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參數(shù)資料
| 型號： | CDP1851CE |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | CMOS Programmable I/O Interface |
| 中文描述： | 20 I/O, PIA-GENERAL PURPOSE, PDIP40 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 56K |
| 代理商： | CDP1851CE |
4-10
TABLE 1. (RA1 = 0, RA0 = 1)
(NOTE 1)
MODE SET
7
6
5
4
3
2
1
0
Input
0
0
X
Set B
Set A
X
1
1
Output
0
1
X
Set B
Set A
X
1
1
Bit-Programmable
1
1
X
Set B
Set A
X
1
1
Bidirectional
1
0
X
X
Set A
X
1
1
NOTE:
1. Modes should be set in order as shown in Table 1.
If either port is set for bit-programmable mode, the two following control bytes should immediately follow:
TABLE 2. (RA1 = 0, RA0 = 1)
7
6
5
4
3
2
1
0
Bit-Programming (Note 1)
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
I/O1
I/O0
STROBE/RDY I/O Control (Notes 2 - 8)
D7
D6
D5
D4
D3
D2
D1
D0
NOTES:
1. Output = 1, Input = 0
2. (D1) 0 = Port A, 1 = Port B
3. (D2) 0 = No change to RDY line function, 1 = Change per bit (D6)
4. (D3) 0 = No change to STROBE line function, 1 = Change per bit (D7)
5. (D4) RDY line output data
6. (D5) STROBE line output data
7. (D6) RDY line used as:
Output = 1
Input = 0
8. (D7) STROBE line used as:
Output = 1
Input = 0
If interrupts will be used for either bit-programmed port, the following control bytes should be loaded.
TABLE 3. (RA1 = 0, RA0 = 1)
INTERRUPT CONTROL
7
6
5
4
3
2
1
0
Logical Conditions and Mask
0
D6
D5
D4
D3
1
0
1
NOTES:
1. (D3) 0 = Port A, 1 = Port B
2. (D4) 0 = No change in mask, 1 = Mask follows (See Table 3A)
3. (D5)(D6) 0, 0 = NAND; 1, 0 = OR; 0, 1 = NOR; 1, 1 = AND
TABLE 3A. (RA1 = 0, RA0 = 1)
INTERRUPT CONTROL
7
6
5
4
3
2
1
0
Mask Register (If D4 = 1)
B7 Mask
B6 Mask
B5 Mask
B4 Mask
B3 Mask
B2 Mask
B1 Mask
B0 Mask
NOTE:
1. If Bn Mask = 1 then mask Bit (for n = 0 to 7)
CDP1851, CDP1851C
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PDF描述 |
|---|---|
| CDP1851CEX | CMOS Programmable I/O Interface |
| CDP1851DX | CMOS Programmable I/O Interface |
| CDP1851E | CMOS Programmable I/O Interface |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDP1851CEX | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Programmable I/O Interface |
| CDP1851D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| CDP1851DX | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Programmable I/O Interface |
| CDP1851E | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CDP1852 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Byte-Wide Input/Output Port |
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