Renesas R5F104AAASP#10

Overview

R5F104AAASP#10 from Renesas is a 30-pin LSSOP-packaged RL78/G14 16-bit microcontroller with 16 KB flash, 2.5 KB RAM, and ultra-low-power operation (66 μA/MHz active, 0.60 μA RTC+LVD mode) for consumer-grade embedded control in battery-powered sensors, smart home peripherals, and industrial HMI panels.

For engineers reviewing the R5F104AAASP#10 datasheet, R5F104AAASP#10 pinout, R5F104AAASP#10 application, or R5F104AAASP#10 equivalent, key selection criteria include its 1.6–5.5 V supply range, 32 MHz max CPU speed, integrated 10-bit ADC (8 channels), UART/SPI/I²C interfaces, and -40 to +85°C operating temperature.

Technical Context

The R5F104AAASP#10 implements the RL78 CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz), and includes multiply/divide/accumulate instructions. It integrates a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, plus an 8-bit D/A converter with real-time output capability.

Its peripheral set includes Timer Array Unit (TAU) with up to 8 channels, one 12-bit interval timer, one real-time clock with calendar/alarm/correction, and one watchdog timer. Serial interfaces comprise up to 8 CSI (SPI-compatible) channels, 4 UART/LIN channels, and 10 I²C/simplified I²C channels - all configurable via peripheral I/O redirection registers.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65 mm pitch), consumer-grade (A: -40 to +85°C), with REGC capacitor connection required (0.47–1 µF to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BAANA#U0 and R5F104ACASP#V0, the R5F104AAASP#10 offers the smallest footprint in LSSOP while delivering sufficient resources for cost-sensitive, low-complexity control tasks - making it optimal for high-volume consumer devices where PCB area and BOM cost are primary constraints.

Availability

R5F104AAASP#10 is available at Aetrix Electronics and suitable for smart thermostat sensor nodes, industrial HMI panels, home appliance motor controllers, and energy monitoring modules requiring stable component supply across production lifecycles.

Supply support for R5F104AAASP#10 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 targeting cost-sensitive, battery-operated, and general-purpose embedded control applications - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency of the R5F104AAASP#10?

The R5F104AAASP#10 supports a maximum CPU clock frequency of 32 MHz using the high-speed on-chip oscillator. At this speed, it achieves 44 DMIPS performance with a minimum instruction execution time of 0.03125 µs. The oscillator accuracy is ±1.0% across 1.8–5.5 V supply and -20 to +85°C ambient temperature - verified in the R5F104AAASP#10 datasheet section 1.1.

Does the R5F104AAASP#10 include an integrated analog-to-digital converter?

Yes, the R5F104AAASP#10 integrates a 10-bit successive-approximation ADC with 8 analog input channels. It supports internal reference voltage (1.45 V) and includes an on-chip temperature sensor. The ADC operates across the full 1.6–5.5 V supply range and is accessible via pins P20–P27 and P00/P01 - confirmed in the RL78/G14 datasheet Table 1-1 and Section 1.1 "A/D Converter".

What package type and pin count does the R5F104AAASP#10 use?

The R5F104AAASP#10 uses a 30-pin plastic LSSOP package (7.62 mm body, 0.65 mm pitch) designated by the "SP" suffix in the part number. This matches the ordering information in Table 1-1 of the RL78/G14 datasheet (R01DS0053EJ0370), where "SP" explicitly denotes LSSOP packaging for 30-pin variants under consumer-grade (A) temperature grade.

Can the R5F104AAASP#10 operate from a 1.8 V supply?

Yes, the R5F104AAASP#10 supports operation from 1.6 V to 5.5 V, including 1.8 V nominal supply. All specified peripherals - including the 10-bit ADC, UART, SPI, and timers - function correctly within this range. The datasheet confirms 1.6 V minimum VDD in Section 1.1 "Ultra-Low Power Consumption Technology" and Table 1-1 "ROM, RAM capacities".

Is there on-chip debug capability in the R5F104AAASP#10?

Yes, the R5F104AAASP#10 includes full on-chip debug functionality via the on-chip debug interface, supporting breakpoints, watchpoints, and flash programming through dedicated debug pins (P40/TOOL0, P50/P51). This capability is enabled by the integrated debug circuitry described in Section 1.1 "Code Flash Memory" and verified in the R5F104AAASP#10 pin configuration diagram (Page 9, Figure 1-1).