Renesas R7F100GAG3CSP#AA0

Overview

R7F100GAG3CSP#AA0 from Renesas is an RL78/G23 8-bit microcontroller with 96 KB code flash, 12 KB RAM, and 8 KB data flash, operating from 1.6–5.5 V. It delivers ultra-low power consumption (41 µA/MHz active, 210 nA data retention), integrates capacitive touch sensing (CTSU2L), a 12-bit ADC (26 channels), dual DACs, RTC, and multiple serial interfaces including UARTA, IICA, and SAU - deployed in industrial human-machine interface modules requiring long battery life and robust touch control.

For engineers reviewing the R7F100GAG3CSP#AA0 datasheet, R7F100GAG3CSP#AA0 pinout, R7F100GAG3CSP#AA0 application, or R7F100GAG3CSP#AA0 equivalent, key selection considerations include its 30-pin LSSOP package, -40°C to +105°C industrial temperature grade, 30.5 µs minimum instruction time at 32.768 kHz, SNOOZE mode sequencer for autonomous low-power sensing, and CTSU2L support for up to 32 self-capacitance keys.

Technical Context

The RL78/G23 core implements a CISC architecture with 3-stage pipeline and configurable instruction timing - enabling high-speed execution (0.03125 µs @ 32 MHz) or ultra-low-power operation (30.5 µs @ 32.768 kHz). Its SNOOZE mode sequencer (SMS) executes up to 32 predefined commands without CPU wake-up, supporting intermittent sensor polling and touch scanning while maintaining 210 nA data retention current.

Peripheral integration includes a 26-channel 12-bit ADC with internal 1.48 V reference and temperature sensor, dual 8-bit DACs with real-time output, two comparators with selectable internal/external references, and a logic/event link controller (ELCL) for hardware-triggered peripheral chaining - all managed via the Data Transfer Controller (DTC) and interrupt-driven activation sources.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), industrial-grade (C), tray packaging (#AA0).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R7F100GBG3CSP#AA0, this part trades memory capacity for lower BOM cost and smaller footprint; compared with R7F100GAG2DSP#AA0, it provides guaranteed operation at +105°C - essential for enclosed industrial enclosures or motor-drive proximity.

Availability

R7F100GAG3CSP#AA0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, and programmable power monitors requiring stable component supply, long-term lifecycle assurance, and industrial temperature qualification.

Supply support for R7F100GAG3CSP#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.

The RL78/G23 product line targets ultra-low-power embedded control applications demanding high integration, robust touch sensing, and long-life battery operation - optimized for cost-sensitive industrial and appliance designs.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R7F100GAG3CSP#AA0?

The R7F100GAG3CSP#AA0 operates up to 32 MHz using its high-speed on-chip oscillator (±1.0% accuracy), drawing 41 µA per MHz at VDD = 3.3 V and TA = 25°C. At 32.768 kHz subsystem clock, minimum instruction time extends to 30.5 µs, enabling ultra-low-power RTC and touch-scan operations with sub-µA average current.

Does the R7F100GAG3CSP#AA0 support in-system programming and secure firmware updates?

Yes, the R7F100GAG3CSP#AA0 supports full in-system programming via on-chip debug (TOOL0 pin) and includes flash security features: block erase/write prohibition, boot swapping, and flash shield window. These mechanisms prevent unauthorized read-out and enable authenticated firmware updates without external programmers.

How many analog input channels does the R7F100GAG3CSP#AA0 ADC support, and what reference options are available?

The R7F100GAG3CSP#AA0 integrates a 12-bit successive-approximation ADC with up to 26 analog input channels. Reference options include external VREFP/VREFM pins, internal 1.48 V bandgap reference, and D/A converter outputs - allowing flexible scaling for precision sensor measurements across varying supply voltages.

Can the R7F100GAG3CSP#AA0 drive capacitive touch buttons directly without external components?

Yes, the integrated CTSU2L unit in the R7F100GAG3CSP#AA0 supports self-capacitance touch sensing on up to 32 pins with no external RC networks required. It operates from 1.8 V to 5.5 V, includes automatic noise cancellation, and delivers stable key detection even under varying humidity or ESD stress - validated per IEC 61000-4-2 Level 4.

What serial communication interfaces are available on the R7F100GAG3CSP#AA0, and how many instances of each?

The R7F100GAG3CSP#AA0 provides UARTA (up to 6 channels), IICA (up to 10 channels), and SAU (SPI/I²C/UART modes, up to 8 channels). Specifically, it supports 3 UARTA channels, 4 IICA channels, and 3 SAU channels - with flexible pin remapping via PIOR registers to optimize PCB layout for mixed-interface systems.