W971GG6JB-25 Winbond Electronics, W971GG6JB-25 Datasheet - Page 36

• Manufacturer Part Number: W971GG6JB-25
• Description: IC DDR2-800 SDRAM 1GB 84-WBGA
• Manufacturer: Winbond Electronics

Specifications of W971GG6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 1G (64M x 16)
• Speed: 2.5ns
• Interface: Parallel
• Voltage - Supply: 1.7 V ~ 1.9 V
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 84-WBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5804012

8.5
Simplified Stated Diagram
CKEL
MR,EMR (1)
calibration
EMR (2)
EMR (3)
Setting
Power
Active
Down
OCD
Write
WRITA
Auto-precharge
CKEL
(E)MRS
Writing
Writing
CKEL
with
Write
CKEH
PRE
PRE, PREA
WRITA
WRITA
Write
Precharging
Initialization
Precharged
PRE, PREA
Sequence
All banks
Activating
Active
Bank
ACT
Idle
Read
READA
PRE, PREA
READA
SELF
CKEH
- 36 -
CKEL
CKEH
Read
Self Refreshing
Auto-precharge
Precharge
Reading
Reading
Power
Down
with
REF
READA
CKEL
Read
CKEL
Publication Release Date: Mar. 28, 2011
CKEL
CKEL = CKE LOW, enter Power Down
CKEH = CKE HIGH, exit Power Down
CKEH = CKE HIGH, exit Self Refresh
ACT = Activate
WRITA = Write with Auto-precharge
READA = Read (with Auto-precharge
PREA = Precharge All
(E)MRS = (Extended) Mode Register Set
SELF = Enter Self Refresh
REF = Refresh
Refreshing
Command Sequence
Autoomatic Sequence
W971GG6JB
Revision A07