参数资料
型号: 18514
英文描述: ?lanSC300 and ?lanSC310 Microcontrollers ?lanSC300 Data Sheet
中文描述: ?lanSC300和?lanSC310微控制器?lanSC300数据表
文件页数: 9/139页
文件大小: 1388K
代理商: 18514
106
lanSC300 Microcontroller Data Sheet
PREL IMINARY
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 lanTMSC300 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 lanTMSC300 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
D15–D0 setup to CAS Low (write)
N/A
5
ns
t27d
MWE setup to CAS Low (first cycle)
N/A
20
ns
t30
MA valid setup to RAS Low
N/A
0
ns
t31
MA hold from RAS Low
N/A
10
ns
t32
MA setup to CAS Low
N/A
0
ns
t33
RAS hold from CAS Low
N/A
20
ns
t34
RAS precharge from CAS High
N/A
10
ns
t38
MA hold from CAS active
N/A
15
ns
t39
RAS to CAS delay
N/A
20
ns
t40
RAS pulse width
N/A
70
10,000
ns
t41d
CAS pulse width (first cycle, write)
115
ns
245
375
ns
t43
MWE hold from CAS Low
N/A
15
ns
t44d
CAS hold from RAS Low (first cycle, write)
145
ns
275
ns
3
105
ns
t49
D15–D0 hold from CAS Low (write)
N/A
15
ns
Table 56.
DRAM Bank/Page Miss Write Cycles (See Figure 39)
Symbol
Parameter Description
Wait State
Min
Max
Unit
t5c
D15–D0 setup to CAS Low (write)
N/A
5
ns
t27c
MWE to CAS Low
365
ns
465
ns
580
ns
t29b
CAS precharge (page miss write)
N/A
60
ns
t33
RAS hold from CAS Low
N/A
20
ns
t34
RAS precharge from CAS High
N/A
10
ns
t36
RAS precharge
338
ns
438
ns
553
ns
t39
RAS to CAS delay
N/A
30
ns
t40
RAS pulse width
N/A
70
10,000
ns
t41c
CAS pulse width (page miss write)
330
ns
460
ns
575
ns
t44c
CAS hold from RAS Low (page miss write)
360
ns
490
ns
5
105
ns
t49
D15–D0 hold from CAS Low (write)
N/A
15
ns
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1851400000 制造商:Weidmuller 功能描述:CONN TERM BLOCKS SKT 22 POS 5.08MM SCRW RA CBL MNT 15A - Bulk
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