scheduling without external timekeeping IC. |
Use Scenario: Compact motor starter unit with overload protection, soft-start sequencing, and RS-485 Modbus telemetry. IC Role / Device Role / Timing Role: Real-time motor control unit sampling current/voltage sensors, generating PWM gate signals, and communicating fault logs over UART-to-RS485 transceiver. Use Value: 10-bit ADC with 16 channels supports simultaneous phase current, bus voltage, and temperature monitoring; 32 MHz CPU handles fast-loop control at ≤100 μs intervals. |
| Programmable Power Supply | Asset Tracking Sensor Node |
|
Use Scenario: Bench-style DC power supply with adjustable voltage/current limits, digital display, and USB-C PD negotiation. IC Role / Device Role / Timing Role: System manager coordinating DAC output, ADC feedback, button/keypad scan, buzzer alerts, and USB PD policy engine via UART. Use Value: Integrated 1.45 V reference and temperature sensor enable accurate calibration drift compensation; 4 KB data flash stores user presets and calibration coefficients. |
Use Scenario: Battery-powered GPS/LoRaWAN node monitoring location, temperature, humidity, and shock events in logistics containers. IC Role / Device Role / Timing Role: Low-power host MCU waking periodically to read sensors, trigger GPS fix, encrypt payload, and transmit via LoRa radio. Use Value: SNOOZE mode allows UART/SPI peripherals to remain active while CPU sleeps - enabling immediate response to sensor interrupts with sub-μA average current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101LDGFA#X0 | Same package and memory (64 KB flash, 4 KB data flash), but adds G-grade temperature range (–40°C to +105°C) and includes data flash security lock. | Required for under-hood automotive or high-ambient industrial enclosures where >85°C operation is needed. | Select when extended temperature qualification and enhanced flash write protection are mandatory. |
| R5F100LDDFA#X0 | Identical pinout and package, but includes 8 KB data flash instead of 4 KB and supports background operation (BGO) for concurrent execution and data flash rewrite. | Suitable for applications requiring frequent non-volatile parameter logging (e.g., energy meter tamper records or motor runtime counters). | Choose when higher data flash endurance (1M cycles) and BGO functionality are critical for firmware robustness. |
Compared with R5F101LDDFA#X0, R5F101LDGFA#X0 provides extended thermal reliability at the cost of higher qualification testing overhead, while R5F100LDDFA#X0 trades reduced data flash capacity for greater flexibility in field-updatable parameter storage - making each variant optimal for distinct lifecycle and functional requirements.
Availability
R5F101LDDFA#X0 is available at Aetrix Electronics and suitable for industrial motor control, smart building HVAC, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F101LDDFA#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 product line delivers ultra-low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and industrial control applications - balancing performance, integration, and energy efficiency without external support components.
FAQ
What is the maximum operating frequency of the R5F101LDDFA#X0?
The R5F101LDDFA#X0 supports a maximum CPU clock frequency of 32 MHz using the high-speed on-chip oscillator, delivering 41 DMIPS performance. Its minimum instruction execution time is 0.03125 μs under this condition, and it maintains full functionality across its 1.6–5.5 V supply range and –40°C to +85°C industrial temperature grade.
Does the R5F101LDDFA#X0 include data flash memory?
No, the R5F101LDDFA#X0 does not include data flash memory. The "101" in the part number explicitly denotes "data flash not provided", distinguishing it from "100" variants like R5F100LDDFA#X0 which integrate 8 KB of data flash. This simplifies firmware design where non-volatile parameter storage is handled externally or not required.
What package type and pin count does the R5F101LDDFA#X0 use?
The R5F101LDDFA#X0 uses a 64-pin LQFP package with 0.65 mm pitch, 12 mm × 12 mm body size, and conforms to JEDEC MS-026 standard. The "FA" suffix in the part number confirms the LQFP-0.65mm variant, and the "#X0" indicates embossed tape packaging - suitable for automated SMT assembly.
Can the R5F101LDDFA#X0 operate from a 1.8 V supply?
Yes, the R5F101LDDFA#X0 operates from 1.6 V to 5.5 V, fully supporting 1.8 V nominal supply rails. At 1.8 V, it maintains full peripheral functionality including ADC (with adjusted reference), UART, SPI, I²C, and timers - enabling direct interface with 1.8 V logic families without level translation.
Is there an on-chip real-time clock in the R5F101LDDFA#X0?
Yes, the R5F101LDDFA#X0 includes a dedicated real-time clock (RTC) module with calendar support (99-year range), alarm function, and clock correction capability. It operates autonomously in STOP mode using a 32.768 kHz crystal or resonator, drawing only 0.57 μA - making it ideal for time-stamped logging and scheduled wake-up in battery-powered systems.
R5F101LDDFA#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 48
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 3K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101LDDFA#X0 FAQ
1.How can I place an order for R5F101LDDFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LDDFA#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 R5F101LDDFA#X0 reliable?
The price and inventory of R5F101LDDFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LDDFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LDDFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LDDFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LDDFA#X0?
R5F101LDDFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LDDFA#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 R5F101LDDFA#X0?
For technical support, including R5F101LDDFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LDDFA#X0 requirements.
6.How does Aetrix verify that R5F101LDDFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LDDFA#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 R5F101LDDFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LDDFA#X0?
All R5F101LDDFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LDDFA#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 R5F101LDDFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LDDFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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