Renesas R5F21262SNFP#X6

Overview

R5F21262SNFP#X6 from Renesas Electronics is a 16-bit R8C/26 Group single-chip microcontroller with 8 KB flash ROM, 512 bytes RAM, 12-channel 10-bit A/D converter, UART0/UART1 serial interfaces, and hardware LIN module - designed for embedded control in consumer appliances and industrial equipment operating at -20 to +85°C.

For engineers reviewing the R5F21262SNFP#X6 datasheet, R5F21262SNFP#X6 pinout, R5F21262SNFP#X6 application, or R5F21262SNFP#X6 equivalent, this MCU delivers deterministic real-time operation via its 89-instruction R8C CPU core, on-chip oscillators (high-speed adjustable and 32 kHz XCIN), and low-power stop mode (0.7 µA @ 3.0 V), supporting robust firmware development for cost-sensitive, space-constrained designs.

Technical Context

The R5F21262SNFP#X6 implements the R8C CPU core with 20-bit program counter, dual register banks, and 11-bit flag register supporting 7-level interrupt priority. It integrates three clock generation circuits: XIN-based crystal/resonator oscillator, high-speed on-chip oscillator with frequency adjustment, and XCIN/XCOUT 32 kHz RTC oscillator (N version).

Peripheral subsystems include Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (real-time clock output), two UART channels, one I²C bus interface, one clock synchronous serial I/O with chip select, and LIN protocol support using Timer RA and UART0 - all mapped to a fixed 32-pin LQFP package with verified pin functions per Renesas REJ03B0168-0210.

Key Specifications

Pinout & Package

Package: 32-pin molded-plastic LQFP (PLQP0032GB-A, 7 mm × 7 mm, 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 R5F21262SNFP#X6, R5F21264SNFP offers expanded memory for complex control algorithms, while R5F21272SNFP adds dedicated data flash for reliable parameter retention - both retain identical pinout, peripherals, and low-power behavior, enabling scalable design reuse.

Availability

R5F21262SNFP#X6 is available at Aetrix Electronics and suitable for home appliance control, office equipment interface, and consumer audio system designs requiring stable component supply across multi-year production cycles.

Supply support for R5F21262SNFP#X6 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, and power solutions for industrial, automotive, and consumer markets.

The R8C/26 Group, including R5F21262SNFP#X6, was engineered for cost-optimized, low-power embedded control in appliances and office equipment - emphasizing integration of A/D, UART, LIN, and RTC in a compact 32-pin LQFP.

FAQ

What is the maximum operating frequency and supply voltage range for R5F21262SNFP#X6?

R5F21262SNFP#X6 operates up to 20 MHz with VCC = 3.0–5.5 V (per Renesas REJ03B0168-0210 Table 1.1). At lower frequencies (e.g., 10 MHz), it supports down to 2.7 V; the N version allows 2.2 V minimum at 5 MHz. The device uses an on-chip high-speed oscillator with frequency adjustment, eliminating need for external crystal in many applications.

Does R5F21262SNFP#X6 support hardware LIN communication?

Yes, R5F21262SNFP#X6 integrates a hardware LIN module compliant with LIN 2.0/SAE J2602, implemented using Timer RA and UART0. This enables direct LIN bus communication without external transceivers - confirmed in Section 1.2 "Peripheral Functions" and Figure 1.1 block diagram of the R8C/26 Group datasheet.

What are the A/D converter specifications of R5F21262SNFP#X6?

R5F21262SNFP#X6 features a single 10-bit successive-approximation A/D converter with 12 input channels (AN0–AN11). Conversion time is 16 µs per channel, referenced to either internal VCC or external VREF applied to pin P4_2. Input voltage range is 0 V to AVCC, with AVCC requiring separate decoupling from VCC.

Which package type and pin count does R5F21262SNFP#X6 use?

R5F21262SNFP#X6 uses a 32-pin molded-plastic LQFP package designated PLQP0032GB-A (7 mm × 7 mm, 0.8 mm pitch). Pin assignments and functions are fully documented in Figure 1.4 and Table 1.5 of Renesas document REJ03B0168-0210, including dedicated A/D, UART, I²C, and LIN signal routing.

Is R5F21262SNFP#X6 compatible with the R8C/27 Group devices like R5F21272SNFP?

R5F21262SNFP#X6 is pin-compatible and functionally identical to R8C/27 Group devices except for data flash presence: R5F21262SNFP#X6 has program flash only, while R5F21272SNFP adds 1 KB × 2 data flash. All peripherals, clock systems, pinouts, and electrical specs match - enabling drop-in replacement where data flash is unused.