Renesas R5F104LHAFA#V0

Overview

R5F104LHAFA#V0 from Renesas Electronics is a 64-pin LQFP-0.65mm 512 KB flash, 8 KB data flash, 20 KB RAM RL78/G14 16-bit microcontroller operating at 32 MHz with 44 DMIPS, 1.6–5.5 V supply, and -40 to +85°C industrial temperature range. It integrates 12-channel 10-bit ADC, dual DAC, RTC, 16-bit timers, UART/SPI/I²C interfaces, and ultra-low-power HALT/STOP/SNOOZE modes for battery-powered sensor nodes and industrial control.

For engineers reviewing the R5F104LHAFA#V0 datasheet, R5F104LHAFA#V0 pinout, R5F104LHAFA#V0 application, or R5F104LHAFA#V0 equivalent, key selection criteria include its 512 KB code flash capacity, 64-pin LQFP-0.65 mm package with full peripheral remapping, real-time clock with calendar/alarm, and support for background data flash rewriting at 1.8–5.5 V.

Technical Context

The R5F104LHAFA#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz), multiply/divide/accumulate instructions, and 1 MB address space. It features an on-chip high-accuracy ±1.0% oscillator (1–64 MHz selectable) and dedicated low-speed oscillator for watchdog timing.

Peripheral integration includes Event Link Controller (ELC) for hardware-triggered peripheral chaining, Data Transfer Controller (DTC) with block/repeat/chain transfer modes, and simplified SPI (CSI), UART/LIN, and I²C interfaces - all configurable via peripheral I/O redirection registers (PIOR0/1) to decouple function assignment from physical pin layout.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 12 × 12 mm body, 0.65 mm pitch, JEDEC standard PLQP0064JA-A footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LGAFA#V0 and R5F104LLAFA#V0, the R5F104LHAFA#V0 delivers maximum on-chip memory (512 KB/20 KB) in the same LQFP-0.65 mm footprint, enabling complex firmware with real-time logging, cryptographic libraries, and multi-interface protocol stacks without external memory.

Availability

R5F104LHAFA#V0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and programmable logic controller I/O modules requiring stable component supply across extended product lifecycles.

Supply support for R5F104LHAFA#V0 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 industrial and consumer applications demanding robust analog integration, ultra-low standby current, and seamless toolchain support with CS+ and e2 studio.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104LHAFA#V0?

The R5F104LHAFA#V0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This rating is achieved using the RL78 CPU core's 3-stage pipeline and is validated under typical conditions (VDD = 3.3 V, TA = 25°C). The core supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation, with instruction execution time ranging from 0.03125 µs to 30.5 µs accordingly.

Does the R5F104LHAFA#V0 support background data flash rewriting while executing code from main flash?

Yes, the R5F104LHAFA#V0 supports Background Operation (BGO) for data flash. This allows the CPU to execute instructions from program flash memory while simultaneously rewriting the 8 KB data flash - essential for non-disruptive firmware updates, parameter storage, or event logging. The data flash endurance is rated at 1,000,000 write/erase cycles at VDD = 1.8–5.5 V.

What package type and footprint does the R5F104LHAFA#V0 use, and is it compatible with standard LQFP-64 reflow profiles?

The R5F104LHAFA#V0 uses a 64-pin LQFP package with 12 × 12 mm body and 0.65 mm pitch, conforming to JEDEC standard PLQP0064JA-A. It is fully compatible with industry-standard lead-free reflow profiles (J-STD-020) and supports automated optical inspection (AOI) due to its gull-wing lead geometry. No special thermal pads or underfill are required.

How many analog input channels and what resolution does the ADC in the R5F104LHAFA#V0 provide?

The R5F104LHAFA#V0 integrates a 10-bit successive-approximation ADC with up to 20 analog input channels (ANI0–ANI19), including dedicated pins for internal temperature sensor and reference voltage (1.45 V). Conversion time is programmable from 1.5 to 12.5 µs per sample, and the ADC supports scan mode, group conversion, and hardware-triggered operation via ELC or timers.

Can the R5F104LHAFA#V0 operate from a single 1.8 V supply, and what low-power modes are available below 2.0 V?

Yes, the R5F104LHAFA#V0 supports operation from 1.6 V to 5.5 V, making it fully functional at 1.8 V. At this voltage, it maintains full peripheral operation including ADC, timers, and serial interfaces. Ultra-low-power modes include HALT (core stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (selected peripherals active while CPU sleeps) - with STOP mode consuming just 0.60 μA at 1.8 V.