DM870A-AQE

Ethernet:	10/100 Mbps
Additional Interfaces:	GPIO, MMC/SD/SDIO, PCMCIA, SPI, UART
Supplier Device Package:	320-LFBGA (13x13)
Package / Case:	320-LFBGA
Security Features:	--
Operating Temperature:	--
Voltage - I/O:	--
USB:	USB 2.0 OTG (1)
SATA:	--
Series:	--
Display & Interface Controllers:	LCD
Graphics Acceleration:	Yes
RAM Controllers:	SDRAM, SRAM
Co-Processors/DSP:	Multimedia: Audio Engine, Security; Real Time Secure
Speed:	240MHz
Number of Cores/Bus Width:	1 Core, 32-Bit
Core Processor:	ARM926EJ
Part Status:	Obsolete

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DM870A-AQE Application Field and Working Principle

The DM870A-AQE is a complete 8-bit microcomputer system with the speed of the 76.8 MHz 64-pin PIC processor that has been used in embedded and industrial automation applications for more than 10 years. It has a wide range of features including many I/O interfaces for easy connectivity and communication, an integrated real-time clock and a built-in battery backup power supply. It also offers a robust operating temperature range of -40°C to 105°C.The DM870A-AQE is a CPU based on the venerable 8-bit PIC architecture. It has 32K of internal Flash memory, 4K of RAM, a built-in Real Time Clock (RTC) and an array of integrated peripheral interfaces. It supports multiple high-level programming languages. This versatility allows it to be used as an embedded controller for a wide variety of applications in industry, consumer, and automotive markets.The DM870A-AQE is an ideal choice for embedded systems. Its powerful enough to handle demanding applications, yet simple enough that systems engineers can quickly get prototypes up and running. The processor\'s low power consumption helps reduce energy costs, making it an attractive choice for applications that require long battery life.Now let’s focus on the working principle of the DM870A-AQE. Like other processors in its class, the DM870A-AQE utilizes a Harvard architecture that divides the processor into two separate parts: the instruction set and the data set. By using separate buses for instructions and data, the processor can work on instructions and data simultaneously, allowing for more efficient operation.A Harvard architecture processor is actually made up of two individual 8-bit PIC processors, a Master processor and a Slave processor. The Master processor is responsible for the execution of instructions. The Slave processor takes care of the data set and performs operations such as memory and I/O operations. Both processors work together to complete operations.So how does the DM870A-AQE work? Every operation on the processor can be broken down into a series of microinstructions. The microinstructions are decoded by the Master processor, and then executed by the Slave processor. This allows the processor to quickly and simultaneously execute multiple, complex operations.The DM870A-AQE has a wide range of on-board peripherals including UARTs, Timers, Interrupt Controllers, and a Digital-to-Analog Converter (DAC). With these, the processor can access and control external hardware such as displays, printers, sensors, and motors.The DM870A-AQE also has an array of features that make it ideal for embedded applications. These features include an on-chip Watchdog Timer (WDT) to prevent processor crashes, and an on-chip Power Supply Controller (PSC) to ensure that the processor only consumes the power it needs in certain scenarios. This helps extend battery life and reduce energy costs.The DM870A-AQE is an ideal choice for a variety of embedded and industrial automation applications. It has a wide array of features that make it easy to integrate into a control system. Its low power consumption and robust temperature range make it ideal for standalone and battery-powered applications. With the right programming and design, engineers can quickly develop and deploy sophisticated control systems with the DM870A-AQE.

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