Program Memory Type:	FLASH
Base Part Number:	R5F21321
Supplier Device Package:	20-LSSOP
Package / Case:	20-LSSOP (0.173", 4.40mm Width)
Operating Temperature:	-20°C ~ 85°C (TA)
Oscillator Type:	Internal
Data Converters:	A/D 4x10b
Voltage - Supply (Vcc/Vdd):	1.8 V ~ 5.5 V
RAM Size:	512 x 8
EEPROM Size:	--
Series:	R8C/3x/32C
Program Memory Size:	4KB (4K x 8)
Number of I/O:	15
Peripherals:	POR, PWM, Voltage Detect, WDT
Connectivity:	I²C, LINbus, SIO, SSU, UART/USART
Speed:	20MHz
Core Size:	16-Bit
Core Processor:	R8C
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The R5F21321CNSP#W4 is a 32-bit microcontroller (MCU) specifically designed for embedded systems applications and projects. It has an advanced range of features, making it one of the most popular and reliable MCUs available in the market. It is one of the few MCUs that can be integrated with to create embedded systems with complex functionality. Furthermore, it is compatible with a comprehensive range of software development tools, making it an ideal choice for both hobbyists and professional application developers. This article looks at the working principles and application fields of the R5F21321CNSP#W4.

Application Fields

The R5F21321CNSP#W4 is extremely versatile, meaning that it can be used in a wide variety of embedded systems, from those involving needs of simple control applications to those of complex, real-time operations. Among its many applications, the R5F21321CNSP#W4 has proven to be invaluable in the automotive industry, where it has been used to control a wide variety of vehicle electronics, including navigation systems, brake systems, and safety equipment. Further, its ability to communicate accurately with other embedded systems via CAN, LIN and LIN-Flexbus allows it to be used in automation applications, in medical and consumer electronics, as well as in robotics and industrial automation.

Working Principles

The R5F21321CNSP#W4 features a 32-Bit ARM Cortex-M3 core, with a frequency of 72Mhz, which ensures its working is speedy, efficient and accurate. It also has an abundance of integrated peripherals, including an Analog/Digital Converter, UART, CAN/LIN Controller, Real-Time Event Controller, and Clock Generator, which makes it suitable for a variety of embedded applications. Furthermore, the R5F21321CNSP#W4 is supported by a comprehensive range of software development tools, making it viable for both advanced and simple applications. Additionally, it is highly reliable, with a minimum operating temperature of -40℃ and maximum of 85℃, as well as a maximum operating voltage of 3.6V.

Conclusion

The R5F21321CNSP#W4 is a highly reliable and powerful 32-bit microcontroller, specifically designed for embedded systems applications and projects. Its advanced range of features, coupled with its compatibility with a comprehensive range of software development tools, makes it an ideal choice for both hobbyists and professional application developers. The R5F21321CNSP#W4 has the ability to be used in a wide variety of embedded systems, ranging from simple control applications to complex, real-time operations. It also features a 32-Bit ARM Cortex-M3 core, with a frequency of 72Mhz, as well as an abundance of integrated peripherals, making it suitable for a variety of embedded applications.

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