Renesas R5F21368CNFA#30

Overview

R5F21368CNFA#30 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 64 KB program ROM, 6 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 59 CMOS I/O ports with pull-up selection, integrated 10-bit × 12-channel A/D converter, dual 8-bit D/A converters, and hardware LIN module. It targets embedded control in consumer audio and office equipment.

For engineers reviewing the R5F21368CNFA#30 datasheet, R5F21368CNFA#30 pinout, R5F21368CNFA#30 application, or R5F21368CNFA#30 equivalent, key selection considerations include its 64-pin LQFP (PLQP0064GA-A) package, −20°C to +85°C operating range (N version), real-time clock (Timer RE), and multi-mode low-power operation (wait/stop modes down to 2.0 µA).

Technical Context

The R5F21368CNFA#30 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 fixed interrupt vector table at 0FFDCh–0FFFFh and data flash at 03000h–03FFFh.

Peripheral integration includes Timer RD (16-bit × 2, 6-pin PWM, complementary/triangular/sawtooth modulation), UART0/1/2 (I²C-capable), SSU, LIN (hardware-assisted via Timer RA + UART0), and voltage detection circuit with power-on reset and selectable thresholds.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064GA-A), 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21368CNFA#30, the CNFP variant offers identical electrical performance in a thermally distinct LQFP variant, while the CDFA variant adds extended temperature operation and enhanced reliability validation - both retain full software and peripheral compatibility.

Availability

R5F21368CNFA#30 is available at Aetrix Electronics and suitable for audio equipment control, office equipment motor drive, and consumer appliance UI applications requiring stable component supply and long-term production support.

Supply support for R5F21368CNFA#30 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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The R8C/36C Group, including R5F21368CNFA#30, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of analog peripherals, motor control timers, and communication interfaces in compact packages.

FAQ

What is the maximum operating frequency of the R5F21368CNFA#30?

The R5F21368CNFA#30 supports a maximum operating frequency of 20 MHz when powered at 2.7–5.5 V using the XIN clock source. At lower supply voltages (1.8–5.5 V), the maximum frequency is reduced to 5 MHz. The high-speed on-chip oscillator also supports adjustable frequencies, enabling flexible clocking without external crystals in less timing-critical applications.

Does the R5F21368CNFA#30 support in-system programming of its data flash?

Yes, the R5F21368CNFA#30 supports background operation (BGO) for data flash, allowing erase and write operations to proceed concurrently with program execution. This capability enables firmware updates and parameter storage without halting the main application - critical for uninterrupted operation in audio and appliance control systems.

What peripheral modules are used by the hardware LIN function in the R5F21368CNFA#30?

The hardware LIN function in the R5F21368CNFA#30 relies on the coordinated operation of Timer RA and UART0, as specified in the official Renesas datasheet. Timer RA provides accurate bit timing and synchronization, while UART0 handles serial framing and error detection - together delivering full LIN 2.1 compliance without external protocol assist chips.

How many analog input channels does the R5F21368CNFA#30 support, and what is their resolution?

The R5F21368CNFA#30 integrates a 10-bit resolution successive-approximation A/D converter with 12 analog input channels (AN0–AN11). It includes sample-and-hold functionality and sweep mode for automatic sequential conversion, making it suitable for multi-sensor monitoring in appliances and industrial nodes.

What is the operating temperature range for the R5F21368CNFA#30?

The R5F21368CNFA#30 is an N-version device rated for an operating ambient temperature range of −20°C to +85°C. This specification is confirmed in Table 1.2 and Figure 1.1 of the R01DS0018EJ0110 datasheet and applies to the PLQP0064GA-A package variant denoted by the "N" in the part number.