W9751G6JB-25 Winbond Electronics, W9751G6JB-25 Datasheet - Page 17

• Manufacturer Part Number: W9751G6JB-25
• Description: IC DDR2-800 SDRAM 512MB 84WBGA
• Manufacturer: Winbond Electronics

Specifications of W9751G6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 512M (32Mx16)
• 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: Q5606783

For proper operation of adjust mode, WL = RL - 1 = AL + CL - 1 clocks and t
shown in Figure 7. For input data pattern for adjustment, D
by burst type (i.e., sequential or interleave).
7.2.3.3
Drive mode, both Drive (1) and Drive (0), is used for controllers to measure DDR2 SDRAM Driver
impedance. In this mode, all outputs are driven out t
output drivers are turned-off t
CLK
CLK
CMD
DQ
DQS
DQS
DM
CLK
CLK
CMD
DQS_in
DQ_in
EMRS
Drive Mode
t
OIT
Enter Drive mode
EMRS
EMRS(1)
OCD adjust mode
DQS high & DQS low for Drive (1), DQS low & DQS high for Drive (0)
WL
NOP
NOP
NOP
OIT
tDS tDH
NOP
DT0
NOP
after “OCD calibration mode exit” command as shown in Figure 8.
NOP
DQs high for Drive (1)
DQs low for Drive (0)
DT1
Figure 7 – OCD Adjust Mode
Figure 8 – OCD Drive Mode
DQS
NOP
DT2
NOP
NOP
DT3
- 17 -
NOP
NOP
NOP
OIT
after “enter drive mode” command and all
T0
EMRS
OCD calibration mode exit
- D
OCD calibration mode exit
t
OIT
NOP
NOP
T3
Publication Release Date: Aug. 03, 2010
WR
is a fixed order and is not affected
HI-Z
NOP
NOP
NOP
DS
W9751G6JB
/t
DH
NOP
EMRS
should be met as
Revision A04
NOP
NOP