參數(shù)資料
型號(hào): DS89C450
英文描述: Ultra-High-Speed Flash Microcontrollers
中文描述: 超高速閃存微控制器
文件頁數(shù): 33/48頁
文件大?。?/td> 934K
代理商: DS89C450
DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers
33 of 48
Table 8. Page Mode 1, Data Memory Cycle Stretch Values
(PAGES1:PAGES0 = 00)
RD
/
WR
PULSE WIDTH (IN NUMBER OF OSCILLATOR CLOCKS)
MD2:MD0
STRETCH
CYCLES
4X/
CD0 = 100
2X
, CD1,
4X/
CD0 = 000
2X
, CD1,
4X/
CD0 = X10
2X
, CD1,
4X/
2X
, CD1,
CD0 = X11
000
0
0.25
0.5
1
1024
001
1
0.75
1.5
3
3072
010
2
1.75
3.5
7
7168
011
3
2.75
5.5
11
11,264
100
7
3.75
7.5
15
15,360
101
8
4.75
9.5
19
19,456
110
9
5.75
11.5
23
23,552
111
10
6.75
13.5
27
27,648
Table 9. Page Mode 1, Data Memory Cycle Stretch Values
(PAGES1:PAGES0 = 01)
RD
/
WR
PULSE WIDTH (IN NUMBER OF OSCILLATOR CLOCKS)
MD2:MD0
STRETCH
CYCLES
4X/
CD0 = 100
2X
, CD1,
4X/
CD0 = 000
2X
, CD1,
4X/
CD0 = X10
2X
, CD1,
4X/
CD0 = X11
2X
, CD1,
000
0
0.25
0.5
1
1024
001
1
0.75
1.5
3
3072
010
2
1.75
3.5
7
7168
011
3
2.75
5.5
11
11,264
100
7
3.75
7.5
15
15,360
101
8
4.75
9.5
19
19,456
110
9
5.75
11.5
23
23,552
111
10
6.75
13.5
27
27,648
Table 10. Page Mode 1, Data Memory Cycle Stretch Values (PAGES1:PAGES0 = 10)
RD/WR
PULSE WIDTH (IN NUMBER OF OSCILLATOR CLOCKS)
MD2:MD0
STRETCH
CYCLES
4X/
CD0 = 100
2X
, CD1,
4X/
CD0 = 000
2X
, CD1,
4X/
CD0 = X10
2X
, CD1,
4X/
CD0 = X11
2X
, CD1,
000
0
0.5
1
2
2048
001
1
1
2
4
4096
010
2
2
4
8
8192
011
3
3
6
12
12,288
100
7
4
8
16
16,384
101
8
5
10
20
20,480
110
9
6
12
24
24,576
111
10
7
14
28
28,672
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