Renesas R5F10369ASP#55

Overview

R5F10369ASP#55 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller designed for cost-sensitive consumer and industrial embedded control. It features 12 KB code flash, 768 B RAM, 8-channel 10-bit ADC, 4-channel 16-bit TAU timer, UART, CSI, and operates from 1.8 V to 5.5 V with true low-power HALT/STOP/SNOOZE modes - deployed in smart home sensors and battery-powered metering.

For engineers reviewing the R5F10369ASP#55 datasheet, R5F10369ASP#55 pinout, R5F10369ASP#55 application, or R5F10369ASP#55 equivalent, key selection criteria include its 20-pin LSSOP package, absence of data flash (vs. R5F102x), single UART/CSI channel count, -40°C to +85°C A-grade temperature range, and lack of DMA/CRC/safety peripherals - critical for firmware portability and layout compatibility.

Technical Context

The R5F10369ASP#55 implements the RL78 CPU core with 3-stage CISC pipeline, 1 MB address space, and configurable instruction timing (0.04167 µs min @ 24 MHz). Its clock system integrates a high-speed on-chip oscillator (±5% accuracy, 1–24 MHz) and supports external crystal (1–20 MHz) via X1/X2 pins, but omits the low-speed oscillator used in watchdog timing on R5F102 variants.

Peripheral configuration is fixed per pin mapping: P10–P14 serve as primary I/O with analog inputs (ANI16–ANI20), P40–P42 support secondary analog channels (ANI21–ANI22), and P60/P61 provide I²C-compatible SCLA0/SDAA0 functionality - all without peripheral I/O redirection (PIOR = 00H default).

Key Specifications

Pinout & Package

Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10369ASP#55, the R5F10269ASP#55 adds data flash and safety features at higher cost and power, while R5F10368ASP#55 reduces flash capacity without altering peripheral set - making R5F10369ASP#55 the optimal balance of memory, analog capability, and low-power performance for mid-complexity embedded control.

Availability

R5F10369ASP#55 is available at Aetrix Electronics and suitable for smart thermostat sensor nodes, industrial panel meters, home appliance control boards, and portable medical monitors requiring stable component supply and long-term production continuity.

Supply support for R5F10369ASP#55 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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, delivering trusted embedded solutions for automotive, industrial, and IoT markets since 2010.

The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose applications - emphasizing energy efficiency, integrated analog peripherals, and rapid time-to-market for consumer and industrial control systems.

FAQ

What is the maximum operating frequency of the R5F10369ASP#55?

The R5F10369ASP#55 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal, the maximum is 20 MHz (VDD ≥ 2.7 V) or 8 MHz (VDD = 1.8–2.4 V). Instruction execution time ranges from 0.04167 µs (24 MHz) to 1 µs (1 MHz), enabling deterministic real-time response in control loops.

Does the R5F10369ASP#55 include data flash memory?

No, the R5F10369ASP#55 does not include data flash memory. This distinguishes it from the R5F102x series, which integrates 2 KB of data flash. Firmware updates for R5F10369ASP#55 require full code flash reprogramming, and runtime parameter storage must use external EEPROM or FRAM if non-volatility is required.

What are the key differences between R5F10369ASP#55 and R5F10269ASP#55?

The R5F10369ASP#55 lacks data flash, DMA, CRC, RAM guard, and SFR guard present in R5F10269ASP#55. Its high-speed on-chip oscillator has ±5% accuracy (vs. ±1% in R5F10269ASP#55), and it omits simplified I²C and second CSI channel. These omissions reduce cost and power but limit safety certification paths and peripheral flexibility.

Which analog input channels are available on the R5F10369ASP#55?

The R5F10369ASP#55 provides eight analog input channels: ANI0–ANI3 (on P20–P23), and ANI16–ANI20 (on P10–P14), plus ANI21–ANI22 (on P42–P41). All support 10-bit resolution with internal 1.45 V reference or external AVREFP/AVREFM - sufficient for multi-sensor monitoring without external signal conditioning.

Can the R5F10369ASP#55 operate from a 1.8 V supply?

Yes, the R5F10369ASP#55 is fully specified for operation from 1.8 V to 5.5 V. At 1.8 V, it supports up to 8 MHz system clock (LS mode) and retains full functionality including ADC, timers, and UART - enabling direct integration with Li-ion or two-AA battery systems without voltage regulation.