Renesas R5F21344CDFP#50

Overview

R5F21344CDFP#50 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 16 KB program flash, 1.5 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It operates at up to 20 MHz (VCC = 2.7–5.5 V), features 43 CMOS I/O ports with pull-up selection, and integrates UART0/1/2, I²C, LIN, 10-bit × 12-channel ADC, dual 8-bit DACs, and six timer modules (RA–RE + RD dual 16-bit) for motor control and real-time clocking in consumer appliance systems.

For engineers reviewing the R5F21344CDFP#50 datasheet, R5F21344CDFP#50 pinout, R5F21344CDFP#50 application, or R5F21344CDFP#50 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade (D version), 48-pin LQFP package (PLQP0048KB-A), integrated LIN hardware module, BGO-enabled data flash for firmware updates, and low-power stop mode (2.0 µA).

Technical Context

The R5F21344CDFP#50 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte (00000h–FFFFFh), with program ROM at 0C000h–0FFFFh, data flash at 03000h–03FFFh, and RAM at 00400h–009FFh.

Peripheral integration includes three UART channels (UART0/1/2), one I²C bus (shared with SSU), hardware LIN using Timer RA and UART0, 12-channel 10-bit ADC with sample-and-hold and sweep mode, two 8-bit DACs, and Timer RD with complementary PWM for three-phase motor drive (6-pin output, triangular/sawtooth modulation).

Key Specifications

Pinout & Package

Package: 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21345CDFP#50, the R5F21344CDFP#50 offers optimal cost/performance balance for fixed-function appliances; versus R5F21344CNFP#50, it delivers guaranteed operation down to -40°C for harsh industrial deployments without peripheral trade-offs.

Availability

R5F21344CDFP#50 is available at Aetrix Electronics and suitable for home appliance motor control, industrial sensor hubs, consumer audio front-ends, and smart power outlet controllers requiring stable component supply and long-term industrial temperature-grade availability.

Supply support for R5F21344CDFP#50 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R8C/34C Group, including the R5F21344CDFP#50, was designed for cost-sensitive, low-power embedded control in consumer and industrial equipment - emphasizing integrated peripherals, BGO flash, and robust EMI/EMS performance.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F21344CDFP#50?

The R5F21344CDFP#50 operates at up to 20 MHz when supplied with 2.7–5.5 V, and supports reduced-frequency operation down to 5 MHz at 1.8–5.5 V. Its industrial-grade D version guarantees full functionality across -40°C to +85°C ambient temperatures, making it suitable for demanding environments where thermal stability is critical. The high-speed on-chip oscillator provides flexible clock sourcing without external components.

Does the R5F21344CDFP#50 support background operation (BGO) for data flash programming?

Yes, the R5F21344CDFP#50 supports Background Operation (BGO) for its 4 KB data flash (1 KB × 4 blocks), allowing simultaneous CPU execution and flash erase/write operations. This capability is essential for over-the-air firmware updates and runtime parameter storage without system interruption. BGO is enabled via the FLWE bit in the FLMCR register and managed through the on-chip debug interface.

How many UART, I²C, and LIN interfaces does the R5F21344CDFP#50 integrate?

The R5F21344CDFP#50 integrates three UART channels (UART0, UART1, UART2), one I²C-bus interface (shared with the Synchronous Serial Unit), and a dedicated hardware LIN module that combines Timer RA and UART0 to implement LIN 2.1 protocol without external transceivers. UART2 additionally supports multiprocessor communication and I²C-bus mode, enabling flexible multi-protocol connectivity in space-constrained designs.

What timer resources are available on the R5F21344CDFP#50 for motor control applications?

The R5F21344CDFP#50 provides six timer modules optimized for motor control: Timer RA (8-bit period/pulse), RB (8-bit PWM), RC (16-bit capture/compare), RD (dual 16-bit with 6-pin complementary PWM, three-phase waveform generation, and dead-time insertion), and RE (8-bit real-time clock). Timer RD's complementary PWM mode directly supports BLDC and PMSM drives with synchronized high-/low-side gate signals and fault protection inputs.

What is the ADC resolution, channel count, and key operational modes supported by the R5F21344CDFP#50?

The R5F21344CDFP#50 features a 10-bit successive-approximation ADC with 12 analog input channels (AN0–AN11), sample-and-hold circuitry, and sweep mode for automatic sequential conversion across selected channels. It supports external trigger (ADTRG pin), software start, and interrupt-driven completion notification. Conversion time is 1.6 µs per channel at f(XIN) = 20 MHz, enabling high-speed sensor polling in closed-loop control systems.