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Renesas R7F102G4C3CNP#UA0
- Part No.:
- R7F102G4C3CNP#UA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
R7F102G4C3CNP#UA0.pdf
- Description:
- 16BIT MCU RL78/G22 32K 16HWQFN -
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
R7F102G4C3CNP#UA0 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 1.6–5.5 V. It delivers true low-power performance (37.5 µA/MHz active, 200 nA STOP mode), integrates capacitive touch sensing for up to 29 keys, and supports UART, I²C, SPI, RTC, and 10-bit ADC - ideal for battery-powered industrial HMI and sensor nodes.
For engineers reviewing the R7F102G4C3CNP#UA0 datasheet, R7F102G4C3CNP#UA0 pinout, R7F102G4C3CNP#UA0 application, or R7F102G4C3CNP#UA0 equivalent, key selection criteria include its 16-pin HWQFN (3 × 3 mm, 0.5 mm pitch) footprint, -40°C to +85°C industrial temperature grade, 32 KB flash capacity, integrated CTSU2La capacitive touch unit, and support for SNOOZE mode sequencer for ultra-low-power event-driven wake-up without CPU involvement.
Technical Context
The R7F102G4C3CNP#UA0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling configurable instruction execution times from 0.03125 µs (32 MHz high-speed oscillator) to 30.5 µs (32.768 kHz subsystem clock). Its power management includes HALT, STOP, and SNOOZE modes, with hardware-assisted wake-up via interrupt sources including capacitive touch events and timer alarms.
Peripheral integration centers on low-power operation: the CTSU2La unit operates at VDD = 1.8–5.5 V using self- or mutual-capacitance methods; the Data Transfer Controller (DTC) enables background flash rewriting during program execution; and the SNOOZE Mode Sequencer (SMS) executes up to 32 preconfigured commands-including comparisons and calculations-without CPU, RAM, or flash activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/divide/accumulate instructions |
| Flash Memory | 32 KB code flash (2 KB block size) with flash shield window and block erase prohibition |
| RAM & Data Flash | 4 KB on-chip RAM; 2 KB data flash supporting background operation (BGO) and 1M rewrite cycles |
| Operating Voltage | 1.6 V to 5.5 V single-supply operation with POR and dual voltage detectors (LVD0/LVD1) |
| Power Consumption | 37.5 µA/MHz active current; 200 nA STOP mode current; SNOOZE mode enables event-triggered wake-up without CPU |
| Capacitive Touch | CTSU2La unit supporting up to 29 keys via self-capacitance or matrix-based mutual-capacitance sensing |
| Timers & RTC | Eight 16-bit timer channels; 32-bit interval timer; RTC with alarm, 1-second-to-99-year counting, and clock correction |
Pinout & Package
Package: HWQFN-16 (3 × 3 mm, 0.50-mm pitch), exposed die pad, industrial-grade (-40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P122 / X2 / XT2 / EXCLK / EXCLKS | Crystal/oscillator input | Supports external crystal (XT1/XT2), external clock input, or clock output for system synchronization |
| P121 / X1 / XT1 | Crystal/oscillator input | Primary crystal connection for main system clock; pairs with P122 for 32.768 kHz or higher-frequency crystals |
| REGC | Regulator capacitor terminal | Must be connected to VSS via 0.47–1 µF capacitor to stabilize internal voltage regulator |
| VSS | Ground reference | Primary digital ground; exposed die pad must be connected to VSS for thermal and electrical integrity |
| VDD | Power supply | Single 1.6–5.5 V supply powering core, peripherals, and I/O; supports direct battery connection |
| RESET | Active-low reset input | Hardware reset assertion; internally pulled up; compatible with external reset ICs or push-button circuits |
| P137 / INTP0 | Interrupt input | Dedicated external interrupt pin (INTP0) usable for wake-up from STOP/SNOOZE modes |
| P30 / INTP3 / TSCAP / RTC1HZ / SCL11 | Multiplexed I/O | Combines capacitive touch sensor input (TSCAP), RTC 1-Hz output, I²C clock (SCL11), and interrupt (INTP3) |
| P17 / TI02 / TO02 / TS18 / SDA11 | Multiplexed I/O | Supports timer I/O (TI02/TO02), capacitive touch (TS18), and I²C data (SDA11) on same pin |
| P12 / SO00 / TxD0 / TOOLTxD / TS13 | Multiplexed I/O | Serial output (SO00), UART transmit (TxD0), debug output (TOOLTxD), and touch sense (TS13) |
| P11 / SI00 / RxD0 / TOOLRxD / SDA00 / TS12 | Multiplexed I/O | Serial input (SI00), UART receive (RxD0), debug input (TOOLRxD), I²C data (SDA00), and touch sense (TS12) |
| P10 / SCK00 / SCL00 / TS11 | Multiplexed I/O | SPI clock (SCK00), I²C clock (SCL00), and capacitive touch (TS11) - no dedicated SPI MISO/MOSI pins in 16-pin variant |
| P22 / ANI2 / TS20 | Analog/touch input | ADC channel 2 input (ANI2) and capacitive touch channel TS20 - shared analog front-end |
| P21 / ANI1 / AVREFM | Analog reference | ADC channel 1 input (ANI1) and negative reference (AVREFM) for differential ADC measurements |
| P20 / ANI0 / AVREFP | Analog reference | ADC channel 0 input (ANI0) and positive reference (AVREFP); enables internal 1.48 V reference usage |
| P40 / TOOL0 | Debug interface | On-chip debugging communication pin (TOOL0); used with Renesas E2 emulator for programming and trace |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 200 nA quiescent current enables multi-year battery life in always-on sensor applications |
| SNOOZE Mode Sequencer (SMS) | Executes 32-step sequences (e.g., ADC sampling → comparison → conditional wake-up) autonomously, eliminating CPU wake-ups |
| Integrated CTSU2La | Hardware-accelerated capacitive touch sensing with self/mutual capacitance support - no external components required for basic touch buttons |
| Background Data Flash Operation | Enables firmware updates or parameter logging while application code runs from flash - critical for field-upgradable devices |
| Configurable High-Speed Oscillator | ±1.0% accuracy across 1–32 MHz range (1.8–5.5 V, -20–+85°C) eliminates need for external crystal in cost-sensitive designs |
| Real-time Clock with Alarm | Full calendar (seconds to years), alarm interrupt, and software-adjustable clock correction - suitable for time-stamped logging without external RTC |
Applications
| Smart Thermostat Interface | Industrial Sensor Node |
|---|---|
|
Use Scenario: Battery-powered wall-mounted thermostat with capacitive touch buttons and ambient temperature/humidity sensing. IC Role / Device Role / Timing Role: Main controller executing touch decoding, sensor polling, display update, and wireless transmission scheduling. Use Value: 200 nA STOP mode extends 2xAA battery life beyond 5 years; CTSU2La enables reliable touch detection through glass overlay without additional ICs. |
Use Scenario: DIN-rail mounted environmental monitor collecting temperature, humidity, and vibration data for predictive maintenance. IC Role / Device Role / Timing Role: Edge-processing node performing local threshold checks, timestamping, and buffered transmission over UART/I²C to gateway. Use Value: SNOOZE Mode Sequencer triggers periodic ADC sampling and comparison without CPU wake-up, reducing average current by >40% vs. polling-based implementation. |
| Portable Medical Device | Home Appliance Control Panel |
|
Use Scenario: Handheld pulse oximeter requiring low-power operation, analog signal conditioning, and touch-based UI navigation. IC Role / Device Role / Timing Role: Signal acquisition controller managing photodiode ADC reads, LED drive timing, and capacitive button response. Use Value: Integrated 10-bit ADC with internal 1.48 V reference and AVREFP/AVREFM inputs enable ratiometric measurement stability without external references. |
Use Scenario: Microwave oven control board with touch-sensitive keypad, buzzer feedback, and safety interlock monitoring. IC Role / Device Role / Timing Role: System supervisor handling key scan, buzzer tone generation (PCLBUZ0/PCLBUZ1), door switch interrupts, and real-time cooking countdown. Use Value: On-chip RTC with alarm and 1-Hz output drives precise cooking timers; PCLBUZ0/PCLBUZ1 pins generate audible tones directly without external driver circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G4E3CNP#UA0 | Same package and pinout; 64 KB code flash (vs. 32 KB), identical peripherals and power specs | Required where firmware complexity exceeds 32 KB or future-proofing for feature expansion is needed | Select when larger code space is confirmed necessary; otherwise R7F102G4C3CNP#UA0 offers optimal cost/power balance |
| STM32L011K4T6 | ARM Cortex-M0+, 16 KB flash, 2 KB RAM, 32-pin LQFP only; no integrated CTSU; different peripheral set (no SMS or BGO) | Requires external touch controller and lacks autonomous low-power sequencing capability | Consider only if ARM toolchain alignment outweighs loss of integrated touch and SNOOZE features |
Compared with R7F102G4E3CNP#UA0, the R7F102G4C3CNP#UA0 trades flash capacity for lower cost and identical low-power behavior, while STM32L011K4T6 requires architectural and peripheral redesign to replicate CTSU2La and SMS functionality - making R7F102G4C3CNP#UA0 the most direct fit for touch-enabled, battery-constrained embedded control.
Availability
R7F102G4C3CNP#UA0 is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, smart home controls, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for R7F102G4C3CNP#UA0 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 management solutions for industrial, automotive, and IoT applications.
The RL78/G22 product line targets cost-sensitive, ultra-low-power embedded systems requiring integrated capacitive touch, robust real-time control, and seamless firmware update capability - with R7F102G4C3CNP#UA0 optimized for compact 16-pin implementations.
FAQ
What is the maximum operating frequency and associated current consumption of the R7F102G4C3CNP#UA0?
The R7F102G4C3CNP#UA0 supports up to 32 MHz operation using the high-speed on-chip oscillator with ±1.0% accuracy. At this frequency and VDD = 3.3 V, typical active current is 37.5 µA per MHz - resulting in ~1.2 mA total at full speed. This value scales linearly with clock frequency, enabling precise power budgeting across operational modes.
Does the R7F102G4C3CNP#UA0 support in-system programming and debugging?
Yes, the R7F102G4C3CNP#UA0 supports full in-system programming and debugging via the single-pin TOOL0 interface (P40) using Renesas E2 or E2 Lite emulators. On-chip debugging includes breakpoints, watchpoints, and memory inspection without requiring additional debug headers or SWD/JTAG pins.
How many capacitive touch channels does the R7F102G4C3CNP#UA0 support, and what configuration options exist?
The R7F102G4C3CNP#UA0 integrates the CTSU2La unit supporting up to 29 capacitive touch channels. It operates in self-capacitance mode (one pin per key) or mutual-capacitance matrix mode (transmit/receive pin pairs), with all touch pins multiplexed onto standard GPIOs - including TS11 through TS20 and TSCAP on P30 - requiring no external components.
What are the key differences between the R7F102G4C3CNP#UA0 and R7F102G4E3CNP#UA0?
The R7F102G4C3CNP#UA0 and R7F102G4E3CNP#UA0 share identical package (HWQFN-16), pinout, peripherals, power characteristics, and temperature grade. The sole difference is code flash capacity: 32 KB in R7F102G4C3CNP#UA0 versus 64 KB in R7F102G4E3CNP#UA0. All other electrical and functional specifications match exactly.
Can the R7F102G4C3CNP#UA0 operate from a 1.8 V supply, and what peripherals remain functional at that voltage?
Yes, the R7F102G4C3CNP#UA0 operates across 1.6–5.5 V. At 1.8 V, the high-speed oscillator (up to 16 MHz), CTSU2La (self-capacitance mode), 10-bit ADC (with internal 1.48 V reference), RTC, and all low-voltage I/Os remain fully functional. UART and I²C interfaces also operate reliably, though maximum baud rates are reduced per the electrical characteristics table.
R7F102G4C3CNP#UA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- RL78/G22
- Packaging:
- Tray
- Product Status:
- Active
- 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#UA0 FAQ
1.How can I place an order for R7F102G4C3CNP#UA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G4C3CNP#UA0 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#UA0 reliable?
The price and inventory of R7F102G4C3CNP#UA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G4C3CNP#UA0 is usually 5 days.
3.What payment methods are accepted for R7F102G4C3CNP#UA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G4C3CNP#UA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G4C3CNP#UA0?
R7F102G4C3CNP#UA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G4C3CNP#UA0 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#UA0?
For technical support, including R7F102G4C3CNP#UA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G4C3CNP#UA0 requirements.
6.How does Aetrix verify that R7F102G4C3CNP#UA0 is sourced from the original manufacturer or authorized distributors?
All R7F102G4C3CNP#UA0 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#UA0 meets industry standards.
7.What is the process for return or replacement of R7F102G4C3CNP#UA0?
All R7F102G4C3CNP#UA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G4C3CNP#UA0, 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#UA0 part is unused and in its original packaging.
Return procedure for R7F102G4C3CNP#UA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G4C3CNP#UA0 Tags
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