HYB18M1G16 Datasheet, PDF (20/65 Pages) Qimonda AG – 1-Gbit x16 DDR Mobile-RAM

Data Sheet
2.4.3
MODE REGISTER SET
The Mode Register and Extended Mode Register are loaded
via inputs A0 - A12 (see mode register descriptions in
Chapter 2.2). The MODE REGISTER SET command can
only be issued when all banks are idle and no bursts are in
progress. A subsequent executable command cannot be
issued until t_MRD is met.
HY[B/E]18M1G16[0/1]BF
1-Gbit DDR Mobile-RAM
FIGURE 8
Mode Register Set Command
CK
CK
CKE
CS
RAS
CAS
WE
A0-A12
BA0,BA1
(High)
Code
Code
= Don't Care
CK
CK
Command
MRS
Address
Code
NOP
t_MRD
FIGURE 9
Mode Register Definition
Valid
Valid
= Don't Care
Code = Mode Register / Extended Mode Register selection
(BA0, BA1) and op-code (A0 - A12)
Parameter
MODE REGISTER SET command period
TABLE 9
Timing Parameters for Mode Register Set Command
Symbol
-6
- 7.5
Unit Note
min. max. min. max.
t_MRD
2
–
2
–
t_CK –
Rev.1.0, 2007-03
20
10242006-Y557-TZXW