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參數(shù)資料
| 型號： | MD82C55A-5/B |
| 廠商： | INTERSIL CORP |
| 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： | FRIT SEALED, CERDIP-40 |
| 文件頁數(shù)： | 25/26頁 |
| 文件大?。?/td> | 581K |
| 代理商： | MD82C55A-5/B |
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8
Operating Modes
Mode 1 - (Strobed Input/Output). This functional configura-
tion provides a means for transferring I/O data to or from a
specified port in conjunction with strobes or “hand shaking”
signals. In mode 1, port A and port B use the lines on port C
to generate or accept these “hand shaking” signals.
Mode 1 Basic Function Definitions:
Two Groups (Group A and Group B)
Each group contains one 8-bit port and one 4-bit
control/data port
The 8-bit data port can be either input or output. Both
inputs and outputs are latched.
The 4-bit port is used for control and status of the 8-bit
port.
Input Control Signal Definition
(Figures 6 and 7)
STB (Strobe Input)
A “l(fā)ow” on this input loads data into the input latch.
IBF (Input Buffer Full F/F)
A “high” on this output indicates that the data has been
loaded into the input latch: in essence, and acknowledg-
ment. IBF is set by STB input being low and is reset by the
rising edge of the RD input.
CONTROL WORD #12
CONTROL WORD #14
CONTROL WORD #13
CONTROL WORD #15
Mode 0 Configurations (Continued)
1
D7
0
D6
0
D5
1
D4
1
D3
0
D2
0
D1
0
D0
8
PA7 - PA0
4
PC7 - PC4
4
PC3 - PC0
8
PB7 - PB0
D7 - D0
82C55A
A
B
C
1
D7
0
D6
0
D5
1
D4
1
D3
0
D2
1
D1
0
D0
8
PA7 - PA0
4
PC7 - PC4
4
PC3 - PC0
8
PB7 - PB0
D7 - D0
82C55A
A
B
C
1
D7
0
D6
0
D5
1
D4
1
D3
0
D2
0
D1
1
D0
8
PA7 - PA0
4
PC7 - PC4
4
PC3 - PC0
8
PB7 - PB0
D7 - D0
82C55A
A
B
C
1
D7
0
D6
0
D5
1
D4
1
D3
0
D2
1
D1
1
D0
8
PA7 - PA0
4
PC7 - PC4
4
PC3 - PC0
8
PB7 - PB0
D7 - D0
82C55A
A
B
C
FIGURE 6. MODE 1 INPUT
1
D7
0
D6
1
D5
1
D4
1/0
D3 D2 D1 D0
CONTROL WORD
MODE 1 (PORT A)
PC4
8
IBFA
PC5
INTE
A
PA7-PA0
STBA
INTRA
PC3
PC6, PC7
I/O
2
RD
PC6, PC7
1 = INPUT
0 = OUTPUT
1
D7 D6 D5 D4 D3 D2 D1 D0
CONTROL WORD
MODE 1 (PORT B)
PC2
8
IBFB
PC1
INTE
B
PB7-PB0
STBB
INTRB
PC0
RD
11
82C55A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MR82C55A-5/B | 24 I/O, PIA-GENERAL PURPOSE, CQCC44 |
| MR82C55A/B | 24 I/O, PIA-GENERAL PURPOSE, CQCC44 |
| MD82C59A-5/B | 80C86; 80C88; 80C286; 8080; 8085; 8086; 8088; 80286; NSC800 COMPATIBLE, INTERRUPT CONTROLLER, CDIP28 |
| MR82C59A/B | 80C86; 80C88; 80C286; 8080; 8085; 8086; 8088; 80286; NSC800 COMPATIBLE, INTERRUPT CONTROLLER, CQCC28 |
| MD82C59A-12/B | 80C86; 80C88; 80C286; 8080; 8085; 8086; 8088; 80286; NSC800 COMPATIBLE, INTERRUPT CONTROLLER, CDIP28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MD82C55AB | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Programmable Peripheral Interface |
| MD82C55B | 制造商:HARRIS 制造商全稱:HARRIS 功能描述:CMOS Programmable Peripheral Interface |
| MD82C59A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Priority Interrupt Controller |
| MD82C59A WAF | 制造商:Harris Corporation 功能描述: |
| MD82C59A/7 | 制造商:Intersil Corporation 功能描述:PRIORITY INTERRUPT CONTROLLER, THIN EPI - Rail/Tube |
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