Renesas R5F1217AANA#20

Overview

R5F1217AANA#20 from Renesas Electronics is a 24-pin HWQFN-packaged 16-bit RL78/G16 microcontroller with 16 KB code flash, 2 KB RAM, and integrated capacitive touch sensing (15-channel CTSU). It operates from 2.4–5.5 V, supports ultra-low-power STOP/HALT modes, and delivers real-time clock, 16-bit timers (8 channels), 10-bit ADC (11-channel), and multiple serial interfaces for embedded control in consumer-grade applications (−40 to +85°C).

For engineers reviewing the R5F1217AANA#20 datasheet, R5F1217AANA#20 pinout, R5F1217AANA#20 application, or R5F1217AANA#20 equivalent, key selection criteria include its 24-pin HWQFN (4 × 4 mm, 0.5-mm pitch) footprint, 16 KB flash/2 KB RAM memory configuration, A-grade temperature range, and integrated CTSU for touch-enabled UIs in space-constrained consumer devices.

Technical Context

The R5F1217AANA#20 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.0625 μs (@16 MHz high-speed on-chip oscillator) to 30.5 μs (@32.768 kHz subsystem clock). Its memory subsystem includes 16 KB code flash (1 KB block size), 1 KB data flash (512 B blocks, 1M rewrite cycles), and 2 KB SRAM.

Peripheral integration includes an 11-channel 10-bit ADC with internal reference (0.815 V), dual comparators, RTC with 99-year calendar and alarm, 8× 16-bit timer channels, simplified SPI/I²C/UART (up to 3 channels each), and a dedicated 15-channel capacitive touch sensing unit (CTSU) supporting self- and mutual-capacitance configurations - all operating within the −40 to +85°C ambient range.

Key Specifications

Pinout & Package

24-pin plastic HWQFN package (4.0 × 4.0 mm, 0.5-mm pitch) with exposed die pad requiring connection to a non-electrical PCB copper pour for thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1217CGNA#20, the R5F1217AANA#20 trades industrial temperature rating and double flash capacity for lower cost and consumer qualification; versus R5F1214AANA#20, it adds RTC, 8 more I/O pins, and 3 additional analog channels - enabling richer HMI and sensor fusion in same-footprint upgrades.

Availability

R5F1217AANA#20 is available at Aetrix Electronics and suitable for home appliance control panels, smart thermostats, wireless remotes, and consumer IoT sensor hubs requiring stable component supply across production lifecycles.

Supply support for R5F1217AANA#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 automotive, industrial, and consumer markets.

The RL78/G16 product line delivers true low-power performance (61 µA/MHz) with integrated capacitive touch sensing, targeting cost-sensitive, battery-operated consumer electronics requiring rich HMI in minimal form factors.

FAQ

What is the maximum operating frequency and instruction timing of the R5F1217AANA#20?

The R5F1217AANA#20 features a high-speed on-chip oscillator configurable up to 16 MHz, delivering a minimum instruction execution time of 0.0625 μs under those conditions. Its RL78 CPU core uses a 3-stage pipeline CISC architecture optimized for deterministic real-time response in low-power applications.

Does the R5F1217AANA#20 support in-system programming and debug without external tools?

Yes, the R5F1217AANA#20 includes an on-chip debug function accessible via TOOL0, TOOLRxD, and TOOLTxD pins. It supports full in-circuit debugging and self-programming of code flash memory without requiring external debug probes or boot ROM swaps.

How many analog input channels and what resolution does the ADC in R5F1217AANA#20 provide?

The R5F1217AANA#20 integrates an 8/10-bit resolution A/D converter supporting up to 11 analog input channels (ANI0–ANI10). It operates across the full 2.4–5.5 V supply range and includes selectable internal reference voltage (0.815 V TYP.) for ratiometric measurements.

What touch sensing capabilities does the R5F1217AANA#20 offer, and how many keys can it support?

The R5F1217AANA#20 includes a dedicated 15-channel capacitive touch sensing unit (CTSU) supporting both self-capacitance (up to 15 single-touch keys) and mutual-capacitance (matrix configuration supporting up to 16 keys) - all implemented without external components.

Is the R5F1217AANA#20 pin-compatible with other RL78/G16 variants like R5F1217CGNA#20 or R5F1217CMNA#20?

Yes, the R5F1217AANA#20 shares identical 24-pin HWQFN packaging, pinout, and peripheral mapping with R5F1217CGNA#20 and R5F1217CMNA#20. Differences are limited to temperature grade (A: −40 to +85°C), flash size (16 KB), and data flash (1 KB) - enabling drop-in replacement where qualification permits.