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参数资料
| 型号： | MSM82C55A_2 |
| 厂商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Programmable Universal I/O Interface Device(可编程通用I/O接口器件) |
| 中文描述： | 可编程通用I / O接口设备（可编程通用的I / O接口器件） |
| 文件页数： | 11/26页 |
| 文件大小： | 168K |
| 代理商： | MSM82C55A_2 |
11/26
Semiconductor
MSM82C55A-2RS/GS/VJS
OPERATIONAL DESCRIPTION
Control Logic
Operations by addresses and control signals, e.g., read and write, etc. are as shown in the table
below:
CS
0
0
0
1
0
0
0
1
1
0
1
0
0
1
0
Setting of Control Word
The control register is composed of 7-bit latch circuit and 1-bit flag as shown below.
D
0
Definition of input/
output of low order
4 bits of port C.
Definition of input/
output of 8 bits of
port B.
Mode definition of
group B.
Definition of input/
output of high order
4 bits of port C.
Definition of input/
output of 8 bits of
port A.
0 = Output
1 = Input
0 = Output
1 = Input
0 = Mode 0
1 = Mode 1
0 = Output
1 = Input
0 = Output
1 = Input
Mode definition of group A.
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
6
0
0
1
D
5
0
1
￥
Mode
Mode 0
Mode 1
Mode 2
Control word Identification flag
Be sure to set 1 for the control word
to define a mode and input/output.
When set to 0, it becomes
the control word for bit set/
reset.
Group A Control Bits
Group B Control Bits
Input
Port A
Data Bus
Port B
Data Bus
Port C
Data Bus
Data Bus
Port A
Data Bus
Port B
Data Bus
Port C
Data Bus
Control Register
Illegal Condition
Data bus is in the high impedance status.
0
0
1
0
0
0
Control
1
1
￥
0
0
1
Others
A
0
0
1
0
1
1
￥
WR
0
0
0
0
1
￥
Operaiton
Operation
A
1
Output
1
1
1
1
0
￥
RD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSM82C55A-2G3-2K | 制造商:OKI Semiconductor 功能描述:MSM82C55A-2G3-2K CPU I/O EOL211209 |
| MSM82C55A-2GS | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:CMOS PROGRAMMABLE PERIPHERAL INTERFACE |
| MSM82C55A-2GS-2K | 制造商:ROHM Semiconductor 功能描述: 制造商:ROHM Semiconductor 功能描述:CMOS PROGRAMMABLE PERIPHERAL INTERFACE |
| MSM82C55A-2R3 | 制造商:OKI Semiconductor 功能描述:CPU I/O EOL211209 制造商:ROHM Semiconductor 功能描述: |
| MSM82C55A-2RS | 制造商:ROHM Semiconductor 功能描述: 制造商:OKI Semiconductor 功能描述:PERIPHERAL INTERFACE, 40 Pin, Plastic, DIP 制造商:ROHM Semiconductor 功能描述:CMOS PROGRAMMABLE PERIPHERAL INTERFACE |
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