Renesas R5F10267ASP#35

Overview

R5F10267ASP#35 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 integrates 4 KB code flash, 2 KB data flash, 256 B RAM, 10-bit A/D converter (11 channels), UART, two CSI channels, two simplified I²C channels, four 16-bit timer channels, and operates from 1.8 V to 5.5 V across –40°C to +85°C - enabling use in battery-powered sensor nodes and smart appliance control panels.

For engineers reviewing the R5F10267ASP#35 datasheet, R5F10267ASP#35 pinout, R5F10267ASP#35 application, or R5F10267ASP#35 equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options - all aligned with Renesas' R01DS0193EJ0250 Rev.2.50 specification and RL78/G12 family documentation.

Technical Context

The R5F10267ASP#35 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports dual-clock operation: high-speed on-chip oscillator (1–24 MHz, ±1.0% accuracy at –20°C to +85°C) and external crystal/ceramic (1–20 MHz), with HALT/STOP/SNOOZE low-power modes achieving 63 μA/MHz active current.

Its peripheral set includes DMA controller (2 channels), CRC calculation unit, RAM guard, SFR guard, and background operation (BGO) for data flash rewriting while executing code. The device uses PIOR register-based peripheral I/O redirection, enabling flexible pin assignment for UART, CSI, I²C, and timer functions without hardware redesign.

Key Specifications

Pinout & Package

Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3 per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10267ASP#35, R5F10268ASP#35 offers scalable memory headroom within identical footprint and safety features, while R5F10367ASM#15 trades reliability and data retention for lower unit cost - making the former a seamless upgrade and the latter a risk-aware cost-down option.

Availability

R5F10267ASP#35 is available at Aetrix Electronics and suitable for smart home sensors, industrial HMIs, white goods motor controllers, and energy metering subsystems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F10267ASP#35 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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

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

FAQ

What is the maximum operating frequency of the R5F10267ASP#35?

The R5F10267ASP#35 supports a maximum high-speed on-chip oscillator frequency of 24 MHz and an external crystal input up to 20 MHz. At 24 MHz operation, the minimum instruction execution time is 0.04167 µs. Its actual system clock is configurable via clock generator settings, and performance is validated across the full 1.8–5.5 V supply range per R01DS0193EJ0250 Rev.2.50.

Does the R5F10267ASP#35 include data flash memory?

Yes, the R5F10267ASP#35 includes 2 KB of data flash memory with background operation (BGO) support, enabling concurrent code execution and flash rewriting. It guarantees 1,000,000 rewrite cycles at VDD = 1.8–5.5 V and supports voltage-independent reprogramming - a feature confirmed in R01DS0193EJ0250 Rev.2.50 Section 1.1 and Table 1-1.

What package type and pin count does the R5F10267ASP#35 use?

The R5F10267ASP#35 uses a 20-pin plastic LSSOP package (4.4 × 6.5 mm, 0.65-mm pitch), identified by the "SP" suffix and "#35" packaging code indicating tray or tube delivery. This matches Renesas' PLSP0020JB-A land pattern and is distinct from TSSOP-20 (ASM) and HWQFN-24 (ANA) variants in the RL78/G12 family.

Can the R5F10267ASP#35 operate at 1.8 V supply voltage?

Yes, the R5F10267ASP#35 is fully specified to operate from 1.8 V to 5.5 V across its entire temperature range (–40°C to +85°C). At 1.8 V, it supports low-speed main mode (up to 8 MHz) and maintains full functionality of ADC, timers, UART, and I/O - as documented in Section 1.1 and Section 2.1 of R01DS0193EJ0250 Rev.2.50.

Which safety features are implemented in the R5F10267ASP#35?

The R5F10267ASP#35 implements CRC calculation unit, RAM guard, and SFR guard - hardware-level safety mechanisms that detect memory corruption and prevent unauthorized register writes. These features are exclusive to R5F102 products (not present in R5F103 series) and are confirmed in Section 1.3.3 and Figure 1-6 of R01DS0193EJ0250 Rev.2.50.