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Elite Semiconductor Memory Technology
Elite Semiconductor Memory Technology


M13S32321A

256K x 32 Bit x 4 Banks Double Data Rate SDRAM



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DDR SDRAM
Features
M13S32321A
256K x 32 Bit x 4 Banks
Double Data Rate SDRAM
z JEDEC Standard
z Internal pipelined double-data-rate architecture, two data access per clock cycle
z Bi-directional data strobe (DQS)
z On-chip DLL
z Differential clock inputs (CLK and CLK )
z DLL aligns DQ and DQS transition with CLK transition
z Quad bank operation
z CAS Latency : 3; 4
z Burst Type : Sequential and Interleave
z Burst Length : 2, 4, 8
z All inputs except data & DM are sampled at the rising edge of the system clock(CLK)
z Data I/O transitions on both edges of data strobe (DQS)
z DQS is edge-aligned with data for reads; center-aligned with data for WRITE
z Data mask (DM) for write masking only
z VDD = 2.375V ~ 2.625V, VDDQ = 2.375V ~ 2.625V
z Auto & Self refresh
z 32ms refresh period (4K cycle)
z SSTL-2 I/O interface
z 100pin LQFP package
Operating Frequencies :
PRODUCT NO.
M13S32321A -5L
MAX FREQ
200MHz
VDD
2.5V
M13S32321A -6L
166MHz
2.5V
PACKAGE
100 LQFP
100 LQFP
Elite Semiconductor Memory Technology Inc.
Publication Date : Sep. 2006
Revision : 1.0
1/49



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Functional Block Diagram
CLK
CLK
CKE
Clock
Generator
Address
Mode Register &
Extended Mode
Register
Row
Address
Buffer
&
Refresh
Counter
CS
RAS
CAS
WE
Column
Address
Buffer
&
Refresh
Counter
M13S32321A
Bank D
Bank C
Bank B
Bank A
Sense Amplifier
Column Decoder
Data Control Circuit
DM
DQ
Pin Arrangement
CLK, CLK
DLL
DQS
DQS
DQ29
VSSQ
DQ30
DQ31
VSS
VDDQ
N.C
N.C
N.C
N.C
N.C
VSSQ
N.C
DQS
VDDQ
VDD
DQ0
DQ1
VSSQ
DQ2
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
100 Pin LQFP
Forward Type
20 x 14 mm
0.65 mmpin Pitch
50 A7
49 A6
48 A5
47 A4
46 VSS
45 A9
44 N.C
43 N.C
42 N.C
41 N.C
40 N.C
39 N.C
38 N.C
37 N.C
36 N.C
35 VDD
34 A3
33 A2
32 A1
31 A0
Elite Semiconductor Memory Technology Inc.
Publication Date : Sep. 2006
Revision : 1.0
2/49



Part Number M13S32321A
Description 256K x 32 Bit x 4 Banks Double Data Rate SDRAM
Maker Elite Semiconductor Memory Technology - Elite Semiconductor Memory Technology
Total Page 49 Pages
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M13S32321A 256K x 32 Bit x 4 Banks Double Data Rate SDRAM M13S32321A
Elite Semiconductor Memory Technology
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