Renesas R5F104LCAFA#10

Overview

R5F104LCAFA#10 from Renesas is a 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), 512 KB flash, 48 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low-power HALT/STOP/SNOOZE modes (0.60 μA RTC+LVD), targeting industrial control and sensor interface applications.

For engineers reviewing the R5F104LCAFA#10 datasheet, R5F104LCAFA#10 pinout, R5F104LCAFA#10 application, or R5F104LCAFA#10 equivalent, key selection criteria include its 512 KB code flash + 8 KB data flash with BGO, 20-channel 10-bit ADC, dual D/A outputs, real-time clock with calendar, and integrated event link controller for deterministic peripheral triggering.

Technical Context

The R5F104LCAFA#10 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 integrates a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes activated by 19–26 event sources via the Event Link Controller (ELC).

It features a high-accuracy ±1.0% on-chip oscillator (selectable 1–64 MHz), 16-bit Timer Array Unit (TAU) with up to 8 channels, 12-bit interval timer, watchdog timer, and hardware CRC calculation unit - all optimized for deterministic real-time operation in resource-constrained embedded systems.

Key Specifications

Pinout & Package

64-pin LQFP package (12 × 12 mm, 0.65 mm pitch), JEDEC standard footprint, exposed pad not present. Pin functions conform to RL78/G14 family mapping with peripheral I/O redirection via PIOR0/PIOR1 registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LCAFA#10, R5F104LLAFA#10 adds extended temperature tolerance without memory or peripheral trade-offs, while R5F104LKAFA#10 reduces flash/RAM capacity to lower unit cost - enabling scalable platform design across performance tiers.

Availability

R5F104LCAFA#10 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance UI controllers, programmable power supplies, and battery-operated instrumentation requiring stable component supply and long-term lifecycle support.

Supply support for R5F104LCAFA#10 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 MCU performance for general-purpose embedded applications, emphasizing energy efficiency, integration density, and toolchain maturity for rapid development.

FAQ

What is the maximum operating frequency and associated performance of the R5F104LCAFA#10?

The R5F104LCAFA#10 operates at up to 32 MHz with a peak performance of 44 DMIPS. This is achieved using the RL78 CPU core's 3-stage pipeline and high-accuracy on-chip oscillator. The device maintains full peripheral functionality-including ADC, DAC, and timers-at this speed, and supports dynamic clock scaling to reduce power during low-load periods. The R5F104LCAFA#10 achieves 66 μA per MHz in HALT mode, confirming efficient execution at rated frequency.

Does the R5F104LCAFA#10 support background data flash rewriting while executing application code?

Yes, the R5F104LCAFA#10 supports Background Operation (BGO) for data flash memory. Instructions can be fetched and executed from code flash while data flash is being rewritten, eliminating CPU stalls. This enables seamless firmware parameter updates or logging without interrupting real-time tasks. The R5F104LCAFA#10 guarantees 1,000,000 rewrite cycles at VDD = 1.8–5.5 V, and the flash library reserves RAM starting at address F3F00H for self-programming operations.

What analog peripherals are integrated into the R5F104LCAFA#10?

The R5F104LCAFA#10 integrates a 10-bit successive-approximation ADC with up to 20 input channels, an internal 1.45 V reference voltage, and an on-die temperature sensor calibrated across −40°C to +85°C. It also includes two independent 8-bit DACs with rail-to-rail output (0 V to VDD) and real-time update capability. These peripherals operate across the full 1.6–5.5 V supply range, allowing direct interfacing with sensors and actuators without external signal conditioning for many use cases. The R5F104LCAFA#10 does not include comparators in this variant.

How does the Event Link Controller (ELC) enhance real-time responsiveness in the R5F104LCAFA#10?

The Event Link Controller (ELC) in the R5F104LCAFA#10 enables direct hardware-level linking between 19–26 peripheral events (e.g., timer overflow, ADC end-of-conversion) and target functions (e.g., DTC activation, DAC update, GPIO toggle) without CPU intervention. This eliminates interrupt latency and software overhead, ensuring sub-microsecond deterministic response-critical for motor control commutation or sensor sampling synchronization. The R5F104LCAFA#10 uses ELC to offload timing-critical sequences from firmware, improving both reliability and CPU utilization.

What is the industrial temperature rating and package type of the R5F104LCAFA#10?

The R5F104LCAFA#10 is rated for industrial operation from −40°C to +85°C ('A' grade) and housed in a 64-pin LQFP package (12 × 12 mm, 0.65 mm pitch) with JEDEC-standard footprint. This package supports automated optical inspection and reflow soldering per IPC-J-STD-020. The R5F104LCAFA#10 uses lead-free (RoHS-compliant) terminations and is compatible with standard PCB assembly processes used in industrial electronics manufacturing.