Renesas R5F104PHAFA#V0

Overview

R5F104PHAFA#V0 from Renesas is a 48-pin LQFP-0.65 mm pitch, 96 KB flash, 12 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with 66 μA/MHz active current and RTC+LVD standby at 0.60 μA - deployed in industrial motor control and sensor interface modules.

For engineers reviewing the R5F104PHAFA#V0 datasheet, R5F104PHAFA#V0 pinout, R5F104PHAFA#V0 application, or R5F104PHAFA#V0 equivalent, key selection criteria include its 44-pin LQFP package, 96 KB code flash with 1 KB block size, integrated 10-bit ADC (20-channel), dual UART/LIN support, and -40°C to +85°C industrial temperature grade.

Technical Context

The R5F104PHAFA#V0 implements the RL78 CPU core with 3-stage CISC pipeline, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz), plus multiply/divide/accumulate instructions and 1 MB address space. It integrates a Data Transfer Controller (DTC) with chain transfer and Event Link Controller (ELC) for peripheral event routing without CPU intervention.

Its mixed-signal subsystem includes an 8/10-bit SAR ADC with internal 1.45 V reference and temperature sensor, dual 8-bit DAC outputs (0–VDD), two comparators with window mode, and real-time clock with calendar, alarm, and correction functions - all synchronized via the on-chip high-accuracy ±1.0% oscillator (1–64 MHz selectable).

Key Specifications

Pinout & Package

Package: 48-pin LQFP, 7 mm × 7 mm, 0.65 mm pitch, exposed pad not present (LFQFP variant per ordering code FA).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GHAFA#V0 and R5F104PJAFA#V0, the R5F104PHAFA#V0 provides optimal cost-performance balance for fixed-function industrial controllers where 96 KB flash and 12 KB RAM meet requirements without over-provisioning - avoiding unnecessary PCB redesign or BOM cost increase.

Availability

R5F104PHAFA#V0 is available at Aetrix Electronics and suitable for industrial motor control, sensor fusion nodes, PLC I/O modules, and home appliance UI controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F104PHAFA#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 ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications requiring robust mixed-signal integration, long battery life, and seamless toolchain support.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104PHAFA#V0?

The R5F104PHAFA#V0 operates up to 32 MHz with a measured performance of 44 DMIPS. This value is derived from the RL78 CPU core's 3-stage pipeline and instruction mix benchmarking per EEMBC CoreMark methodology. The high-speed on-chip oscillator supports ±1.0% accuracy across 1.6–5.5 V and -40°C to +85°C, enabling reliable timing without external crystal in many applications.

Does the R5F104PHAFA#V0 support background data flash rewriting while executing code from main flash?

Yes, the R5F104PHAFA#V0 supports Background Operation (BGO) for data flash. While rewriting its 4 KB data flash memory, the CPU can execute instructions from the main 96 KB code flash without interruption. This capability is essential for logging sensor data or storing calibration parameters during real-time operation, with guaranteed 1,000,000 write cycles at VDD = 1.8–5.5 V.

What are the supported serial communication interfaces on the R5F104PHAFA#V0 and how are they allocated across pins?

The R5F104PHAFA#V0 integrates 3 UART/LIN channels, 4 I²C interfaces, and 3 CSI (SPI-compatible) channels. Pin allocation is multiplexed: UART2/3 share P13–P15; I²C0–I²C3 map to P60–P61, P14–P15, P16–P17, and P10–P11; CSI0–CSI2 appear on P62–P63, P70–P72, and P30–P31. All are configurable via the Event Link Controller for flexible signal routing.

How does the R5F104PHAFA#V0 achieve ultra-low power consumption in STOP mode?

The R5F104PHAFA#V0 achieves 0.60 μA in STOP mode by disabling the main system clock while retaining power to the RTC, LVD, and RAM retention circuitry. The dedicated low-speed on-chip oscillator (32.768 kHz) continues driving the RTC, and the LVD monitors VDD at one of 14 selectable thresholds - enabling wake-up on voltage drop or RTC alarm without CPU involvement.

Is the R5F104PHAFA#V0 pin-compatible with other RL78/G14 variants in the same 48-pin LQFP package?

Yes, all RL78/G14 devices with ordering code suffix FA (e.g., R5F104GHAFA#V0, R5F104LHAFA#V0) share identical 48-pin LQFP-0.65 mm mechanical footprint and pinout. Peripheral function mapping is consistent across the family, allowing firmware reuse and hardware scalability - only flash/RAM capacities and minor feature subsets (e.g., DAC count) differ between variants.