w9425g8dh Winbond Electronics Corp America, w9425g8dh Datasheet - Page 25

• Manufacturer Part Number: w9425g8dh
• Description: 8m ? 4 Banks ? 8 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

9.5
I
I
SYM.
I
I
I
I
I
I
DD4W
I
I
DD2N
DD2Q
DD3N
DD4R
I
I
I
DD2P
DD2F
DD3P
DD0
DD1
DD5
DD6
DD7
DC Characteristics
Operating current: One Bank Active-Precharge; t
= t
cycle; Address and control inputs changing once per clock cycle
Operating current: One Bank Active-Read-Precharge; Burst = 2;
t
control inputs changing once per clock cycle.
Precharge Power Down standby current: All Banks Idle; Power
down mode; CKE < V
DQS and DM
Idle floating standby current: CS > V
> V
clock cycle; Vin = V
Idle standby current: CS > V
min; t
once per clock cycle; Vin > V
and DM
Idle quiet standby current: CS > V
V
Vin > V
Active Power Down standby current: One Bank Active; Power
down mode; CKE < V
Active standby current: CS > V
Active-Precharge; t
DQS inputs changing twice per clock cycle; Address and other
control inputs changing once per clock cycle
Operating current: Burst = 2; Reads; Continuous burst; One Bank
Active; Address and control inputs changing once per clock cycle;
CL=3; t
Operating current: Burst = 2; Write; Continuous burst; One Bank
Active; Address and control inputs changing once per clock cycle;
CL = 3; t
clock cycle
Auto Refresh current: t
Self Refresh current: CKE < 0.2V
Random Read current: 4 Banks Active Read with activate every
20nS, Auto-Precharge Read every 20 nS; Burst = 4; t
= 0mA; DQ, DM and DQS inputs changing twice per clock cycle;
Address changing once per clock cycle
RC
IH
CK
IH
= t
min; t
min; DQ, DM and DQS inputs changing twice per clock
CK
min; Address and other control inputs changing once per
RC
REF
CK
= t
CK
min; CL = 3; t
CK
= t
CK
for DQ, DQS and DM
= t
= t
CK
min; Address and other control inputs changing
CK
CK
min; I
min; DQ, DM and DQS inputs changing twice per
min; Address and other control inputs stable;
RC
REF
OUT
IL
IL
= t
RC
CK
for DQ, DQS and DM
max; t
max; t
RAS
= 0mA
PARAMETER
= t
= t
CK
RFC
IH
max; t
CK
CK
IH
min; I
min or Vin < V
min
min; All Banks Idle; CKE > V
= t
= t
IH
CK
min; CKE > V
CK
CK
IH
OUT
= t
min; All Banks Idle; CKE >
min; Vin = V
IH
min
min; All Banks Idle; CKE
CK
= 0 mA; Address and
min; DQ, DM and
IL
- 25 -
max for DQ, DQS
RC
IH
REF
min; One Bank
= t
RCD
RC
for DQ,
min; t
= 3; I
IH
OUT
CK
Publication Release Date: Nov. 20
150
180
180
190
110
300
20
45
45
40
20
70
-5
3
MAX.
110
150
170
170
190
300
20
45
45
40
20
70
-6
3
110
150
160
160
190
300
-75
20
40
40
35
20
65
3
UNIT
mA
Revision A4
NOTES
7, 9
7, 9
,
7
7
7
7
7
7
7
2007