hm5264165f-75 Elpida Memory, Inc., hm5264165f-75 Datasheet - Page 61

• Manufacturer Part Number: hm5264165f-75
• Description: 64m Lvttl Interface Sdram
• Manufacturer: Elpida Memory, Inc.

Auto Refresh Cycle
Self Refresh Cycle
DQMU/DQML
DQMU/DQML
DQ (output)
DQ (output)
DQ (input)
DQ (input)
Address
Address
DQM,
DQM,
CKE
RAS
CAS
CKE
RAS
CAS
CLK
CLK
WE
WE
CS
CS
BS
BS
Precharge command
If needed
V
Precharge
If needed
IH
A10=1
A10=1
0
1
t
RP
t
RP
2
Self refresh entry
command
HM5264165F/HM5264805F/HM5264405F-75/A60/B60
Auto Refresh
3
CKE Low
Data Sheet E0135H10
4
5
6
t
RC
7
Self refresh exit
ignore command
or No operation
8
l
SREX
Auto Refresh
High-Z
9
High-Z
t
RC
10
Next
clock
enable
11
t
RC
Self refresh entry
command
12
13
14
Active
Bank 0
15
R:a
t
RC
Next
clock
enable
16
Read
Bank 0
Auto
refresh
17
C:a
18
Refresh cycle and
Read cycle
RAS-CAS delay = 2
CAS latency = 2
Burst length = 4
Self refresh cycle
RAS-CAS delay = 3
CAS latency = 3
Burst length = 4
= V
= V
19
a
IH
IH
or V
or V
a+1
20
IL
IL
61