64Mb: x4, x8, x16 SDRAM
Functional Block Diagrams
Functional Block Diagrams
Figure 1: 16 Meg x 4 Functional Block Diagram
Control logic
CKE
CLK
CS#
WE#
CAS#
RAS#
Bank 3
Bank 2
Bank 1
Refresh
counter
12
Row-
address
MUX
Bank 0
row-
Mode register
12
Bank 0
memory
array
12
address
latch
1
1
4096
DQM
12
and
decoder
(4096 x 1024 x 4)
Data
output
register
Sense amplifiers
4
4096
I/O gating
DQM mask logic
read data latch
write drivers
2
4
DQ[3:0]
Bank
control
logic
A[11:0],
BA0, BA1
Address
register
14
Data
input
register
2
4
1024
(x4)
Column
decoder
Column
address
counter/
latch
10
10
PDF: 09005aef80725c0b
64mb_x4x8x16_sdram.pdf - Rev. U 05/13 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
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