Manuals / Intel / Computer Equipment / Computer Hardware

Intel 80C188EA, 80L186EA, 80L188EA, 80C186EA specifications Rwh

Models: 80L186EA 80L188EA 80C186EA 80C188EA

1 50
Download 50 pages 36.73 Kb
Page 10
Image 10

80C186EA/80C188EA, 80L186EA/80L188EA

 

Table 2. Pin Description Nomenclature

 

 

Symbol

Description

 

 

P

Power Pin (Apply aVCC Voltage)

G

Ground (Connect to VSS)

I

Input Only Pin

O

Output Only Pin

I/O

Input/Output Pin

 

 

S(E)

Synchronous, Edge Sensitive

S(L)

Synchronous, Level Sensitive

A(E)

Asynchronous, Edge Sensitive

A(L)

Asynchronous, Level Sensitive

 

 

H(1)

Output Driven to VCC during Bus Hold

H(0)

Output Driven to VSS during Bus Hold

H(Z)

Output Floats during Bus Hold

H(Q)

Output Remains Active during Bus Hold

H(X)

Output Retains Current State during Bus Hold

 

 

R(WH)

Output Weakly Held at VCC during Reset

R(1)

Output Driven to VCC during Reset

R(0)

Output Driven to VSS during Reset

R(Z)

Output Floats during Reset

R(Q)

Output Remains Active during Reset

R(X)

Output Retains Current State during Reset

 

 

I(1)

Output Driven to VCC during Idle Mode

I(0)

Output Driven to VSS during Idle Mode

I(Z)

Output Floats during Idle Mode

I(Q)

Output Remains Active during Idle Mode

I(X)

Output Retains Current State during Idle Mode

 

 

P(1)

Output Driven to VCC during Powerdown Mode

P(0)

Output Driven to VSS during Powerdown Mode

P(Z)

Output Floats during Powerdown Mode

P(Q)

Output Remains Active during Powerdown Mode

P(X)

Output Retains Current State during Powerdown Mode

 

 

10

10

Page 9 Page 11
Page 10
Image 10
Intel 80C188EA, 80L186EA, 80L188EA, 80C186EA specifications Rwh
Page 9 Page 11

80L186EA, 80L188EA, 80C186EA, 80C188EA specifications

The Intel 80C188EA, 80C186EA, 80L188EA, and 80L186EA microprocessors represent significant developments in the realm of embedded computing during the 1980s. These processors are part of Intel's x86 architecture, designed to cater to a variety of industrial applications, including automotive and telecommunications.

The 80C188EA and 80C186EA are CMOS variants that offer enhanced power efficiency and reduced heat generation compared to their NMOS predecessors. Operating at clock speeds of up to 25 MHz, these processors are known for their performance in real-time applications. The 80C188EA features a 16-bit data bus and a 16-bit address bus, which can support up to 1 MB of addressable memory. It also boasts an extended instruction set for greater computing flexibility, making it suitable for intricate tasks in embedded systems.

Similarly, the 80C186EA is characterized by its 16-bit architecture, but it includes additional on-chip memory management capabilities. This processor can handle 256 KB of memory directly and supports paged memory management, facilitating efficient multitasking and resource sharing in complex applications. Its integrated DMA controller and interrupt controller allow for superior handling of peripheral devices, making it ideal for real-time processing requirements.

On the other hand, the 80L188EA and 80L186EA are low-power variants optimized for battery-operated designs. These microprocessors are tailored for applications where power consumption is critical. The 80L188EA retains the essential features of the 80C188EA but operates at lower voltage levels, thus allowing for longer operational life in portable devices. The 80L186EA similarly benefits from reduced power consumption, taking advantage of its energy-efficient design to enhance durability in industrial automation scenarios.

All four processors leverage Intel's established x86 architecture, enabling a wide range of software compatibility. Their built-in support for real-time interrupt handling and I/O operations provides developers with valuable tools for building reliable embedded systems. Additionally, they feature on-chip oscillators and timers, further streamlining design requirements and reducing the need for external components.

Overall, the Intel 80C188EA, 80C186EA, 80L188EA, and 80L186EA processors are ideal for diverse applications in embedded systems. Their blend of processing power, energy efficiency, and versatility continues to influence the design of modern electronic devices, underscoring Intel's pivotal role in advancing microprocessor technology.