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Renesas R5F104LEGFB#30
- Part No.:
- R5F104LEGFB#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F104LEGFB#30.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,517
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Product details
Overview
R5F104LEGFB#30 from Renesas is a 48-pin LFQFP, 512 KB flash, 48 KB RAM RL78/G14 16-bit microcontroller with ultra-low power operation (66 μA/MHz), integrated RTC, 10-bit ADC (20 channels), and dual UART/LIN interfaces - deployed in industrial motor control and sensor node applications requiring extended battery life and deterministic real-time response.
For engineers reviewing the R5F104LEGFB#30 datasheet, R5F104LEGFB#30 pinout, R5F104LEGFB#30 application, or R5F104LEGFB#30 equivalent, key selection criteria include its -40°C to +105°C industrial temperature grade (G), 0.5 mm pitch LFQFP package, 512 KB code flash with data flash shield window, and hardware event linking via ELC for low-latency peripheral coordination.
Technical Context
The R5F104LEGFB#30 implements the RL78 CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz), and includes on-chip high-accuracy ±1.0% oscillator (1–64 MHz selectable). It integrates a Data Transfer Controller (DTC) with chain transfer and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral signal routing without CPU intervention.
Its memory subsystem comprises 512 KB code flash (1 KB block size, security lockable), 8 KB data flash (1M rewrite cycles, background operation), and 48 KB RAM. Power management includes HALT, STOP, and SNOOZE modes, with 0.60 μA RTC+LVD retention current at VDD = 1.6–5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline, 44 DMIPS @ 32 MHz |
| Flash Memory | 512 KB code flash with block erase protection and boot swapping |
| Data Flash | 8 KB with background operation (BGO) and 1,000,000 write cycles |
| RAM | 48 KB on-chip SRAM, including dedicated areas for flash library execution |
| ADC | 10-bit resolution, 20-channel input, internal 1.45 V reference and temperature sensor |
| Timers | 12-channel 16-bit TAU, 1-channel 12-bit interval timer, calendar RTC, watchdog |
| Serial Interfaces | 3–4 UART/LIN, 4–10 I²C, 3–8 CSI (SPI-compatible), all configurable via ELC |
| Operating Temp | -40°C to +105°C (industrial G-grade), 1.6–5.5 V supply range |
Pinout & Package
Package: 48-pin LFQFP, 7 × 7 mm, 0.5 mm pitch, exposed pad not present (non-HWQFN variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P17 | Multi-function serial I/O (CSI, UART, I²C) | Configurable as SCK11/SI11/SDA11/TRDIOD1 etc.; supports LIN bus framing via UART mode |
| P50/P51 | UART0 primary interface (RxD0/TxD0) | Dedicated full-duplex UART with TOOLRxD/TOOLTxD debug capability |
| P30/P31 | RTC1HZ output & timer I/O (TI03/TO03) | Enables precise 1 Hz timekeeping and PWM generation with interrupt-on-match |
| P121/P122 | Crystal oscillator inputs (X1/X2) | Supports external 32.768 kHz crystal for RTC accuracy or 1–20 MHz for main clock |
| REGC | Regulator bypass capacitor terminal | Requires 0.47–1 µF capacitor to VSS for internal LDO stability |
| VDD/VSS | Power supply pins | Single 1.6–5.5 V rail; VSS serves as analog/digital ground reference |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to POR and LVD circuits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP modes | Reduces active current to 66 μA/MHz and retention to 0.60 μA (RTC+LVD only) |
| Event Link Controller (ELC) | Routes 19–26 peripheral events directly (e.g., ADC end → DMA trigger) without CPU overhead |
| Self-programming flash shield | Prevents unauthorized reprogramming via hardware lock of flash shield window register |
| Hardware CRC calculator | Accelerates firmware integrity checks and communication protocol checksums in real time |
| Dual voltage detection (LVD) | 14-level programmable voltage monitor with interrupt/reset options for brown-out protection |
| On-chip key interrupt | Scans up to 8 keys in low-power mode using dedicated hardware, eliminating polling overhead |
Applications
| Motor Control | Sensor Node |
|---|---|
Use Scenario: Brushless DC motor drive in HVAC blowers with thermal monitoring and speed regulation. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, managing PWM outputs via TAU timers, and reading temperature/phase current via 10-bit ADC. Use Value: 44 DMIPS performance and ELC-triggered ADC-to-PWM synchronization enable <1 µs timing jitter in commutation cycles. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and CO₂ over I²C, transmitting via UART to gateway. IC Role / Device Role / Timing Role: System-on-chip host managing sensor polling, RTC-timed wake-up, and low-power UART transmission bursts. Use Value: 0.60 μA RTC+LVD retention extends 2000 mAh battery life to >10 years in sleep-dominated operation. |
| Industrial HMI | Smart Metering |
Use Scenario: Panel-mounted display controller with touch interface, buzzer feedback, and CAN/LIN connectivity. IC Role / Device Role / Timing Role: UI processor handling key scan, PCLBUZ0-driven audio alerts, and LIN communication to master ECU. Use Value: Integrated PCLBUZ0 timer and LIN-capable UART eliminate external transceivers and reduce BOM count by 2 components. | Use Scenario: Electricity meter with metrology IC interface, tamper detection, and optical/RF communication. IC Role / Device Role / Timing Role: Secure data aggregator validating metrology readings, logging events to data flash, and managing secure UART/IR comms. Use Value: 8 KB data flash with 1M write endurance enables 10-year lifetime of hourly energy logs with CRC-protected integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104LKGFB#30 | Same 512 KB flash, 48 KB RAM, but 64-pin LQFP (0.65 mm pitch); adds 4 more I/O and 2 extra ADC channels | Required when board layout supports larger footprint and higher I/O count for multi-sensor expansion | Select for designs needing ≥60 GPIO or simultaneous 24-channel ADC sampling |
| R5F104LEGLF#30 | Identical functionality and pinout, but in 48-pin LQFP (0.8 mm pitch) instead of LFQFP; different land pattern and thermal profile | Used where legacy PCB design uses 0.8 mm pitch LQFP footprints and reflow profile tolerates higher thermal mass | Choose when matching existing LQFP assembly lines or avoiding fine-pitch rework |
Compared with R5F104LEGFB#30, R5F104LKGFB#30 provides scalable I/O for complex systems, while R5F104LEGLF#30 maintains functional equivalence with relaxed assembly requirements - both retain identical flash/RAM, ELC, and low-power architecture.
Availability
R5F104LEGFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, sensor nodes, and HMI applications requiring stable component supply across extended product lifecycles.
Supply support for R5F104LEGFB#30 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/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer devices demanding robust real-time control, extended battery life, and integrated analog peripherals.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating of the R5F104LEGFB#30?
The R5F104LEGFB#30 operates at up to 32 MHz with a measured performance of 44 DMIPS. This rating is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator, validated under typical conditions (VDD = 3.3 V, TA = 25°C). The R5F104LEGFB#30 maintains this throughput across its full industrial temperature range (-40°C to +105°C).
Does the R5F104LEGFB#30 support LIN bus communication, and how is it implemented?
Yes, the R5F104LEGFB#30 supports LIN bus communication through its UART peripherals, which include built-in LIN break detection and sync field generation. UART0 and UART2 can be configured for LIN 2.1/2.2 compliance, with automatic header checksum calculation and slave node response timing control. The R5F104LEGFB#30 requires no external LIN transceiver for basic node operation when paired with a compliant driver.
What are the data flash endurance and programming voltage requirements for the R5F104LEGFB#30?
The R5F104LEGFB#30 features 8 KB of data flash rated for 1,000,000 write/erase cycles (typical) and supports rewriting at VDD = 1.8–5.5 V. Background operation (BGO) allows program execution from code flash during data flash writes, and the flash library reserves RAM starting at address F3F00H for self-programming routines. The R5F104LEGFB#30 does not require elevated voltage generators or external charge pumps.
How does the Event Link Controller (ELC) enhance real-time responsiveness in the R5F104LEGFB#30?
The ELC in the R5F104LEGFB#30 enables hardware-level peripheral event chaining - for example, an ADC conversion completion can directly trigger a DTC transfer or timer reload without CPU involvement. This reduces interrupt latency to sub-microsecond levels and frees CPU bandwidth for application logic. The R5F104LEGFB#30 supports 19–26 configurable event sources, making it ideal for deterministic control loops in motor or power conversion systems.
What is the purpose of the REGC pin on the R5F104LEGFB#30, and what capacitor value is required?
REGC is the bypass terminal for the internal voltage regulator's output capacitor, essential for stabilizing the core LDO. The R5F104LEGFB#30 requires a 0.47 µF to 1.0 µF ceramic capacitor connected between REGC and VSS, placed as close as possible to the pin. Omission or undersizing causes erratic reset behavior, oscillator startup failure, or increased current consumption - confirmed in Renesas hardware design guidelines for the RL78/G14 family.
R5F104LEGFB#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G14
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 5.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104LEGFB#30 FAQ
1.How can I place an order for R5F104LEGFB#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104LEGFB#30 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 R5F104LEGFB#30 reliable?
The price and inventory of R5F104LEGFB#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104LEGFB#30 is usually 5 days.
3.What payment methods are accepted for R5F104LEGFB#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104LEGFB#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104LEGFB#30?
R5F104LEGFB#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104LEGFB#30 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 R5F104LEGFB#30?
For technical support, including R5F104LEGFB#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104LEGFB#30 requirements.
6.How does Aetrix verify that R5F104LEGFB#30 is sourced from the original manufacturer or authorized distributors?
All R5F104LEGFB#30 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 R5F104LEGFB#30 meets industry standards.
7.What is the process for return or replacement of R5F104LEGFB#30?
All R5F104LEGFB#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104LEGFB#30, 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 R5F104LEGFB#30 part is unused and in its original packaging.
Return procedure for R5F104LEGFB#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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