Renesas R5F104LCAFA#50

Overview

R5F104LCAFA#50 from Renesas is a 64-pin LQFP-0.65mm-pitch 16-bit RL78/G14 microcontroller with 192 KB flash, 20 KB RAM, and 8 KB data flash, operating from 1.6 V to 5.5 V across -40°C to +85°C. It delivers 44 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates 12-bit RTC, 10-bit ADC (16 ch), UART/LIN, I²C, and CSI interfaces for industrial control and sensor node applications.

For engineers reviewing the R5F104LCAFA#50 datasheet, R5F104LCAFA#50 pinout, R5F104LCAFA#50 application, or R5F104LCAFA#50 equivalent, key selection criteria include its 64-pin LQFP package, 192 KB code flash with self-programming and flash shield window, 10-bit ADC with internal reference and temperature sensor, real-time clock with calendar/alarm, and support for LIN bus communication in automotive body electronics and smart home controllers.

Technical Context

The R5F104LCAFA#50 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs @ 32 MHz to 30.5 µs @ 32.768 kHz). It supports multiply/divide/accumulate instructions and a 1 MB address space with four banks of 8-bit general-purpose registers.

Its peripheral set includes Timer Array Unit (TAU) with up to 8 channels, one 12-bit interval timer, one watchdog timer, two DTC channels, ELC for event-driven peripheral linking, and serial interfaces: up to 8 CSI channels, 4 UART/LIN channels, and 10 I²C/simplified I²C channels - all configurable via peripheral I/O redirection registers.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, industrial-grade (-40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LCAFA#50, R5F104LDAFA#50 offers 64 KB more flash for feature-rich firmware, while R5F104LEAFA#50 maintains identical memory and peripherals but guarantees operation up to +105°C - enabling drop-in replacement in thermally demanding environments without layout or software changes.

Availability

R5F104LCAFA#50 is available at Aetrix Electronics and suitable for industrial motor control, smart home sensor hubs, automotive body electronics, and energy monitoring modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R5F104LCAFA#50 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally constrained applications - combining ultra-low active/standby current with rich analog and communication peripherals in compact packages.

FAQ

What is the maximum operating frequency and performance of the R5F104LCAFA#50?

The R5F104LCAFA#50 operates at up to 32 MHz and delivers 44 DMIPS of processing performance. Its RL78 CPU core uses a 3-stage pipeline and supports configurable instruction timing - from 0.03125 µs at full speed to 30.5 µs in ultra-low-speed RTC mode - enabling deterministic real-time response in both high-throughput and ultra-low-power scenarios. This performance level is validated across the full industrial temperature range (-40°C to +85°C).

Does the R5F104LCAFA#50 support LIN bus communication?

Yes, the R5F104LCAFA#50 supports LIN bus communication through its UART peripherals, which include dedicated LIN header detection, automatic sync-break generation, and checksum calculation. The device implements LIN 2.2A compliance in hardware, allowing it to serve as a LIN slave node in automotive body control modules without external transceivers or firmware overhead - confirmed in the RL78/G14 datasheet Section 1.1 and UART functional description.

What are the flash and data flash capacities of the R5F104LCAFA#50?

The R5F104LCAFA#50 integrates 192 KB of on-chip code flash memory and 8 KB of data flash memory. The code flash supports block erase (1 KB), self-programming with boot swapping, and flash shield window security. The data flash enables background operation (BGO), tolerates 1,000,000 write cycles, and operates across the full 1.8–5.5 V supply range - making it ideal for storing calibration data, event logs, or user configurations without interrupting application execution.

What is the ADC resolution and channel count on the R5F104LCAFA#50?

The R5F104LCAFA#50 features a 10-bit successive-approximation ADC with up to 16 analog input channels. It includes an internal 1.45 V reference voltage, dedicated AVREFP/AVREFM pins for external reference, and an integrated temperature sensor - all accessible without external components. The ADC supports scan mode, group conversion, and hardware trigger linkage via the Event Link Controller (ELC) for synchronized sampling.

What package type and pin count does the R5F104LCAFA#50 use?

The R5F104LCAFA#50 uses a 64-pin LQFP package with 0.65 mm pitch (RENESAS code PLQP0064JA-A), measuring 12 × 12 mm. This industrial-grade package supports reflow soldering, provides robust thermal and mechanical performance, and is explicitly listed in Table 1-1 of the RL78/G14 datasheet (R01DS0053EJ0370) for ordering part number R5F104LCAFA#50 under "64 pins / 64-pin plastic LQFP / 0.65 mm pitch".