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R80C188XL12 参数 Datasheet PDF下载

R80C188XL12图片预览
型号: R80C188XL12
PDF下载: 下载PDF文件 查看货源
内容描述: [MICROPROCESSOR|16-BIT|CMOS|LLCC|68PIN|CERAMIC ]
分类和应用:
文件页数/大小: 48 页 / 381 K
品牌: ETC [ ETC ]
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80C186XL/80C188XL  
proper operation. Stated simply, missing  
a setup or hold on an asynchronous pin  
will result in something minor (i.e., a tim-  
er count will be missed) whereas miss-  
ing a setup or hold on a synchronous pin  
result in system failure (the system will  
‘‘lock up’’).  
PACKAGE INFORMATION  
This section describes the pin functions, pinout and  
thermal characteristics for the 80C186XL in the  
Quad Flat Pack (QFP), Plastic Leaded Chip Carrier  
(PLCC), Leadless Chip Carrier (LCC) and the Shrink  
Quad Flat Pack (SQFP). For complete package  
specifications and information, see the Intel Packag-  
ing Outlines and Dimensions Guide (Order Number:  
231369).  
An input pin may also be edge or level  
sensitive.  
Column 4: Output States (for O and I/O types  
only)  
The state of an output or I/O pin is de-  
pendent on the operating mode of the  
device. There are four modes of opera-  
tion that are different from normal active  
mode: Bus Hold, Reset, Idle Mode, Pow-  
erdown Mode. This column describes  
the output pin state in each of these  
modes.  
Pin Descriptions  
Each pin or logical set of pins is described in Table  
3. There are four columns for each entry in the Pin  
Description Table. The following sections describe  
each column.  
Column 1: Pin Name  
In this column is a mnemonic that de-  
scribes the pin function. Negation of the  
signal name (i.e., RESIN) implies that  
the signal is active low.  
The legend for interpreting the information in the Pin  
Descriptions is shown in Table 2.  
Column 2: Pin Type  
As an example, please refer to the table entry for  
AD7:0. The ‘‘I/O’’ signifies that the pins are bidirec-  
tional (i.e., have both an input and output function).  
The ‘‘S’’ indicates that, as an input the signal must  
be synchronized to CLKOUT for proper operation.  
The ‘‘H(Z)’’ indicates that these pins will float while  
the processor is in the Hold Acknowledge state.  
R(Z) indicates that these pins will float while RESIN  
is low.  
A pin may be either power (P), ground  
(G), input only (I), output only (O) or in-  
put/output (I/O). Please note that some  
pins have more than one function.  
Column 3: Input Type (for I and I/O types only)  
These are two different types of input  
pins on the 80C186XL: asynchronous  
and synchronous. Asynchronous pins  
require that setup and hold times be met  
only to guarantee recognition. Synchro-  
nous input pins require that the setup  
and hold times be met to guarantee  
All pins float while the processor is in the ONCE  
Mode (with the exception of X2).  
8