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Renesas R5F121BCGNA#60
- Part No.:
- R5F121BCGNA#60
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F121BCGNA#60.pdf
- Description:
- 16BIT MCU RL78/G16 32K 32HWQFN -
- Quantity:
- Payment:
- Shipping:
Inventory:4,964
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Product details
Overview
R5F121BCGNA#60 from Renesas Electronics is a 32-pin, 32 KB flash, 2 KB RAM RL78/G16 16-bit microcontroller in HWQFN-32 (5 × 5 mm, 0.5-mm pitch) package, operating from 2.4–5.5 V with industrial-grade temperature range (−40°C to +105°C), integrated capacitive touch sensing (15-channel CTSU), 10-bit A/D converter (11-channel), and real-time clock with calendar function - deployed in smart appliance control panels and industrial HMI modules.
For engineers reviewing the R5F121BCGNA#60 datasheet, R5F121BCGNA#60 pinout, R5F121BCGNA#60 application, or R5F121BCGNA#60 equivalent, key selection criteria include its 32-pin HWQFN thermal performance at +105°C, on-chip CTSU support for button/slider interfaces without external components, and dual serial interface capability (up to 3 CSI/SPI, 3 UART, 3 simplified I²C channels) for sensor hub and display bridge integration.
Technical Context
The R5F121BCGNA#60 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting variable instruction execution time from 0.0625 μs (@16 MHz high-speed on-chip oscillator) to 30.5 μs (@32.768 kHz subsystem clock). It integrates dedicated peripherals including a 99-year RTC with alarm and correction, 8-channel 16-bit timer array, and background operation-disabled data flash (1 KB, 1M rewrite cycles).
Its power management includes HALT and STOP low-power modes, selectable SPOR reset levels, and voltage monitoring across 2.4–5.5 V supply. The device supports peripheral I/O redirection via PIOR registers, enabling flexible pin assignment for CSI, UART, simplified I²C, and CTSU functions without hardware redesign.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash / RAM | 32 KB code flash (1 KB block size); 2 KB on-chip RAM |
| Operating Voltage | 2.4 V to 5.5 V - enables direct interface with 3.3 V and 5 V logic systems |
| Temp Range | −40°C to +105°C (G-grade) - qualified for industrial control environments |
| A/D Converter | 10-bit resolution, 11 analog input channels, internal reference (0.815 V) |
| Capacitive Touch | 15-channel CTSU supporting self- and mutual-capacitance configurations |
| RTC | Real-time clock with 99-year calendar, alarm, and clock correction function |
| Package | HWQFN-32 (5.0 × 5.0 mm, 0.5-mm pitch) with exposed die pad for thermal dissipation |
Pinout & Package
Package: HWQFN-32 (5.0 × 5.0 mm, 0.5-mm pitch), thermally enhanced with exposed die pad requiring PCB thermal pad connection (no electrical connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TOOLTxD / SO00 / TxD0 | UART0 transmit output; SPI0 serial output; supports tool programming and host communication |
| P01 | TOOLRxD / SI00 / RxD0 / ANI0 | UART0 receive input; SPI0 serial input; primary analog input channel 0 for sensor interfacing |
| P02 | PCLBUZ0 / ANI1 / VCOUT0 / TSCAP | Capacitive touch sensing input; analog input 1; buzzer output; voltage comparator output |
| P125 | RESET / INTP1 / INTP0 | Active-low reset input with interrupt capability; dual-function for system initialization and wake-up |
| VDD / VSS | Power supply / Ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; exposed die pad must be soldered to thermal pad |
| P41 | RTC1HZ / TS13 / TI03 / TO03 | RTC 1 Hz output; touch sensing channel 13; timer I/O for precise timing or PWM generation |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | 61 µA/MHz active current at TA = 125°C - extends battery life in portable industrial tools |
| On-chip debug | Full on-chip debug support without external emulator - reduces development cycle time and BOM cost |
| Self-programming flash | Code flash reprogramming in-application without boot swap - enables field firmware updates |
| Hardware CTSU | Dedicated capacitive touch sensing unit with 15 channels - eliminates need for external touch controller IC |
| Flexible serial interfaces | Up to 3 CSI (SPI-compatible), 3 UART, and 3 simplified I²C channels - simplifies multi-sensor connectivity |
| Integrated RTC | Calendar-mode RTC with alarm and correction - provides accurate timekeeping without external crystal or backup battery circuitry |
Applications
| Smart Appliance Control Panel | Industrial HMI Module |
|---|---|
|
Use Scenario: Touch-enabled front panel for washing machines, ovens, and HVAC controllers with LED indicators and buzzer feedback. IC Role / Device Role / Timing Role: Main system controller executing UI logic, managing CTSU inputs, driving buzzer (PCLBUZ0), and updating display via UART/CSI. Use Value: Single-chip solution replaces MCU + touch controller + RTC IC, reducing component count by ≥3 and PCB area by 35%. |
Use Scenario: Local operator interface for PLC-connected machinery with status LEDs, emergency stop monitoring, and parameter adjustment. IC Role / Device Role / Timing Role: Real-time coordinator of I/O scanning, touch response, RTC-stamped event logging, and RS-485/UART communication to master controller. Use Value: −40°C to +105°C rating ensures reliable operation in uncooled control cabinets; HALT mode cuts standby power to <1 µA. |
| Energy Meter User Interface | Medical Device Keypad |
|
Use Scenario: Tamper-resistant LCD-based interface for residential/utility energy meters with tariff switching and consumption history display. IC Role / Device Role / Timing Role: Secure UI processor handling encrypted button presses, RTC-based billing period tracking, and isolated UART communication to metrology IC. Use Value: On-chip flash shield window prevents unauthorized firmware access; 10-bit A/D monitors auxiliary analog sensors (e.g., temperature compensation). |
Use Scenario: Low-voltage, ESD-hardened keypad for infusion pumps and diagnostic equipment requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Safety-critical input handler with CTSU debouncing, watchdog timer supervision, and fail-safe reset assertion on touch timeout. Use Value: Internal reference voltage (0.815 V) and comparator enable precise threshold detection; G-grade temp range covers clinical ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F121BCMNA#60 | Same package and peripherals, but rated for −40°C to +125°C (M-grade) and 32 KB flash | Targeted at under-hood automotive or high-temp industrial enclosures exceeding +105°C | Select when ambient temperature exceeds +105°C; otherwise identical firmware and layout compatibility |
| R5F121BCGFP#70 | LQFP-32 (7 × 7 mm, 0.8-mm pitch) package; same G-grade temp, 32 KB flash, 2 KB RAM | Suitable for through-hole prototyping, manual rework, or legacy LQFP-based designs | Choose for easier hand-soldering or compatibility with existing LQFP footprints; larger footprint increases board area by ~96% |
Compared with R5F121BCMNA#60 and R5F121BCGFP#70, the R5F121BCGNA#60 offers optimal thermal performance per unit area for industrial HMI applications within −40°C to +105°C, while maintaining full peripheral and code compatibility - making it the preferred choice for space-constrained, thermally demanding deployments where LQFP rework or M-grade over-specification is unnecessary.
Availability
R5F121BCGNA#60 is available at Aetrix Electronics and suitable for smart appliance control panels, industrial HMI modules, and energy meter user interfaces requiring stable component supply, long-term lifecycle support, and consistent G-grade qualification.
Supply support for R5F121BCGNA#60 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 industrial, automotive, and IoT markets.
The RL78/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, thermally constrained human-machine interface applications - combining capacitive touch, RTC, and rich serial connectivity in compact packages.
FAQ
What is the maximum operating frequency and corresponding instruction execution time for the R5F121BCGNA#60?
The R5F121BCGNA#60 supports up to 16 MHz operation using its high-speed on-chip oscillator, achieving a minimum instruction execution time of 0.0625 μs. This timing is confirmed in the RL78/G16 datasheet Rev.1.30 Section 1.1 under "RL78 CPU core" specifications and applies directly to the R5F121BCGNA#60 as a member of the 32 KB flash, G-grade variant group.
Does the R5F121BCGNA#60 support background operation during data flash rewriting?
No, the R5F121BCGNA#60 does not support background operation (BGO) during data flash rewriting. As specified in the datasheet Section 1.1, instructions cannot be executed from code flash memory while data flash is being rewritten - requiring careful state management and interrupt masking during write sequences in the R5F121BCGNA#60 firmware.
How many capacitive touch sensing channels does the R5F121BCGNA#60 provide, and what configurations are supported?
The R5F121BCGNA#60 integrates a 15-channel Capacitive Touch Sensing Unit (CTSU) supporting both self-capacitance (up to 15 keys, one per pin) and mutual-capacitance (up to 16 keys in matrix configuration) modes. This capability is explicitly documented in Section 1.1 "Capacitive touch sensing unit (CTSUb)" of the R5F121BCGNA#60 datasheet Rev.1.30.
What is the package type and thermal pad requirement for the R5F121BCGNA#60?
The R5F121BCGNA#60 uses a 32-pin HWQFN package (5.0 × 5.0 mm, 0.5-mm pitch) with an exposed die pad. Per datasheet Section 1.3.5 and Remark 3, this pad must be soldered to a non-electrical plated PCB thermal pad to ensure proper heat dissipation and reliability - no electrical connection is required or recommended.
Can the R5F121BCGNA#60 operate with an external crystal, and which pins are designated for that function?
Yes, the R5F121BCGNA#60 supports external crystal oscillation via pins P121 (X1/XT1) and P122 (X2/XT2), as shown in the 32-pin HWQFN pin configuration (Section 1.3.5) and Table 1-6. These pins support crystal frequencies compatible with the RL78/G16's XT1/XT2 oscillator circuit, enabling precise timing for RTC or communication baud rate accuracy.
R5F121BCGNA#60 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- Series:
- RL78/G16
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- CSI, I2C, SPI, UART/USART
- Peripherals:
- Capacitive Touch, POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 29
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F121BCGNA#60 FAQ
1.How can I place an order for R5F121BCGNA#60 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F121BCGNA#60 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 R5F121BCGNA#60 reliable?
The price and inventory of R5F121BCGNA#60 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F121BCGNA#60 is usually 5 days.
3.What payment methods are accepted for R5F121BCGNA#60?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F121BCGNA#60 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F121BCGNA#60?
R5F121BCGNA#60 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F121BCGNA#60 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 R5F121BCGNA#60?
For technical support, including R5F121BCGNA#60 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F121BCGNA#60 requirements.
6.How does Aetrix verify that R5F121BCGNA#60 is sourced from the original manufacturer or authorized distributors?
All R5F121BCGNA#60 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 R5F121BCGNA#60 meets industry standards.
7.What is the process for return or replacement of R5F121BCGNA#60?
All R5F121BCGNA#60 units undergo pre-shipment inspection (PSI). If there is an issue with R5F121BCGNA#60, 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 R5F121BCGNA#60 part is unused and in its original packaging.
Return procedure for R5F121BCGNA#60:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F121BCGNA#60 Tags
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