Renesas R5F1217CANA#40

Overview

R5F1217CANA#40 from Renesas Electronics is a 24-pin HWQFN-packaged 16-bit RL78/G16 microcontroller with 32 KB code flash, 2 KB RAM, and integrated capacitive touch sensing (15-channel CTSU), designed for low-power industrial HMI applications operating from −40°C to +125°C. It features an RL78 CPU core (3-stage pipeline), 8× 16-bit timers, 10-bit A/D converter (11-channel), real-time clock with calendar, and multiple serial interfaces including UART, simplified SPI (CSI), and I²C.

For engineers reviewing the R5F1217CANA#40 datasheet, R5F1217CANA#40 pinout, R5F1217CANA#40 application, or R5F1217CANA#40 equivalent, key selection considerations include its M-grade temperature rating (−40°C to +125°C), 24-pin HWQFN (4.0 × 4.0 mm, 0.5-mm pitch) package with exposed die pad, 32 KB flash/2 KB RAM memory configuration, and support for self-capacitance and mutual-capacitance touch sensing without external components.

Technical Context

The R5F1217CANA#40 implements the RL78 CPU core with CISC architecture and configurable instruction timing (0.0625 μs @ 16 MHz to 30.5 μs @ 32.768 kHz), enabling dynamic power/performance trade-offs. Its on-chip peripherals include a 12-bit interval timer, watchdog timer with dedicated low-speed oscillator, and real-time clock 2 with 99-year calendar and alarm function.

It integrates a 10-bit A/D converter with internal reference voltage (0.815 V TYP.), temperature sensor, and selectable analog inputs across 11 channels, alongside two comparator channels supporting high-/low-speed modes and internal/external reference selection - all synchronized with the CTSU for robust touch acquisition in noisy environments.

Key Specifications

Pinout & Package

24-pin HWQFN package (4.0 × 4.0 mm, 0.5-mm pitch) with exposed die pad requiring thermal connection to PCB ground plane per Renesas design guidelines (no electrical connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1217CMNA#40, the R5F1217CANA#40 offers identical hardware functionality but reflects Renesas' standard industrial flash endurance specification; versus R5F1216CANA#40, it adds four analog inputs, RTC2 calendar, and two additional CTSU channels - enabling richer HMI and time-aware edge intelligence.

Availability

R5F1217CANA#40 is available at Aetrix Electronics and suitable for industrial control panels, smart appliance interfaces, motor drive front-ends, energy metering terminals, and automotive cabin modules requiring stable component supply across extended temperature ranges.

Supply support for R5F1217CANA#40 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and IoT markets.

The RL78/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, thermally demanding HMI and sensor-node applications - integrating capacitive touch, precision analog, and robust communication interfaces in compact QFN packages.

FAQ

What is the maximum operating temperature of the R5F1217CANA#40?

The R5F1217CANA#40 is qualified for operation from −40°C to +125°C (M-grade industrial specification). This allows deployment in high-temperature environments such as near motors, power converters, or under-hood automotive locations where ambient heat exceeds 105°C. The device maintains full functionality-including CTSU accuracy and flash write reliability-across this full range.

Does the R5F1217CANA#40 support in-system programming via UART?

Yes, the R5F1217CANA#40 supports in-system programming using its built-in on-chip debug function and UART interface (TOOLTxD/TOOLRxD pins). Firmware updates can be performed without external programmers by leveraging the self-programming capability of its 32 KB code flash memory, provided the application reserves space for bootloader code and observes erase-before-write constraints.

How many capacitive touch channels does the R5F1217CANA#40 support, and what configurations are available?

The R5F1217CANA#40 integrates a 15-channel Capacitive Touch Sensing Unit (CTSU) supporting both self-capacitance (up to 15 independent keys) and mutual-capacitance (matrix configuration supporting up to 16 keys) methods. Electrode connections are made directly to designated pins (e.g., P02/TSCAP), with no external RC components required - simplifying layout and improving ESD robustness in consumer and industrial touch panels.

What serial communication interfaces are available on the R5F1217CANA#40?

The R5F1217CANA#40 provides three UART channels, up to three simplified SPI (CSI) channels, up to three simplified I²C channels, and one full I²C channel. These interfaces are multiplexed across GPIO pins (e.g., P00/P01 for UART, P06/P07 for I²C), allowing flexible routing. All serial peripherals support independent clock sources and operate concurrently without resource conflict.

Is the R5F1217CANA#40 pin-compatible with other RL78/G16 variants in the same package?

Yes, the R5F1217CANA#40 shares identical pinout and package (24-pin HWQFN) with all other RL78/G16 devices marked "ANA", including R5F1217AGNA#40 and R5F1217AMNA#40. Functionality differs only in memory configuration (32 KB flash), temperature grade (M), and flash endurance rating - making it a drop-in replacement for footprint-compatible variants during design reuse or qualification upgrades.