Renesas R5F1214AANA#20

Overview

R5F1214AANA#20 from Renesas Electronics is a 16-pin HWQFN-packaged RL78/G16 16-bit 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 HALT/STOP low-power modes, and delivers ultra-low-speed operation at 32.768 kHz for battery-powered consumer applications.

For engineers reviewing the R5F1214AANA#20 datasheet, R5F1214AANA#20 pinout, R5F1214AANA#20 application, or R5F1214AANA#20 equivalent, key selection criteria include its 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) footprint, −40 to +85°C industrial-grade temperature range (A-grade), 10-bit A/D converter with up to 11 analog inputs, and dual serial interfaces including UART and simplified I²C.

Technical Context

The R5F1214AANA#20 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, enabling 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 block size, 1M rewrite cycles), and 2 KB on-chip RAM.

Peripheral integration includes eight 16-bit timers, one 12-bit interval timer, watchdog timer, real-time clock (RTC) with 99-year calendar, 10-bit A/D converter (up to 11 channels), two comparators, and a dedicated capacitive touch sensing unit supporting self- and mutual-capacitance configurations - all accessible via multiplexed I/O pins in the 16-pin HWQFN package.

Key Specifications

Pinout & Package

Package: 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) with exposed die pad requiring non-electrical PCB thermal pad connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1214CANA#20, the R5F1214AANA#20 trades flash capacity for lower unit cost while retaining full CTSU and analog peripheral functionality; versus R5F1211AASP#10, it adds 11-channel ADC and 15-channel touch sensing at the cost of 6 additional pins and QFN assembly complexity.

Availability

R5F1214AANA#20 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI keypads, and smart thermostat interfaces requiring stable component supply across multi-year production cycles.

Supply support for R5F1214AANA#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 targets cost-sensitive, low-power embedded applications requiring integrated analog peripherals and capacitive touch - designed specifically for consumer electronics and industrial human-machine interfaces.

FAQ

What is the maximum operating frequency of the R5F1214AANA#20?

The R5F1214AANA#20 supports a maximum system clock frequency of 16 MHz using its high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.0625 μs. The device also supports ultra-low-speed operation at 32.768 kHz for RTC and deep-sleep functions. Frequency accuracy is ±1.0% over −20°C to +85°C at VDD = 2.4–5.5 V.

Does the R5F1214AANA#20 support in-system programming of its flash memory?

Yes, the R5F1214AANA#20 supports self-programming of both code flash and data flash memory without requiring a boot swap function. Programming is performed via on-chip debug interface or user firmware using standard Renesas flash control registers. No external programmer is needed for field updates, though background operation (BGO) is not supported during data flash writes.

How many capacitive touch channels does the R5F1214AANA#20 provide?

The R5F1214AANA#20 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) with 15 channels. It supports both self-capacitance (up to 15 independent keys) and mutual-capacitance (up to 16 keys in matrix configuration) modes, eliminating the need for external touch controller ICs in HMI designs.

What are the power supply requirements for the R5F1214AANA#20?

The R5F1214AANA#20 operates from a single 2.4 V to 5.5 V supply on the VDD pin. It requires proper decoupling (typically 100 nF ceramic + 10 μF tantalum) close to the VDD/VSS pins. The device supports multiple low-power modes: HALT mode draws < 0.55 μA and STOP mode draws < 0.23 μA at VDD = 3.0 V and TA = 25°C.

Is the R5F1214AANA#20 pin-compatible with other RL78/G16 variants in the same package?

Yes, the R5F1214AANA#20 is pin-compatible with all other 16-pin HWQFN RL78/G16 devices, including R5F1214CANA#20 (32 KB flash) and R5F1214AGNA#20 (G-grade, −40°C to +105°C). Pin assignments, electrical characteristics, and peripheral mappings are identical across these variants - only flash size, temperature grade, and ordering codes differ.