ELANSC310 AMD [Advanced Micro Devices], ELANSC310 Datasheet - Page 96

• Manufacturer Part Number: ELANSC310
• Description: Single-Chip, 32-Bit, PC/AT Microcontroller
• Manufacturer: AMD [Advanced Micro Devices]

Notes:
For more information about DRAM first cycle write wait states, see the DRAM First Cycle Wait State Select Logic table in
Chapter 4 of the Élan
Notes:
For more information about DRAM bank miss wait states, see the DRAM Bank Miss Wait State Select Logic table in Chapter 4
of the Élan
96
Symbol
Symbol
t27d
t41d
t44d
t27c
t29b
t33
t34
t40
t41c
t44c
t5c
t30
t31
t32
t33
t34
t38
t39
t40
t43
t49
t5c
t36
t39
t49
TM
SC310 Microcontroller Programmer’s Reference Manual, order #20665.
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
RAS hold from CAS Low
RAS precharge from CAS High
RAS to CAS delay
RAS pulse width
D15–D0 setup to CAS Low (write)
MWE setup to CAS Low (first cycle)
CAS pulse width (first cycle, write)
MWE hold from CAS Low
CAS hold from RAS Low (first cycle, write)
D15–D0 hold from CAS Low (write)
D15–D0 valid to CAS Low (write)
MWE to CAS Low
CAS precharge
RAS precharge
CAS pulse width (page miss write)
CAS hold from RAS Low (page miss write)
D15–D0 hold from CAS Low (write)
TM
SC310 Microcontroller Programmer’s Reference Manual, order #20665.
Table 50. DRAM Bank/Page Miss Write Cycles (See Figure 39)
Parameter Description
Parameter Description
Table 49. DRAM First Cycle Write Access (See Figure 39)
Élan™SC310 Microcontroller Data Sheet
P R E L I M I N A R Y
Wait State
Wait State
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
1
2
3
1
2
3
3
4
5
3
4
5
3
4
5
3
4
5
Min
Min
105
105
20
10
20
10
15
20
70
15
45
75
15
45
75
15
65
65
80
60
20
10
38
38
53
20
70
30
60
75
60
90
15
5
0
0
5
10,000
10,000
Max
Max
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns