is43dr16640a-3dbi Integrated Silicon Solution, Inc., is43dr16640a-3dbi Datasheet - Page 3

• Manufacturer Part Number: is43dr16640a-3dbi
• Description: 1gb X8, X16 Ddr2 Sdram
• Manufacturer: Integrated Silicon Solution, Inc.

IS43DR81280A, IS43/46DR16640A
DDR2 SDRAM (64Mx16) BGA Ball‐out (Top‐View)
Integrated Silicon Solution, Inc. – www.issi.com –
Rev. 00A, 12/11/2009
RAS#,CAS#,WE#
UDQS, UDQS#
LDQS, LDQS#
UDM, LDM
CK, CK#
Symbol
VDDQ
VSSDL
VSSQ
VDDL
VREF
VDD
DQx
ODT
CKE
BAx
VSS
CS#
NC
Ax
Description
Input clocks
Clock enable
Chip Select
Command control inputs
Address
Bank Address
I/O
Upper Byte Data Strobe
Lower Byte Data Strobe
Input data mask
Supply voltage
Ground
DQ power supply
DQ ground
Reference voltage
DLL power supply
DLL ground
On Die Termination Enable
No connect
M
C
D
G
H
N
R
A
B
E
F
K
P
L
J
VDDQ
VDDQ
1
DQ14
DQ12
VDDL
VDD
VDD
DQ6
DQ4
VDD
BA2
VSS
A10/AP
2 3 4
VSSQ
VSSQ
VSSQ
VSSQ
VREF
DQ9
DQ1
CKE
BA0
A12
NC
NC
A3
A7
VDDQ
VDDQ
DQ11
UDM
LDM
DQ3
VSS
VSS
VSS
WE
BA1
A1
A5
A9
NC
5 6 7
Note:
VDDL and VSSDL are power and ground for the DLL. It is
recommended that they are isolated on the device from
VDD, VDDQ, VSS, and VSSQ.
VSSDL
UDQS
VDDQ
VDDQ
VSSQ
DQ10
VSSQ
LDQS
RAS
CAS
DQ2
A11
NC
A2
A6
Not populated
UDQS
LDQS
8 9
VSSQ
VSSQ
VSSQ
VSSQ
DQ8
DQ0
CK
CS
NC
CK
A0
A4
A8
VDDQ
VDDQ
VDDQ
VDDQ
DQ15
DQ13
VDD
VDD
DQ7
DQ5
ODT
VSS
3