2Gb: x4, x8, x16 DDR3 SDRAM - Micron
2Gb: x4, x8, x16 DDR3 SDRAM - Micron
2Gb: x4, x8, x16 DDR3 SDRAM - Micron
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Functional Block Diagrams<br />
<strong>DDR3</strong> <strong>SDRAM</strong> is a high-speed, CMOS dynamic random access memory. It is internally<br />
configured as an 8-bank DRAM.<br />
Figure 3: 512 Meg x 4 Functional Block Diagram<br />
ODT<br />
ZQ<br />
RZQ RESET#<br />
CKE<br />
VSSQ A12<br />
CK, CK#<br />
CS#<br />
RAS#<br />
CAS#<br />
WE#<br />
A[14:0]<br />
BA[2:0]<br />
18<br />
Command<br />
decode<br />
Address<br />
register<br />
Control<br />
logic<br />
Mode registers<br />
18<br />
15<br />
ZQCL, ZQCS<br />
Refresh<br />
counter<br />
11<br />
3<br />
BC4 (burst chop)<br />
OTF<br />
15<br />
Rowaddress<br />
MUX<br />
3<br />
15<br />
Bank<br />
control<br />
logic<br />
Columnaddress<br />
counter/<br />
latch<br />
ZQ CAL<br />
Bank 7<br />
Bank 6<br />
Bank 5<br />
Bank 4<br />
Bank 3<br />
Bank 2<br />
Bank 1<br />
Bank 0<br />
rowaddress<br />
32,768<br />
latch<br />
and<br />
decoder<br />
8<br />
3<br />
To pullup/pulldown<br />
networks<br />
Bank 7<br />
Bank 6<br />
Bank 5<br />
Bank 4<br />
Bank 3<br />
Bank 2<br />
Bank 1<br />
Bank 0<br />
memory<br />
array<br />
(32,768 x 256 x 32)<br />
Sense amplifiers<br />
8,192<br />
I/O gating<br />
DM mask logic<br />
256<br />
(x32)<br />
Column<br />
decoder<br />
Columns 0, 1, and 2<br />
32<br />
BC4<br />
OTF<br />
DM<br />
32<br />
32<br />
Columns 0, 1, and 2<br />
READ<br />
FIFO<br />
and<br />
data<br />
MUX<br />
<strong>2Gb</strong>: <strong>x4</strong>, <strong>x8</strong>, <strong>x16</strong> <strong>DDR3</strong> <strong>SDRAM</strong><br />
Functional Block Diagrams<br />
CK,CK#<br />
4<br />
4<br />
Data<br />
ODT<br />
control<br />
CK,CK#<br />
DLL<br />
READ<br />
drivers<br />
BC4<br />
Column 2<br />
(select upper or<br />
lower nibble for BC4)<br />
PDF: 09005aef826aaadc<br />
<strong>2Gb</strong>_<strong>DDR3</strong>_<strong>SDRAM</strong>.pdf – Rev. P 2/12 EN 14 <strong>Micron</strong> Technology, Inc. reserves the right to change products or specifications without notice.<br />
� 2006 <strong>Micron</strong> Technology, Inc. All rights reserved.<br />
Data<br />
interface<br />
WRITE<br />
drivers<br />
and<br />
input<br />
logic<br />
SW1<br />
DQ[3:0]<br />
DQS, DQS#<br />
SW1<br />
SW1<br />
V DDQ /2<br />
R TT,nom<br />
V DDQ /2<br />
R TT,nom<br />
V DDQ /2<br />
R TT,nom<br />
R TT(WR)<br />
SW2<br />
R TT(WR)<br />
SW2<br />
R TT(WR)<br />
SW2<br />
(1 . . . 4)<br />
(1, 2)<br />
DQ[3:0]<br />
DQS, DQS#<br />
DM