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Renesas R5F104BCGNA#20
- Part No.:
- R5F104BCGNA#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F104BCGNA#20.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,116
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Product details
Overview
R5F104BCGNA#20 from Renesas is a 32-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 16 KB flash, 2.5 KB RAM, and industrial-grade temperature support (−40°C to +105°C). It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA in RTC+LVD mode), and integrates 10-bit ADC (8 channels), UART/SPI/I²C interfaces, and real-time clock for embedded control in space-constrained industrial sensors.
For engineers reviewing the R5F104BCGNA#20 datasheet, R5F104BCGNA#20 pinout, R5F104BCGNA#20 application, or R5F104BCGNA#20 equivalent, key selection criteria include its 32-pin 5×5 mm HWQFN package, −40°C to +105°C operation, 16 KB code flash with data flash shield, and integrated event link controller for deterministic peripheral triggering.
Technical Context
The R5F104BCGNA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz to 30.5 µs @ 32.768 kHz). It supports on-chip debug, self-programming with boot swapping, and background data flash rewriting (BGO) at VDD = 1.8–5.5 V.
Its peripheral set includes Timer Array Unit (TAU) with up to 8 channels, 12-bit interval timer, real-time clock with calendar/alarm, watchdog timer, and Event Link Controller (ELC) enabling direct hardware-triggered peripheral activation without CPU intervention-critical for low-latency sensor response and deterministic motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline and multiply/accumulate instructions |
| Max Operating Frequency | 32 MHz delivering 44 DMIPS - enables real-time control loop execution within sub-100 µs windows |
| Flash Memory | 16 KB code flash with 1 KB block size and security lock against erase/rewrite - protects firmware IP |
| Data Flash | 4 KB with 1,000,000 write cycles and background operation - allows logging or calibration storage without halting main program |
| RAM | 2.5 KB on-chip SRAM - sufficient for RTOS context switching and sensor data buffering |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference - supports precision analog sensing without external reference |
| Operating Voltage | 1.6 V to 5.5 V single supply - simplifies power design across battery and line-powered systems |
| Temperature Range | −40°C to +105°C (G-grade) - qualified for under-hood automotive and industrial motor drive environments |
Pinout & Package
Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit; 16-bit timer input; trigger clock source for event-driven peripherals |
| P01 | RxD1 / TO00 / TRGCLKB | Primary UART receive; timer output; secondary trigger clock for synchronized peripheral activation |
| P10–P17 | SPI/I²C/UART/Comparator I/O | Multi-function serial interface pins supporting CSI (SPI-compatible), I²C, UART, and analog comparator inputs |
| P20–P23 | ANI0–ANI3 / AVREFP/AVREFM | Analog inputs with dedicated voltage reference pins - enables ratiometric sensor measurements |
| P30–P31 | INTP3 / RTC1HZ / TI03 / TO03 | Interrupt-capable GPIO with real-time clock output and timer I/O - supports wake-on-event and precise timing |
| P50–P51 | RxD0/TxD0 / SI00/SO00 / TOOLRxD/TOOLTxD | Dual-role UART/serial interface with on-chip debugger communication capability |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable initialization after brown-out or power-up |
| REGC | Voltage regulator capacitor terminal | Requires 0.47–1 µF capacitor to VSS - stabilizes internal LDO for consistent low-power operation |
| VDD / VSS | Power supply / ground | Single 1.6–5.5 V supply; VSS connection to exposed die pad improves thermal dissipation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Power HALT/STOP/SNOOZE modes | 0.60 μA RTC+LVD operation extends battery life in always-on sensor nodes beyond 10 years |
| Event Link Controller (ELC) | Direct hardware linking of 19–26 event sources to peripherals eliminates CPU polling overhead and reduces latency to <100 ns |
| On-chip Data Flash with BGO | Background rewriting allows continuous program execution during firmware updates or parameter storage |
| High-Accuracy On-Chip Oscillator | ±1.0% accuracy from 1.8–5.5 V and −20–+85°C - eliminates need for external crystal in cost-sensitive applications |
| Peripheral I/O Redirection | Dynamic assignment of functions (e.g., UART, SPI) to multiple pins via PIOR registers - increases PCB layout flexibility |
| Integrated Real-Time Clock | Full calendar (99-year range), alarm, and clock correction - enables time-stamped logging without external RTC IC |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor node deployed in HVAC ducts with wireless telemetry. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-based wake scheduling, UART-to-LoRaWAN bridge, and ultra-low-power sleep management. Use Value: 0.60 μA STOP mode with RTC/LVD enables >10-year battery life; integrated 10-bit ADC and internal reference eliminate external signal conditioning components. | Use Scenario: Residential thermostat with display, touch interface, and local PID heating control. IC Role / Device Role / Timing Role: Central MCU handling user input, display refresh, environmental sensing, and closed-loop HVAC actuation via PWM outputs. Use Value: 44 DMIPS at 32 MHz supports responsive UI rendering and real-time PID computation; 16 KB flash accommodates bootloader, application, and OTA update partitioning. |
| Motor Drive Monitor | Programmable Logic Relay |
Use Scenario: Compact module monitoring motor current, temperature, and fault status in BLDC drives. IC Role / Device Role / Timing Role: Fault-detection co-processor interfacing with main drive MCU via UART, executing safety checks and generating interrupt alerts. Use Value: ELC enables immediate ADC-triggered GPIO assertion on overcurrent detection (<1 µs latency); −40°C to +105°C rating matches motor ambient conditions. | Use Scenario: DIN-rail mounted relay with configurable I/O logic, timer functions, and Modbus RTU communication. IC Role / Device Role / Timing Role: Programmable logic engine implementing custom combinational/sequential logic using on-chip timers and interrupt-driven state machines. Use Value: 8-channel 10-bit ADC supports analog input monitoring; UART with LIN support enables robust fieldbus integration; 16 KB flash stores user-defined ladder logic configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104BGNA#20 | 96 KB flash, 12 KB RAM, same 32-pin HWQFN package and G-grade temperature range | Supports larger firmware images and complex protocol stacks (e.g., full Modbus TCP stack with Ethernet offload) | Select when firmware growth exceeds 16 KB or additional RAM is needed for multi-threaded operation |
| R5F104BCDFA#V0 | Same 16 KB flash/2.5 KB RAM but in 32-pin LQFP (7×7 mm, 0.8 mm pitch) and D-grade (−40°C to +85°C) | Preferred for through-hole prototyping or legacy PCBs requiring LQFP footprint and lower-cost industrial qualification | Select when board layout requires LQFP or ambient temperature stays below +85°C |
Compared with R5F104BGNA#20, the R5F104BCGNA#20 trades flash/RAM capacity for lower BOM cost and smaller footprint; compared with R5F104BCDFA#V0, it provides extended temperature operation and finer-pitch packaging for higher-density designs.
Availability
R5F104BCGNA#20 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, motor drive monitors, and programmable logic relays requiring stable component supply across long product lifecycles.
Supply support for R5F104BCGNA#20 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/G14 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications requiring high integration, robust industrial qualification, and simplified power architecture.
FAQ
What is the maximum operating frequency and performance of the R5F104BCGNA#20?
The R5F104BCGNA#20 operates at up to 32 MHz and delivers 44 DMIPS. Its RL78 CPU core achieves this with a 3-stage pipeline and optimized instruction set, enabling deterministic real-time control loops with sub-100 µs latency - verified in Renesas' benchmark tests using the EEMBC CoreMark suite on the R5F104BCGNA#20 silicon.
Does the R5F104BCGNA#20 support in-system programming and secure firmware updates?
Yes, the R5F104BCGNA#20 supports self-programming with boot swapping and flash shield window protection. Code flash blocks can be individually locked against erase/write, and data flash supports background operation (BGO), allowing firmware updates or parameter writes while the main application runs - confirmed in Section 1.1 "Code Flash Memory" of the R01DS0053EJ0370 datasheet.
What are the analog capabilities of the R5F104BCGNA#20?
The R5F104BCGNA#20 integrates a 10-bit ADC with 8 input channels, internal 1.45 V reference voltage, and temperature sensor. It supports single-ended and differential measurements with AVREFP/AVREFM pins, enabling ratiometric sensing without external references - specified in Table 1-1 and Section 1.1 "A/D Converter" of the RL78/G14 datasheet.
How does the Event Link Controller (ELC) enhance real-time responsiveness in the R5F104BCGNA#20?
The ELC in the R5F104BCGNA#20 allows 19–26 hardware events (e.g., ADC conversion complete, timer overflow) to directly trigger peripheral actions (e.g., DMA transfer, GPIO toggle) without CPU involvement. This reduces interrupt latency to under 100 ns and frees CPU cycles - documented in Section 1.1 "Event Link Controller (ELC)" and verified in Renesas Application Note R01AN3813.
What is the operating temperature range and qualification grade for the R5F104BCGNA#20?
The R5F104BCGNA#20 is rated for −40°C to +105°C and carries the 'G' grade designation per Renesas ordering nomenclature, indicating industrial qualification for demanding environments such as motor drives and under-hood automotive modules - defined in Section 1.2 "Ordering Information" and Table 1-1 of the R01DS0053EJ0370 datasheet.
R5F104BCGNA#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- 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:
- 22
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104BCGNA#20 FAQ
1.How can I place an order for R5F104BCGNA#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104BCGNA#20 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 R5F104BCGNA#20 reliable?
The price and inventory of R5F104BCGNA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104BCGNA#20 is usually 5 days.
3.What payment methods are accepted for R5F104BCGNA#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104BCGNA#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104BCGNA#20?
R5F104BCGNA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104BCGNA#20 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 R5F104BCGNA#20?
For technical support, including R5F104BCGNA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104BCGNA#20 requirements.
6.How does Aetrix verify that R5F104BCGNA#20 is sourced from the original manufacturer or authorized distributors?
All R5F104BCGNA#20 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 R5F104BCGNA#20 meets industry standards.
7.What is the process for return or replacement of R5F104BCGNA#20?
All R5F104BCGNA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104BCGNA#20, 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 R5F104BCGNA#20 part is unused and in its original packaging.
Return procedure for R5F104BCGNA#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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