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参数资料
| 型号： | MA28155 |
| 厂商： | Dynex Semiconductor Ltd. |
| 英文描述： | Radiation Hard Programmable Peripheral Interface |
| 中文描述： | 辐射硬可编程外设接口 |
| 文件页数： | 1/20页 |
| 文件大小： | 214K |
| 代理商： | MA28155 |
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
I
Radiation Hard to 1MRad (Si)
I
High SEU Immunity, Latch Up Free
I
Silicon-on-Sapphire Technology
I
24 Programmable l/O Pins
I
All Inputs and Outputs are TTL Compatible
I
Direct Bit Set/Reset Capability Easing Control Application
Interface
I
Replaces Several MSI Packages
I
Compatible with MAS281 (Mil-Std-1750A) Microprocessor
Figure 1: Block Diagram
RD/WN
DSN
CSN
Radiation Hard Programmable
Peripheral Interface
Replaces June 1999 version, DS3575-4.0
DS3575-5.0 January 2000
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