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參數(shù)資料
| 型號： | MAH28155LXXXX |
| 廠商： | DYNEX SEMICONDUCTOR LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 24 I/O, PIA-GENERAL PURPOSE, CQCC44 |
| 封裝： | LCC-44 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 254K |
| 代理商： | MAH28155LXXXX |
MA28155
1/20
The MA28155 is a general purpose programmable Input/
Output device designed for use with the MAS281
microprocessor. It has 24 I/O pins which may be individually
programmed in 2 groups of 12 and used in 3 major modes of
operation.
In the first mode (MODE 0), each group of 12 I/O pins may
be programmed in sets of 4 to be inputs or outputs. In the
second mode (MODE 1), each group may be programmed to
have 8 lines of input or output. Of the remaining 4 pins, 3 are
used for hand-shaking and interrupt control signals. The third
mode of operation (MODE 2) is the bidirectional bus mode,
which uses 8 lines for a bidirectional bus and 5 lines, borrowing
one from the other group, for hand-shaking.
FEATURES
s Radiation Hard to 1MRad (Si)
s High SEU Immunity, Latch Up Free
s Silicon-on-Sapphire Technology
s 24 Programmable l/O Pins
s All Inputs and Outputs are TTL Compatible
s Direct Bit Set/Reset Capability Easing Control Application
Interface
s Replaces Several MSI Packages
s Compatible with MAS281 (Mil-Std-1750A) Microprocessor
Figure 1: Block Diagram
RD/WN
DSN
CSN
MA28155
Radiation Hard Programmable
Peripheral Interface
Replaces January 2000 version, DS3575-5.0
DS3575-5.1 July 2002
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