- 您現(xiàn)在的位置：買賣IC網 > PDF目錄366309 > a8255 (Altera Corporation) Programmable Peripheral Interface Adapter(可編程外圍接口適配器) PDF資料下載
參數(shù)資料
| 型號： | a8255 |
| 廠商： | Altera Corporation |
| 英文描述： | Programmable Peripheral Interface Adapter(可編程外圍接口適配器) |
| 中文描述： | 可編程外圍接口適配器（可編程外圍接口適配器） |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 250K |
| 代理商： | A8255 |
Altera Corporation
51
a8255 Programmable Peripheral Interface Adapter Data Sheet
Notes:
(1)
(2)
These bits are defined in
Table 9
.
Bits 4 and 5 effectively operate in mode 0. The I/O direction is dependent on bit 3
of the control register.
Notes:
(1)
(2)
These bits are defined in
Table 11
.
Depending on the lower three bits of the control register, bits 0 through 2 either
operate in mode 0 or function as status bits for port B in mode 1.
Operation
The
a8255
operates in the following three modes:
I
I
I
Mode 0: basic input/output
Mode 1: strobed input/output
Mode 2: strobed bidirectional bus
Table 6. Port C Status Bits with Ports A & B in Mode 1 Output
Note (1)
Bit
Signal
Description
0
1
2
3
4
5
6
7
intrb
Port B interrupt request
Port B output buffer full flag
Port B interrupt enable
Port A interrupt request
Note (2)
Note (2)
Port A interrupt enable
Port A output buffer full flag
nobfb
inteb
intra
I/O
I/O
intea
nobfa
Table 7. Port C Status Bits with Port A in Mode 2
Note (1)
Bit
Signal
Description
0
1
2
3
4
5
6
7
–
–
–
Note (2)
Note (2)
Note (2)
Port A interrupt request
Interrupt enable 2
Port A input buffer full flag
Interrupt enable 1
Port A output buffer full flag
intra
inte2
ibfa
inte1
nobfa
相關PDF資料 |
PDF描述 |
|---|---|
| A8255 | PROGRAMMABLE PERIPHERAL INTERFACE ADAPTER |
| a8259 | Programmable Interrupt Controller(可編程中斷控制器) |
| A8406-53 | Various types of cables for frame grabber |
| A8406-54 | Various types of cables for frame grabber |
| A8406-55 | Various types of cables for frame grabber |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| A82564000AP | 制造商:Panasonic Industrial Company 功能描述:LEVER |
| A82564210AP | 制造商:Panasonic Industrial Company 功能描述:LEVER |
| A82565540AP | 制造商:Panasonic Industrial Company 功能描述:LEVER |
| A8259 | 制造商:ALTERA 制造商全稱:Altera Corporation 功能描述:PROGRAMMABLE INTERRUPT CONTROLLER |
| A82596CA-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復。