m52d64322a Elite Semiconductor Memory Technology Inc., m52d64322a Datasheet - Page 9
![no-image](/images/no-image-200.jpg)
m52d64322a
Manufacturer Part Number
m52d64322a
Description
512k X 32 Bit X 4 Banks Mobile Synchronous Dram
Manufacturer
Elite Semiconductor Memory Technology Inc.
Datasheet
1.M52D64322A.pdf
(46 pages)
- Current page: 9 of 46
- Download datasheet (2Mb)
ESMT
EXTENDED MODE REGISTER SET (EMRS)
The extended mode register stores for selecting PASR;TCSR;DS. The extended mode register set must be done before any active
command after the power up sequence. The extended mode register is written by asserting low on CS,RAS,CAS,WE and high on
BA1,low on BA0(The SDRAM should be in all bank precharge with CKE already high prior to writing into the extended more
register). The state of address pins A0~An in the same cycle as CS,RAS,CAS,WE going low is written in the extended mode
register. Refer to the table for specific codes.
The extended mode register can be changed by using the same command and clock cycle requirements during operations as long
as all banks are in the idle state. The default value extended mode register is defined as half driving strength and all banks
refreshed.
BA1 BA0 A10
Elite Semiconductor Memory Technology Inc.
1
0
0
A9
0
A8
0
A7 A6
0
DS
A5
A4 A3
TCSR
A2
PASR
A1 A0
DS
Address bus
Extended Mode Register Set
PASR
A2-A0
A6-A5
000
001
010
100
101
011
111
00
01
10
11
Publication Date: Jan. 2009
Revision: 1.4
2 Bank (BankA& BankB) or
Self Refresh Coverage
1/2 Bank (BankA) or
1 Bank (BankA) or
A10=BA0=BA1=0
Driver Strength
Remark R : Reserved
(BA0=BA1=0)
M52D64322A
Full Strength
1/2 Strength
1/4 Strength
(BA1=0)
4Bank
R
R
R
R
9/46
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