INTEL 186 EB/EC EVALUATION BOARD USER’S MANUAL

3.2MICROPROCESSOR

The core of the evaluation board is the 80x186 microprocessor. This processor operates at

3.3volts up to 16 MHz in this board. Alternatively, the board can be configured to run at 5 volts up to 33 MHz. To vary the CPU clock speed, an appropriate frequency value oscillator must be installed at location U3 on the EC board and at location U5 on the EB board. The oscillator operates at twice the frequency of the installed processor.

The 80x186 processor offers the following features:

•16-bit data bus

•1 Mbyte address space

•2 on-chip UARTs

•10 programmable chip-selects

•Interrupt control unit

•3 programmable timer/counters

•Power management unit

•32-bit watchdog timer (EC only)

•4 DMA channels (EC only)

The 8-bit bus version of the processor (80C188/80L188) may also be used in this board. To configure the board to operate with an 8-bit bus, jumper E5 must be in the A–B position. To configure the board to operate with a 16-bit bus, jumper E5 must be in the B–C position. Many of the processor’s on-chip peripherals can be accessed using the two expansion connectors on the board (JP1 and JP2).

NOTE

Because host communications use the on-chip serial ports, changing the operating frequency of the board requires the processor serial ports to be reconfigured. The RISM monitor source code is provided on a floppy diskette in your kit and is commented to indicate current register values.

3.2.1Packaging

The 80x186 EC is packaged in a 100 lead PQFP and socket and the 80x186 EB is packaged in an 84 lead PLCC package and socket. Adaptors are available from Applied Microsystems Corp.* and Emulation Technologies, Inc.* to allow for the connection of in-circuit emulators.

3-2

Page 25 Page 27
Page 26
Image 26
Intel 80L186EC, 80L188EC, 80L186EB, 80C186EB, 80C188EB, 80L188EB, 80C188EC, 80C186EC user manual Microprocessor, Packaging
Page 25 Page 27

80L188EB, 80C188EC, 80C188EB, 80L186EB, 80C186EB specifications

The Intel 80L188EC, 80C186EC, 80L186EC, 80C186EB, and 80L186EB microprocessors represent a significant evolution in Intel's 16-bit architecture, serving various applications in embedded systems and computing during the late 1980s and early 1990s. These microprocessors are designed to offer a blend of performance, efficiency, and versatility, making them suitable for a range of environments, including industrial control, telecommunications, and personal computing.

The Intel 80L188EC is a member of the 186 family, notable for its low-power consumption and integrated support for a range of peripheral devices. It operates at clock speeds of up to 10 MHz and features a 16-bit architecture, providing a balance of processing power and energy efficiency. The 80C186EC, on the other hand, is a more advanced version, offering enhanced performance metrics with faster clock speeds and improved processing capabilities, making it ideal for applications that require more computational power.

The 80L186EC shares similarities with the 80L188EC but is enhanced further for various low-power applications, especially where battery life is crucial. With a maximum clock speed of 16 MHz, it excels in scenarios demanding energy-efficient processing without sacrificing performance.

In contrast, the 80C186EB and 80L186EB are optimized versions that bring additional features to the table. The 80C186EB operates at higher clock speeds, coupled with an extended instruction set, enabling it to handle more complex tasks and run sophisticated software. These enhancements allow it to serve well in environments that require reliable performance under load, such as data acquisition systems or advanced control systems.

The 80L186EB is tailored for specific low-power scenarios, integrating Intel's sophisticated low-power technologies without compromising on speed. Utilizing advanced process technologies, these chips benefit from reduced heat output and extended operating life, a significant advantage in embedded applications.

Overall, these microprocessors showcase Intel's commitment to innovation in 16-bit processing, marked by their varying capabilities and power profiles tailored to meet the demands of diverse applications, from industrial systems to consumer electronics. Their legacy continues to influence subsequent generations of microprocessor designs, emphasizing performance, energy efficiency, and versatile applications in computing technology. As such, the Intel 80C186 and 80L188 families play a crucial role in understanding the evolution of microprocessor technology.
Top Page Image Contents