Renesas R5F104LJAFP#V0

Overview

R5F104LJAFP#V0 from Renesas is a 64-pin LQFP-0.65mm, 192 KB flash, 8 KB data flash, 20 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 industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F104LJAFP#V0 datasheet, R5F104LJAFP#V0 pinout, R5F104LJAFP#V0 application, or R5F104LJAFP#V0 equivalent, key selection criteria include its 64-pin LQFP package, 192 KB code flash with self-programming and boot swap, integrated RTC with calendar/alarm, and dual 10-bit A/D converter supporting up to 20 channels - all validated for -40°C to +85°C industrial operation.

Technical Context

The R5F104LJAFP#V0 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 triggered by 19–26 event sources via the Event Link Controller (ELC).

It features a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, dual 8-bit D/A outputs (0–VDD), two comparators with window/high-speed/low-speed modes, and multiple serial interfaces including 3–8 CSI channels, 3–4 UART/LIN channels, and 4–10 I²C channels - all mapped to dedicated peripheral function registers and configurable via PIOR0/PIOR1.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, 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 R5F104LHAFP#V0, the R5F104LJAFP#V0 provides 64 KB more flash and 4 KB more RAM for enhanced data buffering and feature scalability; versus R5F104LKAFP#V0, it trades 64 KB flash for lower unit cost while retaining identical peripheral functionality and real-time performance.

Availability

R5F104LJAFP#V0 is available at Aetrix Electronics and suitable for industrial sensor hubs, smart energy meters, and home appliance control systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F104LJAFP#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 control, metering, and sensor applications - combining sub-μA STOP mode, integrated analog peripherals, and robust flash reliability.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104LJAFP#V0?

The R5F104LJAFP#V0 operates at up to 32 MHz with a verified performance of 44 DMIPS. This rating is measured using the EEMBC CoreMark benchmark under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects the RL78 CPU core's 3-stage pipeline efficiency. The high-speed on-chip oscillator supports selectable frequencies from 1 MHz to 64 MHz, but the R5F104LJAFP#V0 is rated for 32 MHz maximum operation per its datasheet specification.

Does the R5F104LJAFP#V0 support hardware debugging, and what interface is used?

Yes, the R5F104LJAFP#V0 includes an on-chip debug function compatible with Renesas E2 emulator and E2 Lite debugger. It uses the dedicated on-chip debug interface with pins P40 (TOOL0) and P50/P51 (TRGIOA/TRGIOB) configured as the debug port. No external debug probe components are required, and the interface supports full breakpoint, watchpoint, and real-time trace capabilities as defined in the RL78/G14 Hardware Manual.

What are the exact flash and RAM sizes allocated for the R5F104LJAFP#V0, and how is RAM used by the flash library?

The R5F104LJAFP#V0 has 192 KB of code flash memory, 8 KB of data flash memory, and 20 KB of on-chip RAM. Per Renesas documentation (R20UT2944), the flash self-programming library reserves RAM starting at address F9F00H. This allocation is fixed for R5F104xJ-series devices and must be excluded from application use to ensure safe flash erase/write operations without corruption.

Can the R5F104LJAFP#V0 operate reliably across the full industrial temperature range, and what grade does its ordering code indicate?

Yes, the R5F104LJAFP#V0 is qualified for industrial operation from -40°C to +85°C, as indicated by the 'D' field-of-application code embedded in its part number structure. This grade is confirmed in Table 1-1 of the datasheet and applies to all R5F104LxAFP variants with #V0 packaging. The device meets Renesas' industrial-grade qualification standards for thermal cycling, HTOL, and ESD robustness under these ambient conditions.

How many analog input channels and what resolution does the A/D converter on the R5F104LJAFP#V0 support?

The R5F104LJAFP#V0 integrates a 10-bit successive-approximation A/D converter with up to 20 analog input channels (ANI0–ANI19), including dedicated inputs for internal temperature sensor and VCOUT outputs. It supports both single-ended and differential measurement modes, uses an internal 1.45 V reference (±1% accuracy), and achieves 10-bit linearity across the full 1.6–5.5 V supply range - validated in the RL78/G14 Electrical Characteristics table.