Renesas R5F10269ASP#55

Overview

R5F10269ASP#55 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller with 12 KB code flash, 2 KB data flash, 768 B RAM, and integrated 10-bit A/D converter (11 channels), operating from 1.8 V to 5.5 V across –40°C to +85°C. It features dual serial interfaces (2 CSI, 2 I²C, 1 UART), 4-channel 16-bit TAU timer, DMA controller, and high-accuracy ±1.0% on-chip oscillator (24 MHz max) - deployed in battery-powered sensor nodes and industrial control panels requiring deterministic real-time response.

For engineers reviewing the R5F10269ASP#55 datasheet, R5F10269ASP#55 pinout, R5F10269ASP#55 application, or R5F10269ASP#55 equivalent, this page delivers verified functional specifications, validated peripheral mapping, confirmed package dimensions (LSSOP20, 4.4 × 6.5 mm), and precise alternative-part comparisons for production-grade selection.

Technical Context

The R5F10269ASP#55 implements the RL78 CPU core with 3-stage CISC pipeline, 1 MB address space, and configurable instruction execution time (0.04167 µs at 24 MHz). Its power architecture supports HALT, STOP, and SNOOZE modes enabling 63 µA/MHz active current draw, while the on-chip voltage detector offers 12-level reset/interrupt thresholds across 1.88–4.06 V.

Peripherals include two CSI channels supporting SPI-like operation, two simplified I²C interfaces (IIC00/IIC01), one UART0, 11-channel 10-bit A/D converter with internal 1.45 V reference and temperature sensor, and CRC hardware accelerator - all accessible via dedicated pins or peripheral I/O redirection register (PIOR) remapping.

Key Specifications

Pinout & Package

Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), JEDEC MO-153 compliant, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10269ASP#55, R5F10268ASP#55 reduces code memory by 8 KB but retains identical low-power performance and peripheral integration, while R5F10369ASP#55 sacrifices data flash, DMA, and CRC to achieve lower unit cost - making it viable only in non-field-upgradable, timing-tolerant designs.

Availability

R5F10269ASP#55 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial motor controllers, medical wearable monitors, and energy meter front-ends requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F10269ASP#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with annual revenue exceeding $10 billion and operations in over 20 countries.

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 battery-operated and industrial control systems.

FAQ

What is the maximum operating frequency and associated power consumption of the R5F10269ASP#55?

The R5F10269ASP#55 achieves 24 MHz maximum operation using its high-speed on-chip oscillator with ±1.0% accuracy at –20°C to +85°C. At this frequency and 3.3 V supply, typical active current is 63 µA/MHz - resulting in ~1.5 mA total active draw. Power scales linearly with frequency, enabling dynamic voltage/frequency scaling for further optimization.

Does the R5F10269ASP#55 support in-system programming and secure firmware updates?

Yes, the R5F10269ASP#55 supports full in-system programming via on-chip debug interface and includes flash shield window functionality to prevent unauthorized read-out during programming. Its 2 KB data flash supports background operation (BGO), allowing firmware updates to execute while real-time tasks continue uninterrupted - critical for field-deployed devices.

How many analog input channels does the R5F10269ASP#55 provide, and what reference options are available?

The R5F10269ASP#55 provides 11 analog input channels (ANI0–ANI3, ANI16–ANI22) with 10-bit resolution. Reference options include external differential (AVREFP/AVREFM), internal 1.45 V bandgap, or VDD - selectable per channel. The integrated temperature sensor shares the same ADC resource and requires no external components.

Can the R5F10269ASP#55 operate reliably across extended temperature ranges such as –40°C to +105°C?

No - the R5F10269ASP#55 is rated for –40°C to +85°C (A-grade specification). For operation up to +105°C, Renesas offers the R5F10269GSP variant (same pinout and functionality), which undergoes extended-temperature qualification and uses G-grade packaging. Electrical parameters like oscillator accuracy and supply current are guaranteed across the full –40°C to +105°C range only for G-grade parts.

What serial communication interfaces are implemented on the R5F10269ASP#55, and how are they physically mapped?

The R5F10269ASP#55 integrates two CSI channels (SPI-compatible), two simplified I²C channels (IIC00/IIC01), and one UART0 - all mapped to dedicated pins (e.g., P10–P12 for CSI00/IIC00/UART0, P41–P42 for CSI01/IIC01). These interfaces share no physical pins; each operates independently with full hardware control, eliminating software bit-banging overhead.