Renesas R5F10267GSP#55

Overview

R5F10267GSP#55 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller with 4 KB code flash, 2 KB data flash, and 256 B RAM, operating from 1.8 V to 5.5 V across –40°C to +105°C industrial temperature range. It integrates a 10-bit 11-channel ADC, 4-channel 16-bit TAU timer, UART/CSI/I²C serial interfaces, DMA controller, and on-chip high-accuracy ±1.0% 24 MHz oscillator - deployed in battery-powered sensor nodes and industrial control panels requiring deterministic low-power operation.

For engineers reviewing the R5F10267GSP#55 datasheet, R5F10267GSP#55 pinout, R5F10267GSP#55 application, or R5F10267GSP#55 equivalent, this page delivers verified technical context, package-specific pin functions, real-world use-value analysis for embedded timing, power, and interface design, and validated alternative selection guidance aligned with Renesas' documented RL78/G12 family specifications.

Technical Context

The R5F10267GSP#55 implements the RL78 CPU core with 3-stage CISC pipeline, supporting instruction execution times from 0.04167 µs (24 MHz on-chip oscillator) to 1 µs (1 MHz), and features dedicated hardware for BCD correction, CRC calculation, and self-programming with flash shield window protection. Its memory architecture separates 4 KB code flash (1 KB block size) from 2 KB data flash enabling background operation during program execution.

Power management includes HALT, STOP, and SNOOZE modes achieving 63 µA/MHz active current, plus on-chip POR and 12-level voltage detector for robust reset and brown-out handling. Peripheral I/O redirection via PIOR register enables flexible pin function assignment without PCB changes, while key return (KR0–KR5), analog inputs (ANI0–ANI3, ANI16–ANI22), and programmable clock/buzzer outputs support direct human-machine and sensor interface integration.

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 R5F10267GSP#55, R5F10268GSP#55 offers scalable memory for evolving firmware while preserving identical low-power behavior and pin compatibility; R5F10367GSP#55 trades data flash, DMA, and safety features for lower unit cost but cannot support field-upgradable parameters or IEC 61508-compliant designs.

Availability

R5F10267GSP#55 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, programmable logic relays, and factory floor I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F10267GSP#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 applications, with over 40 years of microcontroller innovation.

The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose embedded systems - emphasizing energy efficiency, integrated analog peripherals, and simplified development for industrial controls and consumer appliances.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F10267GSP#55?

The R5F10267GSP#55 supports up to 24 MHz operation using its high-speed on-chip oscillator, achieving a minimum instruction execution time of 0.04167 µs. When using the external crystal oscillator (X1), maximum frequency is 20 MHz with 0.05 µs minimum execution time. These values are confirmed in the RL78/G12 datasheet Rev.2.50, Section 1.1 and Table 1-1.

Does the R5F10267GSP#55 include data flash memory, and what is its endurance rating?

Yes, the R5F10267GSP#55 includes 2 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) at VDD = 1.8–5.5 V. It supports background operation (BGO), allowing program execution from code flash while rewriting data flash - a capability confirmed in Section 1.1 "Data flash memory" and Section 1.3.1 of the R01DS0193EJ0250 datasheet.

What are the key differences between R5F10267GSP#55 and R5F10367GSP#55?

The R5F10267GSP#55 includes 2 KB data flash, DMA controller, CRC engine, RAM/SFR guard, and ±1.0% oscillator accuracy, whereas R5F10367GSP#55 omits all these features and has ±5.0% oscillator accuracy. Both share identical pinout and package, but R5F10367GSP#55 is restricted to consumer-grade temperature range unless explicitly marked G-grade - differences documented in Sections 1.3.1–1.3.3 of R01DS0193EJ0250.

Can the R5F10267GSP#55 operate from a 1.8 V supply, and what analog features remain functional at that voltage?

Yes, the R5F10267GSP#55 operates fully from 1.8 V to 5.5 V. At 1.8 V, the 10-bit 11-channel ADC remains functional with internal 1.45 V reference, and the high-speed on-chip oscillator maintains ±1.5% accuracy (TA = –40°C to –20°C) per Section 1.3.2. All I/O pins retain TTL input buffer and N-ch open-drain capability, enabling direct interface with 1.8 V logic devices.

How many serial communication interfaces does the R5F10267GSP#55 support, and which protocols are implemented?

The R5F10267GSP#55 supports one UART channel, two CSI (SPI-compatible) channels, and two simplified I²C channels - all implemented in hardware SAU0 peripheral. It also includes one full I²C bus interface (IICA0). These are confirmed in Section 1.7 "Outline of Functions" and Figure 1-6 block diagram of the R01DS0193EJ0250 datasheet.