M52S64322A-10BG ESMT [Elite Semiconductor Memory Technology Inc.], M52S64322A-10BG Datasheet - Page 31
![no-image](/images/no-image-200.jpg)
M52S64322A-10BG
Manufacturer Part Number
M52S64322A-10BG
Description
512K x 32 Bit x 4 Banks Mobile Synchronous DRAM
Manufacturer
ESMT [Elite Semiconductor Memory Technology Inc.]
Datasheet
1.M52S64322A-10BG.pdf
(47 pages)
- Current page: 31 of 47
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ESMT
Power Up Sequence
Power-Up and Initialization Sequence
The following sequence is required for POWER UP and Initialization.
1. Apply power and attempt to maintain CKE at a low state (all other inputs may be undefined.)
2. Start clock and maintain stable condition for a minimum.
3. The minimum of 200us after stable power and clock (CLK), apply NOP & take CKE high.
4. Issue precharge commands for all banks of the device.
5. Issue 2 or more auto-refresh commands.
6. Issue mode register set command to initialize the mode register.
7. Issue extended mode register set command to set PASR and DS.
Elite Semiconductor Memory Technology Inc.
C L O C K
A 1 0 / A P
-
-
A D D R
B A 1
B A 0
C K E
D Q M
C A S
W E
R A S
C S
D Q
Apply VDD before or at the same time as VDDQ
Apply VDDQ
( A l l B a n k s )
P r e c h a r g e
0
H i g h l e v e l i s n e c e s s a r y
H i g h l e v e l i s n e c e s s a r y
H i g h - Z
1
2
t
R P
A u t o R e f r e s h
3
4
5
6
t
R F C
7
8
A u t o R e f r e s h
9
10
11
12
t
R F C
13
14
M o d e R e g i s t e r S e t
Publication Date: Aug. 2009
Revision: 1.3
15
K e y
16
M52S64322A
E x t e n d e d M o d e
t
M R D
R e g i s t e r S e t
17
K e y
18
t
M R D
: D o n ' t c a r e
19
R o w A c t i v e
31/47
R A
B S
B S
R A
20
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