Intel 80L188EA, 80L186EA, 80C188EA, 80C186EA specifications QFP Eiaj Pin Names with Package Location

Models: 80L186EA 80L188EA 80C186EA 80C188EA

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80C186EA/80C188EA, 80L186EA/80L188EA

Table 6. QFP (EIAJ) Pin Names with Package Location

Address/Data Bus

 

 

 

 

 

 

 

 

Bus Control

 

Processor Control

 

 

 

 

 

 

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Name

Location

 

 

 

Name

Location

 

Name

Location

 

 

 

Name

Location

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD0

64

 

ALE/QS0

10

 

RESIN

55

 

UCS

45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD1

66

 

BHE (RFSH)

7

 

RESOUT

18

LCS

46

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD2

68

 

S0

23

 

CLKIN

16

 

MCS0/PEREQ

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD3

70

 

S1

22

 

OSCOUT

17

 

MCS1/ERROR

41

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD4

74

 

S2

21

 

CLKOUT

19

 

MCS2

42

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD5

76

 

RD/QSMD

9

 

TEST/BUSY

29

 

MCS3/NCS

43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD6

78

 

WR/QS1

8

 

PDTMR

38

PCS0

54

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD7

80

 

ARDY

20

 

NMI

30

 

PCS1

52

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD8 (A8)

65

 

SRDY

27

 

INT0

31

 

PCS2

51

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD9 (A9)

67

 

DT/R

37

 

INT1/SELECT

32

 

PCS3

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD10 (A10)

69

 

DEN

39

 

INT2/INTA0

35

 

PCS4

49

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AD11 (A11)

71

 

LOCK

28

 

INT3/INTA1/

36

 

PCS5/A1

48

 

 

 

 

 

 

 

 

 

 

 

 

AD12 (A12)

75

 

HOLD

26

 

IRQ

 

 

PCS6/A2

47

AD13 (A13)

77

 

HLDA

25

 

N.C.

11, 14,

 

T0OUT

57

AD14 (A14)

79

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15, 63

 

T0IN

59

AD15 (A15)

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T1OUT

56

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A16

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T1IN

58

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

A17

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRQ0

61

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A18

5

 

 

 

Name

Location

 

 

 

 

 

 

 

 

 

DRQ1

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A19/S6

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VSS

12, 13, 24,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

53,62

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

2, 33, 34,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

44, 72, 73

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin names in parentheses apply to the 80C186EA/80L188EA.

 

 

 

 

 

 

 

 

 

 

 

 

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Intel 80L188EA, 80L186EA, 80C188EA, 80C186EA specifications QFP Eiaj Pin Names with Package Location

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.