Renesas R5F212C7SDFP#V2

Overview

R5F212C7SDFP from Renesas Electronics is an 80-pin LQFP 16-bit R8C/Tiny Series MCU with 48 KB flash ROM, 2.5 KB RAM, and -40°C to +85°C industrial temperature grade. It integrates a 16×16→32-bit hardware multiplier, 10-bit 20-channel A/D converter, dual 8-bit D/A outputs, and six timer modules (RA–RF) supporting PWM, input capture, and real-time clock functions. Used in motor control subsystems of HVAC actuators requiring precise analog sensing and multi-phase waveform generation.

For engineers reviewing the R5F212C7SDFP datasheet, R5F212C7SDFP pinout, R5F212C7SDFP application, or R5F212C7SDFP equivalent, key selection criteria include its D-version extended temperature range, on-chip LIN module (using UART0 + timer RA), low-power stop mode (0.65 µA), and 80-pin PLQP0080KB-A package with dedicated TRDIOx pins for three-phase motor drive timing.

Technical Context

The R5F212C7SDFP implements the R8C/Tiny CPU core with 89 fundamental instructions and single-chip 1 Mbyte address space. Its clock system includes XIN (up to 20 MHz), XCIN (32 kHz), and programmable high-speed/low-speed on-chip oscillators with frequency adjustment.

Peripheral integration centers on motor control: Timer RD provides reset-synchronous and complementary PWM for three-phase inverters (6 output pins), while Timer RC supports 3-pin PWM and Timer RF delivers 3-channel TRFO outputs. The LIN module is hardware-accelerated using UART0 and timer RA, eliminating software bit-banging overhead.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080KB-A), 0.5 mm pitch, 12 mm × 12 mm body. RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F212D7SDFP and R5F212C8SDFP, the R5F212C7SDFP delivers optimal cost-performance balance for fixed-function motor control where data flash is unnecessary and code size fits within 48 KB, preserving design simplicity and qualification effort.

Availability

R5F212C7SDFP is available at Aetrix Electronics and suitable for industrial motor control, automotive HVAC subsystems, and smart appliance power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F212C7SDFP 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 applications.

The R8C/2C Group, including R5F212C7SDFP, was designed for cost-sensitive, high-reliability embedded control in consumer and industrial equipment - emphasizing integrated analog peripherals, low EMI, and extended temperature operation without sacrificing code efficiency.

FAQ

What is the maximum operating frequency of the R5F212C7SDFP?

The R5F212C7SDFP supports a maximum XIN clock frequency of 20 MHz at VCC = 3.0 to 5.5 V, delivering a minimum instruction execution time of 50 ns. At lower supply voltages (2.2 to 2.7 V), the maximum frequency reduces to 5 MHz or 10 MHz per datasheet specifications. This frequency scaling ensures reliable operation across wide voltage and temperature ranges.

Does the R5F212C7SDFP include on-chip data flash memory?

No, the R5F212C7SDFP belongs to the R8C/2C Group and does not include on-chip data flash. It provides 48 KB of program flash ROM only. Data flash (1 KB × 2 blocks) is exclusive to the R8C/2D Group, such as the R5F212D7SDFP. For applications requiring field-updatable parameters, the R8C/2D variant must be selected.

Which pins on the R5F212C7SDFP support three-phase PWM output?

The R5F212C7SDFP uses Timer RD to generate three-phase PWM waveforms on pins P2_0 through P2_7 - specifically TRDIOA0/TRDCLK, TRDIOB0, TRDIOC0, TRDIOD0, TRDIOA1, TRDIOB1, TRDIOC1, and TRDIOD1. These eight pins support reset-synchronous and complementary PWM modes essential for driving 3-phase inverter bridges with dead-time control.

What is the purpose of the MODE pin on the R5F212C7SDFP?

The MODE pin on the R5F212C7SDFP is a dedicated input that must be connected to VCC via a pull-up resistor to configure the device for normal single-chip operation. It determines boot mode selection during reset and is not user-programmable during runtime. Leaving MODE unconnected or pulled low may prevent proper initialization.

How does the R5F212C7SDFP implement LIN communication?

The R5F212C7SDFP implements LIN communication using a hardware-assisted module that combines UART0 and timer RA. This offloads LIN frame formatting, checksum calculation, and timing-critical break/delimiter detection from the CPU, enabling deterministic latency under 150 µs - meeting LIN 2.0/2.1 timing requirements without software polling or interrupts.