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參數(shù)資料
| 型號： | MAQ28155CXXXX |
| 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, CDIP40 |
| 封裝： | CERAMIC, DIP-40 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 254K |
| 代理商： | MAQ28155CXXXX |
MA28155
3/20
Figure 2: Basic Mode Definitions and Bus Interface
Mode Definition Format (D7= 1)
Single Bit Set/Reset Feature
Any of the eight bits of Port C can be Set or Reset using a
single output instruction. This feature reduces software
requirements in control-based applications.
When Port C is being used as Status/Control for Port A or
B, these bits can be set or reset by using the Bit Set/Reset
operation just as if they were data output ports.
Interrupt Control Functions
When the MA28155 is programmed to operate in Mode 1
or 2, control signals are provided that can be used as interrupt
request inputs to the CPU (figure 4). The interrupt request
signals, generated from Port C, can be inhibited or enabled by
setting or resetting the associated INTE register bit, using the
Bit Set/Reset function of Port C.
This function allows the programmer to disallow or allow a
specific l/O device to interrupt the CPU, without affecting any
other device in the interrupt structure.
INTE register bit definitions:
(BIT-SET): INTE is SET -Interrupt enable
(BIT-RESET): INTE is RESET -Interrupt disable
Note: All mask register bits are automatically reset during
mode selection and device reset.
Bit Set/Reset Format (D7 = 0)
Figure 4: Bit Set/Reset Format (D7 = 0)
Figure 3: Mode Definition Format (D7 = 1)
RD/WN, DSN
A0 - A1, CSN
BIT No.
S
E
L
B0
B1
B2
A
C
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相關(guān)代理商/技術(shù)參數(shù) |
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| MAQ2901CB | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:RADIATION HARD 4-BIT MICROPROCESSOR SLICE |
| MAQ2901CC | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:RADIATION HARD 4-BIT MICROPROCESSOR SLICE |
| MAQ2901CD | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:RADIATION HARD 4-BIT MICROPROCESSOR SLICE |
| MAQ2901CE | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:RADIATION HARD 4-BIT MICROPROCESSOR SLICE |
| MAQ2901CL | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:RADIATION HARD 4-BIT MICROPROCESSOR SLICE |
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