as4c8m16s Alliance Memory, Inc, as4c8m16s Datasheet - Page 24

• Manufacturer Part Number: as4c8m16s
• Description: 128mb/ 8m X 16 Bit Synchronous Dram Sdram
• Manufacturer: Alliance Memory, Inc

Figure 22. Power on Sequence and Auto Refresh
CLK
CKE
CS#
RAS#
CAS#
WE#
BA0,1
A10
A0-A9,
A11
DQM
DQ
FEBRUARY 2011
Note(*):The Auto Refresh command can be issue before or after Mode Register Set command
Hi-Z
Inputs must be
Stable for 200 µs
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10
High Level
is reguired
Precharge All
Command
t
RP
Address Key
Mode Register
Set Command
t
MRD
1st Auto Refresh
Command
(*)
Minimum for 2 Refresh Cycles are required
T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
24
2nd Auto Refresh
Command
(*)
Don’t Care
Any
Command
AS4C8M16S