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Renesas R7F102G8C2DLA#AC0
- Part No.:
- R7F102G8C2DLA#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 25-WFLGA
- Datasheet:
-
R7F102G8C2DLA#AC0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
R7F102G8C2DLA#AC0 from Renesas is a 25-pin WFLGA-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, RTC, capacitive touch sensing (up to 29 keys), and supports UART, I²C, and SPI interfaces for battery-powered HMI and sensor node applications.
For engineers reviewing the R7F102G8C2DLA#AC0 datasheet, R7F102G8C2DLA#AC0 pinout, R7F102G8C2DLA#AC0 application, or R7F102G8C2DLA#AC0 equivalent, this page provides verified technical context, package mapping, functional pin definitions, low-power design trade-offs, and validated alternative options for industrial-grade embedded control.
Technical Context
The RL78/G22 core implements a CISC architecture with 3-stage pipeline and configurable instruction timing-0.03125 µs at 32 MHz (high-speed on-chip oscillator) or 30.5 µs at 32.768 kHz (subsystem clock). It supports multiply/divide/accumulate instructions and 1 MB address space with four banks of 8×8-bit general-purpose registers.
Power management includes HALT, STOP, and SNOOZE modes; the latter enables autonomous low-power sequencing using 21 command types across 32 processes without CPU, flash, or RAM activation. Peripheral integration includes Event Link Controller (20 event signals), Data Transfer Controller (DTC), and Capacitive Touch Sensing Unit (CTSU2La) supporting self- and mutual-capacitance configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline and configurable instruction timing |
| Operating Voltage | 1.6–5.5 V - enables direct interface with 1.8/2.5/3.0 V peripherals and single-supply battery operation |
| Power Consumption | 37.5 µA/MHz active, 200 nA STOP mode - reduces battery drain in always-on sensor nodes |
| Memory | 32 KB code flash + 2 KB data flash + 4 KB RAM - supports firmware updates and parameter logging without external storage |
| ADC | 10-bit resolution, 10 analog inputs, internal 1.48 V reference - eliminates need for external voltage reference in precision sensing |
| Capacitive Touch | Up to 29 keys via CTSU2La - enables robust touch UI on compact PCBs with minimal external components |
| Timers | Eight 16-bit TAU channels, 32-bit interval timer, RTC with alarm and correction - supports precise timekeeping and multi-rate PWM generation |
Pinout & Package
Package: 25-pin WFLGA (3 × 3 mm, 0.50-mm pitch), industrial temperature grade (−40 to +105°C), tray packaging (#AC0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (P60) | I²C Clock (SCLA0) | Dedicated hardware I²C clock line for reliable communication with sensors and PMICs |
| A2 (REGC) | Regulator Decoupling | Connects to VSS via 0.47–1 µF capacitor to stabilize internal LDO output |
| A3 (P121) | Crystal Input (XT1) | Primary crystal oscillator input for high-accuracy real-time clock and system timing |
| A4 (P122) | Crystal Output (XT2) | Secondary crystal oscillator terminal enabling 32.768 kHz or MHz-range crystal operation |
| A5 (P40) | Debug Interface (TOOL0) | On-chip debug port for programming and real-time trace without dedicated JTAG header |
| B1 (P61) | I²C Data (SDAA0) | Dedicated hardware I²C data line supporting standard/fast-mode transfers up to 400 kHz |
| B2 (VSS) | Ground Reference | Primary digital ground plane connection; must be low-impedance for noise-sensitive analog functions |
| B3 (VDD) | Power Supply | Main supply input for entire MCU; decoupling required per Renesas layout guidelines |
| B4 (P137) | Interrupt Input (INTP0) | Edge-triggered external interrupt pin for wake-up from STOP/SNOOZE modes |
| B5 (RESET) | Reset Input | Active-low reset signal with internal pull-up; accepts external reset IC or manual pushbutton |
Key Features
| Feature | Design Value |
|---|---|
| SNOOZE Mode Sequencer (SMS) | Executes 32-step autonomous sequences (e.g., periodic ADC sampling + touch scan + RTC check) without CPU wake-up, reducing average current by >90% vs. polling |
| Capacitive Touch Sensing Unit (CTSU2La) | Supports both self-capacitance (29 keys) and mutual-capacitance (matrix) configurations with built-in noise cancellation, eliminating external RC networks |
| Data Flash with Background Operation (BGO) | Enables concurrent code execution from flash while rewriting 2 KB data flash - critical for over-the-air firmware updates and nonvolatile parameter storage |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining (e.g., ADC conversion completion → DTC transfer → DMA to RAM) removes CPU overhead and jitter from time-critical signal chains |
| High-Accuracy On-Chip Oscillators | ±1.0% tolerance across 1.8–5.5 V and −40 to +105°C - eliminates external crystal for UART/LIN timing in cost-sensitive industrial controls |
Applications
| Smart Thermostat Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Compact wall-mounted HVAC controller with capacitive touch buttons, ambient temperature/humidity sensing, and wireless module interface. IC Role / Device Role / Timing Role: Main system controller managing touch UI, ADC acquisition, RTC-based scheduling, and UART communication to Wi-Fi/BLE module. Use Value: Ultra-low STOP current extends battery life beyond 5 years; integrated CTSU2La eliminates external touch controller IC and reduces BOM count by 3+ components. |
Use Scenario: DIN-rail mounted vibration/temperature monitor in factory automation, transmitting data via RS-485 or LoRaWAN gateway. IC Role / Device Role / Timing Role: Edge-processing MCU performing analog sensor conditioning, FFT preprocessing, and deterministic packet transmission timing via RTC-triggered interrupts. Use Value: SNOOZE mode sequencer autonomously samples accelerometer and thermistor every 100 ms without CPU intervention, cutting average power to <1 µA during idle periods. |
| Home Appliance Control Panel | Medical Wearable Monitor |
|
Use Scenario: Microwave oven or washing machine front panel with touch sliders, LED indicators, motor control, and safety interlock monitoring. IC Role / Device Role / Timing Role: Primary HMI controller handling capacitive touch decoding, buzzer feedback, relay/SSR drive timing, and LIN bus communication to main MCU. Use Value: 10-bit ADC with internal 1.48 V reference enables accurate thermistor readings without external voltage reference; 32 KB flash accommodates localized UI logic and safety firmware. |
Use Scenario: Portable pulse oximeter with optical sensor array, OLED display, and Bluetooth LE connectivity for patient vitals tracking. IC Role / Device Role / Timing Role: Low-power sensor hub managing photodiode ADC sampling, IR/Red LED timing, and BLE advertising interval synchronization via RTC alarm. Use Value: 200 nA STOP current allows >6-month operation on CR2032; integrated data flash stores calibration coefficients and usage logs without external EEPROM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G8E2DLA#AC0 | 64 KB code flash, same 25-pin WFLGA package and peripherals | Required for larger firmware images or dual-bank OTA updates | Select when firmware size exceeds 32 KB or secure boot with flash shield window is needed |
| R7F102G6C2DSP#HA0 | 20-pin LSSOP package, 32 KB flash, 1.6–5.5 V, −40 to +85°C | Consumer-grade ambient temperature range; lacks CTSU2La and some timers | Choose for cost-sensitive, non-touch consumer products where board space and temp range allow LSSOP |
Compared with R7F102G8C2DLA#AC0, the R7F102G8E2DLA#AC0 offers double flash capacity for complex firmware but shares identical low-power behavior and pinout, while the R7F102G6C2DSP#HA0 trades industrial temperature rating and capacitive touch capability for lower cost and simpler packaging in less demanding environments.
Availability
R7F102G8C2DLA#AC0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home control panels, medical wearables, and battery-powered HMI applications requiring stable component supply across extended product lifecycles.
Supply support for R7F102G8C2DLA#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 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 ultra-low-power embedded control applications requiring high integration, robust capacitive touch, and long battery life in compact industrial and medical devices.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R7F102G8C2DLA#AC0?
R7F102G8C2DLA#AC0 operates up to 32 MHz using its high-speed on-chip oscillator, supported across the full 1.6–5.5 V supply range. At 32 MHz, minimum instruction execution time is 0.03125 µs. The device maintains functionality down to 1.6 V, enabling direct use with single-cell Li-ion or two-cell alkaline batteries without external regulators.
Does R7F102G8C2DLA#AC0 support hardware-accelerated capacitive touch sensing, and how many keys can it handle?
Yes, R7F102G8C2DLA#AC0 integrates the CTSU2La unit supporting up to 29 capacitive touch keys. It implements both self-capacitance (single-pin per key) and mutual-capacitance (transmit/receive pin matrix) methods with built-in noise cancellation and auto-calibration, eliminating external RC networks and dedicated touch controller ICs.
What debug interface does R7F102G8C2DLA#AC0 provide, and is external hardware required?
R7F102G8C2DLA#AC0 uses the on-chip FINE debug interface accessible via P40 (TOOL0) and RESET pins. No external debug probe is required for basic programming and debugging; Renesas E2 studio and CS+ tools support SWD-style communication over these two pins, reducing PCB footprint and BOM cost versus traditional JTAG headers.
Can R7F102G8C2DLA#AC0 perform flash memory writes while executing code from flash?
Yes, R7F102G8C2DLA#AC0 supports background operation (BGO) for its 2 KB data flash memory. Code execution continues from program memory during data flash erase/write cycles, enabling seamless firmware parameter updates, logging, and over-the-air configuration changes without system interruption.
What is the RTC accuracy specification and calibration capability of R7F102G8C2DLA#AC0?
R7F102G8C2DLA#AC0 includes a full-featured RTC with second-to-99-year counting, alarm interrupt, and programmable clock correction. When driven by a 32.768 kHz crystal, typical accuracy is ±20 ppm (±1.7 sec/day); the RTC supports software-adjustable correction values to compensate for crystal drift across temperature and aging.
R7F102G8C2DLA#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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F102G8C2DLA#AC0 FAQ
1.How can I place an order for R7F102G8C2DLA#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G8C2DLA#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 R7F102G8C2DLA#AC0 reliable?
The price and inventory of R7F102G8C2DLA#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G8C2DLA#AC0 is usually 5 days.
3.What payment methods are accepted for R7F102G8C2DLA#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G8C2DLA#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G8C2DLA#AC0?
R7F102G8C2DLA#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G8C2DLA#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 R7F102G8C2DLA#AC0?
For technical support, including R7F102G8C2DLA#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G8C2DLA#AC0 requirements.
6.How does Aetrix verify that R7F102G8C2DLA#AC0 is sourced from the original manufacturer or authorized distributors?
All R7F102G8C2DLA#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 R7F102G8C2DLA#AC0 meets industry standards.
7.What is the process for return or replacement of R7F102G8C2DLA#AC0?
All R7F102G8C2DLA#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G8C2DLA#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 R7F102G8C2DLA#AC0 part is unused and in its original packaging.
Return procedure for R7F102G8C2DLA#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G8C2DLA#AC0 Tags
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