Renesas R5F1214CANA#20

Overview

R5F1214CANA#20 from Renesas Electronics is a 16-pin HWQFN-packaged 32 KB flash RL78/G16 16-bit microcontroller with 2 KB RAM, 10-bit A/D converter (up to 11 channels), capacitive touch sensing unit (15 channels), and integrated real-time clock with calendar function. It operates from 2.4–5.5 V and supports industrial temperature range up to +125°C (M-grade), targeting low-power embedded control in appliance user interfaces and sensor-based industrial modules.

For engineers reviewing the R5F1214CANA#20 datasheet, R5F1214CANA#20 pinout, R5F1214CANA#20 application, or R5F1214CANA#20 equivalent, key selection considerations include its 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) footprint, C-grade 32 KB code flash memory, M-grade extended temperature operation, and integrated CTSU for touch-button HMI implementation without external components.

Technical Context

The R5F1214CANA#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). It integrates dual clock domains: a high-speed on-chip oscillator (selectable 1–16 MHz, ±1.5% accuracy at TA = −40 to +125°C) and a dedicated low-speed oscillator for watchdog and RTC.

Peripheral integration includes eight 16-bit timers, one 12-bit interval timer, one watchdog timer, one 99-year real-time clock with alarm and correction, one 8/10-bit A/D converter with internal reference voltage (0.815 V), two comparators, and a 15-channel capacitive touch sensing unit supporting both self- and mutual-capacitance configurations.

Key Specifications

Pinout & Package

16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) package with exposed die pad requiring PCB thermal pad connection (no electrical connection). Pin functions are multiplexed via peripheral I/O redirection registers (PIOR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1214AANA#20 and R5F1214CGNA#20, the R5F1214CANA#20 provides double the code flash capacity and extended +125°C operation-critical for feature-rich HMI firmware and harsh thermal environments where G-grade or A-grade variants would fail qualification.

Availability

R5F1214CANA#20 is available at Aetrix Electronics and suitable for home appliance control panels, industrial sensor nodes, smart thermostats, and motorized valve controllers requiring stable component supply across long production lifecycles.

Supply support for R5F1214CANA#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 IoT markets.

The RL78/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally demanding embedded applications requiring integrated analog, touch, and timing functions.

FAQ

What is the maximum operating temperature specification for R5F1214CANA#20?

The R5F1214CANA#20 is rated for operation from −40°C to +125°C (M-grade industrial qualification), verified per Renesas' standard qualification test flow. This allows deployment in high-temperature environments such as inside appliance enclosures, near motors, or in unventilated industrial cabinets where ambient temperatures exceed +105°C.

Does R5F1214CANA#20 support in-system programming without external hardware?

Yes, the R5F1214CANA#20 supports full on-chip debug and self-programming via its built-in debug interface. Firmware updates can be performed in-system using only the TOOL0/TOOLRxD/TOOLTxD pins-no external programmer or bootloader partition is required. The R5F1214CANA#20 implements flash shield window protection but does not require boot swap functionality.

How many capacitive touch channels does R5F1214CANA#20 provide, and what configuration options exist?

The R5F1214CANA#20 integrates a 15-channel capacitive touch sensing unit (CTSU) supporting both self-capacitance (15 independent keys) and mutual-capacitance (up to 16 keys in matrix configuration). All 15 channels map directly to GPIO pins P02–P07, P20–P23, and P41, with no external components needed for basic button detection.

What serial communication interfaces are available on R5F1214CANA#20?

The R5F1214CANA#20 provides up to three simplified SPI (CSI), three UART, three simplified I²C (RIIC), and one full I²C (IICA) interface-all multiplexed across its 16 GPIO pins and configurable via peripheral I/O redirection registers (PIOR). No hardware conflict exists between these interfaces when properly assigned in software.

Is an external crystal required for real-time clock operation in R5F1214CANA#20?

No, the R5F1214CANA#20 includes a dedicated low-speed on-chip oscillator for the real-time clock, enabling full 99-year calendar, alarm, and clock correction functions without any external crystal. An external 32.768 kHz crystal may be used for higher accuracy, but it is optional-not required-for basic RTC operation.