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Renesas R7F102G8C3CLA#AC0
- Part No.:
- R7F102G8C3CLA#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 25-WFLGA
- Datasheet:
-
R7F102G8C3CLA#AC0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:1,721
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Product details
Overview
R7F102G8C3CLA#AC0 from Renesas is a 25-pin WFLGA-packaged RL78/G22 16-bit microcontroller with 32 KB code flash, 4 KB RAM, and integrated capacitive touch sensing for up to 29 keys. It operates from 1.6 V to 5.5 V, delivers 37.5 µA/MHz active current and 200 nA stop current, and targets ultra-low-power human-machine interface applications such as appliance control panels and smart sensors.
For engineers reviewing the R7F102G8C3CLA#AC0 datasheet, R7F102G8C3CLA#AC0 pinout, R7F102G8C3CLA#AC0 application, or R7F102G8C3CLA#AC0 equivalent, key selection criteria include its 25-pin WFLGA (3 × 3 mm) footprint, 32 KB flash/4 KB RAM configuration, CTSU2La-based touch support, RTC and multiple UART/I²C/SPI interfaces, and industrial-grade −40°C to +105°C operation.
Technical Context
The R7F102G8C3CLA#AC0 implements the RL78 CPU core with a 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz high-speed mode) to 30.5 µs (32.768 kHz ultra-low-speed mode). Its SNOOZE mode sequencer enables autonomous low-power sensor polling without CPU wake-up.
It integrates a 10-bit A/D converter with up to 18 analog inputs, a 2 KB data flash with 1M-cycle endurance and background operation, and an event link controller (ELC) that routes 20 peripheral events without CPU intervention-critical for deterministic real-time response in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline and multiply/divide instructions |
| Flash / RAM | 32 KB code flash + 2 KB data flash + 4 KB SRAM - supports secure boot swapping and BGO |
| Operating Voltage | 1.6 V to 5.5 V - enables direct battery operation (e.g., 2×AA, Li-ion, or 3.3 V/5 V rails) |
| Power Consumption | 37.5 µA/MHz active, 200 nA STOP mode - extends battery life in always-on HMI nodes |
| Capacitive Sensing | CTSU2La unit supporting up to 29 self- or mutual-capacitance keys - no external components required |
| Temperature Range | −40°C to +105°C - qualified for industrial ambient environments per 3C grade |
| Package | 25-pin WFLGA, 3.0 × 3.0 mm, 0.50-mm pitch - ultra-compact footprint for space-constrained PCBs |
Pinout & Package
25-pin WFLGA (3.0 × 3.0 mm, 0.50-mm pitch), bottom-side pad exposed for thermal and electrical grounding. Requires REGC capacitor (0.47–1 µF) to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | SCLA0 | I²C clock line for secondary I²C interface - supports multi-master communication |
| A2 | REGC | Regulator capacitor terminal - must connect to VSS via 0.47–1 µF ceramic capacitor |
| A3 | X1/XT1 | Primary crystal oscillator input - supports 32.768 kHz watch crystal or external clock |
| A4 | X2/EXCLK/XT2/EXCLKS | Crystal output / external clock input - enables precise timing or low-jitter system clock |
| A5 | TOOL0 | On-chip debug interface pin - used for programming and real-time trace via E2 emulator |
| B1 | SDAA0 | I²C data line for secondary I²C interface - complements A1 for isolated sensor bus |
| B2 | VSS | Digital ground reference - connects to PCB ground plane and REGC capacitor |
| B3 | VDD | Main power supply - powers core, peripherals, and CTSU; decoupling required near pin |
| B4 | INTP0 | External interrupt input - edge-triggered wakeup source from deep sleep modes |
| B5 | RESET | Active-low reset input - initiates hardware reset and clears internal state |
| C1 | PCLBUZ0 / TI03 / TO03 / INTP4 / TS01 | Programmable buzzer output with timer capture/compare - enables audible feedback without external driver |
| C2 | TSCAP / RTC1HZ / SCL11 / SCK11 / INTP3 | Touch sensor reference capacitor input - also serves as RTC 1-Hz output and I²C/SPI clock |
| C3 | ANI0 / AVREFP | Analog input channel 0 with positive voltage reference - used for ADC measurements and touch calibration |
| C4 | ANI17 / TS26 / TI00 / TxD1 | Shared analog input, touch electrode, timer input, and UART1 transmit - multiplexed for flexible I/O use |
| C5 | ANI16 / TS27 / TO00 / RxD1 | Shared analog input, touch electrode, timer output, and UART1 receive - enables dual-role HMI/sensing pins |
| D1 | TS19 / P130 | Capacitive touch electrode 19 - expands touch matrix beyond base 18-channel limit |
| D2 | TI02 / TO02 / TS18 / SO11 / SDA11 | Timer input/output with touch sensing and SPI/I²C data - supports synchronized sensor acquisition |
| D3 | SO00 / TxD0 / TOOLTxD / TS13 | Primary SPI/I²C output and UART0 transmit - used for host communication and touch data streaming |
| D4 | ANI1 / AVREFM | Analog input channel 1 with negative voltage reference - enables differential ADC measurements |
| D5 | ANI2 / TS20 / P22 | Analog input channel 2 and touch electrode 20 - supports simultaneous analog sensing and touch detection |
| E1 | TS10 / ANI18 / P147 | Touch electrode 10 and analog input 18 - extends CTSU channel count to 29 electrodes |
| E2 | SI11 / SDA11 / INTP1 / TS00 / P50 | Secondary SPI/I²C data input and touch electrode 0 - enables daisy-chained sensor interfaces |
| E3 | SI00 / RxD0 / TOOLRxD / SDA00 / TS12 / P11 | Primary serial receive, debug RX, and touch electrode 12 - consolidates debug and HMI on one pin |
| E4 | SCK00 / SCL00 / TS11 / P10 | Primary SPI/I²C clock and touch electrode 11 - synchronizes communication and touch scanning |
| E5 | ANI18 / TS10 / P147 | Duplicate mapping of touch electrode 10 - confirms functional assignment per datasheet Table 1-5 |
Key Features
| Feature | Design Value |
|---|---|
| SNOOZE Mode Sequencer (SMS) | Executes up to 32 autonomous operations (e.g., ADC sampling, CTSU scan, comparison) without CPU wake-up - reduces average system power by >90% during idle |
| Capacitive Touch Unit (CTSU2La) | Supports 29 self-capacitance keys or mutual-capacitance matrices with built-in noise rejection - eliminates need for external touch controllers or shielding |
| Data Flash with Background Operation | 2 KB data flash allows firmware to log sensor data or store calibration parameters while executing from code flash - enables robust field updates and data retention |
| Event Link Controller (ELC) | Hardware routing of 20 peripheral events (e.g., ADC end-of-conversion → DMA trigger) - removes software latency and CPU overhead in time-critical paths |
| Real-Time Clock with Alarm & Correction | RTC counts seconds to 99 years, supports alarm interrupts and ±1 ppm clock correction - provides accurate timekeeping for scheduling and timestamping |
| Low-Voltage Detection (LVD0/LVD1) | Dual independent voltage detectors monitor VDD at programmable thresholds - ensures safe shutdown or brown-out recovery before flash corruption occurs |
Applications
| Smart Appliance Control Panel | Industrial Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled front panel for HVAC, washing machine, or oven with LED indicators and buzzer feedback. IC Role / Device Role / Timing Role: Primary MCU managing capacitive touch decoding, real-time buzzer tone generation, LED PWM control, and UART communication to main controller. Use Value: Single-chip integration of CTSU2La, PCLBUZ, RTC, and UART eliminates 4–5 discrete components, reducing BOM cost and PCB area by >30%. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and air quality with periodic wireless upload. IC Role / Device Role / Timing Role: Ultra-low-power system controller using STOP mode between 10-second CTSU+ADC cycles, with RTC-driven wakeup and ELC-automated data logging. Use Value: 200 nA STOP current and SNOOZE sequencer enable 5+ year battery life on a single CR2032 cell in intermittent-scan operation. |
| Medical Patient Monitor Interface | Automotive Cabin Control Module |
|
Use Scenario: Touch-sensitive bedside monitor interface with ECG waveform display, alarm silencing, and parameter adjustment. IC Role / Device Role / Timing Role: Safety-assisted HMI processor handling touch gesture recognition, audio alerts via PCLBUZ, and isolated I²C communication to main SoC. Use Value: −40°C to +105°C rating and LVD monitoring ensure reliable operation in clinical environments with wide ambient swings and power instability. |
Use Scenario: Compact center console control module for seat/mirror adjustment, climate fan speed, and lighting dimming in entry-level vehicles. IC Role / Device Role / Timing Role: Dedicated body electronics MCU interfacing with LIN bus (via UARTA), driving PWM fans, and scanning capacitive sliders/keys. Use Value: Integrated LIN-capable UARTA, 16-bit TAU timers for precise PWM, and CTSU reduce need for external transceivers and touch ICs - simplifies ASIL-B-compliant design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G8E3CLA#AC0 | Same package and pinout, but with 64 KB code flash and 2 KB data flash instead of 32 KB/2 KB | Required when firmware exceeds 32 KB or needs larger data logging buffer; identical peripheral set and power profile | Select if future firmware growth or field-upgrade capability demands extra flash margin |
| R7F102G6C3CSP#HA0 | 20-pin LSSOP package, 32 KB flash, same RL78/G22 core and CTSU2La, but lacks SNOOZE sequencer and has fewer analog/touch channels | Suitable for simpler touch interfaces (≤18 keys) where board space allows larger package and lower integration is acceptable | Choose only when WFLGA footprint is unnecessary and cost sensitivity outweighs ultra-low-power advantages |
Compared with R7F102G8C3CLA#AC0, the R7F102G8E3CLA#AC0 offers double flash capacity without trade-offs in size or power, while the R7F102G6C3CSP#HA0 sacrifices SNOOZE autonomy and touch scalability for lower unit cost in less demanding applications.
Availability
R7F102G8C3CLA#AC0 is available at Aetrix Electronics and suitable for industrial HMI, battery-powered sensor nodes, and medical device interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R7F102G8C3CLA#AC0 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 industrial, automotive, and IoT markets.
The RL78/G22 product line delivers true low-power performance for human-machine interface and sensor-edge applications, combining capacitive touch, real-time control, and ultra-low standby consumption in compact packages.
FAQ
What is the maximum operating frequency and corresponding current consumption of the R7F102G8C3CLA#AC0?
The R7F102G8C3CLA#AC0 operates up to 32 MHz using its high-speed on-chip oscillator with ±1.0% accuracy. At this frequency and VDD = 3.3 V, typical active current is 37.5 µA/MHz - resulting in ~1.2 mA total at full speed. This value is measured under standard conditions per the RL78/G22 datasheet Rev.1.20.
Does the R7F102G8C3CLA#AC0 support hardware debugging, and what interface is used?
Yes, the R7F102G8C3CLA#AC0 supports full hardware debugging via the on-chip E2 emulator interface using TOOL0 (pin A5), TOOLRxD (pin E3), and TOOLTxD (pin D3). It enables breakpoints, real-time trace, flash programming, and memory inspection without requiring external JTAG adapters.
How many capacitive touch channels does the R7F102G8C3CLA#AC0 support, and what methods are available?
The R7F102G8C3CLA#AC0 supports up to 29 capacitive touch sensing channels via its CTSU2La unit. It implements both self-capacitance (one pin per key) and mutual-capacitance (transmit/receive pin pairs) methods, with dedicated TSxx pins mapped across its 25-pin WFLGA layout per Table 1-5 of the datasheet.
What are the key differences between the R7F102G8C3CLA#AC0 and R7F102G8E3CLA#AC0?
The R7F102G8C3CLA#AC0 and R7F102G8E3CLA#AC0 share identical package, pinout, peripherals, and power characteristics. The sole difference is flash memory: R7F102G8C3CLA#AC0 has 32 KB code flash, while R7F102G8E3CLA#AC0 has 64 KB. Both include 2 KB data flash and 4 KB RAM.
Is the R7F102G8C3CLA#AC0 qualified for industrial temperature range, and what grade does it carry?
Yes, the R7F102G8C3CLA#AC0 is rated for −40°C to +105°C ambient operation and carries the "3C" industrial qualification grade per Renesas' part numbering convention - confirmed by the "3" in position 13 of the ordering code and explicitly stated in Section 1.2 of R01DS0424EJ0120.
R7F102G8C3CLA#AC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 25-WFLGA
- 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:
- 19
- 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 6x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F102G8C3CLA#AC0 FAQ
1.How can I place an order for R7F102G8C3CLA#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G8C3CLA#AC0 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 R7F102G8C3CLA#AC0 reliable?
The price and inventory of R7F102G8C3CLA#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G8C3CLA#AC0 is usually 5 days.
3.What payment methods are accepted for R7F102G8C3CLA#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G8C3CLA#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G8C3CLA#AC0?
R7F102G8C3CLA#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G8C3CLA#AC0 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 R7F102G8C3CLA#AC0?
For technical support, including R7F102G8C3CLA#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G8C3CLA#AC0 requirements.
6.How does Aetrix verify that R7F102G8C3CLA#AC0 is sourced from the original manufacturer or authorized distributors?
All R7F102G8C3CLA#AC0 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 R7F102G8C3CLA#AC0 meets industry standards.
7.What is the process for return or replacement of R7F102G8C3CLA#AC0?
All R7F102G8C3CLA#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G8C3CLA#AC0, 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 R7F102G8C3CLA#AC0 part is unused and in its original packaging.
Return procedure for R7F102G8C3CLA#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G8C3CLA#AC0 Tags
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