Renesas R5F21276SYFP#V2

Overview

R5F21276SYFP#V2 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 32 KB flash program memory, 1.5 KB RAM, and dual 1 KB data flash blocks. It features an 89-instruction R8C CPU core, 10-bit 12-channel ADC, hardware LIN module (using Timer RA and UART0), and operates at up to 20 MHz (50 ns min instruction time) across 2.2–5.5 V supply. It targets embedded control in office equipment and consumer appliances requiring integrated timing, serial communication, and analog sensing.

For engineers reviewing the R5F21276SYFP#V2 datasheet, R5F21276SYFP#V2 pinout, R5F21276SYFP#V2 application, or R5F21276SYFP#V2 equivalent, key selection considerations include its -40°C to 85°C industrial temperature grade (D version), 32-pin LQFP package (PLQP0032GB-A), on-chip real-time clock (Timer RE), and dual data flash blocks enabling robust firmware update and parameter storage without external EEPROM.

Technical Context

The R5F21276SYFP#V2 implements the R8C CPU core with two register banks, 20-bit program counter, and 11-bit flag register supporting interrupt priority levels 0–7. Its memory architecture includes 1 Mbyte address space, fixed interrupt vector table at 0FFDCh–0FFFFh, and dedicated SFR region (00000h–002FFh) for peripheral control.

Peripheral integration includes two UART channels (UART0/UART1), one I²C bus interface, one clock-synchronous serial I/O with chip select, Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (real-time clock + compare match), and watchdog timer with prescaler. The LIN module is hardware-accelerated using UART0 and Timer RA.

Key Specifications

Pinout & Package

Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm body, 0.8 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21276SDFP, the R5F21276SYFP#V2 offers identical functionality with tape-and-reel packaging and enhanced traceability via #V2 marking; versus R5F21274SDFP, it doubles program flash capacity while maintaining full peripheral compatibility-critical for feature-rich firmware and long-term maintainability.

Availability

R5F21276SYFP#V2 is available at Aetrix Electronics and suitable for office equipment control, consumer appliance interface, and industrial sensor node applications requiring stable component supply and long-term lifecycle support.

Supply support for R5F21276SYFP#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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The R8C/27 Group, including R5F21276SYFP#V2, was designed for cost-sensitive, resource-constrained embedded control applications demanding integrated analog, serial communication, and low-power operation in consumer and industrial equipment.

FAQ

What is the operating temperature range of the R5F21276SYFP#V2?

The R5F21276SYFP#V2 is a D-version device rated for -40°C to +85°C ambient operation, making it suitable for industrial environments and consumer appliances exposed to extended thermal conditions. This specification is confirmed in Table 1.4 of the R8C/27 Group datasheet (REJ03B0168-0210, Rev.2.10), and applies to all electrical characteristics including flash programming, ADC accuracy, and timer stability.

Does the R5F21276SYFP#V2 support hardware LIN communication?

Yes, the R5F21276SYFP#V2 integrates a hardware LIN module that combines UART0 and Timer RA to implement the LIN 2.x physical layer and protocol timing. This is explicitly documented in Section 1.2 (Table 1.2) and Figure 1.1 of the R8C/27 Group datasheet, enabling ISO 9141-2 and SAE J2602 compliance without CPU-intensive bit-banging.

How many analog input channels does the R5F21276SYFP#V2 ADC support?

The R5F21276SYFP#V2 includes a single 10-bit successive approximation register (SAR) ADC with 12 analog input channels (AN0–AN11), as specified in Tables 1.1 and 1.2 of the R8C/27 Group datasheet. These channels are multiplexed onto dedicated pins and support programmable sampling time and trigger sources including timers and software start.

What is the flash endurance rating for the R5F21276SYFP#V2 data flash blocks?

The R5F21276SYFP#V2 features two 1 KB data flash blocks rated for 10,000 erase/write cycles, as stated in Table 1.2 under "Flash Memory" specifications. This endurance level supports frequent parameter updates in applications such as calibration storage, usage counters, or configuration retention across product lifecycles.

Is the R5F21276SYFP#V2 pin-compatible with other R8C/27 Group MCUs?

Yes, all R8C/27 Group devices-including R5F21276SYFP#V2-share the identical 32-pin LQFP package (PLQP0032GB-A) and pin assignment, as shown in Figure 1.4 and Table 1.6 of the datasheet. Peripheral signal mapping, power, and reset pins are functionally consistent across variants, enabling drop-in replacement within the same memory and temperature grade.