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參數(shù)資料
| 型號： | CDP1851 |
| 廠商： | Intersil Corporation |
| 英文描述： | CMOS Programmable I/O Interface(CMOS 可編程I/O接口) |
| 中文描述： | CMOS可編程I / O接口的CMOS（可編程的I / O接口） |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 56K |
| 代理商： | CDP1851 |
4-11
TABLE 4. (RA1 = 0, RA0 = 1)
INTERRUPT CONTROL
7
6
5
4
3
2
1
0
Interrupt Enable/Disable
INT
Enable
X
X
X
A/B
0
0
1
NOTES:
1. INT Enable = 1, INT Enabled
= 0, INT Disabled
2. A/B = 0, Port A
= 1, Port B
TABLE 5. (RA1 = 0, RA0 = 1)
7
6
5
4
3
2
1
0
Status Register
D7
D6
D5
D4
D3
D2
D1
D0
NOTES:
1. All Modes
(D0) B INT status (1 means set)
(D1) A INT status (1 means set)
2. Bidirectional Mode Only
(D2) 1 = A INT was caused by A STROBE
(D3) 1 = A INT was caused by B STROBE
3. Bit-Programmable Mode
(D4) A RDY input data
(D5) A STROBE input data
(D6) B RDY input data
(D7) B STROBE input data
TABLE 6. CPU CONTROLS
(NOTE 1)
CS
RA1
RA0
RD/WE
WR/RE
ACTION
0
X
X
X
X
No-op bus three-stated
X
0
0
X
X
No-op bus three-stated
X
X
X
0
0
No-op bus three-stated
X
X
X
1
1
No-op bus three-stated
X
X
X
1
1
No-op bus three-stated
1
0
1
1
0
Read status register (Note 1)
1
0
1
0
1
Load control register
1
1
0
1
0
Read port A (Note 1)
1
1
0
0
1
Load port A
1
1
1
1
0
Read port B (Note 1)
1
1
1
0
1
Load port B
NOTE:
1. Read = RD/WE = 1 and WR/RE = 0 is latched on trailing edge of CLOCK.
TABLE 7. MEMORY I/O USE
RD/WE INPUT
WR/RE INPUT
TPB INPUT
}
PIO Terminal
I/O Space
MRD
TPB
TPB
}
CPU Terminals
Memory Space
MWR
MRD
TPB
CDP1851, CDP1851C
相關PDF資料 |
PDF描述 |
|---|---|
| CDP1851CD | CMOS Programmable I/O Interface |
| CDP1851CDX | CMOS Programmable I/O Interface |
| CDP1851CE | CMOS Programmable I/O Interface |
| CDP1851CEX | CMOS Programmable I/O Interface |
| CDP1851DX | CMOS Programmable I/O Interface |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CDP1851 DIE | 制造商:Harris Corporation 功能描述: |
| CDP1851 WAF | 制造商:Harris Corporation 功能描述: |
| CDP1851C | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Programmable I/O Interface |
| CDP1851CD | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Programmable I/O Interface |
| CDP1851CDX | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Programmable I/O Interface |
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