DS87C520-QNL

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The DS87C520-QNL microcontroller, manufactured by Dallas Semiconductor and Maxim Integrated, is an 8-bit microcontroller designed for embedded applications. It is designed to provide high performance and low power, making it suitable for a variety of applications. In this article we will discuss the application field, working principle and features of the DS87C520-QNL.

Application Field

The DS87C520-QNL is well suited for applications requiring data processing and control, such as automotive and home automation systems, medical equipment, consumer electronics, and industrial and commercial products. In particular, the DS87C520-QNL is suitable for applications that require the device to interact with external devices over a variety of interface standards. These include serial and parallel ports, CAN, RS-232 and Ethernet. The device is also well suited for use in motor and motor control systems, digital audio and imaging devices, LED control systems, audio/video decoding and encoding systems, as well as data acquisition and instrument control systems.

Working Principle

The DS87C520-QNL has a Harvard architecture, which allows the microcontroller to access data and instructions in parallel. It uses an 8-bit data bus and can access up to 64KB of data. The processor operates at a maximum speed of 40MHz and can run single-cycle instructions. It features an internal hardware multiplier/divider to support operations on large numbers. Additionally, it features an external bus interface to perform memory and peripheral addressing.

The DS87C520-QNL features 8-bit address buses and 20-bit data buses for accessing memory. The device also has a programmable peripheral interface which can be used to expand the device’s functionality. The device’s internal clock generator provides a maximum clock frequency of 40MHz, which allows applications to benefit from the device’s high-speed operations.

Features

The DS87C520-QNL has an on-chip RAM of 8 KB and ROM of 64 KB. The device also has 64 bytes of SRAM and 512 bytes of EEPROM. The device also has an on-chip debug unit that can be used for debugging the code. Additionally, the processor can be used in combination with external memory for large memory applications.

The device is available in two package variants – a 44-pin plastic quad flatpack (PQF) and a 44-pin plastic leaded chip carrier (PLCC). The I/O pins are multiplexed and can be set to either output or input mode. The device also has an on-chip digital real-time clock and an on-chip watchdog timer.

The DS87C520-QNL also has an on-chip digital to analog converter (DAC) which can be used to generate analog outputs. The device also has a timer module which can be used to generate accurate time delays or pulse width modulation (PWM) signals. The device also has an on-chip comparator module which can be used to compare two digital values.

The device is suitable for use in applications that require low power consumption. The processor features low-power modes such as idle and sleep states that help in reducing power consumption. The device is also resistant to temperature and industrial grade changes, making it suitable for use in rugged conditions.

The DS87C520-QNL is an ideal solution for embedded applications. It has a wide range of features that make it suitable for a variety of applications. Its small size and low power consumption make it well suited for applications that require low power consumption. Additionally, its ability to interface with external devices over a variety of interface standards makes it a suitable solution for a variety of applications.

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