Datasheet

J
J
J
M
M
M
3
3
3
3
3
3
4
4
4
D
D
D
6
6
6
4
4
4
3
3
3
A
A
A
-
-
-
6
6
6
0
0
0
256MB 184 PIN DDR333 DDR
SDRAM DIMM With 32Mx8 2.5VOLT
Dimensions
Side Millimeters Inches
A 133.35±0.20 5.250±0.008
B 72.39 2.850
C 6.35 0.250000
D 2.20 0.0870
E 31.75±0.20 1.250±0.00800
F 19.80 0.779
G 4.00 0.157
H 12.00 0.472
I 1.27±0.10 0.050±0.004
(Refer Placement)
Pin Identification
Symbol Function
A0~A12, BA0, BA1 Address input
DQ0~DQ63 Data Input / Output.
DQS0~DQS7 Data strobe input/output
CK0, /CK0, CK1, /CK1
CK2, /CK2
Clock Input.
CKE0 Clock Enable Input.
/CS0 Chip Select Input.
/RAS Row Address Strobe
/CAS Column Address Strobe
/WE Write Enable
DM0~DM7 Data-in Mask
VDD +2.5 Voltage power supply
VDDQ +2.5 Voltage Power Supply for DQS
VREF Power Supply for Reference
VDDSPD
+2.5 Voltage Serial EEPROM
Power Supply
SA0~SA2 Address in EEPROM
SCL Serial PD Clock
SDA Serial PD Add/Data input/output
VSS Ground
NC No Connection
(Refer Block Diagram And Pinouts)
Transcend Information Inc.
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