Program Memory Type:	FLASH
Base Part Number:	DF70835
Supplier Device Package:	100-TQFP (14x14)
Package / Case:	100-TQFP
Operating Temperature:	-40°C ~ 85°C (TA)
Oscillator Type:	Internal
Data Converters:	A/D 8x10b
Voltage - Supply (Vcc/Vdd):	3 V ~ 5.5 V
RAM Size:	32K x 8
EEPROM Size:	--
Series:	SuperH® SH7080
Program Memory Size:	512KB (512K x 8)
Number of I/O:	65
Peripherals:	DMA, POR, PWM, WDT
Connectivity:	EBI/EMI, FIFO, I²C, SCI, SSU
Speed:	80MHz
Core Size:	32-Bit
Core Processor:	SH-2
Part Status:	Active
Packaging:	Tray

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DF70835AD80FTV Application Field and Working Principle

Introduction

DF70835AD80FTV is an ultra-low power microcontroller specially designed for system products and embedded applications. Released by STMicroelectronics in 2008, this 8-bit microcontroller was designed to provide very low power consumption and a runtime clock frequency of up to 32MHz. It consumes only 39.5mA/MHz in active mode and just 0.5uA in standby mode. It also comes with features like 14-bit analog-to-digital converter, real-time clock, 8 channel 8-bit timer, watchdog module, and flash memory support. The DF70835A is a powerful device capable of running a wide range of software applications.

Application Fields

The DF70835AD80FTV is suitable for use in a range of development projects, such as:

• Home Security devices and motion sensors
• Sensorless Motor Controllers
• Motion Interfacing
• Wireless Communication Interfacing
• Active RFID identification systems
• Internet of Things (IoT) projects
• Smart home automation systems
• Audio Processing

Working Principle

The DF70835AD80FTV microcontroller is based on the Harvard architecture and is an 8-bit device with a monolithic 16-bit CPU core featuring a 6-stage pipeline of Harvard-style instructions. The core runs at a maximum clock frequency of 32MHz in order to support fast computations.The memory architecture of the device consists of an 8kb ROM, 32kB Internal RAM, 256b of EEPROM, and a 512kbyte Flash Memory. This allows for extensive program code size and ample program storage. The high-speed flash memory increases code execution speed and saves code size.The DF70835AD80FTV also includes numerous peripherals to support a number of communication and sensor systems, such as 10 UARTs, 10 I2Cs, 8 SPI buses, 3 I2S buses and an analog-to-digital converter. A real-time clock and a watchdog module are also integrated.

Conclusion

The STMicroelectronics DF70835AD80FTV microcontroller is an ultra-low power device designed for embedded applications. It is a powerful 8-bit device that features a Harvard-style core and a wide range of peripherals. This makes it suitable for connecting to a variety of sensor, communication and audio systems. The combination of features makes the device an ideal choice for IoT, home automation systems and a range of other development projects.

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