參數(shù)資料
型號(hào): ELANSC300-25VC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: Highly Integrated, Low-Power, 32-Bit Microcontroller
中文描述: 32-BIT, 25 MHz, MICROCONTROLLER, PQFP208
封裝: TQFP-208
文件頁(yè)數(shù): 106/139頁(yè)
文件大?。?/td> 1388K
代理商: ELANSC300-25VC
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106
élanSC300 Microcontroller Data Sheet
P R E L I M I N A R Y
Notes:
For more information about DRAM first cycle write wait states, see the DRAM First Cycle Wait State Select Logic table in Chapter
5 of the
élan
TM
SC300 Microcontroller Programmer’s Reference Manual
, order #18470.
Notes:
For more information about DRAM bank miss wait states, see the DRAM Bank Miss Wait State Select Logic table in Chapter 5
of the
élan
TM
SC300 Microcontroller Programmer’s Reference Manual
, order #18470.
Table 55.
DRAM First Cycle Write Access (See Figure 39)
Symbol
Parameter Description
Wait State
Min
Max
Unit
t5c
t27d
t30
t31
t32
t33
t34
t38
t39
t40
t41d
D15–D0 setup to CAS Low (write)
MWE setup to CAS Low (first cycle)
MA valid setup to RAS Low
MA hold from RAS Low
MA setup to CAS Low
RAS hold from CAS Low
RAS precharge from CAS High
MA hold from CAS active
RAS to CAS delay
RAS pulse width
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
1
2
3
N/A
1
2
3
N/A
5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
20
0
10
0
20
10
15
20
70
15
45
75
15
45
75
105
15
10,000
CAS pulse width (first cycle, write)
ns
ns
ns
ns
ns
ns
t43
t44d
MWE hold from CAS Low
CAS hold from RAS Low (first cycle, write)
t49
D15–D0 hold from CAS Low (write)
Table 56.
DRAM Bank/Page Miss Write Cycles (See Figure 39)
Symbol
Parameter Description
Wait State
Min
Max
Unit
t5c
t27c
D15–D0 setup to CAS Low (write)
N/A
3
4
5
N/A
N/A
N/A
3
4
5
N/A
N/A
3
4
5
3
4
5
N/A
5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MWE to CAS Low
65
65
80
60
20
10
38
38
53
30
70
30
60
75
60
90
105
15
t29b
t33
t34
t36
CAS precharge (page miss write)
RAS hold from CAS Low
RAS precharge from CAS High
RAS precharge
t39
t40
t41c
RAS to CAS delay
RAS pulse width
10,000
CAS pulse width (page miss write)
t44c
CAS hold from RAS Low (page miss write)
t49
D15–D0 hold from CAS Low (write)
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