Renesas R5F21247SDFP#V2

Overview

R5F21247SDFP#V2 from Renesas Electronics is a 16-bit R8C/Tiny Series microcontroller in a 52-pin LQFP package, operating from 2.2 V to 5.5 V with -40°C to +85°C industrial temperature range (D version). It integrates 48 KB flash program memory, 2.5 KB RAM, a 10-bit 12-channel ADC, dual UARTs, I²C, LIN hardware module, and multiple timers including real-time clock (Timer RE). It targets embedded control in office equipment and consumer appliances requiring low-power operation and mixed-signal integration.

For engineers reviewing the R5F21247SDFP#V2 datasheet, R5F21247SDFP#V2 pinout, R5F21247SDFP#V2 application, or R5F21247SDFP#V2 equivalent, key selection criteria include its D-version temperature rating, 52-pin PLQP0052JA-A package compatibility, flash endurance (1,000 cycles), wait-mode current (2.0 µA at 3.0 V), and peripheral set including hardware LIN and dual UART support.

Technical Context

The R5F21247SDFP#V2 implements the R8C/Tiny CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V). Its memory architecture includes on-chip flash for program storage and SRAM for data, with no data flash-distinguishing it from R8C/25 Group variants.

Peripheral integration centers on mixed-signal control: Timer RD provides 16-bit input capture/output compare on two channels; Timer RE delivers real-time clock with compare match; and the LIN module uses Timer RA and UART0 for ISO-9141/SAE J2602-compliant communication without software overhead.

Key Specifications

Pinout & Package

Package: 52-pin molded-plastic LQFP (PLQP0052JA-A), 0.65 mm pin pitch, 10 mm × 10 mm body size.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21247SDFP#V2, R5F21247SNFP lacks industrial temperature rating but offers identical functionality at lower cost, while R5F21257SDFP adds data flash for persistent configuration storage-making it preferable for systems requiring runtime parameter retention.

Availability

R5F21247SDFP#V2 is available at Aetrix Electronics and suitable for office equipment control, consumer appliance HMI, and industrial sensor nodes requiring stable component supply and long-term industrial temperature support.

Supply support for R5F21247SDFP#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 infrastructure markets.

The R8C/24 Group, including R5F21247SDFP#V2, was designed for cost-sensitive, low-power embedded control in consumer and office electronics-emphasizing integrated peripherals, small footprint, and ease of system integration.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for R5F21247SDFP#V2?

R5F21247SDFP#V2 achieves a minimum instruction execution time of 50 ns at 20 MHz, requiring VCC = 3.0 V to 5.5 V. At 10 MHz, it operates down to 2.7 V, and at 5 MHz, down to 2.2 V. These ranges are defined in the electrical characteristics section of the R8C/24 Group datasheet (Rev.3.00), ensuring reliable timing across its specified industrial temperature range.

Does R5F21247SDFP#V2 include on-chip data flash memory?

No, R5F21247SDFP#V2 belongs to the R8C/24 Group and contains only program flash memory (48 KB) and SRAM (2.5 KB). It does not include dedicated data flash blocks. Data flash is exclusive to the R8C/25 Group (e.g., R5F21257SDFP), which adds 1 KB × 2 data flash for non-volatile parameter storage.

Which package type and pin count does R5F21247SDFP#V2 use?

R5F21247SDFP#V2 uses the PLQP0052JA-A package: a 52-pin LQFP with 0.65 mm pin pitch and 10 mm × 10 mm body size. This matches the "FP" suffix in the part number and is confirmed in Table 1.3 of the R8C/24 Group documentation.

What peripheral interfaces are supported by R5F21247SDFP#V2 for sensor communication?

R5F21247SDFP#V2 supports I²C bus (SDA/SCL), UART (two channels), and clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO). These enable direct connection to digital sensors (e.g., temperature, humidity ICs), analog sensors via its 12-channel 10-bit ADC, and legacy serial devices without external level shifters.

Is hardware LIN functionality available on R5F21247SDFP#V2, and how is it implemented?

Yes, R5F21247SDFP#V2 includes a hardware LIN module compliant with LIN 1.3/2.0/2.1 standards. It is implemented using UART0 for data framing and Timer RA for baud rate generation and synchronization-offloading protocol handling from firmware and ensuring deterministic timing critical for automotive subsystems.