Renesas R5F21244SNFP#V2

Overview

R5F21244SNFP#V2 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/24 Group, featuring an R8C/Tiny Series CPU core, 16 KB flash program memory, 1 KB RAM, and operation at up to 20 MHz (50 ns min instruction time). It integrates a 10-bit 12-channel ADC, dual UARTs, I²C interface, hardware LIN module, four 8-/16-bit timers, and real-time clock functionality - deployed in consumer appliance control systems requiring compact, low-power embedded processing.

For engineers reviewing the R5F21244SNFP#V2 datasheet, R5F21244SNFP#V2 pinout, R5F21244SNFP#V2 application, or R5F21244SNFP#V2 equivalent, key selection criteria include its 52-pin LQFP package (PLQP0052JA-A), -20°C to +85°C N-version temperature grade, absence of on-chip data flash (distinguishing it from R8C/25 Group), and support for wait/stop modes with sub-µA current consumption.

Technical Context

The R5F21244SNFP#V2 implements the R8C/Tiny CPU core with 89 fundamental instructions and a 1 Mbyte linear address space. Its peripheral set includes two UART channels (UART0/UART1), one I²C bus interface, one clock-synchronous serial I/O with chip select, and a hardware LIN module built around Timer RA and UART0.

It features three independent clock generation circuits: XIN-based (up to 20 MHz), high-speed on-chip oscillator (frequency-adjustable), and XCIN-based 32 kHz real-time clock source. The device supports interrupt priority levels (0–7), 15-bit watchdog timer, and voltage detection with on-chip power-on reset - all configured for deterministic real-time control in resource-constrained environments.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pin pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21244SNFP#V2, R5F21245SNFP offers scalable code space while maintaining identical pinout and peripheral compatibility, and R5F21244SDFP delivers guaranteed operation across wider thermal ranges - both preserve software investment and minimize qualification effort.

Availability

R5F21244SNFP#V2 is available at Aetrix Electronics and suitable for home appliance control, office equipment interface, and consumer audio remote applications requiring stable component supply over multi-year production cycles.

Supply support for R5F21244SNFP#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 consumer markets.

The R8C/24 Group, including R5F21244SNFP#V2, was designed for cost-sensitive, low-power embedded control in appliances and peripherals - emphasizing integration, code efficiency, and long-term supply stability.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for R5F21244SNFP#V2?

R5F21244SNFP#V2 operates at up to 20 MHz with VCC = 3.0–5.5 V. At 10 MHz, it supports VCC = 2.7–5.5 V, and at 5 MHz, VCC = 2.2–5.5 V. Minimum instruction execution time is 50 ns under 20 MHz/3.0–5.5 V conditions. These ratings are specified in the official Renesas R8C/24 Group datasheet (REJ03B0117-0300, Rev.3.00).

Does R5F21244SNFP#V2 include on-chip data flash memory?

No, R5F21244SNFP#V2 belongs to the R8C/24 Group and contains only program flash memory (16 KB). It does not include dedicated data flash blocks. Data flash (1 KB × 2) is exclusive to the R8C/25 Group (e.g., R5F21254SNFP). This distinction is explicitly stated in Section 1 of the R8C/24 and R8C/25 Group datasheet.

What package type and pin count does R5F21244SNFP#V2 use?

R5F21244SNFP#V2 uses the PLQP0052JA-A package: a 52-pin LQFP with 0.65 mm pin pitch and 10 mm × 10 mm body. This is confirmed in Table 1.3 (Product Information for R8C/24 Group) and Figure 1.4 (Pin Assignments) of the Renesas datasheet REJ03B0117-0300.

Which communication interfaces are supported by R5F21244SNFP#V2?

R5F21244SNFP#V2 supports two UART channels (UART0 and UART1), one I²C bus interface, one clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO), and a hardware LIN module implemented using Timer RA and UART0. All are detailed in Tables 1.1 and 1.5 of the official datasheet.

What is the operating temperature grade of R5F21244SNFP#V2?

R5F21244SNFP#V2 is an N-version device rated for -20°C to +85°C operating ambient temperature. This is indicated by the "N" in the part number suffix and confirmed in Table 1.3 and Section 1.4 of the R8C/24 Group datasheet (REJ03B0117-0300).