Renesas R5F1217CANA#20

Overview

R5F1217CANA#20 from Renesas Electronics is a 24-pin HWQFN-packaged 32-bit RL78/G16 microcontroller with 32 KB code flash, 2 KB RAM, and integrated capacitive touch sensing (15-channel CTSU). It operates from 2.4–5.5 V, supports HALT/STOP low-power modes, and delivers 16 MHz max CPU speed using the high-speed on-chip oscillator - deployed in industrial human-machine interface modules requiring robust touch control and real-time sensor processing.

For engineers reviewing the R5F1217CANA#20 datasheet, R5F1217CANA#20 pinout, R5F1217CANA#20 application, or R5F1217CANA#20 equivalent, key selection criteria include its 24-pin HWQFN (4 × 4 mm, 0.5-mm pitch) package, 32 KB flash/2 KB RAM memory configuration, −40°C to +125°C industrial temperature grade (M), and native support for 10-bit A/D conversion, RTC, and simplified SPI/I²C/UART interfaces.

Technical Context

The R5F1217CANA#20 implements the RL78 CPU core - a CISC architecture with 3-stage pipeline and configurable instruction timing (0.0625 μs @ 16 MHz to 30.5 μs @ 32.768 kHz). It integrates a dedicated subsystem clock domain for ultra-low-power operation and includes a hardware BCD correction circuit for calendar arithmetic.

Its peripheral set centers on mixed-signal integration: dual voltage references (0.815 V internal, selectable external), 10-bit A/D converter with up to 11 analog inputs, two comparators with high/low-speed modes, and a full-featured capacitive touch sensing unit supporting both self- and mutual-capacitance configurations across 15 pins.

Key Specifications

Pinout & Package

Package: 24-pin HWQFN (4.0 × 4.0 mm, 0.5-mm pitch) with exposed die pad - requires thermal pad soldering to PCB ground plane for thermal management and EMI suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1217AANA#20, the R5F1217CANA#20 provides double flash capacity for feature-rich firmware; versus R5F121BCANA#20, it trades 8 GPIOs and one UART for smaller PCB area and lower component count in space-constrained HMI designs.

Availability

R5F1217CANA#20 is available at Aetrix Electronics and suitable for industrial control panels, smart appliance interfaces, and automotive cabin sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F1217CANA#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 32-bit MCUs optimized for cost-sensitive, space-constrained HMI and sensor-edge applications - combining capacitive touch, precision analog, and robust real-time control in compact packages.

FAQ

What is the maximum operating frequency of the R5F1217CANA#20?

The R5F1217CANA#20 achieves a maximum CPU operating frequency of 16 MHz using its high-speed on-chip oscillator. Instruction execution time scales from 0.0625 μs at 16 MHz to 30.5 μs at 32.768 kHz, enabling dynamic power/performance trade-offs. This specification is confirmed in the R01DS0431EJ0130 datasheet Section 1.1.

Does the R5F1217CANA#20 support external crystal oscillation?

Yes, the R5F1217CANA#20 supports external crystal oscillation via pins P121 (X1/XT1) and P122 (X2/XT2), enabling precise clock sourcing for applications requiring tighter timing accuracy than the ±1.5% on-chip oscillator provides. These pins are fully functional in the 24-pin HWQFN package per Table 1-5 of the datasheet.

How many analog input channels does the R5F1217CANA#20 provide?

The R5F1217CANA#20 provides 11 analog input channels (ANI0 through ANI10), accessible across multiple pins including P00–P07, P20–P23, and P41–P43. All channels support 10-bit A/D conversion with selectable internal (0.815 V) or external reference voltage, as specified in Section 1.1 "A/D converter" of the datasheet.

Is the R5F1217CANA#20 pin-compatible with other RL78/G16 variants in the same package?

Yes, the R5F1217CANA#20 shares identical pinout and electrical characteristics with other 24-pin HWQFN RL78/G16 devices (e.g., R5F1217AANA#20, R5F1217GANA#20), differing only in flash size, temperature grade, and factory-programmed options. Pin mapping and multiplexed functions are consistent per Table 1-5 in the R01DS0431EJ0130 datasheet.

What debug interface does the R5F1217CANA#20 use?

The R5F1217CANA#20 uses the on-chip debug interface accessed via dedicated pins P40 (TOOL0), P01 (TOOLRxD), and P00 (TOOLTxD), supporting full in-circuit debugging, flash programming, and real-time trace without requiring JTAG or SWD headers. This is documented in Section 1.1 "Features" and Table 1-5 of the R01DS0431EJ0130 datasheet.