Renesas R5F104AEDSP#X0

Overview

R5F104AEDSP#X0 from Renesas Electronics is a 32-bit RL78/G14 microcontroller with 48 KB flash memory, 4 KB data flash, and 5.5 KB RAM, operating at up to 32 MHz (44 DMIPS), supporting 1.6–5.5 V supply and industrial temperature range (−40 to +85°C). It integrates 10-bit ADC (16 channels), UART/SPI/I²C interfaces, RTC, watchdog timer, and ultra-low-power modes (0.60 μA in STOP with RTC+LVD).

For engineers reviewing the R5F104AEDSP#X0 datasheet, R5F104AEDSP#X0 pinout, R5F104AEDSP#X0 application, or R5F104AEDSP#X0 equivalent, key selection considerations include its LSSOP-30 package with 0.65 mm pitch, 30-pin I/O configuration, integrated voltage detector (14-level LVD), background data flash rewriting, and support for SNOOZE mode for sensor wake-up control in battery-powered systems.

Technical Context

The R5F104AEDSP#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, enabling instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz), and supports multiply/divide/accumulate operations within a 1 MB address space. Its on-chip peripherals include Timer Array Unit (TAU) with 8 channels, 12-bit interval timer, real-time clock with calendar/alarm, and event link controller (ELC) for hardware-triggered peripheral chaining.

Power management includes HALT, STOP, and SNOOZE modes; the latter allows selected peripherals (e.g., ADC, comparator) to operate while CPU sleeps, with wake-up via interrupt or timer. The high-accuracy on-chip oscillator offers ±1.0% stability across 1.8–5.5 V and −20 to +85°C, eliminating need for external crystal in cost-sensitive applications.

Key Specifications

Pinout & Package

LSSOP-30 package (7.62 mm × 4.4 mm, 0.65 mm pitch), 30-pin surface-mount with exposed thermal pad not present (non-QFN type).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BEDSP#X0 and R5F104CEDSP#X0, the R5F104AEDSP#X0 provides optimal balance of flash capacity (48 KB), data flash (4 KB), and industrial temperature rating in the smallest LSSOP-30 footprint-making it ideal for space-constrained, battery-operated industrial sensors requiring moderate firmware complexity and long-term data logging.

Availability

R5F104AEDSP#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and portable medical diagnostics requiring stable component supply across extended product lifecycles.

Supply support for R5F104AEDSP#X0 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 family delivers true low-power performance (66 μA/MHz, 0.60 μA STOP) for general-purpose embedded control, targeting cost-sensitive industrial and consumer applications needing rich analog integration and robust firmware security.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104AEDSP#X0?

The R5F104AEDSP#X0 operates at up to 32 MHz with a measured performance of 44 DMIPS. Its RL78 CPU core achieves this via a 3-stage pipeline and supports instruction execution times ranging from 0.03125 μs (at 32 MHz with high-speed oscillator) to 30.5 μs (at 32.768 kHz). This enables deterministic real-time response in motor control and sensor fusion applications while maintaining ultra-low power consumption.

Does the R5F104AEDSP#X0 support in-system programming and secure firmware updates?

Yes, the R5F104AEDSP#X0 supports self-programming of both code and data flash memory with boot swap functionality and flash shield window protection. It allows background operation (BGO) during data flash rewriting, enabling concurrent program execution and data logging. Security features include block erase prohibition and on-chip debug lock to prevent unauthorized access to firmware.

What analog capabilities does the R5F104AEDSP#X0 provide for sensor interfacing?

The R5F104AEDSP#X0 integrates a 10-bit ADC with 16 input channels, internal 1.45 V reference voltage, and an on-die temperature sensor. It supports simultaneous sampling on multiple channels and includes hardware averaging to improve SNR. These features make the R5F104AEDSP#X0 well-suited for precision analog measurements in environmental monitoring and industrial process control.

How does the R5F104AEDSP#X0 manage power in battery-operated applications?

The R5F104AEDSP#X0 offers three ultra-low-power modes: HALT (66 μA/MHz), STOP (0.60 μA with RTC + LVD active), and SNOOZE (peripheral-triggered wake-up with CPU asleep). Its on-chip voltage detector provides 14 programmable thresholds for brown-out detection, and the high-accuracy ±1.0% on-chip oscillator eliminates external crystal needs-reducing BOM cost and board area in battery-powered R5F104AEDSP#X0 designs.

Is the R5F104AEDSP#X0 pin-compatible with other RL78/G14 variants in the LSSOP-30 package?

Yes, all RL78/G14 devices in the LSSOP-30 package-including R5F104AEDSP#X0, R5F104BEDSP#X0, and R5F104CEDSP#X0-share identical pin count, pitch, and pin function mapping. This allows direct substitution within the same footprint for firmware scalability (e.g., upgrading from 32 KB to 48 KB flash) without PCB redesign, provided power and thermal constraints remain within specification.