80C186EA PINOUT

Tables 4 and 5 list the 80C186EA pin names with package location for the 68-pin Plastic Leaded Chip Carrier (PLCC) component. Figure 9 depicts the complete 80C186EA/80L186EA pinout (PLCC pack- age) as viewed from the top side of the component (i.e., contacts facing down).

Tables 6 and 7 list the 80C186EA pin names with package location for the 80-pin Quad Flat Pack (EIAJ) component. Figure 6 depicts the complete

80C186EA/80C188EA, 80L186EA/80L188EA

80C186EA/80C188EA (EIAJ QFP package) as viewed from the top side of the component (i.e., con- tacts facing down).

Tables 8 and 9 list the 80C186EA/80C188EA pin names with package location for the 80-pin Shrink Quad Flat Pack (SQFP) component. Figure 7 depicts the complete 80C186EA/80C188EA (SQFP) as viewed from the top side of the component (i.e., con- tacts facing down).

Table 4. PLCC Pin Names with Package Location

Address/Data Bus

Name

Location

 

 

AD0

17

AD1

15

AD2

13

AD3

11

AD4

8

AD5

6

AD6

4

AD7

2

AD8 (A8)

16

AD9 (A9)

14

AD10 (A10)

12

AD11 (A11)

10

AD12 (A12)

7

AD13 (A13)

5

AD14 (A14)

3

AD15 (A15)

1

A16

68

A17

67

A18

66

A19/S6

65

 

 

Bus Control

 

 

 

Name

Location

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALE/QS0

61

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BHE (RFSH)

64

 

 

 

 

 

 

 

 

 

 

52

 

S0

 

 

 

 

 

 

 

 

 

 

 

 

S1

53

 

 

 

 

 

 

 

 

 

 

 

 

S2

54

 

 

 

 

 

 

 

 

 

 

 

RD/QSMD

62

 

 

 

 

 

 

 

 

WR/QS1

63

 

ARDY

55

 

SRDY

49

 

 

 

 

 

 

 

DEN

39

 

 

 

 

 

 

LOCK

48

 

HOLD

50

 

HLDA

51

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

Name

 

Location

 

 

 

 

 

VSS

 

26, 60

 

VCC

 

9, 43

Processor Control

 

Name

Location

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESIN

24

 

RESOUT

57

 

CLKIN

59

 

OSCOUT

58

 

CLKOUT

56

 

 

 

 

 

 

 

TEST/BUSY

47

 

PDTMR

40

 

NMI

46

 

INT0

45

 

INT1/SELECT

44

 

 

 

 

 

 

INT2/INTA0

42

 

 

 

 

 

 

INT3/INTA1/

41

 

IRQ

 

 

 

 

 

 

 

 

I/O

 

 

 

Name

Location

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UCS

34

 

 

 

 

 

 

 

 

 

 

 

LCS

33

 

 

 

 

 

 

 

 

 

 

MCS0/PEREQ

38

 

 

 

 

 

 

 

 

 

 

MCS1/ERROR

37

 

 

 

 

 

 

 

 

 

MCS2

36

 

 

 

 

 

 

 

 

 

MCS3/NCS

35

 

 

 

 

 

 

PCS0

25

 

 

 

 

 

 

PCS1

27

 

 

 

 

 

 

PCS2

28

 

 

 

 

 

 

PCS3

29

 

 

 

 

 

 

PCS4

30

 

 

 

 

 

 

PCS5/A1

31

 

 

 

 

 

PCS6/A2

32

 

T0OUT

22

 

T0IN

20

 

T1OUT

23

 

T1IN

21

 

DRQ0

18

 

DRQ1

19

 

 

 

 

 

 

 

 

 

 

 

NOTE:

Pin names in parentheses apply to the 80C188EA/80L188EA.

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Intel 80L186EA, 80L188EA, 80C188EA specifications 80C186EA Pinout, AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7

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.