is42g32256 ETC-unknow, is42g32256 Datasheet - Page 50

• Manufacturer Part Number: is42g32256
• Description: 256k 16-mbit Synchronous Graphics
• Manufacturer: ETC-unknow

IS42G32256
50
A0-A8
DQM
CKE
RAS
CAS
DSF
CLK
A10
WE
DQ
CS
A9
6. Minimum t
Notes:
TO ENTER SELF REFRESH MODE
1.
2. After one clock cycle, all the inputs including the system clock can be “Don’t Care” except for CKE.
3. The device remains in the self refresh mode as long as CKE stays “Low”. Once the device enters self refresh mode
TO EXIT SELF REFRESH MODE
4. System clock restart and be stable before returning CKE high.
5.
7. 2K cycle of burst auto refresh is required before self refresh entry and after self refresh exit if system uses burst
CS
minimum t
CS
refresh.
NOTE 7
0
,
starts from high.
RAS
1
REFRESH
, and
NOTE 1
ENTRY
RAS
RC
SELF
NOTE 2
2
is required after CKE going high to complete self refresh exit.
t
SS
CAS
is required before exit from self refresh.
3
with CKE should be low at the same clock cycle.
HI-Z
4
Figure 35. Self Refresh Entry and Exit Cycle
5
NOTE 3
6
7
8
9
10
NOTE 4
HI-Z
11
NOTE 5
REFRESH
SELF
EXIT
12
t
SS
13
14
t
RCmin
Integrated Silicon Solution, Inc.
15
NOTE 6
NOTE 7
REFRESH
AUTO
ADVANCE INFORMATION SR037-0C
16
17
18
: DON’T CARE
19
ISSI
09/10/98
®