Renesas R5F212B7SNFA#U0

Overview

R5F212B7SNFA#U0 from Renesas Electronics is a 16-bit R8C/Tiny Series microcontroller in the R8C/2B Group, featuring 48 KB flash program memory, 1 KB × 2 on-chip data flash, 2.5 KB RAM, and operation at up to 20 MHz (VCC = 3.0–5.5 V). It integrates 12-channel 10-bit ADC, dual 8-bit DACs, six timer modules (including three-phase PWM-capable Timer RD), LIN hardware interface, and UART/I²C/SSU serial interfaces. It targets embedded control in consumer appliances requiring low-power operation and integrated analog peripherals.

For engineers reviewing the R5F212B7SNFA#U0 datasheet, R5F212B7SNFA#U0 pinout, R5F212B7SNFA#U0 application, or R5F212B7SNFA#U0 equivalent, key selection considerations include its 64-pin LQFP package (PLQP0064GA-A), -20°C to +85°C industrial temperature grade (N version), on-chip data flash endurance (10,000 erase/write cycles), real-time clock (Timer RE), and hardware LIN compliance using UART0 and Timer RA.

Technical Context

The R5F212B7SNFA#U0 implements the R8C/Tiny CPU core with 89 fundamental instructions and a dedicated 16×16→32-bit multiplier for efficient arithmetic. Its memory architecture separates 48 KB flash program ROM from two independent 1 KB data flash blocks-enabling field firmware updates without erasing application code.

Peripheral integration includes Timer RD with reset-synchronous and complementary PWM modes for motor control, a hardware LIN transceiver co-located with UART0 and Timer RA, and simultaneous support for I²C bus and SSU via shared pins. Clock sources comprise XIN oscillator (up to 20 MHz), high-speed/low-speed on-chip oscillators, and 32 kHz XCIN crystal input for RTC operation.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064GA-A), 0.8 mm pin pitch, 14 mm × 14 mm body, exposed pad not specified. RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F212A7SNFA#U0, R5F212B7SNFA#U0 adds critical data flash for field updates; compared with R5F212B8SNFA#U0, it trades ROM capacity for cost-sensitive deployments where 48 KB suffices - making R5F212B7SNFA#U0 optimal for calibrated appliance control with moderate firmware footprint.

Availability

R5F212B7SNFA#U0 is available at Aetrix Electronics and suitable for home appliance motor control, smart HVAC sensor nodes, office equipment keypad interfaces, and consumer audio signal processing requiring stable component supply across extended production lifecycles.

Supply support for R5F212B7SNFA#U0 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/2B Group, including R5F212B7SNFA#U0, was designed for cost-sensitive, low-power embedded control in white goods and office equipment - emphasizing integrated analog peripherals, motor control timers, and communication interfaces to minimize system-level component count.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F212B7SNFA#U0?

The R5F212B7SNFA#U0 operates at up to 20 MHz when supplied at 3.0–5.5 V, 10 MHz at 2.7–5.5 V, and 5 MHz at 2.2–5.5 V. Its minimum supply voltage of 2.2 V enables robust operation under brownout conditions common in AC-powered appliances with unregulated supplies - a key reliability feature confirmed in Renesas' R8C/2B Group specification tables.

Does the R5F212B7SNFA#U0 include on-chip data flash, and what is its endurance rating?

Yes, the R5F212B7SNFA#U0 includes 1 KB × 2 on-chip data flash blocks rated for 10,000 erase/write cycles - distinct from its 48 KB program flash (rated for 1,000 cycles). This separation allows frequent parameter updates (e.g., calibration coefficients) without degrading main firmware integrity, as documented in Table 1.4 of the R8C/2B Group datasheet.

Which timer modules in the R5F212B7SNFA#U0 support three-phase motor control?

Timer RD is the dedicated three-phase PWM generator in the R5F212B7SNFA#U0, providing six output pins (P2_0–P2_5) with reset-synchronous and complementary PWM modes, plus sawtooth/triangular wave modulation. This capability is explicitly defined in Tables 1.3 and 1.4 for the R8C/2B Group and enables direct inverter bridge control without external logic.

How does the hardware LIN module function in the R5F212B7SNFA#U0?

The R5F212B7SNFA#U0 implements hardware LIN using UART0 for serial framing and Timer RA for precise baud rate timing and synchronization - eliminating software-based bit-banging. This configuration meets LIN 2.1 physical layer requirements and is validated in Renesas' R8C/2B Group documentation as a single-chip LIN slave solution.

What package type and pin count does the R5F212B7SNFA#U0 use?

The R5F212B7SNFA#U0 uses a 64-pin LQFP package with code PLQP0064GA-A (0.8 mm pitch, 14 mm × 14 mm body), as confirmed in Table 1.6 and Figure 1.2 of the R8C/2B Group datasheet. This package is pin-compatible with other R8C/2B variants in the FA suffix family, enabling scalable design reuse across memory configurations.