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Intel 8XC196NP, 80C196NU, Microcontroller manual Sbufrx, Data Received

Models: Microcontroller 80C196NU 8XC196NP

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REGISTERS

 

 

SBUF_RX

 

 

 

SBUF_RX

Address:

1FB8H

 

Reset State:

00H

The serial port receive buffer (SBUF_RX) register contains data received from the serial port. The serial port receiver is buffered and can begin receiving a second data byte before the first byte is read. Data is held in the receive shift register until the last data bit is received, then the data byte is loaded into SBUF_RX. If data in the shift register is loaded into SBUF_RX before the previous byte is read, the overflow error bit is set (SP_STATUS.2). The data in SBUF_RX will always be the last byte received, never a combination of the last two bytes.

7

0

 

Data Received

 

 

Bit

Function

Number

 

 

 

7:0

Data Received

This register contains the last byte of data received from the serial port.

C-39

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Intel 8XC196NP, 80C196NU, Microcontroller manual Sbufrx, Data Received
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Microcontroller, 80C196NU, 8XC196NP specifications

The Intel 8XC196NP and 80C196NU microcontrollers are part of Intel's renowned 16-bit microcontroller series that gained popularity in the 1980s and 1990s for embedded systems applications. Designed for a variety of applications, these microcontrollers are characterized by their robust performance, versatility, and industry-standard architecture.

The 8XC196NP features an enhanced instruction set with over 100 instructions, allowing for efficient code execution. It operates at clock speeds up to 16 MHz, which contributes to improved performance in time-sensitive applications. The microcontroller is equipped with a 16-bit data bus, enabling more efficient data handling compared to its 8-bit predecessors, thus accommodating complex algorithms and large data sets.

In terms of memory architecture, the 8XC196NP supports an addressable memory space of up to 64 KB of program memory and 64 KB of data memory. This configuration provides sufficient space for large applications while ensuring fast data access. The microcontroller includes integrated features such as timers, serial I/O capabilities, and interrupt processing, which enhance its functionality for real-time applications and control mechanisms.

The 80C196NU, on the other hand, is designed for lower power operation, making it suitable for battery-powered devices. This microcontroller maintains similar features to the 8XC196NP while offering advancements that support low-power consumption. The 80C196NU can also function in a range of temperature environments, making it adaptable for industrial applications.

Both the 8XC196NP and 80C196NU support external memory interfacing, allowing designers to expand the system's capability by connecting additional ROM and RAM. This flexibility makes them appealing for developing complex systems, such as motor controls, industrial automation, and consumer electronics.

Another standout feature of these microcontrollers is their built-in debugging capabilities. Intel provided hardware and software tools that enabled developers to test and troubleshoot their applications effectively, reducing the development time and increasing reliability.

Overall, the Intel 8XC196NP and 80C196NU microcontrollers stand out for their dependability, versatility, and performance, contributing significantly to the evolution of embedded system design. Their legacy continues to influence modern microcontroller technology, ensuring their relevance in a wide array of applications today.