W3H64M72E-XSBX
White Electronic Designs
ADVANCED*
FIGURE 4 – POWER-UP AND INITIALIZATION
Notes appear on page 9
VCC
V
CC
Q
1
tVꢀD1
V
ꢀꢀ
V
REF
ꢀk0
ꢀl0
ꢀm0
ꢀg0
ꢀh0
ꢀi0
ꢀj0
ꢀe0
ꢀf0
ꢀc0
ꢀd0
ꢀb0
ꢀ0
ꢀa0
t
CK
CK#
CK
t
t
CT
CT
See
note
3
SSꢀTL18
TVCMOS
TOW TEVET8
8
CKE TOW TEVET
ODꢀ
COMMAND
REF
TM
TM
VATID3
2
TM
TM
TM
PRE
PRE
TM
TM
REF
NOP
DM7
9
ADDRESS
CODE
CODE
CODE
A10 = 1
CODE
CODE
CODE
CODE
A10 = 1
VATID
High-Z
High-Z
7
DQS
DQ7
High-Z
Rꢀꢀ
t
t
t
t
t
t
t
t
t
MRD
ꢀ = 200µs (MIN)
Power-up:
CC and stable
clock (CK, CK#)
t
MRD
t
ꢀ = 400ns
(MIN)
RPA
MRD
MRD
MRD
MRD
EMR with
DTT ENABTE5
RPA
RFC
RFC
MRD
Seenote4
V
EMR(2)
EMR(3)
MR w/o
EMR with
DTT RESEꢀ OCD Default
EMR with
10
11
OCD Exit
Normal
Operation
3
200 cycles of CK
MR with
DTT RESEꢀ
Indicates a break in
time scale
DON’ꢀ CARE
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
March 2006
Rev. 1
7
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
