Renesas R5F1217AGNA#20

Overview

R5F1217AGNA#20 from Renesas Electronics is a 24-pin RL78/G16 16-bit microcontroller with 32 KB code flash, 2 KB RAM, and industrial-grade operation up to +125°C. It integrates an 8/10-bit ADC (11-channel), capacitive touch sensing unit (15-channel), real-time clock with calendar, and dual serial interfaces including I²C and simplified SPI/UART. It targets embedded control in motor drives, industrial HMI panels, and sensor nodes requiring low-power operation and robust touch interface.

For engineers reviewing the R5F1217AGNA#20 datasheet, R5F1217AGNA#20 pinout, R5F1217AGNA#20 application, or R5F1217AGNA#20 equivalent, key selection considerations include its HWQFN-24 package with exposed thermal pad, 24 MHz max CPU speed via high-speed on-chip oscillator, 61 µA/MHz active current at 125°C, and support for background-independent data flash rewrites at VDD = 2.4–5.5 V.

Technical Context

The R5F1217AGNA#20 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.0625 µs (16 MHz) to 30.5 µs (32.768 kHz). Its memory subsystem includes 32 KB code flash (1 KB block erase), 1 KB data flash (512 B blocks, 1M rewrite cycles), and 2 KB SRAM.

Peripheral integration includes eight 16-bit timers, one 12-bit interval timer, watchdog timer, RTC2 with alarm and correction, two comparators, and a dedicated capacitive touch sensing unit supporting self- and mutual-capacitance configurations. Communication is handled by up to three simplified SPI/UART channels and one full I²C interface.

Key Specifications

Pinout & Package

Package: 24-pin HWQFN (4.0 × 4.0 mm, 0.5-mm pitch) with exposed die pad - requires PCB thermal pad connection for thermal management and electrical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F1217CMNA#20, the R5F1217AGNA#20 offers identical functionality at industrial-grade temperature limits (−40°C to +105°C), while R5F1214AGNA#20 reduces footprint and cost at the expense of I/O and memory - making the R5F1217AGNA#20 optimal for mid-complexity industrial HMI and motor control where thermal margin and peripheral headroom matter.

Availability

R5F1217AGNA#20 is available at Aetrix Electronics and suitable for industrial motor control, smart home HMI panels, automotive body electronics, and battery-powered sensor nodes requiring stable component supply across long production lifecycles.

Supply support for R5F1217AGNA#20 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/G16 product line delivers ultra-low-power 16-bit MCUs with integrated capacitive touch and real-time clock, designed specifically for cost-sensitive, energy-efficient embedded systems in harsh environments.

FAQ

What is the maximum operating frequency of the R5F1217AGNA#20?

The R5F1217AGNA#20 supports a maximum CPU operating frequency of 16 MHz using its high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.0625 µs, enabling responsive real-time control. External crystal oscillators up to 20 MHz are also supported via the X1/X2 pins for applications requiring higher precision timing.

Does the R5F1217AGNA#20 support in-system programming without a bootloader?

Yes, the R5F1217AGNA#20 supports self-programming of both code and data flash memory via on-chip debug circuitry. It does not require a boot swap function or external programmer - firmware updates can be performed directly through the built-in debug interface (SWD) or via UART-based custom loader routines implemented in application code.

What is the operating temperature range for the R5F1217AGNA#20?

The R5F1217AGNA#20 is rated for industrial operation from −40°C to +105°C (G-grade). This specification is confirmed in the official Renesas datasheet R01DS0431EJ0130 and applies to all functional blocks including the CPU core, flash memory, ADC, and CTSU - ensuring reliability in factory automation and power electronics environments.

How many capacitive touch channels does the R5F1217AGNA#20 support?

The R5F1217AGNA#20 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 15 self-capacitance channels or 16 mutual-capacitance keys using matrix configuration. All 15 CTSU channels are accessible on dedicated pins (e.g., TS00–TS07, TS08–TS14), and the unit includes hardware-based noise cancellation and auto-calibration features.

Is the R5F1217AGNA#20 pin-compatible with other RL78/G16 variants in HWQFN-24 packages?

Yes, the R5F1217AGNA#20 shares identical pinout and package dimensions (24-pin HWQFN, 4.0 × 4.0 mm) with all other RL78/G16 devices in the same package family, including R5F1217CMNA#20 and R5F1217CANA#20. Pin functions are fully consistent across these variants, enabling drop-in replacement based on memory size or temperature grade without PCB redesign.