Renesas R5F21272SNFP#V2

Overview

R5F21272SNFP#V2 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 8 KB flash program memory, 1 KB × 2 blocks of on-chip data flash (10,000 write/erase cycles), 512 bytes RAM, and integrated 10-bit 12-channel A/D converter. It operates at up to 20 MHz (50 ns min. instruction time) across 2.2–5.5 V supply, targeting embedded control in consumer appliances and industrial equipment.

For engineers reviewing the R5F21272SNFP#V2 datasheet, R5F21272SNFP#V2 pinout, R5F21272SNFP#V2 application, or R5F21272SNFP#V2 equivalent, key selection factors include its N-version temperature range (−20 to +85°C), 32-pin LQFP package (PLQP0032GB-A), hardware LIN module (using Timer RA and UART0), dual UART interfaces, and real-time clock capability via Timer RE.

Technical Context

The R5F21272SNFP#V2 implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte unified address space. Its memory subsystem includes user-programmable flash ROM and separate data flash blocks-enabling nonvolatile parameter storage without erasing application code.

Peripheral integration includes three independent timer units (8-bit RA/RB, 16-bit RC, and RTC-capable RE), I²C bus interface, clock-synchronous serial I/O with chip select, and hardware LIN transceiver logic. All timers support prescaling, input capture, and output compare functions, while the A/D converter provides 12 analog inputs with internal reference voltage support.

Key Specifications

Pinout & Package

32-pin molded-plastic LQFP (PLQP0032GB-A) with exposed thermal pad; standard JEDEC MO-220 footprint, RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit MCU applications.

Compared with R5F21272SNFP#V2, R5F21274SNFP offers double program memory for complex firmware, while R5F21262SNFP removes data flash to reduce cost-both retain identical timing, I/O, and temperature specs for drop-in compatibility in N-version systems.

Availability

R5F21272SNFP#V2 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and automotive body electronics requiring stable component supply and long-term production continuity.

Supply support for R5F21272SNFP#V2 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 formed in 2010 through merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The R8C/27 Group-including R5F21272SNFP#V2-is designed for cost-effective, low-power embedded control in consumer and industrial applications where integrated peripherals and data flash simplify system architecture.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for R5F21272SNFP#V2?

R5F21272SNFP#V2 achieves a minimum instruction execution time of 50 ns at 20 MHz, requiring VCC = 3.0–5.5 V. At lower frequencies (e.g., 10 MHz), it supports down to 2.7 V, and at 5 MHz, operation is guaranteed from 2.2 V-making R5F21272SNFP#V2 suitable for wide-input industrial power rails.

Does R5F21272SNFP#V2 include hardware support for LIN communication?

Yes, R5F21272SNFP#V2 integrates a hardware LIN module combining UART0 and Timer RA to implement ISO 17987-4 physical layer signaling. This eliminates need for external LIN transceivers in basic slave-node applications and ensures precise bit timing compliance without CPU overhead.

How many analog input channels does the A/D converter in R5F21272SNFP#V2 support?

The R5F21272SNFP#V2 features a single 10-bit A/D converter with 12 multiplexed analog input channels (AN0–AN11), mapped across P0, P1, and P3 ports. Input selection is controlled via the ADPC register, and conversion results are stored in 16-bit result registers with optional left/right justification.

What is the data flash endurance specification for R5F21272SNFP#V2?

R5F21272SNFP#V2 specifies 10,000 write/erase cycles for its on-chip data flash (1 KB × 2 blocks). This endurance rating applies under standard operating conditions (VCC = 2.7–5.5 V, TA = −20 to +85°C) and enables reliable storage of calibration coefficients, device configuration, or usage logs across product lifetime.

Is R5F21272SNFP#V2 pin-compatible with other members of the R8C/27 Group?

Yes, all R8C/27 Group devices-including R5F21272SNFP#V2, R5F21274SNFP, and R5F21276SNFP-share identical 32-pin LQFP (PLQP0032GB-A) packaging and pin assignments. Firmware and PCB layouts are interchangeable across memory variants, simplifying design scalability and inventory management.