A45L9332AE-6 AMIC Technology, Corp., A45L9332AE-6 Datasheet - Page 47

• Manufacturer Part Number: A45L9332AE-6
• Description: 256K x 32 Bit x 2 Banks Synchronous Graphic RAM
• Manufacturer: AMIC Technology, Corp.

CLOCK
ADDR
Self Refresh Entry & Exit Cycle
PRELIMINARY
RAS
CAS
CKE
DQM
DSF
CS
A10
DQ
WE
A9
0
* Note 7
* Note : TO ENTER SELF REFRESH MODE
Self Refresh Entry
t
1
SS
* Note 1
TO EXIT SELF REFRESH MODE
1.
2. After 1 clock cycle, all the inputs including the system clock can be don’t care except for CKE.
3. The device remains in self refresh mode as long as CKE stays “Low”.
4. System clock restart and be stable before returning CKE high.
5.
6. Minimum tRC is required after CKE going high to complete self refresh exit.
7. 2K cycle of burst auto refresh is required before self refresh entry and after self refresh exit.
2
If the system uses burst refresh.
CS , RAS & CAS with CKE should be low at the same clock cycle.
(cf.) Once the device enters self refresh mode, minimum tRAS is required before exit from self refresh.
CS starts from high.
(October, 2001, Version 0.1)
* Note 2
Hi-Z
3
4
5
6
* Note 3
7
8
9
46
Hi-Z
10
* Note 4
Self Refresh Exit
11
* Note 5
t
12
SS
13
t
RC min.
14
* Note 6
AMIC Technology, Inc.
A45L9332A Series
15
Auto Refresh
* Note 7
16
17
18
: Don't care
19