EN80C186EA13 데이터 시트보기 (PDF) - Intel

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EN80C186EA13

16-Bit High-Integration Embedded Processors

Intel 

Intel® 80C186XL and Intel® 80C186EA Differences

4.5

Table 3.

4.6

Package Information

This section describes the pins, pinouts, and thermal characteristics for the 80C186EA in the

Plastic Leaded Chip Carrier (PLCC) package. For complete package specifications and

information, see the Intel® Packaging Outlines and Dimensions Guide (Order Number: 231369).

With the extended temperature range operational characteristics are guaranteed over a temperature

range corresponding to -40 °C to +85 °C ambient. Package types are identified by a two-letter

prefix to the part number. The prefixes are listed in Table 3.

Prefix Identification

Prefix

Note

Package Type

Temperature Range

x

PLCC

Extended

NOTE:

1. The 25 MHz version is only available in commercial temperature range corresponding to 0 °C to +70 °C

ambient.

2. To address the fact that many of the package prefix variables have changed, all package prefix variables

in this document are now indicated with an "x".

Pin Descriptions

Each pin or logical set of pins is described in Table 5. There are three columns for each entry in the

Pin Description Table.

The Pin Name column contains a mnemonic that describes the pin function. Negation of the signal

name (for example, RESIN) denotes a signal that is active low.

The Pin Type column contains two kinds of information. The first symbol indicates whether a pin

is power (P), ground (G), input only (I), output only (O) or input/output (I/O). Some pins have

multiplexed functions (for example, A19/S6). Additional symbols indicate additional

characteristics for each pin. Table 5 lists all the possible symbols for this column.

The Input Type column indicates the type of input (asynchronous or synchronous).

Asynchronous pins require that setup and hold times be met only in order to guarantee recognition

at a particular clock edge. Synchronous pins require that setup and hold times be met to guarantee

proper operation. For example, missing the setup or hold time for the SRDY pin (a synchronous

input) will result in a system failure or lockup. Input pins may also be edge- or level-sensitive. The

possible characteristics for input pins are S(E), S(L), A(E) and A(L).

The Output States column indicates the output state as a function of the device operating mode.

Output states are dependent upon the current activity of the processor. There are four operational

states that are different from regular operation: bus hold, reset, Idle Mode and Powerdown Mode.

Appropriate characteristics for these states are also indicated in this column, with the legend for all

possible characteristics in Table 4.

The Pin Description column contains a text description of each pin.

As an example, consider AD15:0. I/O signifies the pins are bidirectional. S(L) signifies that the

input function is synchronous and level-sensitive. H(Z) signifies that, as outputs, the pins are high-

impedance upon acknowledgement of bus hold. R(Z) signifies that the pins float during reset. P(X)

signifies that the pins retain their states during Powerdown Mode.

Product Name Datasheet

17

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