Renesas R5F104PFAFB#30

Overview

R5F104PFAFB#30 from Renesas is a 100-pin LFQFP (0.5 mm pitch), 96 KB flash, 5.5 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F104PFAFB#30 datasheet, R5F104PFAFB#30 pinout, R5F104PFAFB#30 application, or R5F104PFAFB#30 equivalent, key selection criteria include its 100-pin LFQFP-0.5 mm package, 96 KB code flash + 4 KB data flash, integrated 10-bit 20-channel ADC, dual UART/LIN support, and real-time clock with calendar function for time-stamped sensor logging.

Technical Context

The R5F104PFAFB#30 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz high-speed oscillator) to 30.5 µs (32.768 kHz subsystem clock). It integrates a Data Transfer Controller (DTC) for autonomous memory transfers triggered by 19–26 event sources via the Event Link Controller (ELC).

Its peripheral set includes eight 16-bit timer channels (TAU, RJ, RD, RG), one 12-bit interval timer, one real-time clock with 99-year calendar and alarm, one watchdog timer, and up to ten I²C/Simplified I²C channels - all configurable via peripheral I/O redirection registers (PIOR0/1) for flexible pin assignment.

Key Specifications

Pinout & Package

Package: 100-pin LFQFP, 14 × 14 mm body, 0.5 mm pitch, exposed thermal pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104PFAFB#30, R5F104PGAFB#30 provides headroom for complex protocol stacks and data logging, while R5F104PHAFB#30 maintains identical feature set with guaranteed operation up to +105°C - enabling drop-in qualification in harsh environments without altering software or layout.

Availability

R5F104PFAFB#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F104PFAFB#30 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 industrial, automotive, and enterprise applications.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and energy-efficient embedded systems requiring rich analog integration and robust real-time control.

FAQ

What is the maximum operating frequency and power consumption of the R5F104PFAFB#30?

The R5F104PFAFB#30 operates up to 32 MHz with 44 DMIPS performance and achieves 66 μA/MHz active current. In STOP mode with only RTC and LVD enabled, it draws just 0.60 μA - verified per Renesas R01DS0053EJ0370 datasheet Section 1.1. This makes R5F104PFAFB#30 ideal for energy harvesting and coin-cell-powered applications where microamp-level sleep current is mandatory.

Does the R5F104PFAFB#30 support in-system programming and secure firmware updates?

Yes, the R5F104PFAFB#30 supports self-programming of both code and data flash memory with boot swapping and flash shield window protection. The flash shield window prevents unauthorized read-out of protected code regions during debugging or programming, and the on-chip debug interface enables field firmware updates without requiring external programmers. This capability is fully documented for R5F104PFAFB#30 in the RL78/G14 datasheet Section 1.1.

What serial communication interfaces are available on the R5F104PFAFB#30?

The R5F104PFAFB#30 integrates three UART/LIN channels, four I²C/simplified I²C channels, and three CSI (SPI-compatible) channels. All are accessible on its 100-pin LFQFP package with flexible pin assignment via peripheral I/O redirection registers (PIOR0/1). This allows concurrent use of UART for diagnostics, I²C for sensor communication, and CSI for display or memory expansion - confirmed in R01DS0053EJ0370 Table 1-1 and Section 1.1.

What is the ADC configuration of the R5F104PFAFB#30?

The R5F104PFAFB#30 features a 10-bit successive approximation register (SAR) ADC with up to 20 analog input channels, internal 1.45 V reference voltage, and integrated temperature sensor. It supports single- and continuous-conversion modes with programmable sample-and-hold timing. These specifications are fixed for the R5F104PFAFB#30 variant and match the RL78/G14 family's 10-bit ADC implementation detailed in Section 1.1 of R01DS0053EJ0370.

Is the R5F104PFAFB#30 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104PFAFB#30 shares identical 100-pin LFQFP-0.5 mm mechanical footprint and pinout with all other RL78/G14 parts using the FB suffix (e.g., R5F104PGAFB#30, R5F104PHAFB#30). Pin functions are consistent across this package group, and differences are limited to flash/RAM capacity and temperature grade - verified in Renesas ordering information Table 1-1 (Page 8) and pin configuration diagrams for 100-pin LFQFP.