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Renesas R7F102G4C3CNP#AA0
- Part No.:
- R7F102G4C3CNP#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
R7F102G4C3CNP#AA0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:3,134
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Product details
Overview
R7F102G4C3CNP#AA0 from Renesas is a 16-pin HWQFN-packaged RL78/G22 16-bit microcontroller with 32 KB code flash, 4 KB RAM, and 2 KB data flash, operating from 1.6 to 5.5 V. It delivers ultra-low power consumption (37.5 µA/MHz active, 200 nA STOP mode), integrates 10-channel 10-bit ADC, 29-capacitive-touch support, RTC, and UART/SPI/I²C interfaces - deployed in battery-powered industrial sensor nodes and smart home control panels.
For engineers reviewing the R7F102G4C3CNP#AA0 datasheet, R7F102G4C3CNP#AA0 pinout, R7F102G4C3CNP#AA0 application, or R7F102G4C3CNP#AA0 equivalent, key selection factors include its 16-pin HWQFN (3 × 3 mm) footprint, 32 KB flash/4 KB RAM memory configuration, STOP-mode current spec, CTSU2La capacitive touch unit capability, and compatibility with Renesas E2 studio and CS+ development tools.
Technical Context
The R7F102G4C3CNP#AA0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting configurable instruction execution times from 0.03125 µs (32 MHz high-speed oscillator) to 30.5 µs (32.768 kHz subsystem clock). It features SNOOZE mode sequencer (SMS) for autonomous low-power peripheral sequencing without CPU wake-up.
Its peripheral set includes 8× 16-bit timers, 1× 32-bit interval timer, 1× RTC with alarm and correction, 1× watchdog timer, and flexible serial interfaces: up to 5 CSI channels, 4 UARTA channels (LIN-capable), and 6 I²C/Simplified I²C channels - all mapped across its 12 GPIO pins with programmable pull-ups and open-drain options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response in resource-constrained embedded control. |
| Flash Memory | 32 KB code flash + 2 KB data flash; supports background operation (BGO) and 1M write cycles for robust firmware/data logging. |
| RAM | 4 KB on-chip RAM; sufficient for real-time task stacks, sensor buffers, and communication protocol handling without external memory. |
| Operating Voltage | 1.6 V to 5.5 V; allows direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V peripherals without level shifters. |
| Power Modes | HALT (0.29 µA), STOP (200 nA), SNOOZE; enables multi-year battery life in always-on sensing applications. |
| Capacitive Touch | CTSU2La unit supporting up to 29 keys via self- or mutual-capacitance; eliminates mechanical buttons in HMI designs. |
| ADC | 10-bit resolution, 10 input channels, internal 1.48 V reference; enables precision analog signal acquisition from sensors and transducers. |
Pinout & Package
Package: 16-pin HWQFN (3 × 3 mm, 0.50-mm pitch), exposed die pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P122 / X2 / XT2 / EXCLK / EXCLKS | Crystal oscillator input | Supports external 32.768 kHz crystal for RTC accuracy or high-frequency crystal up to 20 MHz; enables precise timing-critical functions. |
| P121 / X1 / XT1 | Crystal oscillator output | Completes crystal oscillator circuit; required for stable clock generation when using external resonator. |
| REGC | Regulator bypass capacitor terminal | Mandatory 0.47–1 µF capacitor to VSS ensures stable internal voltage regulation and noise immunity. |
| VSS | Ground reference | Primary digital ground; must be connected to system GND plane with low-impedance path for signal integrity. |
| VDD | Power supply input | Single 1.6–5.5 V supply powers entire IC; no separate analog/digital rails required. |
| RESET | Active-low reset input | Asynchronous hardware reset; pulled high internally; external pull-up recommended for robust startup. |
| P137 / INTP0 | External interrupt input | Dedicated edge-triggered interrupt pin for wake-up or event capture; supports low-power STOP mode exit. |
| P30 / INTP3 / TSCAP / RTC1HZ / SCL11 | Multi-function pin | Configurable as touch sensor capacitor input, RTC 1 Hz output, or I²C clock line - enables shared pin optimization in space-constrained layouts. |
| P17 / TI02 / TO02 / TS18 / SDA11 | Timer I/O + touch + I²C data | Combines timer input/output, capacitive touch channel, and I²C data line - reduces pin count while maintaining functionality. |
| P12 / SO00 / TxD0 / TOOLTxD / TS13 | Serial output + touch | Provides UART transmit, SPI output, debug TX, and touch sensing - simplifies firmware update and HMI integration. |
| P11 / SI00 / RxD0 / TOOLRxD / SDA00 / TS12 | Serial input + touch | Enables UART receive, SPI input, debug RX, I²C data, and touch sensing - consolidates communication and sensing paths. |
| P10 / SCK00 / SCL00 / TS11 | Clock + touch | Serves as SPI clock, I²C clock, or capacitive touch channel - supports multiple interface protocols on one pin. |
| P22 / ANI2 / TS20 | Analog input + touch | Simultaneous use as ADC channel and touch sensor input enables hybrid analog/touch sensing in compact designs. |
| P21 / ANI1 / AVREFM | Analog reference input | Accepts external or internal reference for ADC; AVREFM sets negative reference point for differential measurements. |
| P20 / ANI0 / AVREFP | Analog input + reference | Primary ADC input with selectable internal 1.48 V reference or external positive reference for calibrated sensing. |
| P40 / TOOL0 | Debug interface pin | Required for on-chip debugging and programming via Renesas E2 emulator; connects to SWD/JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power STOP mode | 200 nA current draw enables >10-year battery life in coin-cell-powered IoT endpoints. |
| SNOOZE mode sequencer (SMS) | Executes up to 32 autonomous operations (e.g., ADC sampling → compare → GPIO toggle) without CPU involvement, reducing active time by >90%. |
| Capacitive touch unit (CTSU2La) | Supports both self- and mutual-capacitance methods on same pins, enabling robust touch sliders, wheels, or matrix keypads with minimal BOM cost. |
| Data flash with BGO | Allows concurrent program execution and non-volatile data writes - critical for field-upgradable firmware and persistent configuration storage. |
| Flexible clock system | Three independent oscillators (high/middle/low speed) with ±1.0% accuracy at 32 MHz enable dynamic frequency scaling for optimal performance vs. power trade-offs. |
| Peripheral I/O redirection | Runtime remapping of UART/SPI/I²C functions to alternate pins simplifies PCB layout and avoids routing congestion in dense designs. |
Applications
| Smart Thermostat Control | Industrial Temperature Sensor Node |
|---|---|
Use Scenario: Wall-mounted HVAC controller with capacitive touch interface, ambient temperature/humidity sensing, and wireless connectivity. IC Role / Device Role / Timing Role: Main system controller managing touch UI, ADC-based sensor acquisition, RTC-scheduled fan control, and UART-based communication to Wi-Fi module. Use Value: 32 KB flash hosts full UI stack and communication protocol; 29-key CTSU2La replaces mechanical buttons; 200 nA STOP mode extends 2xAA battery life to 5+ years. | Use Scenario: DIN-rail mounted environmental monitor in factory automation, measuring temperature, vibration, and power quality. IC Role / Device Role / Timing Role: Edge-processing node performing local sensor fusion, time-stamped data logging to data flash, and periodic UART/RS-485 reporting. Use Value: 4 KB RAM buffers multi-sensor streams; BGO data flash enables uninterrupted logging during firmware updates; -40 to +85°C rating ensures reliability in harsh enclosures. |
| Wireless Remote Control | Medical Patient Monitor Button Panel |
Use Scenario: Battery-powered IR/RF remote for medical imaging equipment with tactile feedback and low-power standby. IC Role / Device Role / Timing Role: Touch controller and RF interface manager, waking only on button press or scheduled health-check transmission. Use Value: SNOOZE mode sequences touch scan → debounce → RF transmit without CPU wake-up; 1.6 V operation extends CR2032 life beyond 36 months. | Use Scenario: Front-panel interface for bedside vital signs monitor requiring ESD-hardened, fail-safe touch controls. IC Role / Device Role / Timing Role: Dedicated HMI processor handling capacitive touch, buzzer alerts (PCLBUZ0), and isolated UART to main CPU. Use Value: CTSU2La's built-in noise rejection handles EMI in hospital environments; 32 KB flash stores redundant touch calibration profiles; RESET pin supports safe recovery from fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G4E3CNP#AA0 | Same package and pinout, but 64 KB code flash and 2 KB data flash instead of 32 KB/2 KB. | Better suited for applications requiring larger firmware (e.g., BLE stack + UI + diagnostics) or extended data logging. | Select when future firmware growth headroom or dual-bank flash for OTA updates is required. |
| RL78/G13 R5F100LEAFB#30 | Legacy RL78/G13 family; 32 KB flash, 4 KB RAM, but no CTSU2La, higher STOP current (320 nA), and no SNOOZE sequencer. | Limited to basic control tasks without advanced touch or ultra-low-power autonomous operation. | Choose only for legacy design migration where CTSU2La and sub-µA STOP are not needed. |
Compared with R7F102G4E3CNP#AA0, the R7F102G4C3CNP#AA0 trades flash capacity for lower cost and identical ultra-low-power performance; versus RL78/G13, it adds CTSU2La, 200 nA STOP mode, and SMS - delivering measurable BOM and battery-life advantages in modern touch-enabled edge devices.
Availability
R7F102G4C3CNP#AA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, medical HMI panels, and battery-powered remote controls requiring stable component supply and long-term lifecycle support.
Supply support for R7F102G4C3CNP#AA0 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G22 product line targets cost-sensitive, ultra-low-power embedded applications demanding integrated capacitive touch, rich analog peripherals, and seamless toolchain support - optimized for rapid development of intelligent edge devices.
FAQ
What is the maximum operating frequency of the R7F102G4C3CNP#AA0?
The R7F102G4C3CNP#AA0 supports a maximum operating frequency of 32 MHz using its high-speed on-chip oscillator, achieving a minimum instruction execution time of 0.03125 µs. External crystals up to 20 MHz are also supported via the P121/P122 pins for applications requiring higher clock accuracy than the internal oscillator provides.
Does the R7F102G4C3CNP#AA0 support in-system programming?
Yes, the R7F102G4C3CNP#AA0 supports in-system programming via its on-chip debugging interface using the P40/TOOL0 pin and SWD protocol. It also features self-programming capabilities with boot swapping and flash shield window protection, enabling secure firmware updates in the field without requiring external programmers.
How many capacitive touch channels does the R7F102G4C3CNP#AA0 support?
The R7F102G4C3CNP#AA0 integrates the CTSU2La capacitive touch unit supporting up to 29 touch channels. It operates in both self-capacitance mode (one pin per key) and mutual-capacitance mode (transmit/receive pin pairs), allowing flexible implementation of touch sliders, wheels, or matrix keypads within its 16-pin HWQFN footprint.
What is the purpose of the REGC pin on the R7F102G4C3CNP#AA0?
The REGC pin on the R7F102G4C3CNP#AA0 is the regulator bypass capacitor terminal. A 0.47–1 µF capacitor must be connected between REGC and VSS to stabilize the internal voltage regulator, ensuring reliable operation and noise immunity - especially critical during low-power modes and high-speed switching transitions.
Can the R7F102G4C3CNP#AA0 operate from a 1.8 V supply?
Yes, the R7F102G4C3CNP#AA0 is fully specified to operate from 1.6 V to 5.5 V, including 1.8 V. At 1.8 V, it maintains full functionality - including 32 KB flash access, 4 KB RAM operation, 10-bit ADC conversion, and CTSU2La touch sensing - making it ideal for single-cell Li-ion or two-cell alkaline battery systems.
R7F102G4C3CNP#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- RL78/G22
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 11
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 3x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F102G4C3CNP#AA0 FAQ
1.How can I place an order for R7F102G4C3CNP#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G4C3CNP#AA0 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 R7F102G4C3CNP#AA0 reliable?
The price and inventory of R7F102G4C3CNP#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G4C3CNP#AA0 is usually 5 days.
3.What payment methods are accepted for R7F102G4C3CNP#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G4C3CNP#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G4C3CNP#AA0?
R7F102G4C3CNP#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G4C3CNP#AA0 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 R7F102G4C3CNP#AA0?
For technical support, including R7F102G4C3CNP#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G4C3CNP#AA0 requirements.
6.How does Aetrix verify that R7F102G4C3CNP#AA0 is sourced from the original manufacturer or authorized distributors?
All R7F102G4C3CNP#AA0 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 R7F102G4C3CNP#AA0 meets industry standards.
7.What is the process for return or replacement of R7F102G4C3CNP#AA0?
All R7F102G4C3CNP#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G4C3CNP#AA0, 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 R7F102G4C3CNP#AA0 part is unused and in its original packaging.
Return procedure for R7F102G4C3CNP#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G4C3CNP#AA0 Tags
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