Datasheet

T
T
T
S
S
S
3
3
3
2
2
2
M
M
M
L
L
L
D
D
D
6
6
6
4
4
4
V
V
V
6
6
6
F
F
F
5
5
5
184PIN DDR266 Unbuffered DIMM
256MB With 32Mx8 CL2.5
Dimensions
Side
CK0, /CK0
CK1, /CK1
CK2, /CK2
Serial PD Clock
SDA
Millimeters Inches
Clock Input.
Serial PD Add/Data input/output
A 133.35 ± 0.20 5.250 ± 0.008
CKE0 Clock Enable Input.
VSS Ground
B 72.39
/CS0
NC
2.850
C 6.35
Chip Select Input.
No Connection
0.250000
D
/RAS Row Address Strobe
2.20 0.0870
/CAS
E 31.75 ± 0.20 1.250 ± 0.00800
Column Address Strobe
F 19.80 0.779
/WE Write Enable
G 4.00
DM0~DM7
0.157
H 12.00
Data-in Mask
0.472
I
VDD +2.5 Voltage power supply
1.27 ± 0.10 0.050 ± 0.004
VDDQ
(Refer Placement)
Pin Identification
Symbol
+2.5 Voltage Power Supply for DQS
Function
VREF Power Supply for Reference
A0~A12,BA0,BA1 Address input
VDDSPD
DQ0~DQ63
+2.5 Voltage Serial EEPROM
Power Supply
SA0~SA2
Data Input / Output.
Address in EEPROM
DQS0~DQS7 Data strobe input/output
SCL
Transcend Information Inc.
2